From 23f073625d4e4457ac4e7e144a552aad5c4f1f63 Mon Sep 17 00:00:00 2001 From: Gael Guennebaud Date: Wed, 6 May 2009 08:15:54 +0000 Subject: [PATCH] add -Wextra only if compiler supports it --- CMakeLists.txt | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/CMakeLists.txt b/CMakeLists.txt index 3b430a7aa..ffbf23d85 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -17,6 +17,8 @@ endif(EIGEN_SVN_REVISION) cmake_minimum_required(VERSION 2.6.2) +include(CheckCXXCompilerFlag) + set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake) option(EIGEN_BUILD_TESTS "Build tests" OFF) @@ -34,7 +36,13 @@ set(CMAKE_INCLUDE_CURRENT_DIR ON) if(CMAKE_COMPILER_IS_GNUCXX) if(CMAKE_SYSTEM_NAME MATCHES Linux) - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -Wextra -fno-exceptions -fno-check-new -fno-common -fstrict-aliasing") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wnon-virtual-dtor -Wno-long-long -ansi -Wundef -Wcast-align -Wchar-subscripts -Wall -W -Wpointer-arith -Wwrite-strings -Wformat-security -fno-exceptions -fno-check-new -fno-common -fstrict-aliasing") + + check_cxx_compiler_flag("-Wextra" COMPILER_SUPPORT_WEXTRA) + if(COMPILER_SUPPORT_WEXTRA) + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra") + endif() + if(NOT EIGEN_TEST_LIB) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pedantic") endif(NOT EIGEN_TEST_LIB)