/* CPP Library.
- Copyright (C) 1986, 87, 89, 92-99, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
Contributed by Per Bothner, 1994-95.
Based on CCCP program by Paul Rubin, June 1986
Adapted to ANSI C, Richard Stallman, Jan 1987
#include "config.h"
#include "system.h"
-
-#define FAKE_CONST
+#include "hashtab.h"
#include "cpplib.h"
#include "cpphash.h"
#include "output.h"
#include "prefix.h"
#include "intl.h"
-
-/* XXX Should be in a header file. */
-extern char *version_string;
+#include "version.h"
+#include "mkdeps.h"
/* Predefined symbols, built-in macros, and the default include path. */
#define GET_ENV_PATH_LIST(VAR,NAME) do { (VAR) = getenv (NAME); } while (0)
#endif
+/* Windows does not natively support inodes, and neither does MSDOS.
+ Cygwin's emulation can generate non-unique inodes, so don't use it.
+ VMS has non-numeric inodes. */
+#ifdef VMS
+#define INO_T_EQ(a, b) (!memcmp (&(a), &(b), sizeof (a)))
+#elif (defined _WIN32 && ! defined (_UWIN)) || defined __MSDOS__
+#define INO_T_EQ(a, b) 0
+#else
+#define INO_T_EQ(a, b) ((a) == (b))
+#endif
+
#ifndef STANDARD_INCLUDE_DIR
#define STANDARD_INCLUDE_DIR "/usr/include"
#endif
#ifndef WCHAR_TYPE
#define WCHAR_TYPE "int"
#endif
-#define CPP_WCHAR_TYPE(PFILE) \
- (CPP_OPTIONS (PFILE)->cplusplus ? "__wchar_t" : WCHAR_TYPE)
/* The string value for __USER_LABEL_PREFIX__ */
#define REGISTER_PREFIX ""
#endif
-/* Suffix for object files, and known input-file extensions. */
-static const char * const known_suffixes[] =
-{
- ".c", ".C", ".s", ".S", ".m",
- ".cc", ".cxx", ".cpp", ".cp", ".c++",
- NULL
-};
-
-#ifndef OBJECT_SUFFIX
-# ifdef VMS
-# define OBJECT_SUFFIX ".obj"
-# else
-# define OBJECT_SUFFIX ".o"
-# endif
-#endif
-
-
/* This is the default list of directories to search for include files.
It may be overridden by the various -I and -ixxx options.
#include "file" looks in the same directory as the current file,
- then this list.
+ then this list.
#include <file> just looks in this list.
All these directories are treated as `system' include directories
(they are not subject to pedantic warnings in some cases). */
-static struct default_include
+struct default_include
{
const char *fname; /* The name of the directory. */
const char *component; /* The component containing the directory
int cplusplus; /* Only look here if we're compiling C++. */
int cxx_aware; /* Includes in this directory don't need to
be wrapped in extern "C" when compiling
- C++. This is not used anymore. */
-}
-include_defaults_array[]
+ C++. */
+};
+
+#ifndef STANDARD_INCLUDE_COMPONENT
+#define STANDARD_INCLUDE_COMPONENT 0
+#endif
+
+#ifdef CROSS_COMPILE
+#undef LOCAL_INCLUDE_DIR
+#undef SYSTEM_INCLUDE_DIR
+#undef STANDARD_INCLUDE_DIR
+#else
+#undef CROSS_INCLUDE_DIR
+#endif
+
+static const struct default_include include_defaults_array[]
#ifdef INCLUDE_DEFAULTS
= INCLUDE_DEFAULTS;
#else
= {
+#ifdef GPLUSPLUS_INCLUDE_DIR
/* Pick up GNU C++ specific include files. */
{ GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1 },
-#ifdef CROSS_COMPILE
- /* This is the dir for fixincludes. Put it just before
- the files that we fix. */
- { GCC_INCLUDE_DIR, "GCC", 0, 0 },
- /* For cross-compilation, this dir name is generated
- automatically in Makefile.in. */
- { CROSS_INCLUDE_DIR, "GCC", 0, 0 },
-#ifdef TOOL_INCLUDE_DIR
- /* This is another place that the target system's headers might be. */
- { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },
#endif
-#else /* not CROSS_COMPILE */
#ifdef LOCAL_INCLUDE_DIR
- /* This should be /usr/local/include and should come before
- the fixincludes-fixed header files. */
+ /* /usr/local/include comes before the fixincluded header files. */
{ LOCAL_INCLUDE_DIR, 0, 0, 1 },
#endif
+#ifdef GCC_INCLUDE_DIR
+ /* This is the dir for fixincludes and for gcc's private headers. */
+ { GCC_INCLUDE_DIR, "GCC", 0, 0 },
+#endif
+#ifdef CROSS_INCLUDE_DIR
+ /* One place the target system's headers might be. */
+ { CROSS_INCLUDE_DIR, "GCC", 0, 0 },
+#endif
#ifdef TOOL_INCLUDE_DIR
- /* This is here ahead of GCC_INCLUDE_DIR because assert.h goes here.
- Likewise, behind LOCAL_INCLUDE_DIR, where glibc puts its assert.h. */
+ /* Another place the target system's headers might be. */
{ TOOL_INCLUDE_DIR, "BINUTILS", 0, 1 },
#endif
- /* This is the dir for fixincludes. Put it just before
- the files that we fix. */
- { GCC_INCLUDE_DIR, "GCC", 0, 0 },
- /* Some systems have an extra dir of include files. */
#ifdef SYSTEM_INCLUDE_DIR
+ /* Some systems have an extra dir of include files. */
{ SYSTEM_INCLUDE_DIR, 0, 0, 0 },
#endif
-#ifndef STANDARD_INCLUDE_COMPONENT
-#define STANDARD_INCLUDE_COMPONENT 0
-#endif
+#ifdef STANDARD_INCLUDE_DIR
+ /* /usr/include comes dead last. */
{ STANDARD_INCLUDE_DIR, STANDARD_INCLUDE_COMPONENT, 0, 0 },
-#endif /* not CROSS_COMPILE */
+#endif
{ 0, 0, 0, 0 }
};
#endif /* no INCLUDE_DEFAULTS */
for -include, one for -imacros. `undef' is set for -U, clear for
-D, ignored for the others.
(Future: add an equivalent of -U for -A) */
+
+typedef void (* cl_directive_handler) PARAMS ((cpp_reader *, const char *));
struct pending_option
{
struct pending_option *next;
- char *arg;
- int undef;
+ const char *arg;
+ cl_directive_handler handler;
+};
+
+/* The `pending' structure accumulates all the options that are not
+ actually processed until we hit cpp_start_read. It consists of
+ several lists, one for each type of option. We keep both head and
+ tail pointers for quick insertion. */
+struct cpp_pending
+{
+ struct pending_option *directive_head, *directive_tail;
+
+ struct file_name_list *quote_head, *quote_tail;
+ struct file_name_list *brack_head, *brack_tail;
+ struct file_name_list *systm_head, *systm_tail;
+ struct file_name_list *after_head, *after_tail;
+
+ struct pending_option *imacros_head, *imacros_tail;
+ struct pending_option *include_head, *include_tail;
};
#ifdef __STDC__
static void initialize_builtins PARAMS ((cpp_reader *));
static void append_include_chain PARAMS ((cpp_reader *,
struct cpp_pending *,
- char *, int));
-static char *base_name PARAMS ((const char *));
+ char *, int, int));
+static void merge_include_chains PARAMS ((cpp_reader *));
+
static void dump_special_to_buffer PARAMS ((cpp_reader *, const char *));
static void initialize_dependency_output PARAMS ((cpp_reader *));
-static void new_pending_define PARAMS ((struct cpp_options *,
- const char *));
+static void initialize_standard_includes PARAMS ((cpp_reader *));
+static void new_pending_directive PARAMS ((struct cpp_pending *,
+ const char *,
+ cl_directive_handler));
+#ifdef HOST_EBCDIC
+static int opt_comp PARAMS ((const void *, const void *));
+#endif
+static int parse_option PARAMS ((const char *));
+static int handle_option PARAMS ((cpp_reader *, int, char **));
-/* Last argument to append_include_chain: chain to use */
+/* Fourth argument to append_include_chain: chain to use */
enum { QUOTE = 0, BRACKET, SYSTEM, AFTER };
-/* If gcc is in use (stage2/stage3) we can make this table initialized data. */
-#ifdef __STDC__
-#define CAT(a, b) a##b
-#else
-#define CAT(a, b) a/**/b
-#endif
+/* If we have designated initializers (GCC >2.7, or C99) this table
+ can be initialized, constant data. Otherwise, it has to be filled
+ in at runtime. */
-#if (GCC_VERSION >= 2007)
-#define TABLE(id) static inline void CAT(init_, id) PARAMS ((void)) {} \
-unsigned char id[256] = {
-#define s(p, v) [p] = v,
+#if (GCC_VERSION >= 2007) || (__STDC_VERSION__ >= 199901L)
+#define init_IStable() /* nothing */
+#define ISTABLE const unsigned char _cpp_IStable[256] = {
#define END };
+#define s(p, v) [p] = v,
#else
-#define TABLE(id) unsigned char id[256] = { 0 }; \
-static void CAT(init_,id) PARAMS ((void)) { \
-unsigned char *x = id;
+#define ISTABLE unsigned char _cpp_IStable[256] = { 0 }; \
+ static void init_IStable PARAMS ((void)) { \
+ unsigned char *x = _cpp_IStable;
+#define END }
#define s(p, v) x[p] = v;
-#define END }
#endif
#define A(x) s(x, ISidnum|ISidstart)
#define H(x) s(x, IShspace|ISspace)
#define S(x) s(x, ISspace)
-TABLE (IStable)
+ISTABLE
A('_')
A('a') A('b') A('c') A('d') A('e') A('f') A('g') A('h') A('i')
N('1') N('2') N('3') N('4') N('5') N('6') N('7') N('8') N('9') N('0')
- H(' ') H('\t') H('\v') H('\f')
+ H('\0') H(' ') H('\t') H('\v') H('\f')
S('\n')
END
#undef N
#undef H
#undef S
-#undef TABLE
-#undef END
#undef s
-#undef CAT
+#undef ISTABLE
+#undef END
/* Given a colon-separated list of file names PATH,
add all the names to the search path for include files. */
name[q - p] = 0;
}
- append_include_chain (pfile, pend, name, path);
+ append_include_chain (pfile, pend, name, path, 0);
/* Advance past this name. */
if (*q == 0)
while (1);
}
-/* Find the base name of a (partial) pathname FNAME.
- Returns a pointer into the string passed in.
- Accepts Unix (/-separated) paths on all systems,
- DOS and VMS paths on those systems. */
-static char *
-base_name (fname)
- const char *fname;
-{
- char *s = (char *)fname;
- char *p;
-#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
- if (ISALPHA (s[0]) && s[1] == ':') s += 2;
- if ((p = rindex (s, '\\'))) s = p + 1;
-#elif defined VMS
- if ((p = rindex (s, ':'))) s = p + 1; /* Skip device. */
- if ((p = rindex (s, ']'))) s = p + 1; /* Skip directory. */
- if ((p = rindex (s, '>'))) s = p + 1; /* Skip alternate (int'n'l) dir. */
-#endif
- if ((p = rindex (s, '/'))) s = p + 1;
- return s;
-}
-
-
/* Append DIR to include path PATH. DIR must be permanently allocated
and writable. */
static void
-append_include_chain (pfile, pend, dir, path)
+append_include_chain (pfile, pend, dir, path, cxx_aware)
cpp_reader *pfile;
struct cpp_pending *pend;
char *dir;
int path;
+ int cxx_aware;
{
struct file_name_list *new;
struct stat st;
unsigned int len;
- simplify_pathname (dir);
+ _cpp_simplify_pathname (dir);
if (stat (dir, &st))
{
/* Dirs that don't exist are silently ignored. */
if (errno != ENOENT)
cpp_notice_from_errno (pfile, dir);
- else if (CPP_OPTIONS (pfile)->verbose)
+ else if (CPP_OPTION (pfile, verbose))
fprintf (stderr, _("ignoring nonexistent directory `%s'\n"), dir);
return;
}
len = strlen (dir);
if (len > pfile->max_include_len)
pfile->max_include_len = len;
-
- new = (struct file_name_list *)xmalloc (sizeof (struct file_name_list));
+
+ new = (struct file_name_list *) xmalloc (sizeof (struct file_name_list));
new->name = dir;
new->nlen = len;
new->ino = st.st_ino;
new->dev = st.st_dev;
- new->sysp = (path == SYSTEM);
+ if (path == SYSTEM)
+ new->sysp = cxx_aware ? 1 : 2;
+ else
+ new->sysp = 0;
new->name_map = NULL;
new->next = NULL;
new->alloc = NULL;
}
}
+/* Merge the four include chains together in the order quote, bracket,
+ system, after. Remove duplicate dirs (as determined by
+ INO_T_EQ()). The system_include and after_include chains are never
+ referred to again after this function; all access is through the
+ bracket_include path.
+
+ For the future: Check if the directory is empty (but
+ how?) and possibly preload the include hash. */
+
+static void
+merge_include_chains (pfile)
+ cpp_reader *pfile;
+{
+ struct file_name_list *prev, *cur, *other;
+ struct file_name_list *quote, *brack, *systm, *after;
+ struct file_name_list *qtail, *btail, *stail, *atail;
+
+ struct cpp_pending *pend = CPP_OPTION (pfile, pending);
+
+ qtail = pend->quote_tail;
+ btail = pend->brack_tail;
+ stail = pend->systm_tail;
+ atail = pend->after_tail;
+
+ quote = pend->quote_head;
+ brack = pend->brack_head;
+ systm = pend->systm_head;
+ after = pend->after_head;
+
+ /* Paste together bracket, system, and after include chains. */
+ if (stail)
+ stail->next = after;
+ else
+ systm = after;
+ if (btail)
+ btail->next = systm;
+ else
+ brack = systm;
+
+ /* This is a bit tricky.
+ First we drop dupes from the quote-include list.
+ Then we drop dupes from the bracket-include list.
+ Finally, if qtail and brack are the same directory,
+ we cut out qtail.
+
+ We can't just merge the lists and then uniquify them because
+ then we may lose directories from the <> search path that should
+ be there; consider -Ifoo -Ibar -I- -Ifoo -Iquux. It is however
+ safe to treat -Ibar -Ifoo -I- -Ifoo -Iquux as if written
+ -Ibar -I- -Ifoo -Iquux.
+
+ Note that this algorithm is quadratic in the number of -I switches,
+ which is acceptable since there aren't usually that many of them. */
+
+ for (cur = quote, prev = NULL; cur; cur = cur->next)
+ {
+ for (other = quote; other != cur; other = other->next)
+ if (INO_T_EQ (cur->ino, other->ino)
+ && cur->dev == other->dev)
+ {
+ if (CPP_OPTION (pfile, verbose))
+ fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
+ cur->name);
+
+ prev->next = cur->next;
+ free (cur->name);
+ free (cur);
+ cur = prev;
+ break;
+ }
+ prev = cur;
+ }
+ qtail = prev;
+
+ for (cur = brack; cur; cur = cur->next)
+ {
+ for (other = brack; other != cur; other = other->next)
+ if (INO_T_EQ (cur->ino, other->ino)
+ && cur->dev == other->dev)
+ {
+ if (CPP_OPTION (pfile, verbose))
+ fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
+ cur->name);
+
+ prev->next = cur->next;
+ free (cur->name);
+ free (cur);
+ cur = prev;
+ break;
+ }
+ prev = cur;
+ }
+
+ if (quote)
+ {
+ if (INO_T_EQ (qtail->ino, brack->ino) && qtail->dev == brack->dev)
+ {
+ if (quote == qtail)
+ {
+ if (CPP_OPTION (pfile, verbose))
+ fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
+ quote->name);
+
+ free (quote->name);
+ free (quote);
+ quote = brack;
+ }
+ else
+ {
+ cur = quote;
+ while (cur->next != qtail)
+ cur = cur->next;
+ cur->next = brack;
+ if (CPP_OPTION (pfile, verbose))
+ fprintf (stderr, _("ignoring duplicate directory `%s'\n"),
+ qtail->name);
+
+ free (qtail->name);
+ free (qtail);
+ }
+ }
+ else
+ qtail->next = brack;
+ }
+ else
+ quote = brack;
+
+ CPP_OPTION (pfile, quote_include) = quote;
+ CPP_OPTION (pfile, bracket_include) = brack;
+}
+
/* Write out a #define command for the special named MACRO_NAME
to PFILE's token_buffer. */
cpp_reader *pfile;
const char *macro_name;
{
- static char define_directive[] = "#define ";
+ static const char define_directive[] = "#define ";
int macro_name_length = strlen (macro_name);
- output_line_command (pfile, same_file);
CPP_RESERVE (pfile, sizeof(define_directive) + macro_name_length);
CPP_PUTS_Q (pfile, define_directive, sizeof(define_directive)-1);
CPP_PUTS_Q (pfile, macro_name, macro_name_length);
CPP_PUTC_Q (pfile, ' ');
- cpp_expand_to_buffer (pfile, macro_name, macro_name_length);
+ _cpp_expand_to_buffer (pfile, macro_name, macro_name_length);
CPP_PUTC (pfile, '\n');
}
-/* Initialize a cpp_options structure. */
-void
-cpp_options_init (opts)
- cpp_options *opts;
-{
- bzero ((char *) opts, sizeof (struct cpp_options));
-
- opts->dollars_in_ident = 1;
- opts->cplusplus_comments = 1;
- opts->warn_import = 1;
- opts->discard_comments = 1;
-
- opts->pending =
- (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
-}
-
/* Initialize a cpp_reader structure. */
void
cpp_reader_init (pfile)
cpp_reader *pfile;
{
- bzero ((char *) pfile, sizeof (cpp_reader));
+ memset ((char *) pfile, 0, sizeof (cpp_reader));
pfile->token_buffer_size = 200;
pfile->token_buffer = (U_CHAR *) xmalloc (pfile->token_buffer_size);
CPP_SET_WRITTEN (pfile, 0);
- pfile->hashtab = (HASHNODE **) xcalloc (HASHSIZE, sizeof (HASHNODE *));
+ CPP_OPTION (pfile, dollars_in_ident) = 1;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ CPP_OPTION (pfile, warn_import) = 1;
+ CPP_OPTION (pfile, discard_comments) = 1;
+ CPP_OPTION (pfile, show_column) = 1;
+
+ CPP_OPTION (pfile, pending) =
+ (struct cpp_pending *) xcalloc (1, sizeof (struct cpp_pending));
+
+ _cpp_init_macro_hash (pfile);
+ _cpp_init_include_hash (pfile);
+}
+
+/* Initialize a cpp_printer structure. As a side effect, open the
+ output file. */
+cpp_printer *
+cpp_printer_init (pfile, print)
+ cpp_reader *pfile;
+ cpp_printer *print;
+{
+ memset (print, '\0', sizeof (cpp_printer));
+ if (CPP_OPTION (pfile, out_fname) == NULL)
+ CPP_OPTION (pfile, out_fname) = "";
+
+ if (CPP_OPTION (pfile, out_fname)[0] == '\0')
+ print->outf = stdout;
+ else
+ {
+ print->outf = fopen (CPP_OPTION (pfile, out_fname), "w");
+ if (! print->outf)
+ {
+ cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
+ return NULL;
+ }
+ }
+ return print;
}
/* Free resources used by PFILE.
cpp_cleanup (pfile)
cpp_reader *pfile;
{
- int i;
- while (CPP_BUFFER (pfile) != CPP_NULL_BUFFER (pfile))
+ while (CPP_BUFFER (pfile) != NULL)
cpp_pop_buffer (pfile);
if (pfile->token_buffer)
pfile->token_buffer = NULL;
}
- if (pfile->deps_buffer)
- {
- free (pfile->deps_buffer);
- pfile->deps_buffer = NULL;
- pfile->deps_allocated_size = 0;
- }
-
if (pfile->input_buffer)
{
free (pfile->input_buffer);
- free (pfile->input_speccase);
- pfile->input_buffer = pfile->input_speccase = NULL;
+ pfile->input_buffer = NULL;
pfile->input_buffer_len = 0;
}
- while (pfile->if_stack)
- {
- IF_STACK_FRAME *temp = pfile->if_stack;
- pfile->if_stack = temp->next;
- free (temp);
- }
-
- for (i = ALL_INCLUDE_HASHSIZE; --i >= 0; )
- {
- struct include_hash *imp = pfile->all_include_files[i];
- while (imp)
- {
- struct include_hash *next = imp->next;
-#if 0
- /* This gets freed elsewhere - I think. */
- free (imp->name);
-#endif
- free (imp);
- imp = next;
- }
- pfile->all_include_files[i] = 0;
- }
+ if (pfile->deps)
+ deps_free (pfile->deps);
- for (i = HASHSIZE; --i >= 0;)
- {
- while (pfile->hashtab[i])
- delete_macro (pfile->hashtab[i]);
- }
- free (pfile->hashtab);
+ htab_delete (pfile->hashtab);
+ htab_delete (pfile->all_include_files);
}
be entered in the macro hash table under the name NAME, with value
VALUE (if any). FLAGS tweaks the behavior a little:
DUMP write debug info for this macro
- STDC define only if not -traditional
- ULP value is the global user_label_prefix (which can't be
- put directly into the table).
+ VERS value is the global version_string, quoted
+ ULP value is the global user_label_prefix
*/
struct builtin
unsigned short flags;
};
#define DUMP 0x01
-#define STDC 0x02
-#define ULP 0x10
+#define VERS 0x02
+#define ULP 0x04
static const struct builtin builtin_array[] =
{
- { "__TIME__", 0, T_TIME, DUMP },
- { "__DATE__", 0, T_DATE, DUMP },
- { "__FILE__", 0, T_FILE, 0 },
- { "__BASE_FILE__", 0, T_BASE_FILE, DUMP },
- { "__LINE__", 0, T_SPECLINE, 0 },
- { "__INCLUDE_LEVEL__", 0, T_INCLUDE_LEVEL, 0 },
- { "__VERSION__", 0, T_VERSION, DUMP },
- { "__STDC__", 0, T_STDC, DUMP|STDC },
-
- { "__USER_LABEL_PREFIX__", 0, T_CONST, ULP },
- { "__REGISTER_PREFIX__", REGISTER_PREFIX, T_CONST, 0 },
- { "__HAVE_BUILTIN_SETJMP__", "1", T_CONST, 0 },
+ { "__TIME__", 0, T_TIME, 0 },
+ { "__DATE__", 0, T_DATE, 0 },
+ { "__FILE__", 0, T_FILE, 0 },
+ { "__BASE_FILE__", 0, T_BASE_FILE, 0 },
+ { "__LINE__", 0, T_SPECLINE, 0 },
+ { "__INCLUDE_LEVEL__", 0, T_INCLUDE_LEVEL, 0 },
+
+ { "__VERSION__", 0, T_XCONST, DUMP|VERS },
+ { "__USER_LABEL_PREFIX__", 0, T_CONST, DUMP|ULP },
+ { "__STDC__", "1", T_STDC, DUMP },
+ { "__REGISTER_PREFIX__", REGISTER_PREFIX, T_CONST, DUMP },
+ { "__HAVE_BUILTIN_SETJMP__", "1", T_CONST, DUMP },
#ifndef NO_BUILTIN_SIZE_TYPE
- { "__SIZE_TYPE__", SIZE_TYPE, T_CONST, DUMP },
+ { "__SIZE_TYPE__", SIZE_TYPE, T_CONST, DUMP },
#endif
#ifndef NO_BUILTIN_PTRDIFF_TYPE
- { "__PTRDIFF_TYPE__", PTRDIFF_TYPE, T_CONST, DUMP },
+ { "__PTRDIFF_TYPE__", PTRDIFF_TYPE, T_CONST, DUMP },
+#endif
+#ifndef NO_BUILTIN_WCHAR_TYPE
+ { "__WCHAR_TYPE__", WCHAR_TYPE, T_CONST, DUMP },
#endif
- { "__WCHAR_TYPE__", WCHAR_TYPE, T_CONST, DUMP },
- { 0, 0, 0, 0 }
};
+#define builtin_array_end \
+ builtin_array + sizeof(builtin_array)/sizeof(struct builtin)
/* Subroutine of cpp_start_read; reads the builtins table above and
enters the macros into the hash table. */
-
static void
initialize_builtins (pfile)
cpp_reader *pfile;
int len;
const struct builtin *b;
const char *val;
- for(b = builtin_array; b->name; b++)
+ HASHNODE *hp;
+ for(b = builtin_array; b < builtin_array_end; b++)
{
- if ((b->flags & STDC) && CPP_TRADITIONAL (pfile))
+ if (b->type == T_STDC && CPP_TRADITIONAL (pfile))
continue;
- val = (b->flags & ULP) ? user_label_prefix : b->value;
+ if (b->flags & ULP)
+ val = user_label_prefix;
+ else if (b->flags & VERS)
+ {
+ val = xmalloc (strlen (version_string) + 3);
+ sprintf ((char *)val, "\"%s\"", version_string);
+ }
+ else
+ val = b->value;
+
len = strlen (b->name);
+ hp = _cpp_lookup (pfile, b->name, len);
+ hp->value.cpval = val;
+ hp->type = b->type;
- cpp_install (pfile, b->name, len, b->type, val);
- if ((b->flags & DUMP) && CPP_OPTIONS (pfile)->debug_output)
+ if ((b->flags & DUMP) && CPP_OPTION (pfile, debug_output))
dump_special_to_buffer (pfile, b->name);
}
-
}
#undef DUMP
#undef STDC
+#undef VERS
#undef ULP
/* Another subroutine of cpp_start_read. This one sets up to do
initialize_dependency_output (pfile)
cpp_reader *pfile;
{
- cpp_options *opts = CPP_OPTIONS (pfile);
char *spec, *s, *output_file;
-
+
/* Either of two environment variables can specify output of deps.
Its value is either "OUTPUT_FILE" or "OUTPUT_FILE DEPS_TARGET",
where OUTPUT_FILE is the file to write deps info to
and DEPS_TARGET is the target to mention in the deps. */
- if (opts->print_deps == 0)
+ if (CPP_OPTION (pfile, print_deps) == 0)
{
spec = getenv ("DEPENDENCIES_OUTPUT");
if (spec)
- opts->print_deps = 1;
+ CPP_OPTION (pfile, print_deps) = 1;
else
{
spec = getenv ("SUNPRO_DEPENDENCIES");
if (spec)
- opts->print_deps = 2;
+ CPP_OPTION (pfile, print_deps) = 2;
else
return;
}
s = strchr (spec, ' ');
if (s)
{
- opts->deps_target = s + 1;
+ CPP_OPTION (pfile, deps_target) = s + 1;
output_file = (char *) xmalloc (s - spec + 1);
memcpy (output_file, spec, s - spec);
output_file[s - spec] = 0;
}
else
{
- opts->deps_target = 0;
+ CPP_OPTION (pfile, deps_target) = 0;
output_file = spec;
}
- opts->deps_file = output_file;
- opts->print_deps_append = 1;
+ CPP_OPTION (pfile, deps_file) = output_file;
+ CPP_OPTION (pfile, print_deps_append) = 1;
}
+ pfile->deps = deps_init ();
+
/* Print the expected object file name as the target of this Make-rule. */
- pfile->deps_allocated_size = 200;
- pfile->deps_buffer = (char *) xmalloc (pfile->deps_allocated_size);
- pfile->deps_buffer[0] = 0;
- pfile->deps_size = 0;
- pfile->deps_column = 0;
-
- if (opts->deps_target)
- deps_output (pfile, opts->deps_target, ':');
- else if (*opts->in_fname == 0)
- deps_output (pfile, "-", ':');
+ if (CPP_OPTION (pfile, deps_target))
+ deps_add_target (pfile->deps, CPP_OPTION (pfile, deps_target));
+ else if (*CPP_OPTION (pfile, in_fname) == 0)
+ deps_add_target (pfile->deps, "-");
else
+ deps_calc_target (pfile->deps, CPP_OPTION (pfile, in_fname));
+
+ if (CPP_OPTION (pfile, in_fname))
+ deps_add_dep (pfile->deps, CPP_OPTION (pfile, in_fname));
+}
+
+/* And another subroutine. This one sets up the standard include path. */
+static void
+initialize_standard_includes (pfile)
+ cpp_reader *pfile;
+{
+ char *path;
+ const struct default_include *p;
+ const char *specd_prefix = CPP_OPTION (pfile, include_prefix);
+
+ /* Several environment variables may add to the include search path.
+ CPATH specifies an additional list of directories to be searched
+ as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
+ etc. specify an additional list of directories to be searched as
+ if specified with -isystem, for the language indicated. */
+
+ GET_ENV_PATH_LIST (path, "CPATH");
+ if (path != 0 && *path != 0)
+ path_include (pfile, CPP_OPTION (pfile, pending), path, BRACKET);
+
+ switch ((CPP_OPTION (pfile, objc) << 1) + CPP_OPTION (pfile, cplusplus))
+ {
+ case 0:
+ GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
+ break;
+ case 1:
+ GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
+ break;
+ case 2:
+ GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
+ break;
+ case 3:
+ GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
+ break;
+ }
+ if (path != 0 && *path != 0)
+ path_include (pfile, CPP_OPTION (pfile, pending), path, SYSTEM);
+
+ /* Search "translated" versions of GNU directories.
+ These have /usr/local/lib/gcc... replaced by specd_prefix. */
+ if (specd_prefix != 0)
{
- char *p, *q, *r;
- int len, x;
-
- /* Discard all directory prefixes from filename. */
- q = base_name (opts->in_fname);
-
- /* Copy remainder to mungable area. */
- len = strlen (q);
- p = (char *) alloca (len + 8);
- strcpy (p, q);
-
- /* Output P, but remove known suffixes. */
- q = p + len;
- /* Point to the filename suffix. */
- r = strrchr (p, '.');
- if (r)
- /* Compare against the known suffixes. */
- for (x = 0; known_suffixes[x]; x++)
- if (strncmp (known_suffixes[x], r, q - r) == 0)
+ char *default_prefix = (char *) alloca (sizeof GCC_INCLUDE_DIR - 7);
+ /* Remove the `include' from /usr/local/lib/gcc.../include.
+ GCC_INCLUDE_DIR will always end in /include. */
+ int default_len = sizeof GCC_INCLUDE_DIR - 8;
+ int specd_len = strlen (specd_prefix);
+
+ memcpy (default_prefix, GCC_INCLUDE_DIR, default_len);
+ default_prefix[default_len] = '\0';
+
+ for (p = include_defaults_array; p->fname; p++)
+ {
+ /* Some standard dirs are only for C++. */
+ if (!p->cplusplus
+ || (CPP_OPTION (pfile, cplusplus)
+ && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
{
- /* Make q point to the bit we're going to overwrite
- with an object suffix. */
- q = r;
- break;
+ /* Does this dir start with the prefix? */
+ if (!strncmp (p->fname, default_prefix, default_len))
+ {
+ /* Yes; change prefix and add to search list. */
+ int flen = strlen (p->fname);
+ int this_len = specd_len + flen - default_len;
+ char *str = (char *) xmalloc (this_len + 1);
+ memcpy (str, specd_prefix, specd_len);
+ memcpy (str + specd_len,
+ p->fname + default_len,
+ flen - default_len + 1);
+
+ append_include_chain (pfile, CPP_OPTION (pfile, pending),
+ str, SYSTEM, p->cxx_aware);
+ }
}
+ }
+ }
- /* Supply our own suffix. */
- strcpy (q, OBJECT_SUFFIX);
-
- deps_output (pfile, p, ':');
- deps_output (pfile, opts->in_fname, ' ');
+ /* Search ordinary names for GNU include directories. */
+ for (p = include_defaults_array; p->fname; p++)
+ {
+ /* Some standard dirs are only for C++. */
+ if (!p->cplusplus
+ || (CPP_OPTION (pfile, cplusplus)
+ && !CPP_OPTION (pfile, no_standard_cplusplus_includes)))
+ {
+ /* XXX Potential memory leak! */
+ char *str = xstrdup (update_path (p->fname, p->component));
+ append_include_chain (pfile, CPP_OPTION (pfile, pending),
+ str, SYSTEM, p->cxx_aware);
+ }
}
}
*/
int
-cpp_start_read (pfile, fname)
+cpp_start_read (pfile, print, fname)
cpp_reader *pfile;
- char *fname;
+ cpp_printer *print;
+ const char *fname;
{
- struct cpp_options *opts = CPP_OPTIONS (pfile);
struct pending_option *p, *q;
- int f;
- cpp_buffer *fp;
- struct include_hash *ih_fake;
/* -MG doesn't select the form of output and must be specified with one of
-M or -MM. -MG doesn't make sense with -MD or -MMD since they don't
inhibit compilation. */
- if (opts->print_deps_missing_files
- && (opts->print_deps == 0 || !opts->no_output))
+ if (CPP_OPTION (pfile, print_deps_missing_files)
+ && (CPP_OPTION (pfile, print_deps) == 0
+ || !CPP_OPTION (pfile, no_output)))
{
cpp_fatal (pfile, "-MG must be specified with one of -M or -MM");
return 0;
}
/* Chill should not be used with -trigraphs. */
- if (opts->chill && opts->trigraphs)
+ if (CPP_OPTION (pfile, chill) && CPP_OPTION (pfile, trigraphs))
{
cpp_warning (pfile, "-lang-chill and -trigraphs are mutually exclusive");
- opts->trigraphs = 0;
+ CPP_OPTION (pfile, trigraphs) = 0;
}
+ /* -Wtraditional is not useful in C++ mode. */
+ if (CPP_OPTION (pfile, cplusplus))
+ CPP_OPTION (pfile, warn_traditional) = 0;
+
/* Set this if it hasn't been set already. */
if (user_label_prefix == NULL)
user_label_prefix = USER_LABEL_PREFIX;
-
- /* Now that we know dollars_in_ident, we can initialize the syntax
- tables. */
+
+ /* Don't bother trying to do macro expansion if we've already done
+ preprocessing. */
+ if (CPP_OPTION (pfile, preprocessed))
+ pfile->no_macro_expand++;
+
+ /* Set up the IStable. This doesn't do anything if we were compiled
+ with a compiler that supports C99 designated initializers. */
init_IStable ();
- /* XXX Get rid of code that depends on this, then IStable can
- be truly const. */
- if (opts->dollars_in_ident)
- IStable['$'] = ISidstart|ISidnum;
-
- /* Do partial setup of input buffer for the sake of generating
- early #line directives (when -g is in effect). */
- fp = cpp_push_buffer (pfile, NULL, 0);
- if (!fp)
+
+ /* Set up the tables used by read_and_prescan. */
+ _cpp_init_input_buffer (pfile);
+
+ /* Set up the include search path now. */
+ if (! CPP_OPTION (pfile, no_standard_includes))
+ initialize_standard_includes (pfile);
+
+ merge_include_chains (pfile);
+
+ /* With -v, print the list of dirs to search. */
+ if (CPP_OPTION (pfile, verbose))
+ {
+ struct file_name_list *l;
+ fprintf (stderr, _("#include \"...\" search starts here:\n"));
+ for (l = CPP_OPTION (pfile, quote_include); l; l = l->next)
+ {
+ if (l == CPP_OPTION (pfile, bracket_include))
+ fprintf (stderr, _("#include <...> search starts here:\n"));
+ fprintf (stderr, " %s\n", l->name);
+ }
+ fprintf (stderr, _("End of search list.\n"));
+ }
+
+ /* Open the main input file. This must be done early, so we have a
+ buffer to stand on. */
+ if (CPP_OPTION (pfile, in_fname) == NULL
+ || *CPP_OPTION (pfile, in_fname) == 0)
+ {
+ CPP_OPTION (pfile, in_fname) = fname;
+ if (CPP_OPTION (pfile, in_fname) == NULL)
+ CPP_OPTION (pfile, in_fname) = "";
+ }
+ if (CPP_OPTION (pfile, out_fname) == NULL)
+ CPP_OPTION (pfile, out_fname) = "";
+
+ if (!cpp_read_file (pfile, fname))
return 0;
- if (opts->in_fname == NULL || *opts->in_fname == 0)
+
+ initialize_dependency_output (pfile);
+
+ /* -D and friends may produce output, which should be identified
+ as line 0. */
+
+ CPP_BUFFER (pfile)->lineno = 0;
+
+ if (print)
{
- opts->in_fname = fname;
- if (opts->in_fname == NULL)
- opts->in_fname = "";
+ print->lineno = 0;
+ print->last_fname = CPP_BUFFER (pfile)->nominal_fname;
+ print->last_bsd = pfile->buffer_stack_depth;
+ print->written = CPP_WRITTEN (pfile);
}
- fp->nominal_fname = fp->fname = opts->in_fname;
- fp->lineno = 0;
- /* Install __LINE__, etc. Must follow initialize_char_syntax
- and option processing. */
+ /* Install __LINE__, etc. */
initialize_builtins (pfile);
/* Do -U's, -D's and -A's in the order they were seen. */
- p = opts->pending->define_head;
+ p = CPP_OPTION (pfile, pending)->directive_head;
while (p)
{
- if (opts->debug_output)
- output_line_command (pfile, same_file);
- if (p->undef)
- cpp_undef (pfile, p->arg);
- else
- cpp_define (pfile, p->arg);
-
+ (*p->handler) (pfile, p->arg);
q = p->next;
free (p);
p = q;
}
+ pfile->done_initializing = 1;
+ pfile->only_seen_white = 2;
+ CPP_BUFFER (pfile)->lineno = 1;
+ if (print && ! CPP_OPTION (pfile, no_output))
+ cpp_output_tokens (pfile, print);
+
+ /* The -imacros files can be scanned now, but the -include files
+ have to be pushed onto the include stack and processed later,
+ in the main loop calling cpp_get_token. */
- p = opts->pending->assert_head;
+ p = CPP_OPTION (pfile, pending)->imacros_head;
while (p)
{
- if (opts->debug_output)
- output_line_command (pfile, same_file);
- if (p->undef)
- cpp_unassert (pfile, p->arg);
- else
- cpp_assert (pfile, p->arg);
+ if (cpp_read_file (pfile, p->arg))
+ cpp_scan_buffer_nooutput (pfile);
+ q = p->next;
+ free (p);
+ p = q;
+ }
+ p = CPP_OPTION (pfile, pending)->include_head;
+ while (p)
+ {
+ if (cpp_read_file (pfile, p->arg)
+ && print && ! CPP_OPTION (pfile, no_output))
+ cpp_output_tokens (pfile, print);
q = p->next;
free (p);
p = q;
}
-
- opts->done_initializing = 1;
- /* Several environment variables may add to the include search path.
- CPATH specifies an additional list of directories to be searched
- as if specified with -I, while C_INCLUDE_PATH, CPLUS_INCLUDE_PATH,
- etc. specify an additional list of directories to be searched as
- if specified with -isystem, for the language indicated.
+ free (CPP_OPTION (pfile, pending));
+ CPP_OPTION (pfile, pending) = NULL;
- These variables are ignored if -nostdinc is on. */
- if (! opts->no_standard_includes)
- {
- char *path;
- GET_ENV_PATH_LIST (path, "CPATH");
- if (path != 0 && *path != 0)
- path_include (pfile, opts->pending, path, BRACKET);
+ return 1;
+}
- switch ((opts->objc << 1) + opts->cplusplus)
- {
- case 0:
- GET_ENV_PATH_LIST (path, "C_INCLUDE_PATH");
- break;
- case 1:
- GET_ENV_PATH_LIST (path, "CPLUS_INCLUDE_PATH");
- break;
- case 2:
- GET_ENV_PATH_LIST (path, "OBJC_INCLUDE_PATH");
- break;
- case 3:
- GET_ENV_PATH_LIST (path, "OBJCPLUS_INCLUDE_PATH");
- break;
- }
- if (path != 0 && *path != 0)
- path_include (pfile, opts->pending, path, SYSTEM);
+/* This is called at the end of preprocessing. It pops the
+ last buffer and writes dependency output. It should also
+ clear macro definitions, such that you could call cpp_start_read
+ with a new filename to restart processing. */
+void
+cpp_finish (pfile, print)
+ cpp_reader *pfile;
+ cpp_printer *print;
+{
+ if (CPP_BUFFER (pfile))
+ {
+ cpp_ice (pfile, "buffers still stacked in cpp_finish");
+ while (CPP_BUFFER (pfile))
+ cpp_pop_buffer (pfile);
}
- /* Unless -nostdinc, add the compiled-in include path to the list,
- translating prefixes. */
- if (!opts->no_standard_includes)
+ /* Don't write the deps file if preprocessing has failed. */
+ if (CPP_OPTION (pfile, print_deps) && pfile->errors == 0)
{
- struct default_include *p = include_defaults_array;
- char *specd_prefix = opts->include_prefix;
-
- /* Search "translated" versions of GNU directories.
- These have /usr/local/lib/gcc... replaced by specd_prefix. */
- if (specd_prefix != 0)
+ /* Stream on which to print the dependency information. */
+ FILE *deps_stream = 0;
+ const char *deps_mode
+ = CPP_OPTION (pfile, print_deps_append) ? "a" : "w";
+ if (CPP_OPTION (pfile, deps_file) == 0)
+ deps_stream = stdout;
+ else
{
- char *default_prefix = alloca (sizeof GCC_INCLUDE_DIR - 7);
- /* Remove the `include' from /usr/local/lib/gcc.../include.
- GCC_INCLUDE_DIR will always end in /include. */
- int default_len = sizeof GCC_INCLUDE_DIR - 8;
- int specd_len = strlen (specd_prefix);
-
- memcpy (default_prefix, GCC_INCLUDE_DIR, default_len);
- default_prefix[default_len] = '\0';
-
- for (p = include_defaults_array; p->fname; p++)
+ deps_stream = fopen (CPP_OPTION (pfile, deps_file), deps_mode);
+ if (deps_stream == 0)
+ cpp_notice_from_errno (pfile, CPP_OPTION (pfile, deps_file));
+ }
+ if (deps_stream)
+ {
+ deps_write (pfile->deps, deps_stream, 72);
+ if (CPP_OPTION (pfile, deps_file))
{
- /* Some standard dirs are only for C++. */
- if (!p->cplusplus
- || (opts->cplusplus
- && !opts->no_standard_cplusplus_includes))
- {
- /* Does this dir start with the prefix? */
- if (!strncmp (p->fname, default_prefix, default_len))
- {
- /* Yes; change prefix and add to search list. */
- int flen = strlen (p->fname);
- int this_len = specd_len + flen - default_len;
- char *str = (char *) xmalloc (this_len + 1);
- memcpy (str, specd_prefix, specd_len);
- memcpy (str + specd_len,
- p->fname + default_len,
- flen - default_len + 1);
-
- append_include_chain (pfile, opts->pending,
- str, SYSTEM);
- }
- }
+ if (ferror (deps_stream) || fclose (deps_stream) != 0)
+ cpp_fatal (pfile, "I/O error on output");
}
}
+ }
- /* Search ordinary names for GNU include directories. */
- for (p = include_defaults_array; p->fname; p++)
- {
- /* Some standard dirs are only for C++. */
- if (!p->cplusplus
- || (opts->cplusplus
- && !opts->no_standard_cplusplus_includes))
- {
- /* XXX Potential memory leak! */
- char *str = xstrdup (update_path (p->fname, p->component));
- append_include_chain (pfile, opts->pending, str, SYSTEM);
- }
- }
- }
+ if (CPP_OPTION (pfile, dump_macros) == dump_only)
+ _cpp_dump_macro_hash (pfile);
- merge_include_chains (opts);
-
- /* With -v, print the list of dirs to search. */
- if (opts->verbose)
+ /* Flush any pending output. */
+ if (print)
{
- struct file_name_list *p;
- fprintf (stderr, _("#include \"...\" search starts here:\n"));
- for (p = opts->quote_include; p; p = p->next)
- {
- if (p == opts->bracket_include)
- fprintf (stderr, _("#include <...> search starts here:\n"));
- fprintf (stderr, " %s\n", p->name);
- }
- fprintf (stderr, _("End of search list.\n"));
- }
-
- /* Don't bother trying to do macro expansion if we've already done
- preprocessing. */
- if (opts->preprocessed)
- pfile->no_macro_expand++;
-
- /* Open the main input file.
- We do this in nonblocking mode so we don't get stuck here if
- someone clever has asked cpp to process /dev/rmt0;
- finclude() will check that we have a real file to work with. */
- if (fname == NULL || *fname == 0)
- {
- fname = "";
- f = 0;
- }
- else if ((f = open (fname, O_RDONLY|O_NONBLOCK|O_NOCTTY, 0666)) < 0)
- {
- cpp_notice_from_errno (pfile, fname);
- return 0;
- }
-
- initialize_dependency_output (pfile);
-
- /* Must call finclude() on the main input before processing
- -include switches; otherwise the -included text winds up
- after the main input. */
- ih_fake = (struct include_hash *) xmalloc (sizeof (struct include_hash));
- ih_fake->next = 0;
- ih_fake->next_this_file = 0;
- ih_fake->foundhere = ABSOLUTE_PATH; /* well sort of ... */
- ih_fake->name = fname;
- ih_fake->control_macro = 0;
- ih_fake->buf = (char *)-1;
- ih_fake->limit = 0;
- if (!finclude (pfile, f, ih_fake))
- return 0;
- if (opts->preprocessed)
- /* If we've already processed this code, we want to trust the #line
- directives in the input. But we still need to update our line
- counter accordingly. */
- pfile->lineno = CPP_BUFFER (pfile)->lineno;
- else
- output_line_command (pfile, same_file);
- pfile->only_seen_white = 2;
-
- /* The -imacros files can be scanned now, but the -include files
- have to be pushed onto the include stack and processed later,
- in the main loop calling cpp_get_token. */
-
- pfile->no_record_file++;
- opts->no_output++;
- p = opts->pending->imacros_head;
- while (p)
- {
- int fd = open (p->arg, O_RDONLY|O_NONBLOCK|O_NOCTTY, 0666);
- if (fd < 0)
- {
- cpp_notice_from_errno (pfile, p->arg);
- return 0;
- }
- if (!cpp_push_buffer (pfile, NULL, 0))
- return 0;
-
- ih_fake = (struct include_hash *)
- xmalloc (sizeof (struct include_hash));
- ih_fake->next = 0;
- ih_fake->next_this_file = 0;
- ih_fake->foundhere = ABSOLUTE_PATH; /* well sort of ... */
- ih_fake->name = p->arg;
- ih_fake->control_macro = 0;
- ih_fake->buf = (char *)-1;
- ih_fake->limit = 0;
- if (finclude (pfile, fd, ih_fake))
- {
- if (CPP_PRINT_DEPS (pfile))
- deps_output (pfile, ih_fake->name, ' ');
-
- cpp_scan_buffer (pfile);
- }
- else
- cpp_pop_buffer (pfile);
- free (ih_fake);
-
- q = p->next;
- free (p);
- p = q;
+ cpp_output_tokens (pfile, print);
+ if (ferror (print->outf) || fclose (print->outf))
+ cpp_notice_from_errno (pfile, CPP_OPTION (pfile, out_fname));
}
+}
- opts->no_output--;
+static void
+new_pending_directive (pend, text, handler)
+ struct cpp_pending *pend;
+ const char *text;
+ cl_directive_handler handler;
+{
+ struct pending_option *o = (struct pending_option *)
+ xmalloc (sizeof (struct pending_option));
- p = opts->pending->include_head;
- while (p)
- {
- int fd = open (p->arg, O_RDONLY|O_NONBLOCK|O_NOCTTY, 0666);
- if (fd < 0)
- {
- cpp_notice_from_errno (pfile, p->arg);
- return 0;
- }
- if (!cpp_push_buffer (pfile, NULL, 0))
- return 0;
-
- ih_fake = (struct include_hash *)
- xmalloc (sizeof (struct include_hash));
- ih_fake->next = 0;
- ih_fake->next_this_file = 0;
- ih_fake->foundhere = ABSOLUTE_PATH; /* well sort of ... */
- ih_fake->name = p->arg;
- ih_fake->control_macro = 0;
- ih_fake->buf = (char *)-1;
- ih_fake->limit = 0;
- if (finclude (pfile, fd, ih_fake))
- {
- if (CPP_PRINT_DEPS (pfile))
- deps_output (pfile, ih_fake->name, ' ');
-
- output_line_command (pfile, enter_file);
- }
- else
- cpp_pop_buffer (pfile);
- q = p->next;
- free (p);
- p = q;
- }
- pfile->no_record_file--;
+ o->arg = text;
+ o->next = NULL;
+ o->handler = handler;
+ APPEND (pend, directive, o);
+}
- free (opts->pending);
- opts->pending = NULL;
+/* Irix6 "cc -n32" and OSF4 cc have problems with char foo[] = ("string");
+ I.e. a const string initializer with parens around it. That is
+ what N_("string") resolves to, so we make no_* be macros instead. */
+#define no_arg N_("Argument missing after %s")
+#define no_ass N_("Assertion missing after %s")
+#define no_dir N_("Directory name missing after %s")
+#define no_fil N_("File name missing after %s")
+#define no_mac N_("Macro name missing after %s")
+#define no_pth N_("Path name missing after %s")
+
+/* This is the list of all command line options, with the leading
+ "-" removed. It must be sorted in ASCII collating order. */
+#define COMMAND_LINE_OPTIONS \
+ DEF_OPT("", 0, OPT_stdin_stdout) \
+ DEF_OPT("$", 0, OPT_dollar) \
+ DEF_OPT("+", 0, OPT_plus) \
+ DEF_OPT("-help", 0, OPT__help) \
+ DEF_OPT("-version", 0, OPT__version) \
+ DEF_OPT("A", no_ass, OPT_A) \
+ DEF_OPT("C", 0, OPT_C) \
+ DEF_OPT("D", no_mac, OPT_D) \
+ DEF_OPT("H", 0, OPT_H) \
+ DEF_OPT("I", no_dir, OPT_I) \
+ DEF_OPT("M", 0, OPT_M) \
+ DEF_OPT("MD", no_fil, OPT_MD) \
+ DEF_OPT("MG", 0, OPT_MG) \
+ DEF_OPT("MM", 0, OPT_MM) \
+ DEF_OPT("MMD", no_fil, OPT_MMD) \
+ DEF_OPT("P", 0, OPT_P) \
+ DEF_OPT("U", no_mac, OPT_U) \
+ DEF_OPT("W", no_arg, OPT_W) /* arg optional */ \
+ DEF_OPT("d", no_arg, OPT_d) \
+ DEF_OPT("fleading-underscore", 0, OPT_fleading_underscore) \
+ DEF_OPT("fno-leading-underscore", 0, OPT_fno_leading_underscore) \
+ DEF_OPT("fno-preprocessed", 0, OPT_fno_preprocessed) \
+ DEF_OPT("fno-show-column", 0, OPT_fno_show_column) \
+ DEF_OPT("fpreprocessed", 0, OPT_fpreprocessed) \
+ DEF_OPT("fshow-column", 0, OPT_fshow_column) \
+ DEF_OPT("g", no_arg, OPT_g) /* arg optional */ \
+ DEF_OPT("h", 0, OPT_h) \
+ DEF_OPT("idirafter", no_dir, OPT_idirafter) \
+ DEF_OPT("imacros", no_fil, OPT_imacros) \
+ DEF_OPT("include", no_fil, OPT_include) \
+ DEF_OPT("iprefix", no_pth, OPT_iprefix) \
+ DEF_OPT("isystem", no_dir, OPT_isystem) \
+ DEF_OPT("iwithprefix", no_dir, OPT_iwithprefix) \
+ DEF_OPT("iwithprefixbefore", no_dir, OPT_iwithprefixbefore) \
+ DEF_OPT("lang-asm", 0, OPT_lang_asm) \
+ DEF_OPT("lang-c", 0, OPT_lang_c) \
+ DEF_OPT("lang-c++", 0, OPT_lang_cplusplus) \
+ DEF_OPT("lang-c89", 0, OPT_lang_c89) \
+ DEF_OPT("lang-chill", 0, OPT_lang_chill) \
+ DEF_OPT("lang-fortran", 0, OPT_lang_fortran) \
+ DEF_OPT("lang-objc", 0, OPT_lang_objc) \
+ DEF_OPT("lang-objc++", 0, OPT_lang_objcplusplus) \
+ DEF_OPT("nostdinc", 0, OPT_nostdinc) \
+ DEF_OPT("nostdinc++", 0, OPT_nostdincplusplus) \
+ DEF_OPT("o", no_fil, OPT_o) \
+ DEF_OPT("pedantic", 0, OPT_pedantic) \
+ DEF_OPT("pedantic-errors", 0, OPT_pedantic_errors) \
+ DEF_OPT("remap", 0, OPT_remap) \
+ DEF_OPT("std=c89", 0, OPT_std_c89) \
+ DEF_OPT("std=c99", 0, OPT_std_c99) \
+ DEF_OPT("std=c9x", 0, OPT_std_c9x) \
+ DEF_OPT("std=gnu89", 0, OPT_std_gnu89) \
+ DEF_OPT("std=gnu99", 0, OPT_std_gnu99) \
+ DEF_OPT("std=gnu9x", 0, OPT_std_gnu9x) \
+ DEF_OPT("std=iso9899:1990", 0, OPT_std_iso9899_1990) \
+ DEF_OPT("std=iso9899:199409", 0, OPT_std_iso9899_199409) \
+ DEF_OPT("std=iso9899:1999", 0, OPT_std_iso9899_1999) \
+ DEF_OPT("std=iso9899:199x", 0, OPT_std_iso9899_199x) \
+ DEF_OPT("traditional", 0, OPT_traditional) \
+ DEF_OPT("trigraphs", 0, OPT_trigraphs) \
+ DEF_OPT("v", 0, OPT_v) \
+ DEF_OPT("w", 0, OPT_w)
+
+#define DEF_OPT(text, msg, code) code,
+enum opt_code
+{
+ COMMAND_LINE_OPTIONS
+ N_OPTS
+};
+#undef DEF_OPT
- return 1;
-}
+struct cl_option
+{
+ const char *opt_text;
+ const char *msg;
+ size_t opt_len;
+ enum opt_code opt_code;
+};
-/* This is called at the end of preprocessing. It pops the
- last buffer and writes dependency output. It should also
- clear macro definitions, such that you could call cpp_start_read
- with a new filename to restart processing. */
-void
-cpp_finish (pfile)
- cpp_reader *pfile;
+#define DEF_OPT(text, msg, code) { text, msg, sizeof(text) - 1, code },
+#ifdef HOST_EBCDIC
+static struct cl_option cl_options[] =
+#else
+static const struct cl_option cl_options[] =
+#endif
{
- struct cpp_options *opts = CPP_OPTIONS (pfile);
+ COMMAND_LINE_OPTIONS
+};
+#undef DEF_OPT
+#undef COMMAND_LINE_OPTIONS
+
+/* Perform a binary search to find which, if any, option the given
+ command-line matches. Returns its index in the option array,
+ negative on failure. Complications arise since some options can be
+ suffixed with an argument, and multiple complete matches can occur,
+ e.g. -iwithprefix and -iwithprefixbefore. Moreover, we want to
+ accept options beginning with -g and -W that we do not recognise,
+ but not to swallow any subsequent command line argument; these are
+ handled as special cases in cpp_handle_option */
+static int
+parse_option (input)
+ const char *input;
+{
+ unsigned int md, mn, mx;
+ size_t opt_len;
+ int comp;
- if (CPP_PREV_BUFFER (CPP_BUFFER (pfile)) != CPP_NULL_BUFFER (pfile))
- cpp_ice (pfile, "buffers still stacked in cpp_finish");
- cpp_pop_buffer (pfile);
+ mn = 0;
+ mx = N_OPTS;
- if (opts->print_deps)
+ while (mx > mn)
{
- /* Stream on which to print the dependency information. */
- FILE *deps_stream = 0;
+ md = (mn + mx) / 2;
- /* Don't actually write the deps file if compilation has failed. */
- if (pfile->errors == 0)
- {
- const char *deps_mode = opts->print_deps_append ? "a" : "w";
- if (opts->deps_file == 0)
- deps_stream = stdout;
- else if ((deps_stream = fopen (opts->deps_file, deps_mode)) == 0)
- cpp_notice_from_errno (pfile, opts->deps_file);
+ opt_len = cl_options[md].opt_len;
+ comp = strncmp (input, cl_options[md].opt_text, opt_len);
- if (deps_stream)
+ if (comp > 0)
+ mn = md + 1;
+ else if (comp < 0)
+ mx = md;
+ else
+ {
+ if (input[opt_len] == '\0')
+ return md;
+ /* We were passed more text. If the option takes an argument,
+ we may match a later option or we may have been passed the
+ argument. The longest possible option match succeeds.
+ If the option takes no arguments we have not matched and
+ continue the search (e.g. input="stdc++" match was "stdc") */
+ mn = md + 1;
+ if (cl_options[md].msg)
{
- fputs (pfile->deps_buffer, deps_stream);
- putc ('\n', deps_stream);
- if (opts->deps_file)
+ /* Scan forwards. If we get an exact match, return it.
+ Otherwise, return the longest option-accepting match.
+ This loops no more than twice with current options */
+ mx = md;
+ for (; mn < N_OPTS; mn++)
{
- if (ferror (deps_stream) || fclose (deps_stream) != 0)
- cpp_fatal (pfile, "I/O error on output");
+ opt_len = cl_options[mn].opt_len;
+ if (strncmp (input, cl_options[mn].opt_text, opt_len))
+ break;
+ if (input[opt_len] == '\0')
+ return mn;
+ if (cl_options[mn].msg)
+ mx = mn;
}
+ return mx;
}
}
}
- if (opts->dump_macros == dump_only)
- {
- int i;
- HASHNODE *h;
- MACRODEF m;
- for (i = HASHSIZE; --i >= 0;)
- {
- for (h = pfile->hashtab[i]; h; h = h->next)
- if (h->type == T_MACRO)
- {
- m.defn = h->value.defn;
- m.symnam = h->name;
- m.symlen = h->length;
- dump_definition (pfile, m);
- CPP_PUTC (pfile, '\n');
- }
- }
- }
-}
-
-static void
-new_pending_define (opts, text)
- struct cpp_options *opts;
- const char *text;
-{
- struct pending_option *o = (struct pending_option *)
- xmalloc (sizeof (struct pending_option));
-
- o->arg = text;
- o->next = NULL;
- o->undef = 0;
- APPEND (opts->pending, define, o);
+ return -1;
}
/* Handle one command-line option in (argc, argv).
Can be called multiple times, to handle multiple sets of options.
Returns number of strings consumed. */
-int
-cpp_handle_option (pfile, argc, argv)
+
+static int
+handle_option (pfile, argc, argv)
cpp_reader *pfile;
int argc;
char **argv;
{
- struct cpp_options *opts = CPP_OPTIONS (pfile);
int i = 0;
if (argv[i][0] != '-')
{
- if (opts->out_fname != NULL)
- {
- print_help ();
- cpp_fatal (pfile, "Too many arguments");
- }
- else if (opts->in_fname != NULL)
- opts->out_fname = argv[i];
+ if (CPP_OPTION (pfile, out_fname) != NULL)
+ cpp_fatal (pfile, "Too many arguments. Type %s --help for usage info",
+ progname);
+ else if (CPP_OPTION (pfile, in_fname) != NULL)
+ CPP_OPTION (pfile, out_fname) = argv[i];
else
- opts->in_fname = argv[i];
+ CPP_OPTION (pfile, in_fname) = argv[i];
}
else
- switch (argv[i][1])
- {
- case 'f':
- if (!strcmp (argv[i], "-fleading-underscore"))
- user_label_prefix = "_";
- else if (!strcmp (argv[i], "-fno-leading-underscore"))
- user_label_prefix = "";
- else if (!strcmp (argv[i], "-fpreprocessed"))
- opts->preprocessed = 1;
- else if (!strcmp (argv[i], "-fno-preprocessed"))
- opts->preprocessed = 0;
- else
- {
- return i;
- }
- break;
-
- case 'I': /* Add directory to path for includes. */
- if (!strcmp (argv[i] + 2, "-"))
- {
- /* -I- means:
- Use the preceding -I directories for #include "..."
- but not #include <...>.
- Don't search the directory of the present file
- for #include "...". (Note that -I. -I- is not the same as
- the default setup; -I. uses the compiler's working dir.) */
- if (! opts->ignore_srcdir)
- {
- opts->ignore_srcdir = 1;
- opts->pending->quote_head = opts->pending->brack_head;
- opts->pending->quote_tail = opts->pending->brack_tail;
- opts->pending->brack_head = 0;
- opts->pending->brack_tail = 0;
- }
- else
- {
- cpp_fatal (pfile, "-I- specified twice");
- return argc;
- }
- }
- else
- {
- char *fname;
- if (argv[i][2] != 0)
- fname = argv[i] + 2;
- else if (i + 1 == argc)
- goto missing_dirname;
- else
- fname = argv[++i];
- append_include_chain (pfile, opts->pending,
- xstrdup (fname), BRACKET);
- }
- break;
-
- case 'i':
- /* Add directory to beginning of system include path, as a system
- include directory. */
- if (!strcmp (argv[i], "-isystem"))
- {
- if (i + 1 == argc)
- goto missing_filename;
- append_include_chain (pfile, opts->pending,
- xstrdup (argv[++i]), SYSTEM);
- }
- else if (!strcmp (argv[i], "-include"))
- {
- if (i + 1 == argc)
- goto missing_filename;
- else
- {
- struct pending_option *o = (struct pending_option *)
- xmalloc (sizeof (struct pending_option));
- o->arg = argv[++i];
-
- /* This list has to be built in reverse order so that
- when cpp_start_read pushes all the -include files onto
- the buffer stack, they will be scanned in forward order. */
- o->next = opts->pending->include_head;
- opts->pending->include_head = o;
- }
- }
- else if (!strcmp (argv[i], "-imacros"))
- {
- if (i + 1 == argc)
- goto missing_filename;
- else
- {
- struct pending_option *o = (struct pending_option *)
- xmalloc (sizeof (struct pending_option));
- o->arg = argv[++i];
- o->next = NULL;
-
- APPEND (opts->pending, imacros, o);
- }
- }
- /* Add directory to end of path for includes,
- with the default prefix at the front of its name. */
- else if (!strcmp (argv[i], "-iwithprefix"))
- {
- char *fname;
- int len;
- if (i + 1 == argc)
- goto missing_dirname;
- ++i;
- len = strlen (argv[i]);
-
- if (opts->include_prefix != 0)
- {
- fname = xmalloc (opts->include_prefix_len + len + 1);
- memcpy (fname, opts->include_prefix, opts->include_prefix_len);
- memcpy (fname + opts->include_prefix_len, argv[i], len + 1);
- }
- else
- {
- fname = xmalloc (sizeof GCC_INCLUDE_DIR - 8 + len);
- memcpy (fname, GCC_INCLUDE_DIR, sizeof GCC_INCLUDE_DIR - 9);
- memcpy (fname + sizeof GCC_INCLUDE_DIR - 9, argv[i], len + 1);
- }
-
- append_include_chain (pfile, opts->pending, fname, SYSTEM);
- }
- /* Add directory to main path for includes,
- with the default prefix at the front of its name. */
- else if (!strcmp (argv[i], "-iwithprefixbefore"))
- {
- char *fname;
- int len;
- if (i + 1 == argc)
- goto missing_dirname;
- ++i;
- len = strlen (argv[i]);
+ {
+ enum opt_code opt_code;
+ int opt_index;
+ const char *arg = 0;
- if (opts->include_prefix != 0)
- {
- fname = xmalloc (opts->include_prefix_len + len + 1);
- memcpy (fname, opts->include_prefix, opts->include_prefix_len);
- memcpy (fname + opts->include_prefix_len, argv[i], len + 1);
- }
- else
- {
- fname = xmalloc (sizeof GCC_INCLUDE_DIR - 8 + len);
- memcpy (fname, GCC_INCLUDE_DIR, sizeof GCC_INCLUDE_DIR - 9);
- memcpy (fname + sizeof GCC_INCLUDE_DIR - 9, argv[i], len + 1);
- }
-
- append_include_chain (pfile, opts->pending, fname, BRACKET);
- }
- /* Add directory to end of path for includes. */
- else if (!strcmp (argv[i], "-idirafter"))
- {
- if (i + 1 == argc)
- goto missing_dirname;
- append_include_chain (pfile, opts->pending,
- xstrdup (argv[++i]), AFTER);
- }
- else if (!strcmp (argv[i], "-iprefix"))
- {
- if (i + 1 == argc)
- goto missing_filename;
- else
- {
- opts->include_prefix = argv[++i];
- opts->include_prefix_len = strlen (argv[i]);
- }
- }
- else if (!strcmp (argv[i], "-ifoutput"))
- opts->output_conditionals = 1;
+ /* Skip over '-' */
+ opt_index = parse_option (&argv[i][1]);
+ if (opt_index < 0)
+ return i;
- break;
-
- case 'o':
- if (opts->out_fname != NULL)
- {
- cpp_fatal (pfile, "Output filename specified twice");
- return argc;
- }
- if (i + 1 == argc)
- goto missing_filename;
- opts->out_fname = argv[++i];
- if (!strcmp (opts->out_fname, "-"))
- opts->out_fname = "";
- break;
-
- case 'p':
- if (!strcmp (argv[i], "-pedantic"))
- CPP_PEDANTIC (pfile) = 1;
- else if (!strcmp (argv[i], "-pedantic-errors"))
- {
- CPP_PEDANTIC (pfile) = 1;
- opts->pedantic_errors = 1;
- }
- break;
-
- case 't':
- if (!strcmp (argv[i], "-traditional"))
- {
- opts->traditional = 1;
- opts->cplusplus_comments = 0;
- opts->trigraphs = 0;
- opts->warn_trigraphs = 0;
- }
- else if (!strcmp (argv[i], "-trigraphs"))
- opts->trigraphs = 1;
- break;
-
- case 'l':
- if (! strcmp (argv[i], "-lang-c"))
- opts->cplusplus = 0, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->c99 = 1, opts->objc = 0;
- if (! strcmp (argv[i], "-lang-c89"))
- {
- opts->cplusplus = 0, opts->cplusplus_comments = 0;
- opts->c89 = 1, opts->c99 = 0, opts->objc = 0;
- opts->trigraphs = 1;
- new_pending_define (opts, "__STRICT_ANSI__");
- }
- if (! strcmp (argv[i], "-lang-c++"))
- opts->cplusplus = 1, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->c99 = 0, opts->objc = 0;
- if (! strcmp (argv[i], "-lang-objc"))
- opts->cplusplus = 0, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->c99 = 0, opts->objc = 1;
- if (! strcmp (argv[i], "-lang-objc++"))
- opts->cplusplus = 1, opts->cplusplus_comments = 1, opts->c89 = 0,
- opts->c99 = 0, opts->objc = 1;
- if (! strcmp (argv[i], "-lang-asm"))
- opts->lang_asm = 1;
- if (! strcmp (argv[i], "-lang-fortran"))
- opts->lang_fortran = 1, opts->cplusplus_comments = 0;
- if (! strcmp (argv[i], "-lang-chill"))
- opts->objc = 0, opts->cplusplus = 0, opts->chill = 1,
- opts->traditional = 1;
- break;
-
- case '+':
- opts->cplusplus = 1, opts->cplusplus_comments = 1;
- break;
+ opt_code = cl_options[opt_index].opt_code;
+ if (cl_options[opt_index].msg)
+ {
+ arg = &argv[i][cl_options[opt_index].opt_len + 1];
- case 's':
- if (!strcmp (argv[i], "-std=gnu89"))
- {
- opts->cplusplus = 0, opts->cplusplus_comments = 1;
- opts->c89 = 1, opts->c99 = 0, opts->objc = 0;
- }
- else if (!strcmp (argv[i], "-std=gnu9x")
- || !strcmp (argv[i], "-std=gnu99"))
- {
- opts->cplusplus = 0, opts->cplusplus_comments = 1;
- opts->c89 = 0, opts->c99 = 1, opts->objc = 0;
- new_pending_define (opts, "__STDC_VERSION__=199901L");
- }
- else if (!strcmp (argv[i], "-std=iso9899:1990")
- || !strcmp (argv[i], "-std=c89"))
- {
- opts->cplusplus = 0, opts->cplusplus_comments = 0;
- opts->c89 = 1, opts->c99 = 0, opts->objc = 0;
- opts->trigraphs = 1;
- new_pending_define (opts, "__STRICT_ANSI__");
- }
- else if (!strcmp (argv[i], "-std=iso9899:199409"))
- {
- opts->cplusplus = 0, opts->cplusplus_comments = 0;
- opts->c89 = 1, opts->c99 = 0, opts->objc = 0;
- opts->trigraphs = 1;
- new_pending_define (opts, "__STRICT_ANSI__");
- new_pending_define (opts, "__STDC_VERSION__=199409L");
- }
- else if (!strcmp (argv[i], "-std=iso9899:199x")
- || !strcmp (argv[i], "-std=iso9899:1999")
- || !strcmp (argv[i], "-std=c9x")
- || !strcmp (argv[i], "-std=c99"))
- {
- opts->cplusplus = 0, opts->cplusplus_comments = 1;
- opts->c89 = 0, opts->c99 = 1, opts->objc = 0;
- opts->trigraphs = 1;
- new_pending_define (opts, "__STRICT_ANSI__");
- new_pending_define (opts, "__STDC_VERSION__=199901L");
- }
- break;
+ /* Yuk. Special case for -g and -W as they must not swallow
+ up any following argument. If this becomes common, add
+ another field to the cl_options table */
+ if (arg[0] == '\0' && !(opt_code == OPT_g || opt_code == OPT_W))
+ {
+ arg = argv[++i];
+ if (!arg)
+ {
+ cpp_fatal (pfile, cl_options[opt_index].msg, argv[i - 1]);
+ return argc;
+ }
+ }
+ }
- case 'w':
- opts->inhibit_warnings = 1;
- break;
-
- case 'W':
- if (!strcmp (argv[i], "-Wtrigraphs"))
- opts->warn_trigraphs = 1;
- else if (!strcmp (argv[i], "-Wno-trigraphs"))
- opts->warn_trigraphs = 0;
- else if (!strcmp (argv[i], "-Wcomment"))
- opts->warn_comments = 1;
- else if (!strcmp (argv[i], "-Wno-comment"))
- opts->warn_comments = 0;
- else if (!strcmp (argv[i], "-Wcomments"))
- opts->warn_comments = 1;
- else if (!strcmp (argv[i], "-Wno-comments"))
- opts->warn_comments = 0;
- else if (!strcmp (argv[i], "-Wtraditional"))
- opts->warn_stringify = 1;
- else if (!strcmp (argv[i], "-Wno-traditional"))
- opts->warn_stringify = 0;
- else if (!strcmp (argv[i], "-Wundef"))
- opts->warn_undef = 1;
- else if (!strcmp (argv[i], "-Wno-undef"))
- opts->warn_undef = 0;
- else if (!strcmp (argv[i], "-Wimport"))
- opts->warn_import = 1;
- else if (!strcmp (argv[i], "-Wno-import"))
- opts->warn_import = 0;
- else if (!strcmp (argv[i], "-Werror"))
- opts->warnings_are_errors = 1;
- else if (!strcmp (argv[i], "-Wno-error"))
- opts->warnings_are_errors = 0;
- else if (!strcmp (argv[i], "-Wall"))
- {
- opts->warn_trigraphs = 1;
- opts->warn_comments = 1;
- }
- break;
-
- case 'M':
- /* The style of the choices here is a bit mixed.
- The chosen scheme is a hybrid of keeping all options in one string
- and specifying each option in a separate argument:
- -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
- -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
- -M[M][G][D file]. This is awkward to handle in specs, and is not
- as extensible. */
- /* ??? -MG must be specified in addition to one of -M or -MM.
- This can be relaxed in the future without breaking anything.
- The converse isn't true. */
-
- /* -MG isn't valid with -MD or -MMD. This is checked for later. */
- if (!strcmp (argv[i], "-MG"))
- {
- opts->print_deps_missing_files = 1;
- break;
- }
- if (!strcmp (argv[i], "-M"))
- opts->print_deps = 2;
- else if (!strcmp (argv[i], "-MM"))
- opts->print_deps = 1;
- else if (!strcmp (argv[i], "-MD"))
- opts->print_deps = 2;
- else if (!strcmp (argv[i], "-MMD"))
- opts->print_deps = 1;
- /* For -MD and -MMD options, write deps on file named by next arg. */
- if (!strcmp (argv[i], "-MD") || !strcmp (argv[i], "-MMD"))
- {
- if (i+1 == argc)
- goto missing_filename;
- opts->deps_file = argv[++i];
- }
- else
- {
- /* For -M and -MM, write deps on standard output
- and suppress the usual output. */
- opts->no_output = 1;
- }
- break;
-
- case 'd':
+ switch (opt_code)
{
- char *p = argv[i] + 2;
- char c;
- while ((c = *p++) != 0)
+ case N_OPTS: /* shut GCC up */
+ break;
+ case OPT_fleading_underscore:
+ user_label_prefix = "_";
+ break;
+ case OPT_fno_leading_underscore:
+ user_label_prefix = "";
+ break;
+ case OPT_fpreprocessed:
+ CPP_OPTION (pfile, preprocessed) = 1;
+ break;
+ case OPT_fno_preprocessed:
+ CPP_OPTION (pfile, preprocessed) = 0;
+ break;
+ case OPT_fshow_column:
+ CPP_OPTION (pfile, show_column) = 1;
+ break;
+ case OPT_fno_show_column:
+ CPP_OPTION (pfile, show_column) = 0;
+ break;
+ case OPT_w:
+ CPP_OPTION (pfile, inhibit_warnings) = 1;
+ break;
+ case OPT_g: /* Silently ignore anything but -g3 */
+ if (!strcmp(&argv[i][2], "3"))
+ CPP_OPTION (pfile, debug_output) = 1;
+ break;
+ case OPT_h:
+ case OPT__help:
+ print_help ();
+ exit (0); /* XXX */
+ break;
+ case OPT__version:
+ fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
+ exit (0); /* XXX */
+ break;
+ case OPT_C:
+ CPP_OPTION (pfile, discard_comments) = 0;
+ break;
+ case OPT_P:
+ CPP_OPTION (pfile, no_line_commands) = 1;
+ break;
+ case OPT_dollar: /* Don't include $ in identifiers. */
+ CPP_OPTION (pfile, dollars_in_ident) = 0;
+ break;
+ case OPT_H:
+ CPP_OPTION (pfile, print_include_names) = 1;
+ break;
+ case OPT_D:
+ new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_define);
+ break;
+ case OPT_pedantic_errors:
+ CPP_OPTION (pfile, pedantic_errors) = 1;
+ /* fall through */
+ case OPT_pedantic:
+ CPP_OPTION (pfile, pedantic) = 1;
+ break;
+ case OPT_traditional:
+ CPP_OPTION (pfile, traditional) = 1;
+ CPP_OPTION (pfile, cplusplus_comments) = 0;
+ CPP_OPTION (pfile, trigraphs) = 0;
+ CPP_OPTION (pfile, warn_trigraphs) = 0;
+ break;
+ case OPT_trigraphs:
+ CPP_OPTION (pfile, trigraphs) = 1;
+ break;
+ case OPT_plus:
+ CPP_OPTION (pfile, cplusplus) = 1;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ break;
+ case OPT_remap:
+ CPP_OPTION (pfile, remap) = 1;
+ break;
+ case OPT_iprefix:
+ CPP_OPTION (pfile, include_prefix) = arg;
+ CPP_OPTION (pfile, include_prefix_len) = strlen (arg);
+ break;
+ case OPT_lang_c:
+ CPP_OPTION (pfile, cplusplus) = 0;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ CPP_OPTION (pfile, c89) = 0;
+ CPP_OPTION (pfile, c99) = 1;
+ CPP_OPTION (pfile, objc) = 0;
+ break;
+ case OPT_lang_c89:
+ CPP_OPTION (pfile, cplusplus) = 0;
+ CPP_OPTION (pfile, cplusplus_comments) = 0;
+ CPP_OPTION (pfile, c89) = 1;
+ CPP_OPTION (pfile, c99) = 0;
+ CPP_OPTION (pfile, objc) = 0;
+ CPP_OPTION (pfile, trigraphs) = 1;
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ "__STRICT_ANSI__", cpp_define);
+ break;
+ case OPT_lang_cplusplus:
+ CPP_OPTION (pfile, cplusplus) = 1;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ CPP_OPTION (pfile, c89) = 0;
+ CPP_OPTION (pfile, c99) = 0;
+ CPP_OPTION (pfile, objc) = 0;
+ break;
+ case OPT_lang_objc:
+ case OPT_lang_objcplusplus:
+ CPP_OPTION (pfile, cplusplus) = opt_code == OPT_lang_objcplusplus;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ CPP_OPTION (pfile, c89) = 0;
+ CPP_OPTION (pfile, c99) = 0;
+ CPP_OPTION (pfile, objc) = 1;
+ break;
+ case OPT_lang_asm:
+ CPP_OPTION (pfile, lang_asm) = 1;
+ break;
+ case OPT_lang_fortran:
+ CPP_OPTION (pfile, lang_fortran) = 1;
+ CPP_OPTION (pfile, cplusplus_comments) = 0;
+ break;
+ case OPT_lang_chill:
+ CPP_OPTION (pfile, objc) = 0;
+ CPP_OPTION (pfile, cplusplus) = 0;
+ CPP_OPTION (pfile, chill) = 1;
+ CPP_OPTION (pfile, traditional) = 1;
+ break;
+ case OPT_nostdinc:
+ /* -nostdinc causes no default include directories.
+ You must specify all include-file directories with -I. */
+ CPP_OPTION (pfile, no_standard_includes) = 1;
+ break;
+ case OPT_nostdincplusplus:
+ /* -nostdinc++ causes no default C++-specific include directories. */
+ CPP_OPTION (pfile, no_standard_cplusplus_includes) = 1;
+ break;
+ case OPT_std_gnu89:
+ CPP_OPTION (pfile, cplusplus) = 0;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ CPP_OPTION (pfile, c89) = 1;
+ CPP_OPTION (pfile, c99) = 0;
+ CPP_OPTION (pfile, objc) = 0;
+ break;
+ case OPT_std_gnu9x:
+ case OPT_std_gnu99:
+ CPP_OPTION (pfile, cplusplus) = 0;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ CPP_OPTION (pfile, c89) = 0;
+ CPP_OPTION (pfile, c99) = 1;
+ CPP_OPTION (pfile, objc) = 0;
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ "__STDC_VERSION__=199901L", cpp_define);
+ break;
+ case OPT_std_iso9899_199409:
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ "__STDC_VERSION__=199409L", cpp_define);
+ /* Fall through */
+ case OPT_std_iso9899_1990:
+ case OPT_std_c89:
+ CPP_OPTION (pfile, cplusplus) = 0;
+ CPP_OPTION (pfile, cplusplus_comments) = 0;
+ CPP_OPTION (pfile, c89) = 1;
+ CPP_OPTION (pfile, c99) = 0;
+ CPP_OPTION (pfile, objc) = 0;
+ CPP_OPTION (pfile, trigraphs) = 1;
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ "__STRICT_ANSI__", cpp_define);
+ break;
+ case OPT_std_iso9899_199x:
+ case OPT_std_iso9899_1999:
+ case OPT_std_c9x:
+ case OPT_std_c99:
+ CPP_OPTION (pfile, cplusplus) = 0;
+ CPP_OPTION (pfile, cplusplus_comments) = 1;
+ CPP_OPTION (pfile, c89) = 0;
+ CPP_OPTION (pfile, c99) = 1;
+ CPP_OPTION (pfile, objc) = 0;
+ CPP_OPTION (pfile, trigraphs) = 1;
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ "__STRICT_ANSI__", cpp_define);
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ "__STDC_VERSION__=199901L", cpp_define);
+ break;
+ case OPT_o:
+ if (CPP_OPTION (pfile, out_fname) != NULL)
{
- /* Arg to -d specifies what parts of macros to dump */
- switch (c)
- {
- case 'M':
- opts->dump_macros = dump_only;
- opts->no_output = 1;
+ cpp_fatal (pfile, "Output filename specified twice");
+ return argc;
+ }
+ CPP_OPTION (pfile, out_fname) = arg;
+ if (!strcmp (CPP_OPTION (pfile, out_fname), "-"))
+ CPP_OPTION (pfile, out_fname) = "";
+ break;
+ case OPT_v:
+ fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
+#ifdef TARGET_VERSION
+ TARGET_VERSION;
+#endif
+ fputc ('\n', stderr);
+ CPP_OPTION (pfile, verbose) = 1;
+ break;
+ case OPT_stdin_stdout:
+ /* JF handle '-' as file name meaning stdin or stdout */
+ if (CPP_OPTION (pfile, in_fname) == NULL)
+ CPP_OPTION (pfile, in_fname) = "";
+ else if (CPP_OPTION (pfile, out_fname) == NULL)
+ CPP_OPTION (pfile, out_fname) = "";
+ break;
+ case OPT_d:
+ /* Args to -d specify what parts of macros to dump.
+ Silently ignore unrecognised options; they may
+ be aimed at the compiler proper. */
+ {
+ char c;
+
+ while ((c = *arg++) != '\0')
+ switch (c)
+ {
+ case 'M':
+ CPP_OPTION (pfile, dump_macros) = dump_only;
+ CPP_OPTION (pfile, no_output) = 1;
break;
case 'N':
- opts->dump_macros = dump_names;
+ CPP_OPTION (pfile, dump_macros) = dump_names;
break;
case 'D':
- opts->dump_macros = dump_definitions;
+ CPP_OPTION (pfile, dump_macros) = dump_definitions;
break;
case 'I':
- opts->dump_includes = 1;
+ CPP_OPTION (pfile, dump_includes) = 1;
break;
}
- }
- }
- break;
-
- case 'g':
- if (argv[i][2] == '3')
- opts->debug_output = 1;
- break;
-
- case '-':
- if (!strcmp (argv[i], "--help"))
- print_help ();
- else if (!strcmp (argv[i], "--version"))
- fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
- exit (0); /* XXX */
- break;
-
- case 'v':
- fprintf (stderr, _("GNU CPP version %s (cpplib)\n"), version_string);
-#ifdef TARGET_VERSION
- TARGET_VERSION;
-#endif
- fputc ('\n', stderr);
- opts->verbose = 1;
- break;
-
- case 'H':
- opts->print_include_names = 1;
- break;
-
- case 'D':
- {
- const char *text;
- if (argv[i][2] != 0)
- text = argv[i] + 2;
- else if (i + 1 == argc)
- {
- cpp_fatal (pfile, "Macro name missing after -D option");
- return argc;
- }
- else
- text = argv[++i];
- new_pending_define (opts, text);
- }
- break;
-
- case 'A':
- {
- char *p;
-
- if (argv[i][2] != 0)
- p = argv[i] + 2;
- else if (i + 1 == argc)
- {
- cpp_fatal (pfile, "Assertion missing after -A option");
- return argc;
- }
- else
- p = argv[++i];
-
- if (strcmp (p, "-"))
+ }
+ break;
+ /* The style of the choices here is a bit mixed.
+ The chosen scheme is a hybrid of keeping all options in one string
+ and specifying each option in a separate argument:
+ -M|-MM|-MD file|-MMD file [-MG]. An alternative is:
+ -M|-MM|-MD file|-MMD file|-MG|-MMG; or more concisely:
+ -M[M][G][D file]. This is awkward to handle in specs, and is not
+ as extensible. */
+ /* ??? -MG must be specified in addition to one of -M or -MM.
+ This can be relaxed in the future without breaking anything.
+ The converse isn't true. */
+
+ /* -MG isn't valid with -MD or -MMD. This is checked for later. */
+ case OPT_MG:
+ CPP_OPTION (pfile, print_deps_missing_files) = 1;
+ break;
+ case OPT_M:
+ case OPT_MD:
+ case OPT_MM:
+ case OPT_MMD:
+ if (opt_code == OPT_M || opt_code == OPT_MD)
+ CPP_OPTION (pfile, print_deps) = 2;
+ else
+ CPP_OPTION (pfile, print_deps) = 1;
+
+ /* For -MD and -MMD options, write deps on file named by next arg */
+ /* For -M and -MM, write deps on standard output
+ and suppress the usual output. */
+ if (opt_code == OPT_MD || opt_code == OPT_MMD)
+ CPP_OPTION (pfile, deps_file) = arg;
+ else
+ CPP_OPTION (pfile, no_output) = 1;
+ break;
+ case OPT_A:
+ if (arg[0] == '-')
{
- struct pending_option *o = (struct pending_option *)
- xmalloc (sizeof (struct pending_option));
+ /* -A with an argument beginning with '-' acts as
+ #unassert on whatever immediately follows the '-'.
+ If "-" is the whole argument, we eliminate all
+ predefined macros and assertions, including those
+ that were specified earlier on the command line.
+ That way we can get rid of any that were passed
+ automatically in from GCC. */
+
+ if (arg[1] == '\0')
+ {
+ struct pending_option *o1, *o2;
- o->arg = p;
- o->next = NULL;
- o->undef = 0;
- APPEND (opts->pending, assert, o);
+ o1 = CPP_OPTION (pfile, pending)->directive_head;
+ while (o1)
+ {
+ o2 = o1->next;
+ free (o1);
+ o1 = o2;
+ }
+ CPP_OPTION (pfile, pending)->directive_head = NULL;
+ CPP_OPTION (pfile, pending)->directive_tail = NULL;
+ }
+ else
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ arg + 1, cpp_unassert);
}
else
- {
- /* -A- eliminates all predefined macros and assertions.
- Let's include also any that were specified earlier
- on the command line. That way we can get rid of any
- that were passed automatically in from GCC. */
- struct pending_option *o1, *o2;
-
- o1 = opts->pending->define_head;
- while (o1)
+ new_pending_directive (CPP_OPTION (pfile, pending),
+ arg, cpp_assert);
+ break;
+ case OPT_U:
+ new_pending_directive (CPP_OPTION (pfile, pending), arg, cpp_undef);
+ break;
+ case OPT_I: /* Add directory to path for includes. */
+ if (!strcmp (arg, "-"))
+ {
+ /* -I- means:
+ Use the preceding -I directories for #include "..."
+ but not #include <...>.
+ Don't search the directory of the present file
+ for #include "...". (Note that -I. -I- is not the same as
+ the default setup; -I. uses the compiler's working dir.) */
+ if (! CPP_OPTION (pfile, ignore_srcdir))
{
- o2 = o1->next;
- free (o1);
- o1 = o2;
+ struct cpp_pending *pend = CPP_OPTION (pfile, pending);
+ pend->quote_head = pend->brack_head;
+ pend->quote_tail = pend->brack_tail;
+ pend->brack_head = 0;
+ pend->brack_tail = 0;
+ CPP_OPTION (pfile, ignore_srcdir) = 1;
}
- o1 = opts->pending->assert_head;
- while (o1)
+ else
{
- o2 = o1->next;
- free (o1);
- o1 = o2;
+ cpp_fatal (pfile, "-I- specified twice");
+ return argc;
}
- opts->pending->assert_head = NULL;
- opts->pending->assert_tail = NULL;
- opts->pending->define_head = NULL;
- opts->pending->define_tail = NULL;
- }
- }
- break;
-
- case 'U':
- {
- struct pending_option *o = (struct pending_option *)
- xmalloc (sizeof (struct pending_option));
-
- if (argv[i][2] != 0)
- o->arg = argv[i] + 2;
- else if (i + 1 == argc)
- {
- cpp_fatal (pfile, "Macro name missing after -U option");
- return argc;
- }
- else
- o->arg = argv[++i];
+ }
+ else
+ append_include_chain (pfile, CPP_OPTION (pfile, pending),
+ xstrdup (arg), BRACKET, 0);
+ break;
+ case OPT_isystem:
+ /* Add directory to beginning of system include path, as a system
+ include directory. */
+ append_include_chain (pfile, CPP_OPTION (pfile, pending),
+ xstrdup (arg), SYSTEM, 0);
+ break;
+ case OPT_include:
+ {
+ struct pending_option *o = (struct pending_option *)
+ xmalloc (sizeof (struct pending_option));
+ o->arg = arg;
+
+ /* This list has to be built in reverse order so that
+ when cpp_start_read pushes all the -include files onto
+ the buffer stack, they will be scanned in forward order. */
+ o->next = CPP_OPTION (pfile, pending)->include_head;
+ CPP_OPTION (pfile, pending)->include_head = o;
+ }
+ break;
+ case OPT_imacros:
+ {
+ struct pending_option *o = (struct pending_option *)
+ xmalloc (sizeof (struct pending_option));
+ o->arg = arg;
+ o->next = NULL;
- o->next = NULL;
- o->undef = 1;
- APPEND (opts->pending, define, o);
- }
- break;
-
- case 'C':
- opts->discard_comments = 0;
- break;
-
- case 'E': /* -E comes from cc -E; ignore it. */
- break;
-
- case 'P':
- opts->no_line_commands = 1;
- break;
-
- case '$': /* Don't include $ in identifiers. */
- opts->dollars_in_ident = 0;
- break;
-
- case 'n':
- if (!strcmp (argv[i], "-nostdinc"))
- /* -nostdinc causes no default include directories.
- You must specify all include-file directories with -I. */
- opts->no_standard_includes = 1;
- else if (!strcmp (argv[i], "-nostdinc++"))
- /* -nostdinc++ causes no default C++-specific include directories. */
- opts->no_standard_cplusplus_includes = 1;
- break;
-
- case 'r':
- if (!strcmp (argv[i], "-remap"))
- opts->remap = 1;
- break;
-
- case '\0': /* JF handle '-' as file name meaning stdin or stdout */
- if (opts->in_fname == NULL)
- opts->in_fname = "";
- else if (opts->out_fname == NULL)
- opts->out_fname = "";
- else
- return i; /* error */
- break;
+ APPEND (CPP_OPTION (pfile, pending), imacros, o);
+ }
+ break;
+ case OPT_iwithprefix:
+ /* Add directory to end of path for includes,
+ with the default prefix at the front of its name. */
+ /* fall through */
+ case OPT_iwithprefixbefore:
+ /* Add directory to main path for includes,
+ with the default prefix at the front of its name. */
+ {
+ char *fname;
+ int len;
- default:
- return i;
- }
+ len = strlen (arg);
+ if (CPP_OPTION (pfile, include_prefix) != 0)
+ {
+ size_t ipl = CPP_OPTION (pfile, include_prefix_len);
+ fname = xmalloc (ipl + len + 1);
+ memcpy (fname, CPP_OPTION (pfile, include_prefix), ipl);
+ memcpy (fname + ipl, arg, len + 1);
+ }
+ else
+ {
+ fname = xmalloc (sizeof GCC_INCLUDE_DIR - 8 + len);
+ memcpy (fname, GCC_INCLUDE_DIR, sizeof GCC_INCLUDE_DIR - 9);
+ memcpy (fname + sizeof GCC_INCLUDE_DIR - 9, arg, len + 1);
+ }
+
+ append_include_chain (pfile, CPP_OPTION (pfile, pending), fname,
+ opt_code == OPT_iwithprefix ? SYSTEM: BRACKET, 0);
+ }
+ break;
+ case OPT_idirafter:
+ /* Add directory to end of path for includes. */
+ append_include_chain (pfile, CPP_OPTION (pfile, pending),
+ xstrdup (arg), AFTER, 0);
+ break;
+ case OPT_W:
+ /* Silently ignore unrecognised options */
+ if (!strcmp (argv[i], "-Wall"))
+ {
+ CPP_OPTION (pfile, warn_trigraphs) = 1;
+ CPP_OPTION (pfile, warn_comments) = 1;
+ }
+ else if (!strcmp (argv[i], "-Wtraditional"))
+ CPP_OPTION (pfile, warn_traditional) = 1;
+ else if (!strcmp (argv[i], "-Wtrigraphs"))
+ CPP_OPTION (pfile, warn_trigraphs) = 1;
+ else if (!strcmp (argv[i], "-Wcomment"))
+ CPP_OPTION (pfile, warn_comments) = 1;
+ else if (!strcmp (argv[i], "-Wcomments"))
+ CPP_OPTION (pfile, warn_comments) = 1;
+ else if (!strcmp (argv[i], "-Wundef"))
+ CPP_OPTION (pfile, warn_undef) = 1;
+ else if (!strcmp (argv[i], "-Wimport"))
+ CPP_OPTION (pfile, warn_import) = 1;
+ else if (!strcmp (argv[i], "-Werror"))
+ CPP_OPTION (pfile, warnings_are_errors) = 1;
+ else if (!strcmp (argv[i], "-Wno-traditional"))
+ CPP_OPTION (pfile, warn_traditional) = 0;
+ else if (!strcmp (argv[i], "-Wno-trigraphs"))
+ CPP_OPTION (pfile, warn_trigraphs) = 0;
+ else if (!strcmp (argv[i], "-Wno-comment"))
+ CPP_OPTION (pfile, warn_comments) = 0;
+ else if (!strcmp (argv[i], "-Wno-comments"))
+ CPP_OPTION (pfile, warn_comments) = 0;
+ else if (!strcmp (argv[i], "-Wno-undef"))
+ CPP_OPTION (pfile, warn_undef) = 0;
+ else if (!strcmp (argv[i], "-Wno-import"))
+ CPP_OPTION (pfile, warn_import) = 0;
+ else if (!strcmp (argv[i], "-Wno-error"))
+ CPP_OPTION (pfile, warnings_are_errors) = 0;
+ break;
+ }
+ }
return i + 1;
+}
- missing_filename:
- cpp_fatal (pfile, "Filename missing after `%s' option", argv[i]);
- return argc;
- missing_dirname:
- cpp_fatal (pfile, "Directory name missing after `%s' option", argv[i]);
- return argc;
+#ifdef HOST_EBCDIC
+static int
+opt_comp (const void *p1, const void *p2)
+{
+ return strcmp (((struct cl_option *)p1)->opt_text,
+ ((struct cl_option *)p2)->opt_text);
}
+#endif
/* Handle command-line options in (argc, argv).
Can be called multiple times, to handle multiple sets of options.
Returns if an unrecognized option is seen.
Returns number of strings consumed. */
-
int
cpp_handle_options (pfile, argc, argv)
cpp_reader *pfile;
{
int i;
int strings_processed;
+
+#ifdef HOST_EBCDIC
+ static int opts_sorted = 0;
+
+ if (!opts_sorted)
+ {
+ opts_sorted = 1;
+ /* For non-ASCII hosts, the array needs to be sorted at runtime */
+ qsort (cl_options, N_OPTS, sizeof (struct cl_option), opt_comp);
+ }
+#endif
+
for (i = 0; i < argc; i += strings_processed)
{
- strings_processed = cpp_handle_option (pfile, argc - i, argv + i);
+ strings_processed = handle_option (pfile, argc - i, argv + i);
if (strings_processed == 0)
break;
}
-isystem <dir> Add <dir> to the start of the system include path\n\
-idirafter <dir> Add <dir> to the end of the system include path\n\
-I <dir> Add <dir> to the end of the main include path\n\
+ -I- Fine-grained include path control; see info docs\n\
-nostdinc Do not search system include directories\n\
(dirs specified with -isystem will still be used)\n\
-nostdinc++ Do not search system include directories for C++\n\
-o <file> Put output into <file>\n\
-pedantic Issue all warnings demanded by strict ANSI C\n\
+ -pedantic-errors Issue -pedantic warnings as errors instead\n\
-traditional Follow K&R pre-processor behaviour\n\
-trigraphs Support ANSI C trigraphs\n\
-lang-c Assume that the input sources are in C\n\
-MD As -M, but put output in a .d file\n\
-MMD As -MD, but ignore system header files\n\
-MG Treat missing header file as generated files\n\
- -g Include #define and #undef directives in the output\n\
+ -g3 Include #define and #undef directives in the output\n\
-D<macro> Define a <macro> with string '1' as its value\n\
-D<macro>=<val> Define a <macro> with <val> as its value\n\
-A<question> (<answer>) Assert the <answer> to <question>\n\
+ -A-<question> (<answer>) Disable the <answer> to <question>\n\
-U<macro> Undefine <macro> \n\
-v Display the version number\n\
-H Print the name of header files as they are used\n\
-dD Preserve macro definitions in output\n\
-dN As -dD except that only the names are preserved\n\
-dI Include #include directives in the output\n\
- -ifoutput Describe skipped code blocks in output \n\
-P Do not generate #line directives\n\
-$ Do not allow '$' in identifiers\n\
-remap Remap file names when including files.\n\
+ --version Display version information\n\
-h or --help Display this information\n\
"), stdout);
}
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