The following issue has been SUBMITTED. ====================================================================== http://www.cmake.org/Bug/view.php?id=13008 ====================================================================== Reported By: David Coles Assigned To: ====================================================================== Project: CMake Issue ID: 13008 Category: CMake Reproducibility: always Severity: minor Priority: normal Status: new ====================================================================== Date Submitted: 2012-03-01 21:27 EST Last Modified: 2012-03-01 21:27 EST ====================================================================== Summary: CFLAGs set in toolchain file are overwritten Description: It's possible to set common CMAKE variables in a toolchain file with the assumption that they'll be used in external builds. This would be the ideal location for toolchain specific compiler flags, but unfortunately these are overwritten after the toolchain testing is complete.
A workaround[1] is to set the CFLAGS to the CMAKE Cache using something like `SET(CMAKE_C_FLAGS "-Wall" CACHE STRING "Toolchain")` but this breaks the use of CFLAGS environment variable. [1] http://www.mail-archive.com/cmake@cmake.org/msg40214.html Steps to Reproduce: # Toolchain.cmake # =============== set(CMAKE_SYSTEM_NAME Linux) set(CMAKE_SYSTEM_VERSION 1) set( CLANG True ) # Set the cross compiler set(CMAKE_C_COMPILER clang) set(CMAKE_CXX_COMPILER clang++) set(CMAKE_C_FLAGS "-Wextra") #set(CMAKE_C_FLAGS "-Wextra" CACHE STRING "Toolchain") set(MY_C_FLAGS "-Wextra") MESSAGE(STATUS "Toolchain CMAKE_C_FLAGS: ${CMAKE_C_FLAGS}") MESSAGE(STATUS "Toolchain MY_C_FLAGS: ${MY_C_FLAGS}") # CMakeLists.txt # ============== PROJECT (Test) CMAKE_MINIMUM_REQUIRED (VERSION 2.8) # Expect that toolchain variables are still set MESSAGE (STATUS "CMAKE_C_FLAGS: ${CMAKE_C_FLAGS}") MESSAGE (STATUS "MY_C_FLAGS: ${MY_C_FLAGS}") # Command Line # ============ $ rm CMakeCache.txt; cmake -DCMAKE_TOOLCHAIN_FILE=Toolchain.cmake . ====================================================================== Issue History Date Modified Username Field Change ====================================================================== 2012-03-01 21:27 David Coles New Issue ====================================================================== -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://public.kitware.com/cgi-bin/mailman/listinfo/cmake-developers
