From a0b80ca775e9ad4b840293f959d933e94d120fb8 Mon Sep 17 00:00:00 2001 From: "Lubomir I. Ivanov" Date: Sat, 28 Apr 2018 22:28:22 +0300 Subject: cmake: add the GCC_OPTIMIZATION_FLAGS variable Instead of always adding -O2 for CMAKE_C_FLAGS_DEBUG and CMAKE_CXX_FLAGS_DEBUG allow the user to pass a custom value via GCC_OPTIMIZATION_FLAGS. Passing -DGCC_OPTIMIZATION_FLAGS:STRING=-O0 would disable all optimizations. Suggested-by: Robert C. Helling Signed-off-by: Lubomir I. Ivanov --- CMakeLists.txt | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'CMakeLists.txt') diff --git a/CMakeLists.txt b/CMakeLists.txt index f3b6c991d..d540f1187 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -105,9 +105,11 @@ endif() set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall") set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall") -# optimize -O2 even for debug builds -set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O2") -set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O2") +# by detault optimize with -O2 even for debug builds +set (GCC_OPTIMIZATION_FLAGS "-O2" CACHE STRING "GCC optimization flags") +message (STATUS "GCC optimization flags: " ${GCC_OPTIMIZATION_FLAGS}) +set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${GCC_OPTIMIZATION_FLAGS}") +set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${GCC_OPTIMIZATION_FLAGS}") # pkgconfig for required libraries find_package(PkgConfig) -- cgit v1.2.3-70-g09d2