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git/arm/sha1.h
Nicolas Pitre 9126f0091f fix openssl headers conflicting with custom SHA1 implementations
On ARM I have the following compilation errors:

    CC fast-import.o
In file included from cache.h:8,
                 from builtin.h:6,
                 from fast-import.c:142:
arm/sha1.h:14: error: conflicting types for 'SHA_CTX'
/usr/include/openssl/sha.h:105: error: previous declaration of 'SHA_CTX' was here
arm/sha1.h:16: error: conflicting types for 'SHA1_Init'
/usr/include/openssl/sha.h:115: error: previous declaration of 'SHA1_Init' was here
arm/sha1.h:17: error: conflicting types for 'SHA1_Update'
/usr/include/openssl/sha.h:116: error: previous declaration of 'SHA1_Update' was here
arm/sha1.h:18: error: conflicting types for 'SHA1_Final'
/usr/include/openssl/sha.h:117: error: previous declaration of 'SHA1_Final' was here
make: *** [fast-import.o] Error 1

This is because openssl header files are always included in
git-compat-util.h since commit 684ec6c63c whenever NO_OPENSSL is not
set, which somehow brings in <openssl/sha1.h> clashing with the custom
ARM version.  Compilation of git is probably broken on PPC too for the
same reason.

Turns out that the only file requiring openssl/ssl.h and openssl/err.h
is imap-send.c.  But only moving those problematic includes there
doesn't solve the issue as it also includes cache.h which brings in the
conflicting local SHA1 header file.

As suggested by Jeff King, the best solution is to rename our references
to SHA1 functions and structure to something git specific, and define those
according to the implementation used.

Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
2008-10-02 18:06:56 -07:00

23 lines
565 B
C

/*
* SHA-1 implementation optimized for ARM
*
* Copyright: (C) 2005 by Nicolas Pitre <nico@cam.org>
* Created: September 17, 2005
*/
#include <stdint.h>
typedef struct {
uint64_t len;
uint32_t hash[5];
unsigned char buffer[64];
} arm_SHA_CTX;
void arm_SHA1_Init(arm_SHA_CTX *c);
void arm_SHA1_Update(arm_SHA_CTX *c, const void *p, unsigned long n);
void arm_SHA1_Final(unsigned char *hash, arm_SHA_CTX *c);
#define git_SHA_CTX arm_SHA_CTX
#define git_SHA1_Init arm_SHA1_Init
#define git_SHA1_Update arm_SHA1_Update
#define git_SHA1_Final arm_SHA1_Final