/* Wrapper to call lto. Used by collect2 and the linker plugin.
- Copyright (C) 2009 Free Software Foundation, Inc.
+ Copyright (C) 2009-2015 Free Software Foundation, Inc.
Factored out of collect2 by Rafael Espindola <espindola@google.com>
The above will print something like
/tmp/ccwbQ8B2.lto.o
- If -fwhopr is used instead, more than one file might be produced
+ If WHOPR is used instead, more than one file might be produced
./ccXj2DTk.lto.ltrans.o
./ccCJuXGv.lto.ltrans.o
*/
#include "config.h"
#include "system.h"
#include "coretypes.h"
-#include "tm.h"
#include "intl.h"
-#include "libiberty.h"
-
-int debug; /* true if -debug */
+#include "diagnostic.h"
+#include "obstack.h"
+#include "opts.h"
+#include "options.h"
+#include "simple-object.h"
+#include "lto-section-names.h"
+#include "collect-utils.h"
+
+/* Environment variable, used for passing the names of offload targets from GCC
+ driver to lto-wrapper. */
+#define OFFLOAD_TARGET_NAMES_ENV "OFFLOAD_TARGET_NAMES"
enum lto_mode_d {
- LTO_MODE_NONE, /* Not doing LTO. */
- LTO_MODE_LTO, /* Normal LTO. */
- LTO_MODE_WHOPR /* WHOPR. */
+ LTO_MODE_NONE, /* Not doing LTO. */
+ LTO_MODE_LTO, /* Normal LTO. */
+ LTO_MODE_WHOPR /* WHOPR. */
};
/* Current LTO mode. */
static char *ltrans_output_file;
static char *flto_out;
-static char *args_name;
+static unsigned int nr;
+static char **input_names;
+static char **output_names;
+static char **offload_names;
+static const char *offloadbegin, *offloadend;
+static char *makefile;
-static void maybe_unlink_file (const char *);
+const char tool_name[] = "lto-wrapper";
-/* Delete tempfiles and exit function. */
+/* Delete tempfiles. Called from utils_cleanup. */
-static void
-lto_wrapper_exit (int status)
+void
+tool_cleanup (bool)
{
+ unsigned int i;
+
if (ltrans_output_file)
- maybe_unlink_file (ltrans_output_file);
+ maybe_unlink (ltrans_output_file);
if (flto_out)
- maybe_unlink_file (flto_out);
- if (args_name)
- maybe_unlink_file (args_name);
- exit (status);
+ maybe_unlink (flto_out);
+ if (makefile)
+ maybe_unlink (makefile);
+ for (i = 0; i < nr; ++i)
+ {
+ maybe_unlink (input_names[i]);
+ if (output_names[i])
+ maybe_unlink (output_names[i]);
+ }
}
-/* Just die. CMSGID is the error message. */
-
-static void __attribute__ ((format (printf, 1, 2)))
-fatal (const char * cmsgid, ...)
+static void
+lto_wrapper_cleanup (void)
{
- va_list ap;
+ utils_cleanup (false);
+}
- va_start (ap, cmsgid);
- fprintf (stderr, "lto-wrapper: ");
- vfprintf (stderr, _(cmsgid), ap);
- fprintf (stderr, "\n");
- va_end (ap);
+/* Unlink a temporary LTRANS file unless requested otherwise. */
- lto_wrapper_exit (FATAL_EXIT_CODE);
+void
+maybe_unlink (const char *file)
+{
+ if (!save_temps)
+ {
+ if (unlink_if_ordinary (file)
+ && errno != ENOENT)
+ fatal_error (input_location, "deleting LTRANS file %s: %m", file);
+ }
+ else if (verbose)
+ fprintf (stderr, "[Leaving LTRANS %s]\n", file);
}
+/* Template of LTRANS dumpbase suffix. */
+#define DUMPBASE_SUFFIX ".ltrans18446744073709551615"
-/* Die when sys call fails. CMSGID is the error message. */
+/* Create decoded options from the COLLECT_GCC and COLLECT_GCC_OPTIONS
+ environment according to LANG_MASK. */
-static void __attribute__ ((format (printf, 1, 2)))
-fatal_perror (const char *cmsgid, ...)
+static void
+get_options_from_collect_gcc_options (const char *collect_gcc,
+ const char *collect_gcc_options,
+ unsigned int lang_mask,
+ struct cl_decoded_option **decoded_options,
+ unsigned int *decoded_options_count)
{
- int e = errno;
- va_list ap;
+ struct obstack argv_obstack;
+ char *argv_storage;
+ const char **argv;
+ int j, k, argc;
+
+ argv_storage = xstrdup (collect_gcc_options);
+ obstack_init (&argv_obstack);
+ obstack_ptr_grow (&argv_obstack, collect_gcc);
+
+ for (j = 0, k = 0; argv_storage[j] != '\0'; ++j)
+ {
+ if (argv_storage[j] == '\'')
+ {
+ obstack_ptr_grow (&argv_obstack, &argv_storage[k]);
+ ++j;
+ do
+ {
+ if (argv_storage[j] == '\0')
+ fatal_error (input_location, "malformed COLLECT_GCC_OPTIONS");
+ else if (strncmp (&argv_storage[j], "'\\''", 4) == 0)
+ {
+ argv_storage[k++] = '\'';
+ j += 4;
+ }
+ else if (argv_storage[j] == '\'')
+ break;
+ else
+ argv_storage[k++] = argv_storage[j++];
+ }
+ while (1);
+ argv_storage[k++] = '\0';
+ }
+ }
- va_start (ap, cmsgid);
- fprintf (stderr, "lto-wrapper: ");
- vfprintf (stderr, _(cmsgid), ap);
- fprintf (stderr, ": %s\n", xstrerror (e));
- va_end (ap);
+ obstack_ptr_grow (&argv_obstack, NULL);
+ argc = obstack_object_size (&argv_obstack) / sizeof (void *) - 1;
+ argv = XOBFINISH (&argv_obstack, const char **);
- lto_wrapper_exit (FATAL_EXIT_CODE);
+ decode_cmdline_options_to_array (argc, (const char **)argv,
+ lang_mask,
+ decoded_options, decoded_options_count);
+ obstack_free (&argv_obstack, NULL);
}
+/* Append OPTION to the options array DECODED_OPTIONS with size
+ DECODED_OPTIONS_COUNT. */
+
+static void
+append_option (struct cl_decoded_option **decoded_options,
+ unsigned int *decoded_options_count,
+ struct cl_decoded_option *option)
+{
+ ++*decoded_options_count;
+ *decoded_options
+ = (struct cl_decoded_option *)
+ xrealloc (*decoded_options,
+ (*decoded_options_count
+ * sizeof (struct cl_decoded_option)));
+ memcpy (&(*decoded_options)[*decoded_options_count - 1], option,
+ sizeof (struct cl_decoded_option));
+}
-/* Execute a program, and wait for the reply. ARGV are the arguments. The
- last one must be NULL. */
+/* Try to merge and complain about options FDECODED_OPTIONS when applied
+ ontop of DECODED_OPTIONS. */
-static struct pex_obj *
-collect_execute (char **argv)
+static void
+merge_and_complain (struct cl_decoded_option **decoded_options,
+ unsigned int *decoded_options_count,
+ struct cl_decoded_option *fdecoded_options,
+ unsigned int fdecoded_options_count)
{
- struct pex_obj *pex;
- const char *errmsg;
- int err;
+ unsigned int i, j;
+
+ /* ??? Merge options from files. Most cases can be
+ handled by either unioning or intersecting
+ (for example -fwrapv is a case for unioning,
+ -ffast-math is for intersection). Most complaints
+ about real conflicts between different options can
+ be deferred to the compiler proper. Options that
+ we can neither safely handle by intersection nor
+ unioning would need to be complained about here.
+ Ideally we'd have a flag in the opt files that
+ tells whether to union or intersect or reject.
+ In absence of that it's unclear what a good default is.
+ It's also difficult to get positional handling correct. */
+
+ /* The following does what the old LTO option code did,
+ union all target and a selected set of common options. */
+ for (i = 0; i < fdecoded_options_count; ++i)
+ {
+ struct cl_decoded_option *foption = &fdecoded_options[i];
+ switch (foption->opt_index)
+ {
+ case OPT_SPECIAL_unknown:
+ case OPT_SPECIAL_ignore:
+ case OPT_SPECIAL_program_name:
+ case OPT_SPECIAL_input_file:
+ break;
+
+ default:
+ if (!(cl_options[foption->opt_index].flags & CL_TARGET))
+ break;
+
+ /* Fallthru. */
+ case OPT_fPIC:
+ case OPT_fpic:
+ case OPT_fPIE:
+ case OPT_fpie:
+ case OPT_fcommon:
+ case OPT_fexceptions:
+ case OPT_fnon_call_exceptions:
+ case OPT_fgnu_tm:
+ /* Do what the old LTO code did - collect exactly one option
+ setting per OPT code, we pick the first we encounter.
+ ??? This doesn't make too much sense, but when it doesn't
+ then we should complain. */
+ for (j = 0; j < *decoded_options_count; ++j)
+ if ((*decoded_options)[j].opt_index == foption->opt_index)
+ break;
+ if (j == *decoded_options_count)
+ append_option (decoded_options, decoded_options_count, foption);
+ break;
+
+ case OPT_ftrapv:
+ case OPT_fstrict_overflow:
+ case OPT_ffp_contract_:
+ /* For selected options we can merge conservatively. */
+ for (j = 0; j < *decoded_options_count; ++j)
+ if ((*decoded_options)[j].opt_index == foption->opt_index)
+ break;
+ if (j == *decoded_options_count)
+ append_option (decoded_options, decoded_options_count, foption);
+ /* FP_CONTRACT_OFF < FP_CONTRACT_ON < FP_CONTRACT_FAST,
+ -fno-trapv < -ftrapv,
+ -fno-strict-overflow < -fstrict-overflow */
+ else if (foption->value < (*decoded_options)[j].value)
+ (*decoded_options)[j] = *foption;
+ break;
+
+ case OPT_fmath_errno:
+ case OPT_fsigned_zeros:
+ case OPT_ftrapping_math:
+ case OPT_fwrapv:
+ case OPT_fopenmp:
+ case OPT_fopenacc:
+ /* For selected options we can merge conservatively. */
+ for (j = 0; j < *decoded_options_count; ++j)
+ if ((*decoded_options)[j].opt_index == foption->opt_index)
+ break;
+ if (j == *decoded_options_count)
+ append_option (decoded_options, decoded_options_count, foption);
+ /* -fmath-errno > -fno-math-errno,
+ -fsigned-zeros > -fno-signed-zeros,
+ -ftrapping-math -> -fno-trapping-math,
+ -fwrapv > -fno-wrapv. */
+ else if (foption->value > (*decoded_options)[j].value)
+ (*decoded_options)[j] = *foption;
+ break;
+
+ case OPT_freg_struct_return:
+ case OPT_fpcc_struct_return:
+ case OPT_fshort_double:
+ for (j = 0; j < *decoded_options_count; ++j)
+ if ((*decoded_options)[j].opt_index == foption->opt_index)
+ break;
+ if (j == *decoded_options_count)
+ fatal_error (input_location,
+ "Option %s not used consistently in all LTO input"
+ " files", foption->orig_option_with_args_text);
+ break;
+
+ case OPT_foffload_abi_:
+ for (j = 0; j < *decoded_options_count; ++j)
+ if ((*decoded_options)[j].opt_index == foption->opt_index)
+ break;
+ if (j == *decoded_options_count)
+ append_option (decoded_options, decoded_options_count, foption);
+ else if (foption->value != (*decoded_options)[j].value)
+ fatal_error (input_location,
+ "Option %s not used consistently in all LTO input"
+ " files", foption->orig_option_with_args_text);
+ break;
+
+ case OPT_O:
+ case OPT_Ofast:
+ case OPT_Og:
+ case OPT_Os:
+ for (j = 0; j < *decoded_options_count; ++j)
+ if ((*decoded_options)[j].opt_index == OPT_O
+ || (*decoded_options)[j].opt_index == OPT_Ofast
+ || (*decoded_options)[j].opt_index == OPT_Og
+ || (*decoded_options)[j].opt_index == OPT_Os)
+ break;
+ if (j == *decoded_options_count)
+ append_option (decoded_options, decoded_options_count, foption);
+ else if ((*decoded_options)[j].opt_index == foption->opt_index
+ && foption->opt_index != OPT_O)
+ /* Exact same options get merged. */
+ ;
+ else
+ {
+ /* For mismatched option kinds preserve the optimization
+ level only, thus merge it as -On. This also handles
+ merging of same optimization level -On. */
+ int level = 0;
+ switch (foption->opt_index)
+ {
+ case OPT_O:
+ if (foption->arg[0] == '\0')
+ level = MAX (level, 1);
+ else
+ level = MAX (level, atoi (foption->arg));
+ break;
+ case OPT_Ofast:
+ level = MAX (level, 3);
+ break;
+ case OPT_Og:
+ level = MAX (level, 1);
+ break;
+ case OPT_Os:
+ level = MAX (level, 2);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ switch ((*decoded_options)[j].opt_index)
+ {
+ case OPT_O:
+ if ((*decoded_options)[j].arg[0] == '\0')
+ level = MAX (level, 1);
+ else
+ level = MAX (level, atoi ((*decoded_options)[j].arg));
+ break;
+ case OPT_Ofast:
+ level = MAX (level, 3);
+ break;
+ case OPT_Og:
+ level = MAX (level, 1);
+ break;
+ case OPT_Os:
+ level = MAX (level, 2);
+ break;
+ default:
+ gcc_unreachable ();
+ }
+ (*decoded_options)[j].opt_index = OPT_O;
+ char *tem;
+ tem = xasprintf ("-O%d", level);
+ (*decoded_options)[j].arg = &tem[2];
+ (*decoded_options)[j].canonical_option[0] = tem;
+ (*decoded_options)[j].value = 1;
+ }
+ break;
+
+ case OPT_foffload_:
+ append_option (decoded_options, decoded_options_count, foption);
+ break;
+ }
+ }
+}
- if (debug)
+/* Auxiliary function that frees elements of PTR and PTR itself.
+ N is number of elements to be freed. If PTR is NULL, nothing is freed.
+ If an element is NULL, subsequent elements are not freed. */
+
+static void **
+free_array_of_ptrs (void **ptr, unsigned n)
+{
+ if (!ptr)
+ return NULL;
+ for (unsigned i = 0; i < n; i++)
{
- char **p_argv;
- const char *str;
+ if (!ptr[i])
+ break;
+ free (ptr[i]);
+ }
+ free (ptr);
+ return NULL;
+}
+
+/* Parse STR, saving found tokens into PVALUES and return their number.
+ Tokens are assumed to be delimited by ':'. If APPEND is non-null,
+ append it to every token we find. */
- for (p_argv = argv; (str = *p_argv) != (char *) 0; p_argv++)
- fprintf (stderr, " %s", str);
+static unsigned
+parse_env_var (const char *str, char ***pvalues, const char *append)
+{
+ const char *curval, *nextval;
+ char **values;
+ unsigned num = 1, i;
- fprintf (stderr, "\n");
+ curval = strchr (str, ':');
+ while (curval)
+ {
+ num++;
+ curval = strchr (curval + 1, ':');
}
- fflush (stdout);
- fflush (stderr);
+ values = (char**) xmalloc (num * sizeof (char*));
+ curval = str;
+ nextval = strchr (curval, ':');
+ if (nextval == NULL)
+ nextval = strchr (curval, '\0');
+
+ int append_len = append ? strlen (append) : 0;
+ for (i = 0; i < num; i++)
+ {
+ int l = nextval - curval;
+ values[i] = (char*) xmalloc (l + 1 + append_len);
+ memcpy (values[i], curval, l);
+ values[i][l] = 0;
+ if (append)
+ strcat (values[i], append);
+ curval = nextval + 1;
+ nextval = strchr (curval, ':');
+ if (nextval == NULL)
+ nextval = strchr (curval, '\0');
+ }
+ *pvalues = values;
+ return num;
+}
- pex = pex_init (0, "lto-wrapper", NULL);
- if (pex == NULL)
- fatal_perror ("pex_init failed");
+/* Append options OPTS from lto or offload_lto sections to ARGV_OBSTACK. */
- errmsg = pex_run (pex, PEX_LAST | PEX_SEARCH, argv[0], argv, NULL,
- NULL, &err);
- if (errmsg != NULL)
+static void
+append_compiler_options (obstack *argv_obstack, struct cl_decoded_option *opts,
+ unsigned int count)
+{
+ /* Append compiler driver arguments as far as they were merged. */
+ for (unsigned int j = 1; j < count; ++j)
{
- if (err != 0)
+ struct cl_decoded_option *option = &opts[j];
+
+ /* File options have been properly filtered by lto-opts.c. */
+ switch (option->opt_index)
{
- errno = err;
- fatal_perror (errmsg);
+ /* Drop arguments that we want to take from the link line. */
+ case OPT_flto_:
+ case OPT_flto:
+ case OPT_flto_partition_:
+ continue;
+
+ default:
+ break;
}
- else
- fatal (errmsg);
- }
- return pex;
-}
+ /* For now do what the original LTO option code was doing - pass
+ on any CL_TARGET flag and a few selected others. */
+ switch (option->opt_index)
+ {
+ case OPT_fPIC:
+ case OPT_fpic:
+ case OPT_fPIE:
+ case OPT_fpie:
+ case OPT_fcommon:
+ case OPT_fexceptions:
+ case OPT_fnon_call_exceptions:
+ case OPT_fgnu_tm:
+ case OPT_freg_struct_return:
+ case OPT_fpcc_struct_return:
+ case OPT_fshort_double:
+ case OPT_ffp_contract_:
+ case OPT_fmath_errno:
+ case OPT_fsigned_zeros:
+ case OPT_ftrapping_math:
+ case OPT_fwrapv:
+ case OPT_fopenmp:
+ case OPT_fopenacc:
+ case OPT_ftrapv:
+ case OPT_fstrict_overflow:
+ case OPT_foffload_abi_:
+ case OPT_O:
+ case OPT_Ofast:
+ case OPT_Og:
+ case OPT_Os:
+ break;
+
+ default:
+ if (!(cl_options[option->opt_index].flags & CL_TARGET))
+ continue;
+ }
+ /* Pass the option on. */
+ for (unsigned int i = 0; i < option->canonical_option_num_elements; ++i)
+ obstack_ptr_grow (argv_obstack, option->canonical_option[i]);
+ }
+}
-/* Wait for a process to finish, and exit if a nonzero status is found.
- PROG is the program name. PEX is the process we should wait for. */
+/* Append linker options OPTS to ARGV_OBSTACK. */
-static int
-collect_wait (const char *prog, struct pex_obj *pex)
+static void
+append_linker_options (obstack *argv_obstack, struct cl_decoded_option *opts,
+ unsigned int count)
{
- int status;
+ /* Append linker driver arguments. Compiler options from the linker
+ driver arguments will override / merge with those from the compiler. */
+ for (unsigned int j = 1; j < count; ++j)
+ {
+ struct cl_decoded_option *option = &opts[j];
+
+ /* Do not pass on frontend specific flags not suitable for lto. */
+ if (!(cl_options[option->opt_index].flags
+ & (CL_COMMON|CL_TARGET|CL_DRIVER|CL_LTO)))
+ continue;
+
+ switch (option->opt_index)
+ {
+ case OPT_o:
+ case OPT_flto_:
+ case OPT_flto:
+ /* We've handled these LTO options, do not pass them on. */
+ continue;
+
+ case OPT_freg_struct_return:
+ case OPT_fpcc_struct_return:
+ case OPT_fshort_double:
+ /* Ignore these, they are determined by the input files.
+ ??? We fail to diagnose a possible mismatch here. */
+ continue;
+
+ default:
+ break;
+ }
+
+ /* Pass the option on. */
+ for (unsigned int i = 0; i < option->canonical_option_num_elements; ++i)
+ obstack_ptr_grow (argv_obstack, option->canonical_option[i]);
+ }
+}
- if (!pex_get_status (pex, 1, &status))
- fatal_perror ("can't get program status");
- pex_free (pex);
+/* Extract options for TARGET offload compiler from OPTIONS and append
+ them to ARGV_OBSTACK. */
- if (status)
+static void
+append_offload_options (obstack *argv_obstack, const char *target,
+ struct cl_decoded_option *options,
+ unsigned int options_count)
+{
+ for (unsigned i = 0; i < options_count; i++)
{
- if (WIFSIGNALED (status))
+ const char *cur, *next, *opts;
+ char **argv;
+ unsigned argc;
+ struct cl_decoded_option *option = &options[i];
+
+ if (option->opt_index != OPT_foffload_)
+ continue;
+
+ /* If option argument starts with '-' then no target is specified. That
+ means offload options are specified for all targets, so we need to
+ append them. */
+ if (option->arg[0] == '-')
+ opts = option->arg;
+ else
{
- int sig = WTERMSIG (status);
- if (WCOREDUMP (status))
- fatal ("%s terminated with signal %d [%s], core dumped",
- prog, sig, strsignal (sig));
- else
- fatal ("%s terminated with signal %d [%s]",
- prog, sig, strsignal (sig));
+ opts = strchr (option->arg, '=');
+ if (!opts)
+ continue;
+
+ cur = option->arg;
+
+ while (cur < opts)
+ {
+ next = strchr (cur, ',');
+ if (next == NULL)
+ next = opts;
+ next = (next > opts) ? opts : next;
+
+ if (strlen (target) == (size_t) (next - cur)
+ && strncmp (target, cur, next - cur) == 0)
+ break;
+
+ cur = next + 1;
+ }
+
+ if (cur >= opts)
+ continue;
+
+ opts++;
}
- if (WIFEXITED (status))
- fatal ("%s returned %d exit status", prog, WEXITSTATUS (status));
+ argv = buildargv (opts);
+ for (argc = 0; argv[argc]; argc++)
+ obstack_ptr_grow (argv_obstack, argv[argc]);
}
+}
- return 0;
+/* Check whether NAME can be accessed in MODE. This is like access,
+ except that it never considers directories to be executable. */
+
+static int
+access_check (const char *name, int mode)
+{
+ if (mode == X_OK)
+ {
+ struct stat st;
+
+ if (stat (name, &st) < 0
+ || S_ISDIR (st.st_mode))
+ return -1;
+ }
+
+ return access (name, mode);
}
+/* Prepare a target image for offload TARGET, using mkoffload tool from
+ COMPILER_PATH. Return the name of the resultant object file. */
+
+static char *
+compile_offload_image (const char *target, const char *compiler_path,
+ unsigned in_argc, char *in_argv[],
+ struct cl_decoded_option *compiler_opts,
+ unsigned int compiler_opt_count,
+ struct cl_decoded_option *linker_opts,
+ unsigned int linker_opt_count)
+{
+ char *filename = NULL;
+ char **argv;
+ char *suffix
+ = XALLOCAVEC (char, sizeof ("/accel//mkoffload") + strlen (target));
+ strcpy (suffix, "/accel/");
+ strcat (suffix, target);
+ strcat (suffix, "/mkoffload");
+
+ char **paths = NULL;
+ unsigned n_paths = parse_env_var (compiler_path, &paths, suffix);
+
+ const char *compiler = NULL;
+ for (unsigned i = 0; i < n_paths; i++)
+ if (access_check (paths[i], X_OK) == 0)
+ {
+ compiler = paths[i];
+ break;
+ }
+
+ if (compiler)
+ {
+ /* Generate temporary output file name. */
+ filename = make_temp_file (".target.o");
+
+ struct obstack argv_obstack;
+ obstack_init (&argv_obstack);
+ obstack_ptr_grow (&argv_obstack, compiler);
+ obstack_ptr_grow (&argv_obstack, "-o");
+ obstack_ptr_grow (&argv_obstack, filename);
+
+ /* Append names of input object files. */
+ for (unsigned i = 0; i < in_argc; i++)
+ obstack_ptr_grow (&argv_obstack, in_argv[i]);
+
+ /* Append options from offload_lto sections. */
+ append_compiler_options (&argv_obstack, compiler_opts,
+ compiler_opt_count);
+
+ /* Append options specified by -foffload last. In case of conflicting
+ options we expect offload compiler to choose the latest. */
+ append_offload_options (&argv_obstack, target, compiler_opts,
+ compiler_opt_count);
+ append_offload_options (&argv_obstack, target, linker_opts,
+ linker_opt_count);
+
+ obstack_ptr_grow (&argv_obstack, NULL);
+ argv = XOBFINISH (&argv_obstack, char **);
+ fork_execute (argv[0], argv, true);
+ obstack_free (&argv_obstack, NULL);
+ }
+
+ free_array_of_ptrs ((void **) paths, n_paths);
+ return filename;
+}
-/* Unlink a temporary LTRANS file unless requested otherwise. */
+
+/* The main routine dealing with offloading.
+ The routine builds a target image for each offload target. IN_ARGC and
+ IN_ARGV specify options and input object files. As all of them could contain
+ target sections, we pass them all to target compilers. */
static void
-maybe_unlink_file (const char *file)
+compile_images_for_offload_targets (unsigned in_argc, char *in_argv[],
+ struct cl_decoded_option *compiler_opts,
+ unsigned int compiler_opt_count,
+ struct cl_decoded_option *linker_opts,
+ unsigned int linker_opt_count)
{
- if (! debug)
+ char **names = NULL;
+ const char *target_names = getenv (OFFLOAD_TARGET_NAMES_ENV);
+ if (!target_names)
+ return;
+ unsigned num_targets = parse_env_var (target_names, &names, NULL);
+
+ const char *compiler_path = getenv ("COMPILER_PATH");
+ if (!compiler_path)
+ goto out;
+
+ /* Prepare an image for each target and save the name of the resultant object
+ file to the OFFLOAD_NAMES array. It is terminated by a NULL entry. */
+ offload_names = XCNEWVEC (char *, num_targets + 1);
+ for (unsigned i = 0; i < num_targets; i++)
{
- if (unlink_if_ordinary (file))
- fatal_perror ("deleting LTRANS file %s", file);
+ offload_names[i]
+ = compile_offload_image (names[i], compiler_path, in_argc, in_argv,
+ compiler_opts, compiler_opt_count,
+ linker_opts, linker_opt_count);
+ if (!offload_names[i])
+ fatal_error (input_location,
+ "problem with building target image for %s\n", names[i]);
}
- else
- fprintf (stderr, "[Leaving LTRANS %s]\n", file);
-}
+ out:
+ free_array_of_ptrs ((void **) names, num_targets);
+}
-/* Execute program ARGV[0] with arguments ARGV. Wait for it to finish. */
+/* Copy a file from SRC to DEST. */
static void
-fork_execute (char **argv)
+copy_file (const char *dest, const char *src)
{
- struct pex_obj *pex;
- char *new_argv[3];
- char *at_args;
- FILE *args;
- int status;
+ FILE *d = fopen (dest, "wb");
+ FILE *s = fopen (src, "rb");
+ char buffer[512];
+ while (!feof (s))
+ {
+ size_t len = fread (buffer, 1, 512, s);
+ if (ferror (s) != 0)
+ fatal_error (input_location, "reading input file");
+ if (len > 0)
+ {
+ fwrite (buffer, 1, len, d);
+ if (ferror (d) != 0)
+ fatal_error (input_location, "writing output file");
+ }
+ }
+}
+
+/* Find the crtoffloadbegin.o and crtoffloadend.o files in LIBRARY_PATH, make
+ copies and store the names of the copies in offloadbegin and offloadend. */
- args_name = make_temp_file (".args");
- at_args = concat ("@", args_name, NULL);
- args = fopen (args_name, "w");
- if (args == NULL)
- fatal ("failed to open %s", args_name);
+static void
+find_offloadbeginend (void)
+{
+ char **paths = NULL;
+ const char *library_path = getenv ("LIBRARY_PATH");
+ if (!library_path)
+ return;
+ unsigned n_paths = parse_env_var (library_path, &paths, "/crtoffloadbegin.o");
- status = writeargv (&argv[1], args);
+ unsigned i;
+ for (i = 0; i < n_paths; i++)
+ if (access_check (paths[i], R_OK) == 0)
+ {
+ size_t len = strlen (paths[i]);
+ char *tmp = xstrdup (paths[i]);
+ strcpy (paths[i] + len - strlen ("begin.o"), "end.o");
+ if (access_check (paths[i], R_OK) != 0)
+ fatal_error (input_location,
+ "installation error, can't find crtoffloadend.o");
+ /* The linker will delete the filenames we give it, so make
+ copies. */
+ offloadbegin = make_temp_file (".o");
+ offloadend = make_temp_file (".o");
+ copy_file (offloadbegin, tmp);
+ copy_file (offloadend, paths[i]);
+ free (tmp);
+ break;
+ }
+ if (i == n_paths)
+ fatal_error (input_location,
+ "installation error, can't find crtoffloadbegin.o");
+
+ free_array_of_ptrs ((void **) paths, n_paths);
+}
- if (status)
- fatal ("could not write to temporary file %s", args_name);
+/* A subroutine of run_gcc. Examine the open file FD for lto sections with
+ name prefix PREFIX, at FILE_OFFSET, and store any options we find in OPTS
+ and OPT_COUNT. Return true if we found a matchingn section, false
+ otherwise. COLLECT_GCC holds the value of the environment variable with
+ the same name. */
- fclose (args);
+static bool
+find_and_merge_options (int fd, off_t file_offset, const char *prefix,
+ struct cl_decoded_option **opts,
+ unsigned int *opt_count, const char *collect_gcc)
+{
+ off_t offset, length;
+ char *data;
+ char *fopts;
+ const char *errmsg;
+ int err;
+ struct cl_decoded_option *fdecoded_options = *opts;
+ unsigned int fdecoded_options_count = *opt_count;
+
+ simple_object_read *sobj;
+ sobj = simple_object_start_read (fd, file_offset, "__GNU_LTO",
+ &errmsg, &err);
+ if (!sobj)
+ return false;
+
+ char *secname = XALLOCAVEC (char, strlen (prefix) + sizeof (".opts"));
+ strcpy (secname, prefix);
+ strcat (secname, ".opts");
+ if (!simple_object_find_section (sobj, secname, &offset, &length,
+ &errmsg, &err))
+ {
+ simple_object_release_read (sobj);
+ return false;
+ }
- new_argv[0] = argv[0];
- new_argv[1] = at_args;
- new_argv[2] = NULL;
+ lseek (fd, file_offset + offset, SEEK_SET);
+ data = (char *)xmalloc (length);
+ read (fd, data, length);
+ fopts = data;
+ do
+ {
+ struct cl_decoded_option *f2decoded_options;
+ unsigned int f2decoded_options_count;
+ get_options_from_collect_gcc_options (collect_gcc,
+ fopts, CL_LANG_ALL,
+ &f2decoded_options,
+ &f2decoded_options_count);
+ if (!fdecoded_options)
+ {
+ fdecoded_options = f2decoded_options;
+ fdecoded_options_count = f2decoded_options_count;
+ }
+ else
+ merge_and_complain (&fdecoded_options,
+ &fdecoded_options_count,
+ f2decoded_options, f2decoded_options_count);
- pex = collect_execute (new_argv);
- collect_wait (new_argv[0], pex);
+ fopts += strlen (fopts) + 1;
+ }
+ while (fopts - data < length);
- maybe_unlink_file (args_name);
- free (at_args);
+ free (data);
+ simple_object_release_read (sobj);
+ *opts = fdecoded_options;
+ *opt_count = fdecoded_options_count;
+ return true;
}
-
/* Execute gcc. ARGC is the number of arguments. ARGV contains the arguments. */
static void
run_gcc (unsigned argc, char *argv[])
{
- unsigned i;
- unsigned new_argc = argc;
+ unsigned i, j;
const char **new_argv;
const char **argv_ptr;
char *list_option_full = NULL;
+ const char *linker_output = NULL;
+ const char *collect_gcc, *collect_gcc_options;
+ int parallel = 0;
+ int jobserver = 0;
+ bool no_partition = false;
+ struct cl_decoded_option *fdecoded_options = NULL;
+ struct cl_decoded_option *offload_fdecoded_options = NULL;
+ unsigned int fdecoded_options_count = 0;
+ unsigned int offload_fdecoded_options_count = 0;
+ struct cl_decoded_option *decoded_options;
+ unsigned int decoded_options_count;
+ struct obstack argv_obstack;
+ int new_head_argc;
+ bool have_lto = false;
+ bool have_offload = false;
+ unsigned lto_argc = 0, offload_argc = 0;
+ char **lto_argv, **offload_argv;
+
+ /* Get the driver and options. */
+ collect_gcc = getenv ("COLLECT_GCC");
+ if (!collect_gcc)
+ fatal_error (input_location,
+ "environment variable COLLECT_GCC must be set");
+ collect_gcc_options = getenv ("COLLECT_GCC_OPTIONS");
+ if (!collect_gcc_options)
+ fatal_error (input_location,
+ "environment variable COLLECT_GCC_OPTIONS must be set");
+ get_options_from_collect_gcc_options (collect_gcc, collect_gcc_options,
+ CL_LANG_ALL,
+ &decoded_options,
+ &decoded_options_count);
+
+ /* Allocate arrays for input object files with LTO or offload IL,
+ and for possible preceding arguments. */
+ lto_argv = XNEWVEC (char *, argc);
+ offload_argv = XNEWVEC (char *, argc);
+
+ /* Look at saved options in the IL files. */
+ for (i = 1; i < argc; ++i)
+ {
+ char *p;
+ int fd;
+ off_t file_offset = 0;
+ long loffset;
+ int consumed;
+ char *filename = argv[i];
+
+ if ((p = strrchr (argv[i], '@'))
+ && p != argv[i]
+ && sscanf (p, "@%li%n", &loffset, &consumed) >= 1
+ && strlen (p) == (unsigned int) consumed)
+ {
+ filename = XNEWVEC (char, p - argv[i] + 1);
+ memcpy (filename, argv[i], p - argv[i]);
+ filename[p - argv[i]] = '\0';
+ file_offset = (off_t) loffset;
+ }
+ fd = open (filename, O_RDONLY | O_BINARY);
+ if (fd == -1)
+ {
+ lto_argv[lto_argc++] = argv[i];
+ continue;
+ }
- new_argc += 8;
- new_argv = (const char **) xcalloc (sizeof (char *), new_argc);
+ if (find_and_merge_options (fd, file_offset, LTO_SECTION_NAME_PREFIX,
+ &fdecoded_options, &fdecoded_options_count,
+ collect_gcc))
+ {
+ have_lto = true;
+ lto_argv[lto_argc++] = argv[i];
+ }
+
+ if (find_and_merge_options (fd, file_offset, OFFLOAD_SECTION_NAME_PREFIX,
+ &offload_fdecoded_options,
+ &offload_fdecoded_options_count, collect_gcc))
+ {
+ have_offload = true;
+ offload_argv[offload_argc++] = argv[i];
+ }
+
+ close (fd);
+ }
+
+ /* Initalize the common arguments for the driver. */
+ obstack_init (&argv_obstack);
+ obstack_ptr_grow (&argv_obstack, collect_gcc);
+ obstack_ptr_grow (&argv_obstack, "-xlto");
+ obstack_ptr_grow (&argv_obstack, "-c");
+
+ append_compiler_options (&argv_obstack, fdecoded_options,
+ fdecoded_options_count);
+ append_linker_options (&argv_obstack, decoded_options, decoded_options_count);
+
+ /* Scan linker driver arguments for things that are of relevance to us. */
+ for (j = 1; j < decoded_options_count; ++j)
+ {
+ struct cl_decoded_option *option = &decoded_options[j];
+ switch (option->opt_index)
+ {
+ case OPT_o:
+ linker_output = option->arg;
+ break;
+
+ case OPT_save_temps:
+ save_temps = 1;
+ break;
+
+ case OPT_v:
+ verbose = 1;
+ break;
+
+ case OPT_flto_partition_:
+ if (strcmp (option->arg, "none") == 0)
+ no_partition = true;
+ break;
+
+ case OPT_flto_:
+ if (strcmp (option->arg, "jobserver") == 0)
+ {
+ jobserver = 1;
+ parallel = 1;
+ }
+ else
+ {
+ parallel = atoi (option->arg);
+ if (parallel <= 1)
+ parallel = 0;
+ }
+ /* Fallthru. */
+
+ case OPT_flto:
+ lto_mode = LTO_MODE_WHOPR;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ if (no_partition)
+ {
+ lto_mode = LTO_MODE_LTO;
+ jobserver = 0;
+ parallel = 0;
+ }
- argv_ptr = new_argv;
+ if (linker_output)
+ {
+ char *output_dir, *base, *name;
+ bool bit_bucket = strcmp (linker_output, HOST_BIT_BUCKET) == 0;
+
+ output_dir = xstrdup (linker_output);
+ base = output_dir;
+ for (name = base; *name; name++)
+ if (IS_DIR_SEPARATOR (*name))
+ base = name + 1;
+ *base = '\0';
+
+ linker_output = &linker_output[base - output_dir];
+ if (*output_dir == '\0')
+ {
+ static char current_dir[] = { '.', DIR_SEPARATOR, '\0' };
+ output_dir = current_dir;
+ }
+ if (!bit_bucket)
+ {
+ obstack_ptr_grow (&argv_obstack, "-dumpdir");
+ obstack_ptr_grow (&argv_obstack, output_dir);
+ }
+
+ obstack_ptr_grow (&argv_obstack, "-dumpbase");
+ }
+
+ /* Remember at which point we can scrub args to re-use the commons. */
+ new_head_argc = obstack_object_size (&argv_obstack) / sizeof (void *);
+
+ if (have_offload)
+ {
+ compile_images_for_offload_targets (offload_argc, offload_argv,
+ offload_fdecoded_options,
+ offload_fdecoded_options_count,
+ decoded_options,
+ decoded_options_count);
+ if (offload_names)
+ {
+ find_offloadbeginend ();
+ for (i = 0; offload_names[i]; i++)
+ printf ("%s\n", offload_names[i]);
+ free_array_of_ptrs ((void **) offload_names, i);
+ }
+ }
+
+ if (offloadbegin)
+ printf ("%s\n", offloadbegin);
+
+ /* If object files contain offload sections, but do not contain LTO sections,
+ then there is no need to perform a link-time recompilation, i.e.
+ lto-wrapper is used only for a compilation of offload images. */
+ if (have_offload && !have_lto)
+ {
+ for (i = 1; i < argc; ++i)
+ if (strncmp (argv[i], "-fresolution=", sizeof ("-fresolution=") - 1))
+ {
+ char *out_file;
+ /* Can be ".o" or ".so". */
+ char *ext = strrchr (argv[i], '.');
+ if (ext == NULL)
+ out_file = make_temp_file ("");
+ else
+ out_file = make_temp_file (ext);
+ /* The linker will delete the files we give it, so make copies. */
+ copy_file (out_file, argv[i]);
+ printf ("%s\n", out_file);
+ }
+ goto finish;
+ }
- *argv_ptr++ = argv[0];
- *argv_ptr++ = "-combine";
- *argv_ptr++ = "-x";
- *argv_ptr++ = "lto";
- *argv_ptr++ = "-c";
if (lto_mode == LTO_MODE_LTO)
{
flto_out = make_temp_file (".lto.o");
- *argv_ptr++ = "-o";
- *argv_ptr++ = flto_out;
+ if (linker_output)
+ obstack_ptr_grow (&argv_obstack, linker_output);
+ obstack_ptr_grow (&argv_obstack, "-o");
+ obstack_ptr_grow (&argv_obstack, flto_out);
}
- else if (lto_mode == LTO_MODE_WHOPR)
+ else
{
const char *list_option = "-fltrans-output-list=";
size_t list_option_len = strlen (list_option);
char *tmp;
- ltrans_output_file = make_temp_file (".ltrans.out");
+ if (linker_output)
+ {
+ char *dumpbase = (char *) xmalloc (strlen (linker_output)
+ + sizeof (".wpa") + 1);
+ strcpy (dumpbase, linker_output);
+ strcat (dumpbase, ".wpa");
+ obstack_ptr_grow (&argv_obstack, dumpbase);
+ }
+
+ if (linker_output && save_temps)
+ {
+ ltrans_output_file = (char *) xmalloc (strlen (linker_output)
+ + sizeof (".ltrans.out") + 1);
+ strcpy (ltrans_output_file, linker_output);
+ strcat (ltrans_output_file, ".ltrans.out");
+ }
+ else
+ ltrans_output_file = make_temp_file (".ltrans.out");
list_option_full = (char *) xmalloc (sizeof (char) *
(strlen (ltrans_output_file) + list_option_len + 1));
tmp = list_option_full;
- *argv_ptr++ = tmp;
+ obstack_ptr_grow (&argv_obstack, tmp);
strcpy (tmp, list_option);
tmp += list_option_len;
strcpy (tmp, ltrans_output_file);
- *argv_ptr++ = "-fwpa";
- }
- else
- fatal ("invalid LTO mode");
-
- /* Add inherited GCC options to the LTO back end command line.
- Filter out some obviously inappropriate options that will
- conflict with the options that we force above. We pass
- all of the remaining options on to LTO, and let it complain
- about any it doesn't like. Note that we invoke LTO via the
- `gcc' driver, so the usual option processing takes place.
- Except for `-flto' and `-fwhopr', we should only filter options that
- are meaningful to `ld', lest an option go silently unclaimed. */
- for (i = 1; i < argc; i++)
- {
- const char *s = argv[i];
-
- if (strcmp (s, "-flto") == 0 || strcmp (s, "-fwhopr") == 0)
- /* We've handled this LTO option, don't pass it on. */
- ;
- else if (*s == '-' && s[1] == 'o')
+ if (jobserver)
+ obstack_ptr_grow (&argv_obstack, xstrdup ("-fwpa=jobserver"));
+ else if (parallel > 1)
{
- /* Drop `-o' and its filename argument. We will use a
- temporary file for the LTO output. The `-o' option
- will be interpreted by the linker. */
- if (s[2] == '\0')
- i++;
+ char buf[256];
+ sprintf (buf, "-fwpa=%i", parallel);
+ obstack_ptr_grow (&argv_obstack, xstrdup (buf));
}
else
- /* Pass the option or argument to LTO. */
- *argv_ptr++ = s;
+ obstack_ptr_grow (&argv_obstack, "-fwpa");
}
- *argv_ptr = NULL;
+ /* Append the input objects and possible preceding arguments. */
+ for (i = 0; i < lto_argc; ++i)
+ obstack_ptr_grow (&argv_obstack, lto_argv[i]);
+ obstack_ptr_grow (&argv_obstack, NULL);
- fork_execute (CONST_CAST (char **, new_argv));
- free (new_argv);
- new_argv = NULL;
+ new_argv = XOBFINISH (&argv_obstack, const char **);
+ argv_ptr = &new_argv[new_head_argc];
+ fork_execute (new_argv[0], CONST_CAST (char **, new_argv), true);
if (lto_mode == LTO_MODE_LTO)
{
- printf("%s\n", flto_out);
+ printf ("%s\n", flto_out);
free (flto_out);
flto_out = NULL;
}
- else if (lto_mode == LTO_MODE_WHOPR)
+ else
{
FILE *stream = fopen (ltrans_output_file, "r");
- int c;
+ FILE *mstream = NULL;
+ struct obstack env_obstack;
if (!stream)
- fatal_perror ("fopen: %s", ltrans_output_file);
+ fatal_error (input_location, "fopen: %s: %m", ltrans_output_file);
- while ((c = getc (stream)) != EOF)
- putc (c, stdout);
+ /* Parse the list of LTRANS inputs from the WPA stage. */
+ obstack_init (&env_obstack);
+ nr = 0;
+ for (;;)
+ {
+ const unsigned piece = 32;
+ char *output_name = NULL;
+ char *buf, *input_name = (char *)xmalloc (piece);
+ size_t len;
+
+ buf = input_name;
+cont:
+ if (!fgets (buf, piece, stream))
+ break;
+ len = strlen (input_name);
+ if (input_name[len - 1] != '\n')
+ {
+ input_name = (char *)xrealloc (input_name, len + piece);
+ buf = input_name + len;
+ goto cont;
+ }
+ input_name[len - 1] = '\0';
+
+ if (input_name[0] == '*')
+ output_name = &input_name[1];
+
+ nr++;
+ input_names = (char **)xrealloc (input_names, nr * sizeof (char *));
+ output_names = (char **)xrealloc (output_names, nr * sizeof (char *));
+ input_names[nr-1] = input_name;
+ output_names[nr-1] = output_name;
+ }
fclose (stream);
- maybe_unlink_file (ltrans_output_file);
- free (list_option_full);
- }
- else
- fatal ("invalid LTO mode");
-}
-
+ maybe_unlink (ltrans_output_file);
+ ltrans_output_file = NULL;
-/* Parse the command line. Copy any unused argument to GCC_ARGV. ARGC is the
- number of arguments. ARGV contains the arguments. */
+ if (parallel)
+ {
+ makefile = make_temp_file (".mk");
+ mstream = fopen (makefile, "w");
+ }
-static int
-process_args (int argc, char *argv[], char *gcc_argv[])
-{
- int i;
- int j = 0;
+ /* Execute the LTRANS stage for each input file (or prepare a
+ makefile to invoke this in parallel). */
+ for (i = 0; i < nr; ++i)
+ {
+ char *output_name;
+ char *input_name = input_names[i];
+ /* If it's a pass-through file do nothing. */
+ if (output_names[i])
+ continue;
+
+ /* Replace the .o suffix with a .ltrans.o suffix and write
+ the resulting name to the LTRANS output list. */
+ obstack_grow (&env_obstack, input_name, strlen (input_name) - 2);
+ obstack_grow (&env_obstack, ".ltrans.o", sizeof (".ltrans.o"));
+ output_name = XOBFINISH (&env_obstack, char *);
+
+ /* Adjust the dumpbase if the linker output file was seen. */
+ if (linker_output)
+ {
+ char *dumpbase
+ = (char *) xmalloc (strlen (linker_output)
+ + sizeof (DUMPBASE_SUFFIX) + 1);
+ snprintf (dumpbase,
+ strlen (linker_output) + sizeof (DUMPBASE_SUFFIX),
+ "%s.ltrans%u", linker_output, i);
+ argv_ptr[0] = dumpbase;
+ }
+
+ argv_ptr[1] = "-fltrans";
+ argv_ptr[2] = "-o";
+ argv_ptr[3] = output_name;
+ argv_ptr[4] = input_name;
+ argv_ptr[5] = NULL;
+ if (parallel)
+ {
+ fprintf (mstream, "%s:\n\t@%s ", output_name, new_argv[0]);
+ for (j = 1; new_argv[j] != NULL; ++j)
+ fprintf (mstream, " '%s'", new_argv[j]);
+ fprintf (mstream, "\n");
+ /* If we are not preserving the ltrans input files then
+ truncate them as soon as we have processed it. This
+ reduces temporary disk-space usage. */
+ if (! save_temps)
+ fprintf (mstream, "\t@-touch -r %s %s.tem > /dev/null 2>&1 "
+ "&& mv %s.tem %s\n",
+ input_name, input_name, input_name, input_name);
+ }
+ else
+ {
+ fork_execute (new_argv[0], CONST_CAST (char **, new_argv),
+ true);
+ maybe_unlink (input_name);
+ }
- for (i = 1; i < argc; i ++)
- {
- if (! strcmp (argv[i], "-debug"))
- debug = 1;
- else if (! strcmp (argv[i], "-flto"))
- lto_mode = LTO_MODE_LTO;
- else if (! strcmp (argv[i], "-fwhopr"))
- lto_mode = LTO_MODE_WHOPR;
- else
+ output_names[i] = output_name;
+ }
+ if (parallel)
+ {
+ struct pex_obj *pex;
+ char jobs[32];
+
+ fprintf (mstream, "all:");
+ for (i = 0; i < nr; ++i)
+ fprintf (mstream, " \\\n\t%s", output_names[i]);
+ fprintf (mstream, "\n");
+ fclose (mstream);
+ if (!jobserver)
+ {
+ /* Avoid passing --jobserver-fd= and similar flags
+ unless jobserver mode is explicitly enabled. */
+ putenv (xstrdup ("MAKEFLAGS="));
+ putenv (xstrdup ("MFLAGS="));
+ }
+ new_argv[0] = getenv ("MAKE");
+ if (!new_argv[0])
+ new_argv[0] = "make";
+ new_argv[1] = "-f";
+ new_argv[2] = makefile;
+ i = 3;
+ if (!jobserver)
+ {
+ snprintf (jobs, 31, "-j%d", parallel);
+ new_argv[i++] = jobs;
+ }
+ new_argv[i++] = "all";
+ new_argv[i++] = NULL;
+ pex = collect_execute (new_argv[0], CONST_CAST (char **, new_argv),
+ NULL, NULL, PEX_SEARCH, false);
+ do_wait (new_argv[0], pex);
+ maybe_unlink (makefile);
+ makefile = NULL;
+ for (i = 0; i < nr; ++i)
+ maybe_unlink (input_names[i]);
+ }
+ for (i = 0; i < nr; ++i)
{
- gcc_argv[j] = argv[i];
- j++;
+ fputs (output_names[i], stdout);
+ putc ('\n', stdout);
+ free (input_names[i]);
}
+ nr = 0;
+ free (output_names);
+ free (input_names);
+ free (list_option_full);
+ obstack_free (&env_obstack, NULL);
}
- return j;
+ finish:
+ if (offloadend)
+ printf ("%s\n", offloadend);
+
+ XDELETE (lto_argv);
+ XDELETE (offload_argv);
+ obstack_free (&argv_obstack, NULL);
}
int
main (int argc, char *argv[])
{
- char **gcc_argv;
- int gcc_argc;
+ const char *p;
+
+ gcc_obstack_init (&opts_obstack);
+
+ p = argv[0] + strlen (argv[0]);
+ while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
+ --p;
+ progname = p;
+
+ xmalloc_set_program_name (progname);
gcc_init_libintl ();
+ diagnostic_initialize (global_dc, 0);
+
+ if (atexit (lto_wrapper_cleanup) != 0)
+ fatal_error (input_location, "atexit failed");
+
+ if (signal (SIGINT, SIG_IGN) != SIG_IGN)
+ signal (SIGINT, fatal_signal);
+#ifdef SIGHUP
+ if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
+ signal (SIGHUP, fatal_signal);
+#endif
+ if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
+ signal (SIGTERM, fatal_signal);
+#ifdef SIGPIPE
+ if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
+ signal (SIGPIPE, fatal_signal);
+#endif
+#ifdef SIGCHLD
+ /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
+ receive the signal. A different setting is inheritable */
+ signal (SIGCHLD, SIG_DFL);
+#endif
+
/* We may be called with all the arguments stored in some file and
passed with @file. Expand them into argv before processing. */
expandargv (&argc, &argv);
- gcc_argv = (char **) xcalloc (sizeof (char *), argc);
- gcc_argc = process_args (argc, argv, gcc_argv);
- run_gcc (gcc_argc, gcc_argv);
- free (gcc_argv);
+
+ run_gcc (argc, argv);
return 0;
}
projects / gcc.git / blobdiff