From 7a10e6439c8193c6fbe5f879eadf8902db797dc0 Mon Sep 17 00:00:00 2001
From: Guillaume Racicot <gufideg@gmail.com>
Date: Sat, 9 Nov 2019 12:19:49 -0500
Subject: [PATCH] Set C standard at 99 for all example targets

Closes #1593.

(cherry picked from commit 70a3104c4977fc4ea55efb12d4c565b2581edd5c)
---
 examples/CMakeLists.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/examples/CMakeLists.txt b/examples/CMakeLists.txt
index e0a9c2d6..b69761c3 100644
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -23,6 +23,18 @@ elseif (APPLE)
         MACOSX_PACKAGE_LOCATION "Resources")
 endif()
 
+if (${CMAKE_VERSION} VERSION_EQUAL "3.1.0" OR
+    ${CMAKE_VERSION} VERSION_GREATER "3.1.0")
+    set(CMAKE_C_STANDARD 99)
+else()
+    # Remove this fallback when removing support for CMake version less than 3.1
+    add_compile_options(
+                        "$<$<C_COMPILER_ID:AppleClang>:-std=c99>"
+                        "$<$<C_COMPILER_ID:Clang>:-std=c99>"
+                        "$<$<C_COMPILER_ID:GNU>:-std=c99>")
+
+endif()
+
 set(GLAD_GL "${GLFW_SOURCE_DIR}/deps/glad/gl.h"
             "${GLFW_SOURCE_DIR}/deps/glad_gl.c")
 set(GETOPT "${GLFW_SOURCE_DIR}/deps/getopt.h"