minimal.diff

diff -urN ./gc-8.2.4/include/private/gcconfig.h /home/ahgamut/sources/gc-8.2.4/include/private/gcconfig.h
--- ./gc-8.2.4/include/private/gcconfig.h	2023-05-26 18:56:18.000000000 +0000
+++ ./gc-8.2.4/include/private/gcconfig.h	    2023-11-09 05:30:49.391450600 +0000
@@ -712,6 +712,18 @@
 #   define mach_type_known
 # endif
 
+#if defined(__COSMOPOLITAN__)
+#if defined(__x86_64__)
+#define mach_type_known
+#define X86_64
+#define LINUX // optional?
+#elif defined(__aarch64__)
+#define mach_type_known
+#define AARCH64
+#define LINUX // optional?
+#endif
+#endif
+
 /* Feel free to add more clauses here */
 
 /* Or manually define the machine type here.  A machine type is         */
diff -urN ./gc-8.2.4/os_dep.c /home/ahgamut/sources/gc-8.2.4/os_dep.c
--- ./gc-8.2.4/os_dep.c	2023-05-26 18:56:18.000000000 +0000
+++ ./gc-8.2.4/os_dep.c 2023-11-09 06:47:00.268139541 +0000
@@ -1088,7 +1088,7 @@
 
 #endif /* HPUX_STACK_BOTTOM */
 
-#ifdef LINUX_STACKBOTTOM
+#if 0 && defined(LINUX_STACKBOTTOM)
 
 # include <sys/types.h>
 # include <sys/stat.h>
@@ -1224,7 +1224,7 @@
   }
 #endif /* FREEBSD_STACKBOTTOM */
 
-#if defined(ECOS) || defined(NOSYS)
+#if 0 && (defined(ECOS) || defined(NOSYS))
   ptr_t GC_get_main_stack_base(void)
   {
     return STACKBOTTOM;
@@ -1268,18 +1268,18 @@
 #   endif
   }
 # define GET_MAIN_STACKBASE_SPECIAL
-#elif !defined(AMIGA) && !defined(HAIKU) && !defined(OS2) \
+#elif 0 && !defined(AMIGA) && !defined(HAIKU) && !defined(OS2) \
       && !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) \
       && !defined(GC_OPENBSD_THREADS) \
       && (!defined(GC_SOLARIS_THREADS) || defined(_STRICT_STDC))
 
-# if (defined(HAVE_PTHREAD_ATTR_GET_NP) || defined(HAVE_PTHREAD_GETATTR_NP)) \
+# if 0 && (defined(HAVE_PTHREAD_ATTR_GET_NP) || defined(HAVE_PTHREAD_GETATTR_NP)) \
      && (defined(THREADS) || defined(USE_GET_STACKBASE_FOR_MAIN))
 #   include <pthread.h>
 #   ifdef HAVE_PTHREAD_NP_H
 #     include <pthread_np.h> /* for pthread_attr_get_np() */
 #   endif
-# elif defined(DARWIN) && !defined(NO_PTHREAD_GET_STACKADDR_NP)
+# elif 0 && defined(DARWIN) && !defined(NO_PTHREAD_GET_STACKADDR_NP)
     /* We could use pthread_get_stackaddr_np even in case of a  */
     /* single-threaded gclib (there is no -lpthread on Darwin). */
 #   include <pthread.h>
@@ -1579,7 +1579,7 @@
 # endif /* !NEED_FIND_LIMIT */
 #endif /* !HAVE_GET_STACK_BASE */
 
-#ifndef GET_MAIN_STACKBASE_SPECIAL
+#if !defined(GET_MAIN_STACKBASE_SPECIAL)
   /* This is always called from the main thread.  Default implementation. */
   ptr_t GC_get_main_stack_base(void)
   {