From e5da500489437c21baad5d0d1436fa98a6c6f990 Mon Sep 17 00:00:00 2001
From: Danny Holman <dholman@gymli.org>
Date: Tue, 19 Nov 2024 14:40:34 -0600
Subject: build: add a function that enables compiler flags

Add a function that enables a specified compiler flag.

Signed-off-by: Danny Holman <dholman@gymli.org>
---
 CMake/EnableCFLAG.cmake | 12 ++++++++++++
 1 file changed, 12 insertions(+)
 create mode 100644 CMake/EnableCFLAG.cmake

diff --git a/CMake/EnableCFLAG.cmake b/CMake/EnableCFLAG.cmake
new file mode 100644
index 0000000..1a3df38
--- /dev/null
+++ b/CMake/EnableCFLAG.cmake
@@ -0,0 +1,12 @@
+include(CheckCCompilerFlag)
+
+function(enable_c_compiler_flag_if_supported flag)
+        string(FIND "${CMAKE_C_FLAGS}" "${flag}" flag_already_set)
+        if (flag_already_set EQUAL -1)
+                check_c_compiler_flag("${flag}" flag_supported)
+                if (flag_supported)
+                        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${flag}" PARENT_SCOPE)
+                endif ()
+                unset(flag_supported CACHE)
+        endif ()
+endfunction ()
-- 
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