[PATCH] make -m32/-m64 more useful

[Luc Van Oostenryck <luc.vanoostenryck@gmail.com>]

The option -m64 to just set the size of longs & pointers to 64 bits.

This patch makes this option much more effective by:
- adding define for LONG_MAX & SIZEOF_POINTER
- define __LP64__
- let the dual option, -m32, do the same as -m64 but for 32 bit
---
 lib.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lib.c b/lib.c
index d5b56b01..e5b0bb63 100644
--- a/lib.c
+++ b/lib.c
@@ -402,9 +402,21 @@ static void handle_arch_m64_finalize(void)
 		pointer_alignment = 8;
 		size_t_ctype = &ulong_ctype;
 		ssize_t_ctype = &long_ctype;
+		add_pre_buffer("#weak_define __LONG_MAX__ 0x7fffffffffffffff\n");
+		add_pre_buffer("#weak_define __SIZEOF_POINTER__ 8\n");
+		add_pre_buffer("#weak_define __LP64__ 1\n");
 #ifdef __x86_64__
 		add_pre_buffer("#weak_define __x86_64__ 1\n");
 #endif
+	} else {
+		bits_in_long = 32;
+		max_int_alignment = 4;
+		bits_in_pointer = 32;
+		pointer_alignment = 4;
+		size_t_ctype = &ulong_ctype;
+		ssize_t_ctype = &long_ctype;
+		add_pre_buffer("#weak_define __LONG_MAX__ 0x7fffffff\n");
+		add_pre_buffer("#weak_define __SIZEOF_POINTER__ 4\n");
 	}
 }
 
-- 
2.10.2