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include: Allow for our md5.h to defer to the system header

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This came up in the context of libsanitizer, where platform-specific
support for FreeBSD relies on aspects provided by FreeBSD's own md5.h.

Address this by allowing GCC's md5.h to pull in the system header
instead, controlled by a new macro USE_SYSTEM_MD5.

2021-11-05  Gerald Pfeifer  <gerald@pfeifer.com>
	    Jakub Jelinek  <jakub@redhat.com>

include/
	* md5.h (USE_SYSTEM_MD5): Introduce.
This commit is contained in:
Gerald Pfeifer 2021-11-05 12:56:07 +01:00
parent 84cbbb0a16
commit 44d9d55c6d
1 changed files with 6 additions and 0 deletions
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6
include/md5.h
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@ -21,6 +21,10 @@
#ifndef _MD5_H
#define _MD5_H 1
#ifdef USE_SYSTEM_MD5
#include_next <md5.h>
#else
#include <stdio.h>
#if defined HAVE_LIMITS_H || _LIBC
@ -151,4 +155,6 @@ extern void *md5_buffer (const char *buffer, size_t len, void *resblock);
}
#endif
#endif // USE_SYSTEM_MD5
#endif