I'm just trying to build a cmake project in debug-mode to enable asserts. I tried the following versions:
cmake -D CMAKE_BUILD_TYPE:STRING=Debug -L ../../
cmake -DCMAKE_BUILD_TYPE:STRING=Debug -L ../../
cmake -DCMAKE_BUILD_TYPE=Debug -L ../../
Unfortunately none of theese has the desired effect - that CMAKE_BUILD_TYPE
is set to Debug
(and therefore the NDEBUG
-flag is not passed to gcc).
Additionally I added variable_watch(CMAKE_BUILD_TYPE)
to my main CMakeLists.txt
to check whether the value get's overridden somewhere. But the first output is a READ_ACCESS
in my main
Additionally I added variable_watch(CMAKE_BUILD_TYPE)
to my main CMakeLists.txt
and the value there already is Release
.
Does someone have an idea why cmake ignores the configuration?
I'm using cmake version 2.8.7.
Ok, fgrep -R "CMAKE_BUILD_TYPE"
finally found the problem for me. In some CMakeLists.txt
-file I found something like that:
SET( CMAKE_BUILD_TYPE Release ... FORCE )
That overrides every user defined parameters (because of the FORCE
).
What works for me is that:
IF( NOT CMAKE_BUILD_TYPE )
SET( CMAKE_BUILD_TYPE Release ... FORCE )
ENDIF()
Thank's for your hints!
I assume that there is something wrong with your config..
I wrote a complete, simple example here: https://dl.dropboxusercontent.com/u/68798379/cmake-build-type.tar.bz2
cmake_minimum_required (VERSION 2.8)
project(playlib)
message("CMAKE_BUILD_TYPE = ${CMAKE_BUILD_TYPE}")
IF(CMAKE_BUILD_TYPE MATCHES Debug)
message("Debug build.")
ELSEIF(CMAKE_BUILD_TYPE MATCHES Release)
message("Release build.")
ELSE()
message("Some other build type.")
ENDIF()
add_library(TESTLIB SHARED src/test.c)
When you execute cmake with
cmake -DCMAKE_BUILD_TYPE=Debug ../../
It gives the following output:
$ ./gen-linux.sh
-- The C compiler identification is GNU 4.8.2
-- The CXX compiler identification is GNU 4.8.2
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
CMAKE_BUILD_TYPE = Debug
Debug build.
-- Configuring done
-- Generating done
-- Build files have been written to: /home/wojci/stack-overflow/cmake-build-type/build/linux
It shows that CMAKE_BUILD_TYPE is being set from the command line and it being recognized in the CMakeLists.txt config.
What happens when you run it on your system using your version of CMake?
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