sha1dc: allow building with the external sha1dc library
[git/git.git] / sha1dc_git.h
index af3e951..a8c2729 100644 (file)
@@ -2,14 +2,22 @@
 
 #ifdef DC_SHA1_SUBMODULE
 #include "sha1collisiondetection/lib/sha1.h"
+#elif defined(DC_SHA1_EXTERNAL)
+#include <sha1dc/sha1.h>
 #else
 #include "sha1dc/sha1.h"
 #endif
 
+#ifdef DC_SHA1_EXTERNAL
+void git_SHA1DCInit(SHA1_CTX *);
+#else
+#define git_SHA1DCInit SHA1DCInit
+#endif
+
 void git_SHA1DCFinal(unsigned char [20], SHA1_CTX *);
 void git_SHA1DCUpdate(SHA1_CTX *ctx, const void *data, unsigned long len);
 
 #define platform_SHA_CTX SHA1_CTX
-#define platform_SHA1_Init SHA1DCInit
+#define platform_SHA1_Init git_SHA1DCInit
 #define platform_SHA1_Update git_SHA1DCUpdate
 #define platform_SHA1_Final git_SHA1DCFinal