From e89d33fe93612a3e0024c5d2d3751c3f722de939 Mon Sep 17 00:00:00 2001
From: Peter Simons <simons@cryp.to>
Date: Tue, 21 Jul 2009 15:22:24 +0200
Subject: [PATCH] C++: wrap md2,md5,sha1,etc. function declarations in extern
 "C" scope

* lib/md2.h [__cplusplus]: Wrap declarations in extern "C" scope.
* lib/md4.h: Likewise.
* lib/md5.h: Likewise.
* lib/sha1.h: Likewise.
* lib/sha256.h: Likewise.
* lib/sha512.h: Likewise.
---
 ChangeLog    | 8 ++++++++
 lib/md2.h    | 8 ++++++++
 lib/md4.h    | 8 ++++++++
 lib/md5.h    | 8 ++++++++
 lib/sha1.h   | 8 ++++++++
 lib/sha256.h | 8 ++++++++
 lib/sha512.h | 8 ++++++++
 7 files changed, 56 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 718af87ed..cca4ce95c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,13 @@
 2009-07-22  Peter Simons  <simons@cryp.to>
 
+	C++: wrap md2,md5,sha1,etc. function declarations in extern "C" scope
+	* lib/md2.h [__cplusplus]: Wrap declarations in extern "C" scope.
+	* lib/md4.h: Likewise.
+	* lib/md5.h: Likewise.
+	* lib/sha1.h: Likewise.
+	* lib/sha256.h: Likewise.
+	* lib/sha512.h: Likewise.
+
 	tests-sha1: don't assign literal string to 'char *' variable
 	* tests/test-sha1.c (main): Declare locals with "const" to match
 	attributes of the right hand side.
diff --git a/lib/md2.h b/lib/md2.h
index 401604ef1..3535e29dd 100644
--- a/lib/md2.h
+++ b/lib/md2.h
@@ -22,6 +22,10 @@
 # include <stdio.h>
 # include <stddef.h>
 
+# ifdef __cplusplus
+extern "C" {
+# endif
+
 # define MD2_DIGEST_SIZE 16
 
 /* Structure to save state of computation between the single steps.  */
@@ -73,4 +77,8 @@ extern int md2_stream (FILE *stream, void *resblock);
    digest.  */
 extern void *md2_buffer (const char *buffer, size_t len, void *resblock);
 
+# ifdef __cplusplus
+}
+# endif
+
 #endif
diff --git a/lib/md4.h b/lib/md4.h
index 937794c3c..6b49da50e 100644
--- a/lib/md4.h
+++ b/lib/md4.h
@@ -22,6 +22,10 @@
 # include <stdio.h>
 # include <stdint.h>
 
+# ifdef __cplusplus
+extern "C" {
+# endif
+
 # define MD4_DIGEST_SIZE 16
 
 /* Structure to save state of computation between the single steps.  */
@@ -79,4 +83,8 @@ extern int md4_stream (FILE * stream, void *resblock);
    digest.  */
 extern void *md4_buffer (const char *buffer, size_t len, void *resblock);
 
+# ifdef __cplusplus
+}
+# endif
+
 #endif
diff --git a/lib/md5.h b/lib/md5.h
index 3ae657bb3..0769edbaf 100644
--- a/lib/md5.h
+++ b/lib/md5.h
@@ -54,6 +54,10 @@
 # define __md5_stream md5_stream
 #endif
 
+# ifdef __cplusplus
+extern "C" {
+# endif
+
 /* Structure to save state of computation between the single steps.  */
 struct md5_ctx
 {
@@ -115,4 +119,8 @@ extern int __md5_stream (FILE *stream, void *resblock) __THROW;
 extern void *__md5_buffer (const char *buffer, size_t len,
 			   void *resblock) __THROW;
 
+# ifdef __cplusplus
+}
+# endif
+
 #endif /* md5.h */
diff --git a/lib/sha1.h b/lib/sha1.h
index 4ffda7a99..93babd2ee 100644
--- a/lib/sha1.h
+++ b/lib/sha1.h
@@ -23,6 +23,10 @@
 # include <stdio.h>
 # include <stdint.h>
 
+# ifdef __cplusplus
+extern "C" {
+# endif
+
 #define SHA1_DIGEST_SIZE 20
 
 /* Structure to save state of computation between the single steps.  */
@@ -81,4 +85,8 @@ extern int sha1_stream (FILE *stream, void *resblock);
    digest.  */
 extern void *sha1_buffer (const char *buffer, size_t len, void *resblock);
 
+# ifdef __cplusplus
+}
+# endif
+
 #endif
diff --git a/lib/sha256.h b/lib/sha256.h
index a63b2015d..3dfcb264e 100644
--- a/lib/sha256.h
+++ b/lib/sha256.h
@@ -21,6 +21,10 @@
 # include <stdio.h>
 # include <stdint.h>
 
+# ifdef __cplusplus
+extern "C" {
+# endif
+
 /* Structure to save state of computation between the single steps.  */
 struct sha256_ctx
 {
@@ -80,4 +84,8 @@ extern int sha224_stream (FILE *stream, void *resblock);
 extern void *sha256_buffer (const char *buffer, size_t len, void *resblock);
 extern void *sha224_buffer (const char *buffer, size_t len, void *resblock);
 
+# ifdef __cplusplus
+}
+# endif
+
 #endif
diff --git a/lib/sha512.h b/lib/sha512.h
index ed12d545c..20bb09bed 100644
--- a/lib/sha512.h
+++ b/lib/sha512.h
@@ -22,6 +22,10 @@
 
 # include "u64.h"
 
+# ifdef __cplusplus
+extern "C" {
+# endif
+
 /* Structure to save state of computation between the single steps.  */
 struct sha512_ctx
 {
@@ -84,4 +88,8 @@ extern int sha384_stream (FILE *stream, void *resblock);
 extern void *sha512_buffer (const char *buffer, size_t len, void *resblock);
 extern void *sha384_buffer (const char *buffer, size_t len, void *resblock);
 
+# ifdef __cplusplus
+}
+# endif
+
 #endif
-- 
2.11.0