From f7433e0366ab3ecaa989c2d3ac549449c13ec8cc Mon Sep 17 00:00:00 2001
From: Manuel Bentele
Date: Fri, 30 Oct 2020 12:44:16 +0100
Subject: [BUILD] do not ignore C flags that are passed to CMake

C flags which are set by the environment variable CFLAGS have been
ignored by CMake since the corresponding CMake variable CMAKE_C_FLAGS
was not extended with those passed flags, but have been overwritten by a
fixed set of flags. This patch fixes the overwrite of CMAKE_C_FLAGS and
extends its content with the C flags passed in the environment variable.
---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'CMakeLists.txt')

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6a9eda5..42f259c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -77,7 +77,7 @@ gen_build_type(${INCLUDE_BUILD_HEADER_TEMPLATE} ${INCLUDE_BUILD_HEADER_GENERATE}
 add_definitions(-D_FILE_OFFSET_BITS=64)
 
 # define global C flags for compilation
-set(CMAKE_C_FLAGS "-std=c11")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11")
 
 # enable all error warnings in Debug build configuration
 set(CMAKE_C_FLAGS_DEBUG "-Wall -Wextra -Wpedantic -Wconversion -Wformat -Wformat-security -Werror=format-security")
-- 
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