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Second try at getting elfNAME macros right.

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Under ANSI C, "32_" is not a valid pp-token...
This commit is contained in:
Ken Raeburn 1993-06-15 23:29:48 +00:00
parent bf16876816
commit 638616cafb
1 changed files with 17 additions and 6 deletions
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23
bfd/libelf.h
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@ -25,18 +25,29 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "elf/internal.h"
#include "elf/external.h"
/* This CAT4 hack is to avoid a problem with some strict ANSI C preprocessors.
The problem is, "32_" is not a valid preprocessing token, and we don't
want extra underscores (e.g., "elf_32_"). The XCAT2 macro will cause the
inner CAT macros to be evaluated first, producing still-valid pp-tokens.
Then the final concatenation can be done. (Sigh.) */
#ifdef __STDC__
#define XCAT2(a,b) CAT(a,b)
#define CAT4(a,b,c,d) XCAT2(CAT(a,b),CAT(c,d))
#else
#define CAT4(a,b,c,d) a/**/b/**/c/**/d
#endif
#ifndef NAME
#if ARCH_SIZE==64
#define NAME(x,y) CAT3(x,64_,y)
#define ElfNAME(X) CAT(Elf64_,X)
#define elfNAME(X) CAT(elf64_,X)
#define NAME(x,y) CAT4(x,64,_,y)
#else /* ARCH_SIZE==32 */
#define NAME(x,y) CAT3(x,32_,y)
#define ElfNAME(X) CAT(Elf32_,X)
#define elfNAME(X) CAT(elf32_,X)
#define NAME(x,y) CAT4(x,32,_,y)
#endif
#endif
#define ElfNAME(X) NAME(Elf,X)
#define elfNAME(X) NAME(elf,X)
typedef struct
{
asymbol symbol;