------- Comment #11 from bechir dot zalila at gmail dot com 2007-12-03 14:00 ------- After a lot of investigation, I succeeded to isolate the problem. The added -mmacosx-min-version is not done when processing the CC1_SPEC: It is done in the main function in gcc.c using the GCC_DRIVER_HOST_INITIALIZATION macro.
In gcc.c (function main): #ifdef GCC_DRIVER_HOST_INITIALIZATION /* Perform host dependent initialization when needed. */ GCC_DRIVER_HOST_INITIALIZATION; #endif For the darwin (ppc + x86): in config/darwin.g: extern void darwin_default_min_version (int * argc, char *** argv); #define GCC_DRIVER_HOST_INITIALIZATION \ darwin_default_min_version (&argc, &argv) #endif /* CROSS_DIRECTORY_STRUCTURE */ And finally the darwin_default_min_version function defined in config/darwin-driver.c. This function inserts -mmacosx-version-min *at the beginning* of argv, just after the command name (argv[1]) I Attached a patchfile (gcc_ada.diff) for the GNAT frontend that solves the problem -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34289
