From 0e38a3706039607fb276228648f726ca9e15f6f0 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Wed, 31 Dec 2014 16:24:14 +0100
Subject: Feature test for va_copy

MSVC doesn't support va_copy.
---
 src/CMakeLists.txt | 2 ++
 src/buffer.c       | 1 +
 src/config.h.in    | 6 ++++++
 3 files changed, 9 insertions(+)

(limited to 'src')

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 87651bc..bb0c7c1 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -117,6 +117,7 @@ install(FILES cmark.h ${CMAKE_CURRENT_BINARY_DIR}/cmark_export.h
 # Feature tests
 include(CheckIncludeFile)
 include(CheckCSourceCompiles)
+include(CheckSymbolExists)
 CHECK_INCLUDE_FILE(stdbool.h HAVE_STDBOOL_H)
 CHECK_C_SOURCE_COMPILES(
   "int main() { __builtin_expect(0,0); return 0; }"
@@ -125,6 +126,7 @@ CHECK_C_SOURCE_COMPILES("
   int f(void) __attribute__ (());
   int main() { return 0; }
 " HAVE___ATTRIBUTE__)
+CHECK_SYMBOL_EXISTS(va_copy stdarg.h HAVE_VA_COPY)
 
 CONFIGURE_FILE(
   ${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
diff --git a/src/buffer.c b/src/buffer.c
index 15a6d05..87d817b 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5,6 +5,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#include "config.h"
 #include "cmark_ctype.h"
 #include "buffer.h"
 
diff --git a/src/config.h.in b/src/config.h.in
index 5294bc9..c1e9597 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -15,3 +15,9 @@
 #else
   #define CMARK_ATTRIBUTE(list)
 #endif
+
+#cmakedefine HAVE_VA_COPY
+
+#ifndef HAVE_VA_COPY
+  #define va_copy(dest, src) ((dest) = (src))
+#endif
-- 
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