static FILE *preprocess(const char *fname, filetype_t filetype)
{
- obstack_1grow(&cppflags_obst, '\0');
- const char *flags = obstack_finish(&cppflags_obst);
+ static const char *common_flags = NULL;
+
+ if (common_flags == NULL) {
+ obstack_1grow(&cppflags_obst, '\0');
+ const char *flags = obstack_finish(&cppflags_obst);
+
+ /* setup default defines */
+ add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
+ add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
+ add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
+ add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
+
+ add_flag(&cppflags_obst, "-U__VERSION__");
+ add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
+
+ /* TODO hack... */
+ add_flag(&cppflags_obst, "-D__builtin_abort=abort");
+ add_flag(&cppflags_obst, "-D__builtin_abs=abs");
+ add_flag(&cppflags_obst, "-D__builtin_exit=exit");
+ add_flag(&cppflags_obst, "-D__builtin_malloc=malloc");
+ add_flag(&cppflags_obst, "-D__builtin_memcmp=memcmp");
+ add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
+ add_flag(&cppflags_obst, "-D__builtin_memset=memset");
+ add_flag(&cppflags_obst, "-D__builtin_strlen=strlen");
+ add_flag(&cppflags_obst, "-D__builtin_strcmp=strcmp");
+ add_flag(&cppflags_obst, "-D__builtin_strcpy=strcpy");
+
+ if (flags[0] != '\0') {
+ size_t len = strlen(flags);
+ obstack_1grow(&cppflags_obst, ' ');
+ obstack_grow(&cppflags_obst, flags, len);
+ }
+ common_flags = obstack_finish(&cppflags_obst);
+ }
+ assert(obstack_object_size(&cppflags_obst) == 0);
obstack_printf(&cppflags_obst, "%s", PREPROCESSOR);
if (filetype == FILETYPE_C) {
add_flag(&cppflags_obst, "-std=c99");
add_flag(&cppflags_obst, "-std=c++98");
}
- /* setup default defines */
- add_flag(&cppflags_obst, "-U__WCHAR_TYPE__");
- add_flag(&cppflags_obst, "-D__WCHAR_TYPE__=%s", type_to_string(type_wchar_t));
- add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
- add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
-
- add_flag(&cppflags_obst, "-U__VERSION__");
- add_flag(&cppflags_obst, "-D__VERSION__=\"%s\"", cparser_REVISION);
-
- /* TODO hack... */
- add_flag(&cppflags_obst, "-D__builtin_abort=abort");
- add_flag(&cppflags_obst, "-D__builtin_abs=abs");
- add_flag(&cppflags_obst, "-D__builtin_exit=exit");
- add_flag(&cppflags_obst, "-D__builtin_malloc=malloc");
- add_flag(&cppflags_obst, "-D__builtin_memcmp=memcmp");
- add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
- add_flag(&cppflags_obst, "-D__builtin_memset=memset");
- add_flag(&cppflags_obst, "-D__builtin_strlen=strlen");
- add_flag(&cppflags_obst, "-D__builtin_strcmp=strcmp");
- add_flag(&cppflags_obst, "-D__builtin_strcpy=strcpy");
+ obstack_printf(&cppflags_obst, "%s", common_flags);
/* handle dependency generation */
if (dep_target[0] != '\0') {
add_flag(&cppflags_obst, outname);
}
}
- if (flags[0] != '\0') {
- size_t len = strlen(flags);
- obstack_1grow(&cppflags_obst, ' ');
- obstack_grow(&cppflags_obst, flags, len);
- }
add_flag(&cppflags_obst, fname);
obstack_1grow(&cppflags_obst, '\0');