From: Shuanglei Tao <tsl0922@gmail.com>
Date: Mon, 2 Jan 2017 16:14:57 +0000 (+0800)
Subject: cmake: fix c99 mode for old versions of cmake
X-Git-Url: http://git.prime8.dev/?a=commitdiff_plain;h=22e8b110339b0c50dbd38f6e97652c7f2254ab64;p=ttyd.git

cmake: fix c99 mode for old versions of cmake
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7f15337..71714fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,14 +1,17 @@
 cmake_minimum_required(VERSION 2.8)
 
-# enable C99 mode
+project(ttyd)
+
 if(CMAKE_VERSION VERSION_LESS "3.1")
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
+    if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
+    else()
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
+    endif()
 else()
-    set (CMAKE_C_STANDARD 99)
+    set(CMAKE_C_STANDARD 99)
 endif()
 
-project(ttyd)
-
 set(LIBWEBSOCKETS_MIN_VERSION 1.7.0)
 set(SOURCE_FILES src/server.c src/http.c src/protocol.c src/utils.c)