[SOLVED] How do I set GLIBCXX_FORCE_NEW=1 in cmake for DEBUG builds only?

Issue

I need to set the environment variable GLIBCXX_FORCE_NEW=1 for DEBUG builds only, in cmake.

In the cmake documentation, I could only find:

• CMAKE_CXX_COMPILER

• CMAKE_CXX_FLAGS

• CMAKE_CXX_FLAGS_DEBUG

• CMAKE_CXX_FLAGS_RELEASE

• CMAKE_CXX_FLAGS_RELWITHDEBINFO

Solution

The environment variable GLIBCXX_FORCE_NEW only affects the behavior of a compiled program at runtime (see the gcc documentation). Adding it as a preprocessor define during compile time of a program (e.g., by setting the CMAKE_CXX_FLAGS) will not have an effect.

With CMake you can set an environment variable that affects the runtime of a built target only for CMake tests. The following commands add a test valid for DEBUG builds, which will run an executable with the GLIBCXX_FORCE_NEW variable set:

add_test(NAME MyTest CONFIGURATIONS Debug COMMAND MyExecutable)
set_tests_properties(MyTest PROPERTIES ENVIRONMENT "GLIBCXX_FORCE_NEW=1")

Answered By - sakra

Answer Checked By - Gilberto Lyons (WPSolving Admin)