more gcc compatibility flags

[r24101]

diff --git a/TODO b/TODO
index 1681588..c674838 100644 (file)
--- a/TODO
+++ b/TODO
@@ -36,3 +36,4 @@ Missing Warnings:
 
 main/driver:
 - delete output file if we had an error
+- go through gcc manual and emulate all the gcc flags...

diff --git a/main.c b/main.c
index 023d26f..d077fb6 100644 (file)
--- a/main.c
+++ b/main.c
@@ -269,6 +269,7 @@ static void add_flag(struct obstack *obst, const char *format, ...)
                case ')':
                case '<':
                case '>':
+               case '&':
                        obstack_1grow(obst, '\\');
                        /* FALLTHROUGH */
                default:
@@ -298,6 +299,9 @@ static FILE *preprocess(const char *fname)
        add_flag(&cppflags_obst, "-U__SIZE_TYPE__");
        add_flag(&cppflags_obst, "-D__SIZE_TYPE__=%s", type_to_string(type_size_t));
 
+       /* hack... */
+       add_flag(&cppflags_obst, "-D__builtin_memcpy=memcpy");
+
        /* handle dependency generation */
        if (dep_target[0] != '\0') {
                add_flag(&cppflags_obst, "-MF");
@@ -788,6 +792,20 @@ int main(int argc, char **argv)
                                GET_ARG_AFTER(opt, "-MT");
                                add_flag(&cppflags_obst, "-%s", option);
                                add_flag(&cppflags_obst, "%s", opt);
+                       } else if (streq(option, "include")) {
+                               const char *opt;
+                               GET_ARG_AFTER(opt, "-include");
+                               add_flag(&cppflags_obst, "-include");
+                               add_flag(&cppflags_obst, "%s", opt);
+                       } else if (streq(option, "isystem")) {
+                               const char *opt;
+                               GET_ARG_AFTER(opt, "-isystem");
+                               add_flag(&cppflags_obst, "-isystem");
+                               add_flag(&cppflags_obst, "%s", opt);
+                       } else if (streq(option, "nostdinc")
+                                       || streq(option, "trigraphs")) {
+                               /* pass these through to the preprocessor */
+                               add_flag(&cppflags_obst, "%s", arg);
                        } else if (streq(option, "pipe")) {
                                /* here for gcc compatibility */
                        } else if (option[0] == 'f') {
@@ -798,6 +816,8 @@ int main(int argc, char **argv)
                                    strstart(orig_opt, "align-jumps=") ||
                                    strstart(orig_opt, "align-functions=")) {
                                        fprintf(stderr, "ignoring gcc option '-f%s'\n", orig_opt);
+                               } else if (streq(orig_opt, "verbose-asm")) {
+                                       /* ignore: we always print verbose assembler */
                                } else {
                                        char const *opt         = orig_opt;
                                        bool        truth_value = true;
@@ -865,6 +885,9 @@ int main(int argc, char **argv)
                                        const char *opt;
                                        GET_ARG_AFTER(opt, "-Wl,");
                                        add_flag(&ldflags_obst, "-Wl,%s", opt);
+                               } else if (streq(option + 1, "no-trigraphs")
+                                                       || streq(option + 1, "undef")) {
+                                       add_flag(&cppflags_obst, "%s", arg);
                                } else {
                                        set_warning_opt(&option[1]);
                                }