From 3f0d63b5a9487feb2b75f13b05c4930a668da08d Mon Sep 17 00:00:00 2001
From: Joel Johnson <mrjoel@lixil.net>
Date: Tue, 18 Feb 2020 13:56:26 -0700
Subject: [PATCH] Use internal CMake compiler version directly

---
 src/lib_json/CMakeLists.txt | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/src/lib_json/CMakeLists.txt b/src/lib_json/CMakeLists.txt
index caa9cc0..b330665 100644
--- a/src/lib_json/CMakeLists.txt
+++ b/src/lib_json/CMakeLists.txt
@@ -1,13 +1,6 @@
-if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-    #Get compiler version.
-    execute_process(COMMAND ${CMAKE_CXX_COMPILER} -dumpversion
-        OUTPUT_VARIABLE GNUCXX_VERSION
-    )
-
+if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 4.1.2)
     #-Werror=* was introduced -after- GCC 4.1.2
-    if(GNUCXX_VERSION VERSION_GREATER 4.1.2)
-        add_compile_options("-Werror=strict-aliasing")
-    endif()
+    add_compile_options("-Werror=strict-aliasing")
 endif()
 
 include(CheckIncludeFileCXX)