static const char *
darwin_default_min_version (void)
{
/* Try to retrieve the deployment target from the environment. */
const char *new_flag = getenv ("MACOSX_DEPLOYMENT_TARGET");
/* Apparently, an empty string for MACOSX_DEPLOYMENT_TARGET means
"use the default". Or, possibly "use 10.1". We choose
to ignore the environment variable, as if it was never set. */
if (new_flag == NULL || new_flag[0] == 0)
#ifndef CROSS_DIRECTORY_STRUCTURE
/* Try to find the version from the kernel, if we fail - we print a
message and give up. */
new_flag = darwin_find_version_from_kernel ();
#else
/* For cross-compilers, default to a minimum version determined by
the configuration. */
new_flag = DEF_MIN_OSX_VERSION;
#endif /* CROSS_DIRECTORY_STRUCTURE */
if (new_flag != NULL)
{
size_t len = strlen (new_flag);
if (len > 128) { /* Arbitrary limit, number should be like xx.yy.zz */
warning (0, "couldn%'t understand version %s\n", new_flag);
return NULL;
}
new_flag = xstrndup (new_flag, len);
}
return new_flag;
}
*decoded_options = XNEWVEC (struct cl_decoded_option,
*decoded_options_count);
(*decoded_options)[0] = argv[0];
generate_option (OPT_mmacosx_version_min_, macosx_deployment_target,
1, CL_DRIVER, &(*decoded_options)[1]);
memcpy (*decoded_options + 2, argv + 1,
(argc - 1) * sizeof (struct cl_decoded_option));
return;
}
}
#ifndef CROSS_DIRECTORY_STRUCTURE
/* Try to find the version from the kernel, if we fail - we print a message
and give up. */
new_flag = darwin_find_version_from_kernel ();
if (!new_flag)
return;
#else
/* For cross-compilers, default to the target OS version. */
new_flag = DEF_MIN_OSX_VERSION;
#endif /* CROSS_DIRECTORY_STRUCTURE */
/* Add the new flag. */
++*decoded_options_count;
*decoded_options = XNEWVEC (struct cl_decoded_option,
*decoded_options_count);
(*decoded_options)[0] = argv[0];
