#include "diagnostic.h"
#include "flags.h"
#include "opts.h"
+#include "vec.h"
#ifdef HAVE_MMAP_FILE
# include <sys/mman.h>
static int print_version;
-/* Flag indicating whether we should print the command and arguments */
-
-static int verbose_flag;
-
/* Flag indicating whether we should ONLY print the command and
arguments (like verbose_flag) without executing the command.
Displayed arguments are quoted so that the generated command
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
/* We want %{T*} after %{L*} and %D so that it can be used to specify linker
scripts which exist in user specified directories, or in standard
directories. */
-/* We pass any -flto and -fwhopr flags on to the linker, which is expected
+/* We pass any -flto flags on to the linker, which is expected
to understand them. In practice, this means it had better be collect2. */
#ifndef LINK_COMMAND_SPEC
#define LINK_COMMAND_SPEC "\
-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} \
+ %{!nostdlib:%{!nodefaultlibs:%:pass-through-libs(%(link_gcc_c_sequence))}} \
} \
- %{flto:%<fcompare-debug*} %{fwhopr*:%<fcompare-debug*} \
- %{flto} %{fwhopr*} %l " LINK_PIE_SPEC \
+ %{flto*:%<fcompare-debug*} \
+ %{flto*} %l " LINK_PIE_SPEC \
"%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
- %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
+ %{s} %{t} %{u*} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
%{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
%{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
%(mflib) " STACK_SPLIT_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;
static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
+typedef char *char_p; /* For DEF_VEC_P. */
+DEF_VEC_P(char_p);
+DEF_VEC_ALLOC_P(char_p,heap);
+
/* A vector of options to give to the linker.
These options are accumulated by %x,
and substituted into the linker command with %X. */
-static int n_linker_options;
-static char **linker_options;
+static VEC(char_p,heap) *linker_options;
/* A vector of options to give to the assembler.
These options are accumulated by -Wa,
and substituted into the assembler command with %Y. */
-static int n_assembler_options;
-static char **assembler_options;
+static VEC(char_p,heap) *assembler_options;
/* A vector of options to give to the preprocessor.
These options are accumulated by -Wp,
and substituted into the preprocessor command with %Z. */
-static int n_preprocessor_options;
-static char **preprocessor_options;
+static VEC(char_p,heap) *preprocessor_options;
\f
static char *
skip_whitespace (char *p)
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
\f
/* Accumulate a command (program name and args), and run it. */
-/* Vector of pointers to arguments in the current line of specifications. */
-
-static const char **argbuf;
-
-/* Number of elements allocated in argbuf. */
-
-static int argbuf_length;
+typedef const char *const_char_p; /* For DEF_VEC_P. */
+DEF_VEC_P(const_char_p);
+DEF_VEC_ALLOC_P(const_char_p,heap);
-/* Number of elements in argbuf currently in use (containing args). */
+/* Vector of pointers to arguments in the current line of specifications. */
-static int argbuf_index;
+static VEC(const_char_p,heap) *argbuf;
-/* Position in the argbuf array containing the name of the output file
+/* Position in the argbuf vector containing the name of the output file
(the value associated with the "-o" flag). */
static int have_o_argbuf_index = 0;
static void
alloc_args (void)
{
- argbuf_length = 10;
- argbuf = XNEWVEC (const char *, argbuf_length);
+ argbuf = VEC_alloc (const_char_p, heap, 10);
}
/* Clear out the vector of arguments (after a command is executed). */
static void
clear_args (void)
{
- argbuf_index = 0;
+ VEC_truncate (const_char_p, argbuf, 0);
}
/* Add one argument to the vector at the end.
static void
store_arg (const char *arg, int delete_always, int delete_failure)
{
- if (argbuf_index + 1 == argbuf_length)
- argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
-
- argbuf[argbuf_index++] = arg;
- argbuf[argbuf_index] = 0;
+ VEC_safe_push (const_char_p, heap, argbuf, arg);
if (strcmp (arg, "-o") == 0)
- have_o_argbuf_index = argbuf_index;
+ have_o_argbuf_index = VEC_length (const_char_p, argbuf);
if (delete_always || delete_failure)
{
const char *p;
const char *prog; /* program name. */
const char **argv; /* vector of args. */
};
+ const char *arg;
struct command *commands; /* each command buffer with above info. */
if (wrapper_string)
{
- string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
- argbuf[0] = (string) ? string : argbuf[0];
+ string = find_a_file (&exec_prefixes,
+ VEC_index (const_char_p, argbuf, 0), X_OK, false);
+ if (string)
+ VEC_replace (const_char_p, argbuf, 0, string);
insert_wrapper (wrapper_string);
}
/* Count # of piped commands. */
- for (n_commands = 1, i = 0; i < argbuf_index; i++)
- if (strcmp (argbuf[i], "|") == 0)
+ for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
+ if (strcmp (arg, "|") == 0)
n_commands++;
/* Get storage for each command. */
and record info about each one.
Also search for the programs that are to be run. */
- commands[0].prog = argbuf[0]; /* first command. */
- commands[0].argv = &argbuf[0];
+ VEC_safe_push (const_char_p, heap, argbuf, 0);
+
+ commands[0].prog = VEC_index (const_char_p, argbuf, 0); /* first command. */
+ commands[0].argv = VEC_address (const_char_p, argbuf);
if (!wrapper_string)
{
commands[0].argv[0] = (string) ? string : commands[0].argv[0];
}
- for (n_commands = 1, i = 0; i < argbuf_index; i++)
- if (strcmp (argbuf[i], "|") == 0)
+ for (n_commands = 1, i = 0; VEC_iterate (const_char_p, argbuf, i, arg); i++)
+ if (arg && strcmp (arg, "|") == 0)
{ /* each command. */
#if defined (__MSDOS__) || defined (OS2) || defined (VMS)
fatal_error ("-pipe not supported");
#endif
- argbuf[i] = 0; /* termination of command args. */
- commands[n_commands].prog = argbuf[i + 1];
- commands[n_commands].argv = &argbuf[i + 1];
+ VEC_replace (const_char_p, argbuf, i, 0); /* Termination of
+ command args. */
+ commands[n_commands].prog = VEC_index (const_char_p, argbuf, i + 1);
+ commands[n_commands].argv
+ = &(VEC_address (const_char_p, argbuf))[i + 1];
string = find_a_file (&exec_prefixes, commands[n_commands].prog,
X_OK, false);
if (string)
n_commands++;
}
- argbuf[argbuf_index] = 0;
-
/* If -v, print what we are about to do, and maybe query. */
if (verbose_flag)
static void
add_preprocessor_option (const char *option, int len)
{
- n_preprocessor_options++;
-
- if (! preprocessor_options)
- preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
- else
- preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
- n_preprocessor_options);
-
- preprocessor_options [n_preprocessor_options - 1] =
- save_string (option, len);
+ VEC_safe_push (char_p, heap, preprocessor_options,
+ save_string (option, len));
}
static void
add_assembler_option (const char *option, int len)
{
- n_assembler_options++;
-
- if (! assembler_options)
- assembler_options = XNEWVEC (char *, n_assembler_options);
- else
- assembler_options = XRESIZEVEC (char *, assembler_options,
- n_assembler_options);
-
- assembler_options [n_assembler_options - 1] = save_string (option, len);
+ VEC_safe_push (char_p, heap, assembler_options, save_string (option, len));
}
static void
add_linker_option (const char *option, int len)
{
- n_linker_options++;
-
- if (! linker_options)
- linker_options = XNEWVEC (char *, n_linker_options);
- else
- linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
-
- linker_options [n_linker_options - 1] = save_string (option, len);
+ VEC_safe_push (char_p, heap, linker_options, save_string (option, len));
}
\f
/* Allocate space for an input file in infiles. */
struct gcc_options *opts_set,
const struct cl_decoded_option *decoded,
unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
- const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
+ location_t loc,
+ const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED,
+ diagnostic_context *dc)
{
size_t opt_index = decoded->opt_index;
const char *arg = decoded->arg;
gcc_assert (opts == &global_options);
gcc_assert (opts_set == &global_options_set);
gcc_assert (kind == DK_UNSPECIFIED);
+ gcc_assert (loc == UNKNOWN_LOCATION);
+ gcc_assert (dc == global_dc);
switch (opt_index)
{
is intended for use in shell scripts to capture the
driver-generated command line. */
verbose_only_flag++;
- verbose_flag++;
+ verbose_flag = 1;
do_save = false;
break;
validated = true;
break;
- case OPT_v: /* Print our subcommands and print versions. */
- verbose_flag++;
- break;
-
case OPT_x:
spec_lang = arg;
if (!strcmp (spec_lang, "none"))
}
read_cmdline_option (&global_options, &global_options_set,
- decoded_options + j, CL_DRIVER, &handlers,
- global_dc);
+ decoded_options + j, UNKNOWN_LOCATION,
+ CL_DRIVER, &handlers, global_dc);
}
/* If -save-temps=obj and -o name, create the prefix to use for %b.
int i;
char *buf = xstrdup (wrapper);
char *p = buf;
+ unsigned int old_length = VEC_length (const_char_p, argbuf);
do
{
}
while ((p = strchr (p, ',')) != NULL);
- if (argbuf_index + n >= argbuf_length)
- {
- argbuf_length = argbuf_length * 2;
- while (argbuf_length < argbuf_index + n)
- argbuf_length *= 2;
- argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
- }
- for (i = argbuf_index - 1; i >= 0; i--)
- argbuf[i + n] = argbuf[i];
+ VEC_safe_grow (const_char_p, heap, argbuf, old_length + n);
+ memmove (VEC_address (const_char_p, argbuf) + n,
+ VEC_address (const_char_p, argbuf),
+ old_length * sizeof (const_char_p));
i = 0;
p = buf;
*p = 0;
p++;
}
- argbuf[i++] = p;
+ VEC_replace (const_char_p, argbuf, i, p);
+ i++;
}
while ((p = strchr (p, ',')) != NULL);
gcc_assert (i == n);
- argbuf_index += n;
}
/* Process the spec SPEC and run the commands specified therein.
If -pipe, this forces out the last command if it ended in `|'. */
if (value == 0)
{
- if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
- argbuf_index--;
+ if (VEC_length (const_char_p, argbuf) > 0
+ && !strcmp (VEC_last (const_char_p, argbuf), "|"))
+ VEC_pop (const_char_p, argbuf);
set_collect_gcc_options ();
- if (argbuf_index > 0)
+ if (VEC_length (const_char_p, argbuf) > 0)
value = execute ();
}
if ((switches[i].live_cond & SWITCH_IGNORE))
switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
- if (argbuf_index > 0)
+ if (VEC_length (const_char_p, argbuf) > 0)
{
const char **argbuf_copy;
struct cl_decoded_option *decoded_options;
/* Create a copy of argbuf with a dummy argv[0] entry for
decode_cmdline_options_to_array. */
- argbuf_copy = XNEWVEC (const char *, argbuf_index + 1);
+ argbuf_copy = XNEWVEC (const char *,
+ VEC_length (const_char_p, argbuf) + 1);
argbuf_copy[0] = "";
- memcpy (argbuf_copy + 1, argbuf, argbuf_index * sizeof (const char *));
+ memcpy (argbuf_copy + 1, VEC_address (const_char_p, argbuf),
+ VEC_length (const_char_p, argbuf) * sizeof (const char *));
- decode_cmdline_options_to_array (argbuf_index + 1, argbuf_copy,
+ decode_cmdline_options_to_array (VEC_length (const_char_p, argbuf) + 1,
+ argbuf_copy,
CL_DRIVER, &decoded_options,
&decoded_options_count);
default:
read_cmdline_option (&global_options, &global_options_set,
- decoded_options + j, CL_DRIVER, &handlers,
- global_dc);
+ decoded_options + j, UNKNOWN_LOCATION,
+ CL_DRIVER, &handlers, global_dc);
break;
}
}
return false;
}
+/* Process each member of VEC as a spec. */
+
+static void
+do_specs_vec (VEC(char_p,heap) *vec)
+{
+ unsigned ix;
+ char *opt;
+
+ FOR_EACH_VEC_ELT (char_p, vec, ix, opt)
+ {
+ do_spec_1 (opt, 1, NULL);
+ /* Make each accumulated option a separate argument. */
+ do_spec_1 (" ", 0, NULL);
+ }
+}
+
/* Process the sub-spec SPEC as a portion of a larger spec.
This is like processing a whole spec except that we do
not initialize at the beginning and we do not supply a
case '\n':
end_going_arg ();
- if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
+ if (VEC_length (const_char_p, argbuf) > 0
+ && !strcmp (VEC_last (const_char_p, argbuf), "|"))
{
/* A `|' before the newline means use a pipe here,
but only if -pipe was specified.
break;
}
else
- argbuf_index--;
+ VEC_pop (const_char_p, argbuf);
}
set_collect_gcc_options ();
- if (argbuf_index > 0)
+ if (VEC_length (const_char_p, argbuf) > 0)
{
value = execute ();
if (value)
case 'W':
{
- int cur_index = argbuf_index;
+ unsigned int cur_index = VEC_length (const_char_p, argbuf);
/* Handle the {...} following the %W. */
if (*p != '{')
fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
end_going_arg ();
/* If any args were output, mark the last one for deletion
on failure. */
- if (argbuf_index != cur_index)
- record_temp_file (argbuf[argbuf_index - 1], 0, 1);
+ if (VEC_length (const_char_p, argbuf) != cur_index)
+ record_temp_file (VEC_last (const_char_p, argbuf), 0, 1);
break;
}
{
const char *p1 = p;
char *string;
+ char *opt;
+ unsigned ix;
/* Skip past the option value and make a copy. */
if (*p != '{')
string = save_string (p1 + 1, p - p1 - 2);
/* See if we already recorded this option. */
- for (i = 0; i < n_linker_options; i++)
- if (! strcmp (string, linker_options[i]))
+ FOR_EACH_VEC_ELT (char_p, linker_options, ix, opt)
+ if (! strcmp (string, opt))
{
free (string);
return 0;
/* Dump out the options accumulated previously using %x. */
case 'X':
- for (i = 0; i < n_linker_options; i++)
- {
- do_spec_1 (linker_options[i], 1, NULL);
- /* Make each accumulated option a separate argument. */
- do_spec_1 (" ", 0, NULL);
- }
+ do_specs_vec (linker_options);
break;
/* Dump out the options accumulated previously using -Wa,. */
case 'Y':
- for (i = 0; i < n_assembler_options; i++)
- {
- do_spec_1 (assembler_options[i], 1, NULL);
- /* Make each accumulated option a separate argument. */
- do_spec_1 (" ", 0, NULL);
- }
+ do_specs_vec (assembler_options);
break;
/* Dump out the options accumulated previously using -Wp,. */
case 'Z':
- for (i = 0; i < n_preprocessor_options; i++)
- {
- do_spec_1 (preprocessor_options[i], 1, NULL);
- /* Make each accumulated option a separate argument. */
- do_spec_1 (" ", 0, NULL);
- }
+ do_specs_vec (preprocessor_options);
break;
/* Here are digits and numbers that just process
const char *funcval;
/* Saved spec processing context. */
- int save_argbuf_index;
- int save_argbuf_length;
- const char **save_argbuf;
+ VEC(const_char_p,heap) *save_argbuf;
int save_arg_going;
int save_delete_this_arg;
fatal_error ("unknown spec function %qs", func);
/* Push the spec processing context. */
- save_argbuf_index = argbuf_index;
- save_argbuf_length = argbuf_length;
save_argbuf = argbuf;
save_arg_going = arg_going;
/* argbuf_index is an index for the next argument to be inserted, and
so contains the count of the args already inserted. */
- funcval = (*sf->func) (argbuf_index, argbuf);
+ funcval = (*sf->func) (VEC_length (const_char_p, argbuf),
+ VEC_address (const_char_p, argbuf));
/* Pop the spec processing context. */
- argbuf_index = save_argbuf_index;
- argbuf_length = save_argbuf_length;
- free (argbuf);
+ VEC_free (const_char_p, heap, argbuf);
argbuf = save_argbuf;
arg_going = save_arg_going;
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;
if (*sysroot_suffix_spec != 0
&& do_spec_2 (sysroot_suffix_spec) == 0)
{
- if (argbuf_index > 1)
+ if (VEC_length (const_char_p, argbuf) > 1)
error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
- else if (argbuf_index == 1)
- target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
+ else if (VEC_length (const_char_p, argbuf) == 1)
+ target_sysroot_suffix = xstrdup (VEC_last (const_char_p, argbuf));
}
#ifdef HAVE_LD_SYSROOT
if (*sysroot_hdrs_suffix_spec != 0
&& do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
{
- if (argbuf_index > 1)
+ if (VEC_length (const_char_p, argbuf) > 1)
error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
- else if (argbuf_index == 1)
- target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
+ else if (VEC_length (const_char_p, argbuf) == 1)
+ target_sysroot_hdrs_suffix = xstrdup (VEC_last (const_char_p, argbuf));
}
/* Look for startfiles in the standard places. */
&& do_spec_2 (startfile_prefix_spec) == 0
&& do_spec_1 (" ", 0, NULL) == 0)
{
+ const char *arg;
int ndx;
- for (ndx = 0; ndx < argbuf_index; ndx++)
- add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
+ FOR_EACH_VEC_ELT (const_char_p, argbuf, ndx, arg)
+ add_sysrooted_prefix (&startfile_prefixes, arg, "BINUTILS",
PREFIX_PRIORITY_LAST, 0, 1);
}
/* We should eventually get rid of all these and stick to
/* 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);
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];
do_spec_2 ("%{fdump-final-insns=*:%*}");
do_spec_1 (" ", 0, NULL);
- if (argbuf_index > 0 && strcmp (argv[argbuf_index - 1], "."))
+ if (VEC_length (const_char_p, argbuf) > 0
+ && strcmp (argv[VEC_length (const_char_p, argbuf) - 1], "."))
{
if (!compare_debug)
return NULL;
- name = xstrdup (argv[argbuf_index - 1]);
+ name = xstrdup (argv[VEC_length (const_char_p, argbuf) - 1]);
ret = NULL;
}
else
{
const char *ext = NULL;
- if (argbuf_index > 0)
+ if (VEC_length (const_char_p, argbuf) > 0)
{
do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
ext = ".gkd";
do_spec_1 (" ", 0, NULL);
- gcc_assert (argbuf_index > 0);
+ gcc_assert (VEC_length (const_char_p, argbuf) > 0);
- name = concat (argbuf[argbuf_index - 1], ext, NULL);
+ name = concat (VEC_last (const_char_p, argbuf), ext, NULL);
ret = concat ("-fdump-final-insns=", name, NULL);
}
do_spec_2 ("%{c|S:%{o*:%*}}");
do_spec_1 (" ", 0, NULL);
- if (argbuf_index > 0)
+ if (VEC_length (const_char_p, argbuf) > 0)
debug_auxbase_opt = concat ("-auxbase-strip ",
- argbuf[argbuf_index - 1],
+ VEC_last (const_char_p, argbuf),
NULL);
else
debug_auxbase_opt = NULL;
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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