/* Compiler driver program that can handle many languages.
Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
- 2010
+ 2010, 2011
Free Software Foundation, Inc.
This file is part of GCC.
#include "coretypes.h"
#include "multilib.h" /* before tm.h */
#include "tm.h"
-#include <signal.h>
-#if ! defined( SIGCHLD ) && defined( SIGCLD )
-# define SIGCHLD SIGCLD
-#endif
#include "xregex.h"
#include "obstack.h"
#include "intl.h"
#include "opts.h"
#include "vec.h"
-#ifdef HAVE_MMAP_FILE
-# include <sys/mman.h>
-# ifdef HAVE_MINCORE
-/* This is on Solaris. */
-# include <sys/types.h>
-# endif
-#endif
-
-#ifndef MAP_FAILED
-# define MAP_FAILED ((void *)-1)
-#endif
-
/* By default there is no special suffix for target executables. */
/* FIXME: when autoconf is fixed, remove the host check - dj */
#if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
#define LIBRARY_PATH_ENV "LIBRARY_PATH"
#endif
-#ifndef HAVE_KILL
-#define kill(p,s) raise(s)
-#endif
-
/* If a stage of compilation returns an exit status >= 1,
compilation of that file ceases. */
static const char *compare_debug_dump_opt_spec_function (int, const char **);
static const char *compare_debug_self_opt_spec_function (int, const char **);
static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
+static const char *pass_through_libs_spec_func (int, const char **);
\f
/* The Specs Language
Note - this command is position dependent. % commands in the
spec string before this one will see -S, % commands in the
spec string after this one will not.
+ %>S Similar to "%<S", but keep it in the GCC command line.
%<S* remove all occurrences of all switches beginning with -S from the
command line.
%:function(args)
# endif
#endif
+/* Conditional to test whether plugin is used or not.
+ FIXME: For slim LTO we will need to enable plugin unconditionally. This
+ still cause problems with PLUGIN_LD != LD and when plugin is built but
+ not useable. For GCC 4.6 we don't support slim LTO and thus we can enable
+ plugin only when LTO is enabled. We still honor explicit
+ -fuse-linker-plugin. */
+#ifdef HAVE_LTO_PLUGIN
+#define PLUGIN_COND "!fno-use-linker-plugin:%{flto|flto=*|fuse-linker-plugin"
+#define PLUGIN_COND_CLOSE "}"
+#else
+#define PLUGIN_COND "fuse-linker-plugin"
+#define PLUGIN_COND_CLOSE ""
+#endif
+
/* -u* was put back because both BSD and SysV seem to support it. */
/* %{static:} simply prevents an error message if the target machine
directories. */
/* We pass any -flto flags on to the linker, which is expected
to understand them. In practice, this means it had better be collect2. */
+/* %{e*} includes -export-dynamic; see comment in common.opt. */
#ifndef LINK_COMMAND_SPEC
#define LINK_COMMAND_SPEC "\
%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
%(linker) \
- %{fuse-linker-plugin: \
+ %{"PLUGIN_COND": \
-plugin %(linker_plugin_file) \
-plugin-opt=%(lto_wrapper) \
-plugin-opt=-fresolution=%u.res \
- %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)} \
- %{static:-plugin-opt=-pass-through=-lc} \
- } \
- %{flto*:%<fcompare-debug*} \
- %{flto*} %l " LINK_PIE_SPEC \
- "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
- %{s} %{t} %{u*} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
+ %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
+ }"PLUGIN_COND_CLOSE" \
+ %{flto|flto=*:%<fcompare-debug*} \
+ %{flto} %{flto=*} %l " LINK_PIE_SPEC \
+ "%X %{o*} %{e*} %{N} %{n} %{r}\
+ %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\
%{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
%{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
%(mflib) " STACK_SPLIT_SPEC "\
%{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
%{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
- %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
+ %{!nostdlib:%{!nostartfiles:%E}} %{T*} }}}}}}"
#endif
#ifndef LINK_LIBGCC_SPEC
static const char *linker_plugin_file_spec = "";
static const char *lto_wrapper_spec = "";
static const char *lto_gcc_spec = "";
-static const char *lto_libgcc_spec = "";
static const char *link_command_spec = LINK_COMMAND_SPEC;
static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
that we default the front end language better. */
static const char *trad_capable_cpp =
-"cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
+"cc1 -E %{traditional|traditional-cpp:-traditional-cpp}";
/* We don't wrap .d files in %W{} since a missing .d file, and
therefore no dependency entry, confuses make into thinking a .o
%{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
%{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
%{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
- %{Qn:-fno-ident} %{-help:--help}\
+ %{Qn:-fno-ident} %{Qy:} %{-help:--help}\
%{-target-help:--target-help}\
%{-version:--version}\
%{-help=*:--help=%*}\
%{coverage:-fprofile-arcs -ftest-coverage}";
static const char *asm_options =
-"%{--target-help:%:print-asm-header()} "
+"%{-target-help:%:print-asm-header()} "
#if HAVE_GNU_AS
/* If GNU AS is used, then convert -w (no warnings), -I, and -v
to the assembler equivalents. */
{".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
{".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
{".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
+ {".go", "#Go", 0, 1, 0},
/* Next come the entries for C. */
{".c", "@c", 0, 0, 1},
{"@c",
external preprocessor if -save-temps is given. */
"%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
%{!E:%{!M:%{!MM:\
- %{traditional|ftraditional:\
+ %{traditional:\
%eGNU C no longer supports -traditional without -E}\
%{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
%(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
%W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
{".i", "@cpp-output", 0, 0, 0},
{"@cpp-output",
- "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
- {".s", "@assembler", 0, 1, 0},
+ "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+ {".s", "@assembler", 0, 0, 0},
{"@assembler",
- "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
- {".sx", "@assembler-with-cpp", 0, 1, 0},
- {".S", "@assembler-with-cpp", 0, 1, 0},
+ "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
+ {".sx", "@assembler-with-cpp", 0, 0, 0},
+ {".S", "@assembler-with-cpp", 0, 0, 0},
{"@assembler-with-cpp",
#ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
"%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
%{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
as %(asm_debug) %(asm_options) %m.s %A }}}}"
#endif
- , 0, 1, 0},
+ , 0, 0, 0},
#include "specs.h"
/* Mark end of table. */
INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
- INIT_STATIC_SPEC ("lto_libgcc", <o_libgcc_spec),
INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
{ "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
{ "compare-debug-self-opt", compare_debug_self_opt_spec_function },
{ "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
+ { "pass-through-libs", pass_through_libs_spec_func },
#ifdef EXTRA_SPEC_FUNCTIONS
EXTRA_SPEC_FUNCTIONS
#endif
"-lgcc_eh"
#ifdef USE_LIBUNWIND_EXCEPTIONS
# ifdef HAVE_LD_STATIC_DYNAMIC
- " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
+ " %{!static:" LD_STATIC_OPTION "} -lunwind"
+ " %{!static:" LD_DYNAMIC_OPTION "}"
# else
" -lunwind"
# endif
}
fputc ('"', stderr);
}
+ /* If it's empty, print "". */
+ else if (!**j)
+ fprintf (stderr, " \"\"");
else
fprintf (stderr, " %s", *j);
}
}
else
for (j = commands[i].argv; *j; j++)
- fprintf (stderr, " %s", *j);
+ /* If it's empty, print "". */
+ if (!**j)
+ fprintf (stderr, " \"\"");
+ else
+ fprintf (stderr, " %s", *j);
/* Print a pipe symbol after all but the last command. */
if (i + 1 != n_commands)
The `validated' field is nonzero if any spec has looked at this switch;
if it remains zero at the end of the run, it must be meaningless. */
-#define SWITCH_LIVE 0x1
-#define SWITCH_FALSE 0x2
-#define SWITCH_IGNORE 0x4
-#define SWITCH_IGNORE_PERMANENTLY 0x8
+#define SWITCH_LIVE (1 << 0)
+#define SWITCH_FALSE (1 << 1)
+#define SWITCH_IGNORE (1 << 2)
+#define SWITCH_IGNORE_PERMANENTLY (1 << 3)
+#define SWITCH_KEEP_FOR_GCC (1 << 4)
struct switchstr
{
save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
return true;
+ case OPT_F:
+ /* Likewise -F. */
+ save_switch (concat ("-F", arg, NULL), 0, NULL, validated);
+ return true;
+
case OPT_save_temps:
save_temps_flag = SAVE_TEMPS_CWD;
validated = true;
struct cl_option_handlers handlers;
unsigned int j;
- GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
+ gcc_exec_prefix = getenv ("GCC_EXEC_PREFIX");
n_switches = 0;
n_infiles = 0;
/* COMPILER_PATH and LIBRARY_PATH have values
that are lists of directory names with colons. */
- GET_ENVIRONMENT (temp, "COMPILER_PATH");
+ temp = getenv ("COMPILER_PATH");
if (temp)
{
const char *startp, *endp;
}
}
- GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
+ temp = getenv (LIBRARY_PATH_ENV);
if (temp && *cross_compile == '0')
{
const char *startp, *endp;
}
/* Use LPATH like LIBRARY_PATH (for the CMU build program). */
- GET_ENVIRONMENT (temp, "LPATH");
+ temp = getenv ("LPATH");
if (temp && *cross_compile == '0')
{
const char *startp, *endp;
first_time = FALSE;
/* Ignore elided switches. */
- if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
+ if ((switches[i].live_cond
+ & (SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC))
+ == SWITCH_IGNORE)
continue;
obstack_grow (&collect_obstack, "'-", 2);
int i;
int value;
+ /* If it's an empty string argument to a switch, keep it as is. */
+ if (inswitch && !*p)
+ arg_going = 1;
+
while ((c = *p++))
/* If substituting a switch, treat all chars like letters.
Otherwise, NL, SPC, TAB and % are special. */
/* Henceforth ignore the option(s) matching the pattern
after the %<. */
case '<':
+ case '>':
{
unsigned len = 0;
int have_wildcard = 0;
int i;
+ int switch_option;
+
+ if (c == '>')
+ switch_option = SWITCH_IGNORE | SWITCH_KEEP_FOR_GCC;
+ else
+ switch_option = SWITCH_IGNORE;
while (p[len] && p[len] != ' ' && p[len] != '\t')
len++;
if (!strncmp (switches[i].part1, p, len - have_wildcard)
&& (have_wildcard || switches[i].part1[len] == '\0'))
{
- switches[i].live_cond |= SWITCH_IGNORE;
+ switches[i].live_cond |= switch_option;
switches[i].validated = 1;
}
case '*':
if (soft_matched_part)
{
- do_spec_1 (soft_matched_part, 1, NULL);
+ if (soft_matched_part[0])
+ do_spec_1 (soft_matched_part, 1, NULL);
do_spec_1 (" ", 0, NULL);
}
else
int num_linker_inputs = 0;
char *explicit_link_files;
char *specs_file;
+ char *lto_wrapper_file;
const char *p;
struct user_specs *uptr;
char **old_argv = argv;
/* Set up to remember the pathname of the lto wrapper. */
- lto_wrapper_spec = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
- if (lto_wrapper_spec)
+ lto_wrapper_file = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
+ if (lto_wrapper_file)
{
+ lto_wrapper_spec = lto_wrapper_file;
obstack_init (&collect_obstack);
obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
sizeof ("COLLECT_LTO_WRAPPER=") - 1);
{
printf (_("%s %s%s\n"), progname, pkgversion_string,
version_string);
- printf ("Copyright %s 2010 Free Software Foundation, Inc.\n",
+ printf ("Copyright %s 2011 Free Software Foundation, Inc.\n",
_("(C)"));
fputs (_("This is free software; see the source for copying conditions. There is NO\n\
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
if (n_infiles == added_libraries)
fatal_error ("no input files");
+ if (seen_error ())
+ goto out;
+
/* Make a place to record the compiler output file names
that correspond to the input files. */
int i;
for (i = 0; i < n_infiles ; i++)
- if (infiles[i].language && infiles[i].language[0] != '*')
+ if (infiles[i].incompiler
+ || (infiles[i].language && infiles[i].language[0] != '*'))
{
set_input (infiles[i].name);
break;
if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
{
int tmp = execution_count;
+#ifdef HAVE_LTO_PLUGIN
+ const char *fno_use_linker_plugin = "fno-use-linker-plugin";
+#else
const char *fuse_linker_plugin = "fuse-linker-plugin";
+#endif
/* We'll use ld if we can't find collect2. */
if (! strcmp (linker_name_spec, "collect2"))
linker_name_spec = "ld";
}
+#ifdef HAVE_LTO_PLUGIN
+ if (!switch_matches (fno_use_linker_plugin,
+ fno_use_linker_plugin + strlen (fno_use_linker_plugin), 0))
+#else
if (switch_matches (fuse_linker_plugin,
fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
+#endif
{
linker_plugin_file_spec = find_a_file (&exec_prefixes,
LTOPLUGINSONAME, R_OK,
false);
if (!linker_plugin_file_spec)
fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
-
- lto_libgcc_spec = find_a_file (&startfile_prefixes, "libgcc.a",
- R_OK, true);
- if (!lto_libgcc_spec)
- fatal_error ("could not find libgcc.a");
}
lto_gcc_spec = argv[0];
printf ("%s\n", bug_report_url);
}
+ out:
return (signal_count != 0 ? 2
: seen_error () ? (pass_exit_codes ? greatest_status : 1)
: 0);
return name;
}
+
+/* %:pass-through-libs spec function. Finds all -l options and input
+ file names in the lib spec passed to it, and makes a list of them
+ prepended with the plugin option to cause them to be passed through
+ to the final link after all the new object files have been added. */
+
+const char *
+pass_through_libs_spec_func (int argc, const char **argv)
+{
+ char *prepended = xstrdup (" ");
+ int n;
+ /* Shlemiel the painter's algorithm. Innately horrible, but at least
+ we know that there will never be more than a handful of strings to
+ concat, and it's only once per run, so it's not worth optimising. */
+ for (n = 0; n < argc; n++)
+ {
+ char *old = prepended;
+ /* Anything that isn't an option is a full path to an output
+ file; pass it through if it ends in '.a'. Among options,
+ pass only -l. */
+ if (argv[n][0] == '-' && argv[n][1] == 'l')
+ {
+ const char *lopt = argv[n] + 2;
+ /* Handle both joined and non-joined -l options. If for any
+ reason there's a trailing -l with no joined or following
+ arg just discard it. */
+ if (!*lopt && ++n >= argc)
+ break;
+ else if (!*lopt)
+ lopt = argv[n];
+ prepended = concat (prepended, "-plugin-opt=-pass-through=-l",
+ lopt, " ", NULL);
+ }
+ else if (!strcmp (".a", argv[n] + strlen (argv[n]) - 2))
+ {
+ prepended = concat (prepended, "-plugin-opt=-pass-through=",
+ argv[n], " ", NULL);
+ }
+ if (prepended != old)
+ free (old);
+ }
+ return prepended;
+}
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