cmake: avoid configure failures if CFLAGS contains -Wstrict-prototypes

(From OE-Core rev: 0c89b010ce2e426f55ac7c6f94befef988913834)

Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/cmake/cmake.inc

@@ -14,6 +14,7 @@ CMAKE_MAJOR_VERSION = "${@'.'.join(d.getVar('PV', True).split('.')[0:2])}"
 SRC_URI = "https://cmake.org/files/v${CMAKE_MAJOR_VERSION}/cmake-${PV}.tar.gz \
            file://support-oe-qt4-tools-names.patch \
            file://qt4-fail-silent.patch \
+           file://avoid-gcc-warnings-with-Wstrict-prototypes.patch \
            "
 
 SRC_URI[md5sum] = "d6dd661380adacdb12f41b926ec99545"

meta/recipes-devtools/cmake/cmake/avoid-gcc-warnings-with-Wstrict-prototypes.patch

@@ -0,0 +1,42 @@
+From 4bc17345c01ea467099e28c7df30c23ace9e7811 Mon Sep 17 00:00:00 2001
+From: Andre McCurdy <armccurdy@gmail.com>
+Date: Fri, 14 Oct 2016 16:26:58 -0700
+Subject: [PATCH] CheckFunctionExists.c: avoid gcc warnings with
+ -Wstrict-prototypes
+
+Avoid warnings (and therefore build failures etc) if a user happens
+to add -Wstrict-prototypes to CFLAGS.
+
+ | $ gcc --version
+ | gcc (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
+ |
+ | $ gcc -Wstrict-prototypes -Werror -DCHECK_FUNCTION_EXISTS=pthread_create -o foo.o -c Modules/CheckFunctionExists.c
+ | Modules/CheckFunctionExists.c:7:3: error: function declaration isn't a prototype [-Werror=strict-prototypes]
+ |    CHECK_FUNCTION_EXISTS();
+ |    ^
+ | cc1: all warnings being treated as errors
+ |
+
+Upstream-Status: Pending
+
+Signed-off-by: Andre McCurdy <armccurdy@gmail.com>
+---
+ Modules/CheckFunctionExists.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/Modules/CheckFunctionExists.c b/Modules/CheckFunctionExists.c
+index 2304000..224e340 100644
+--- a/Modules/CheckFunctionExists.c
++++ b/Modules/CheckFunctionExists.c
+@@ -4,7 +4,7 @@
+ extern "C"
+ #endif
+   char
+-  CHECK_FUNCTION_EXISTS();
++  CHECK_FUNCTION_EXISTS(void);
+ #ifdef __CLASSIC_C__
+ int main()
+ {
+-- 
+1.9.1
+