From bf89f9103410036c6b09aba79330bb41ad300bcf Mon Sep 17 00:00:00 2001
From: Nate Eldredge <nate@thatsmathematics.com>
Date: Mon, 4 Aug 2014 21:00:55 -0600
Subject: [PATCH] CheckIncludeFiles: Use modern C declaration for 'main'
 (#15058)

Otherwise some compilers will incorrectly fail the checks when certain
warning/error flags are enabled.
---
 Modules/CheckIncludeFiles.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/CheckIncludeFiles.cmake b/Modules/CheckIncludeFiles.cmake
index eb4cf0dd2..f8378c0e0 100644
--- a/Modules/CheckIncludeFiles.cmake
+++ b/Modules/CheckIncludeFiles.cmake
@@ -53,7 +53,7 @@ macro(CHECK_INCLUDE_FILES INCLUDE VARIABLE)
         "${CMAKE_CONFIGURABLE_FILE_CONTENT}#include <${FILE}>\n")
     endforeach()
     set(CMAKE_CONFIGURABLE_FILE_CONTENT
-      "${CMAKE_CONFIGURABLE_FILE_CONTENT}\n\nint main(){return 0;}\n")
+      "${CMAKE_CONFIGURABLE_FILE_CONTENT}\n\nint main(void){return 0;}\n")
     configure_file("${CMAKE_ROOT}/Modules/CMakeConfigurableFile.in"
       "${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/CheckIncludeFiles.c" @ONLY)