diff options
Diffstat (limited to 'gcc/gcc.c')
| -rw-r--r-- | gcc/gcc.c | 71 |
1 files changed, 71 insertions, 0 deletions
@@ -325,6 +325,7 @@ static char *save_string PARAMS ((const char *, int)); static void set_collect_gcc_options PARAMS ((void)); static int do_spec_1 PARAMS ((const char *, int, const char *)); static int do_spec_2 PARAMS ((const char *)); +static void do_option_spec PARAMS ((const char *, const char *)); static void do_self_spec PARAMS ((const char *)); static const char *find_file PARAMS ((const char *)); static int is_directory PARAMS ((const char *, const char *, int)); @@ -804,6 +805,19 @@ static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS; static const char *const driver_self_specs[] = { DRIVER_SELF_SPECS }; +#ifndef OPTION_DEFAULT_SPECS +#define OPTION_DEFAULT_SPECS { "", "" } +#endif + +struct default_spec +{ + const char *name; + const char *spec; +}; + +static const struct default_spec + option_default_specs[] = { OPTION_DEFAULT_SPECS }; + struct user_specs { struct user_specs *next; @@ -4257,6 +4271,57 @@ do_spec_2 (spec) of the switches/n_switches array. */ static void +do_option_spec (name, spec) + const char *name; + const char *spec; +{ + unsigned int i, value_count, value_len; + const char *p, *q, *value; + char *tmp_spec, *tmp_spec_p; + + if (configure_default_options[0].name == NULL) + return; + + for (i = 0; i < ARRAY_SIZE (configure_default_options); i++) + if (strcmp (configure_default_options[i].name, name) == 0) + break; + if (i == ARRAY_SIZE (configure_default_options)) + return; + + value = configure_default_options[i].value; + value_len = strlen (value); + + /* Compute the size of the final spec. */ + value_count = 0; + p = spec; + while ((p = strstr (p, "%(VALUE)")) != NULL) + { + p ++; + value_count ++; + } + + /* Replace each %(VALUE) by the specified value. */ + tmp_spec = alloca (strlen (spec) + 1 + + value_count * (value_len - strlen ("%(VALUE)"))); + tmp_spec_p = tmp_spec; + q = spec; + while ((p = strstr (q, "%(VALUE)")) != NULL) + { + memcpy (tmp_spec_p, q, p - q); + tmp_spec_p = tmp_spec_p + (p - q); + memcpy (tmp_spec_p, value, value_len); + tmp_spec_p += value_len; + q = p + strlen ("%(VALUE)"); + } + strcpy (tmp_spec_p, q); + + do_self_spec (tmp_spec); +} + +/* Process the given spec string and add any new options to the end + of the switches/n_switches array. */ + +static void do_self_spec (spec) const char *spec; { @@ -6036,6 +6101,12 @@ main (argc, argv) if (access (specs_file, R_OK) == 0) read_specs (specs_file, TRUE); + /* Process any configure-time defaults specified for the command line + options, via OPTION_DEFAULT_SPECS. */ + for (i = 0; i < ARRAY_SIZE (option_default_specs); i++) + do_option_spec (option_default_specs[i].name, + option_default_specs[i].spec); + /* Process DRIVER_SELF_SPECS, adding any new options to the end of the command line. */ |