Added types support to blocks runtime, tidied up UNIX98 stuff.

GNUmakefile

@@ -53,7 +53,7 @@ libobjc_HEADER_FILES = \
 
 # Deprecated functions are only deprecated for external use, not for us because
 # we are special, precious, little flowers.
-libobjc_CPPFLAGS += -D__OBJC_RUNTIME_INTERNAL__=1
+libobjc_CPPFLAGS += -D__OBJC_RUNTIME_INTERNAL__=1 -D_XOPEN_VERSION=500
 # Note to Riccardo.  Please do not 'fix' C99isms in this.  The new ABI is only
 # useful on compilers that support C99 (currently only clang), so there is no
 # benefit from supporting platforms with no C99 compiler.

blocks_runtime.m

@@ -30,9 +30,6 @@
 #include <string.h>
 #include <limits.h>
 
-// FIXME: Before we finalise the ABI for blocks, I wish to modify clang to emit
-// type information for the block function.
-
 /* Makes the compiler happy even without Foundation */
 @interface Dummy
 - (id)retain;
@@ -194,6 +191,7 @@ struct StackBlockClass {
       void (*copy_helper)(void *dst, void *src);
       void (*dispose_helper)(void *src); 
     } *descriptor;
+	const char *types;
 };
 
 

lock.h

@@ -13,8 +13,6 @@ typedef HANDLE mutex_t;
 #	define DESTROY_LOCK(x) CloseHandle(*x)
 #else
 
-#define _XOPEN 500
-#define __USE_UNIX98 1
 #	include <pthread.h>
 
 typedef pthread_mutex_t mutex_t;