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Add support for external spec file via the GCC_SPECS env var. This
allows us to easily control pie/ssp defaults with gcc-config profiles.
Original patch by Rob Holland. Extended to support multiple
entries separated by ':' by Kevin F. Quinn
--- gcc-4/gcc/gcc.c
+++ gcc-4/gcc/gcc.c
@@ -6482,6 +6482,32 @@
/* Process any user specified specs in the order given on the command
line. */
+#if !(defined (__MSDOS__) || defined (OS2) || defined (VMS) || defined (WIN32))
+ /* Add specs listed in GCC_SPECS. Note; in the process of separating
+ * each spec listed, the string is overwritten at token boundaries
+ * (':') with '\0', an effect of strtok_r().
+ */
+ GET_ENVIRONMENT (specs_file, "GCC_SPECS");
+ if (specs_file && (strlen(specs_file) > 0))
+ {
+ char *spec, *saveptr;
+ for (spec=strtok_r(specs_file,":",&saveptr);
+ spec!=NULL;
+ spec=strtok_r(NULL,":",&saveptr))
+ {
+ struct user_specs *user = (struct user_specs *)
+ xmalloc (sizeof (struct user_specs));
+
+ user->next = (struct user_specs *) 0;
+ user->filename = spec;
+ if (user_specs_tail)
+ user_specs_tail->next = user;
+ else
+ user_specs_head = user;
+ user_specs_tail = user;
+ }
+ }
+#endif
for (uptr = user_specs_head; uptr; uptr = uptr->next)
{
char *filename = find_a_file (&startfile_prefixes, uptr->filename,
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