tcc: early OSX native support

- build scripts
- working '-run' mode, e.g.:

./tcc -B. -I./include -I. -I.. -D_ANSI_SOURCE -run examples/ex1.c

Note: we don't bother parsing Mach-O/Fat images yet. We blindly
dlopen the image.

Signed-off-by: Andrei Warkentin <andrey.warkentin@gmail.com>

1 files changed, 17 insertions, 2 deletions

diff --git a/libtcc.c b/libtcc.c
index 99bf783..b4b2615 100644
--- a/libtcc.c
+++ b/libtcc.c
@@ -1081,7 +1081,19 @@ ST_FUNC int tcc_add_file_internal(TCCState *s1, const char *filename, int flags)
             break;
 #endif
         default:
-#ifdef TCC_TARGET_PE
+#if defined(TCC_TARGET_MACHO)
+            if (s1->output_type == TCC_OUTPUT_MEMORY) {
+                ret = 0;
+#ifdef TCC_IS_NATIVE
+                if (NULL == dlopen(filename, RTLD_GLOBAL | RTLD_LAZY)) {
+                    ret = -1;
+                }
+#endif /* TCC_TARGET_MACHO */
+            } else {
+                ret = tcc_load_dll(s1, fd, filename,
+                                   (flags & AFF_REFERENCED_DLL) != 0);
+            }
+#elif defined(TCC_TARGET_PE)
             ret = pe_load_file(s1, filename, fd);
 #else
             /* as GNU ld, consider it is an ld script if not recognized */
@@ -1143,7 +1155,10 @@ ST_FUNC int tcc_add_crt(TCCState *s, const char *filename)
 /* the library name is the same as the argument of the '-l' option */
 LIBTCCAPI int tcc_add_library(TCCState *s, const char *libraryname)
 {
-#ifdef TCC_TARGET_PE
+#if defined(TCC_TARGET_MACHO)
+    const char *libs[] = { "%s/lib%s.dylib", "%s/lib%s.a", NULL };
+    const char **pp = s->static_link ? libs + 1 : libs;
+#elif defined(TCC_TARGET_PE)
     const char *libs[] = { "%s/%s.def", "%s/lib%s.def", "%s/%s.dll", "%s/lib%s.dll", "%s/lib%s.a", NULL };
     const char **pp = s->static_link ? libs + 4 : libs;
 #else