From ca921e5a53fdd3412f5f81e3a739f54d68cb63a7 Mon Sep 17 00:00:00 2001
From: Ahmad Fatoum <ahmad@a3f.at>
Date: Mon, 27 Nov 2017 01:24:08 +0100
Subject: CMake: Explicitly ask for C99 support

Otherwise using a compiler that defaults to -std=c89 or -std=gnu89 will
fail. Example:
http://www.cpantesters.org/cpan/report/abb85066-d283-11e7-9926-b2f4efb9c382

Apparently, -m32 Travis CI build was broken: -m32 was overridden by
-std=gnu99.  This fixes that.
---
 CMakeLists.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0dfa0857..057481bd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,6 +4,14 @@ cmake_minimum_required(VERSION 3.0)
 set(BUILD_EXAMPLES ON CACHE BOOL "Build the examples.")
 set(BUILD_GAMES ON CACHE BOOL "Build the example games.")
 
+if(CMAKE_VERSION VERSION_LESS "3.1")
+  if(CMAKE_C_COMPILER_ID STREQUAL "GNU")
+    set(CMAKE_C_FLAGS "-std=gnu99 ${CMAKE_C_FLAGS}")
+  endif()
+else()
+  set (CMAKE_C_STANDARD 99)
+endif()
+
 add_subdirectory(src release)
 
 if (${BUILD_EXAMPLES})
-- 
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