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committed 1c8c0d91a43xxxxxxxxxx * kind, whether express or implied. */#define _GNU_SOURCE#include <stdio.h>#include <string.h>#include <limits.h>#include <unistd.h>#include <stdlib.h>#include <errno.h>#include <time.h>#ifdef BR_CCACHEstatic char ccache_path[PATH_MAX];#endifstatic char path[PATH_MAX];static char sysroot[PATH_MAX];static char source_time[sizeof("-D__TIME__=\"HH:MM:SS\"")];static char source_date[sizeof("-D__DATE__=\"MMM DD YYYY\"")];/** * GCC errors out with certain combinations of arguments (examples are * -mfloat-abi={hard|soft} and -m{little|big}-endian), so we have to ensure * that we only pass the predefined one to the real compiler if the inverse * option isn't in the argument list. * This specifies the worst case number of extra arguments we might pass * Currently, we have: * -mfloat-abi= * -march= * -mcpu= * -D__TIME__= * -D__DATE__= * -Wno-builtin-macro-redefined */#define EXCLUSIVE_ARGS 6#define EXCLUSIVE_ARGS 3static char *predef_args[] = {#ifdef BR_CCACHE ccache_path,#endif path, "--sysroot", sysroot,#ifdef BR_ABI "-mabi=" BR_ABI,#endif program_invocation_short_name, paranoid ? "ERROR" : "WARNING", arg, arg_has_path ? "" : "' '", /* close single-quote, space, open single-quote */ arg_has_path ? "" : path); /* so that arg and path are properly quoted. */ if (paranoid) exit(1); }}/* Read SOURCE_DATE_EPOCH from environment to have a deterministic * timestamp to replace embedded current dates to get reproducible * results. Returns -1 if SOURCE_DATE_EPOCH is not defined. */static time_t get_source_date_epoch(){ char *source_date_epoch; long long epoch; char *endptr; source_date_epoch = getenv("SOURCE_DATE_EPOCH"); if (!source_date_epoch) return (time_t) -1; errno = 0; epoch = strtoll(source_date_epoch, &endptr, 10); if ((errno == ERANGE && (epoch == LLONG_MAX || epoch == LLONG_MIN)) || (errno != 0 && epoch == 0)) { fprintf(stderr, "environment variable $SOURCE_DATE_EPOCH: " "strtoll: %s\n", strerror(errno)); exit(2); } if (endptr == source_date_epoch) { fprintf(stderr, "environment variable $SOURCE_DATE_EPOCH: " "no digits were found: %s\n", endptr); exit(2); } if (*endptr != '\0') { fprintf(stderr, "environment variable $SOURCE_DATE_EPOCH: " "trailing garbage: %s\n", endptr); exit(2); } if (epoch < 0) { fprintf(stderr, "environment variable $SOURCE_DATE_EPOCH: " "value must be nonnegative: %lld \n", epoch); exit(2); } return (time_t) epoch;}int main(int argc, char **argv){ char **args, **cur, **exec_args; char *relbasedir, *absbasedir; char *progpath = argv[0]; char *basename; char *env_debug; char *paranoid_wrapper; int paranoid; int ret, i, count = 0, debug; time_t source_date_epoch; /* Calculate the relative paths */ basename = strrchr(progpath, '/'); if (basename) { *basename = '\0'; basename++; relbasedir = malloc(strlen(progpath) + 7); if (relbasedir == NULL) { perror(__FILE__ ": malloc"); return 2; if (i == argc) {#ifdef BR_ARCH *cur++ = "-march=" BR_ARCH;#endif#ifdef BR_CPU *cur++ = "-mcpu=" BR_CPU;#endif }#endif /* ARCH || CPU */ source_date_epoch = get_source_date_epoch(); if (source_date_epoch != -1) { struct tm *tm = localtime(&source_date_epoch); if (!tm) { perror("__FILE__: localtime"); return 3; } ret = strftime(source_time, sizeof(source_time), "-D__TIME__=\"%T\"", tm); if (!ret) { perror("__FILE__: overflow"); return 3; } *cur++ = source_time; ret = strftime(source_date, sizeof(source_date), "-D__DATE__=\"%b %e %Y\"", tm); if (!ret) { perror("__FILE__: overflow"); return 3; } *cur++ = source_date; *cur++ = "-Wno-builtin-macro-redefined"; } paranoid_wrapper = getenv("BR_COMPILER_PARANOID_UNSAFE_PATH"); if (paranoid_wrapper && strlen(paranoid_wrapper) > 0) paranoid = 1; else paranoid = 0; /* Check for unsafe library and header paths */ for (i = 1; i < argc; i++) { const struct str_len_s *opt; for (opt=unsafe_opts; opt->str; opt++ ) {