Your last question really doesn't make sense. How do I express that the main executable will be compiled with g++ and one nested library with gcc? Don't use old style cmake unless you have to (that path is a land of nightmares) Those functions support generator expressions. Use add_compile_definitions, add_compile_options, etc. Using CMAKE_BUILD_TYPE will result in bad builds for any multi-configuration generator!įurther more sometimes you need to set things globally and not just for one target. NOTE: How I'm using generator expressions to specify the configuration! If it is set to Debug executables and libraries specified in your CMakeLists.txt file will be. Target_compile_definitions(foobar PRIVATE The build type is controlled via the variable CMAKEBUILDTYPE. # target_compile_options, target_link_options, etc. # Add this compile definition for debug builds, this same logic works for The modern practice is to use target's and properties. How do I specify debug and release C/C++ flags using CMake? debug target, one that is within the parts of the CMake build Visual. If you'd like a deeper understanding I'd suggest reading a bit about cmake in Craig Scott's book "Professional CMake: A Practical Guide When using CMake with Visual Studio the debugging experience for Windows is less. This is basically the result of handling build systems that support multiple-configurations in 1 build. If the CMAKEBUILDTYPE environment variable is set, its value is used. This variable is initialized by the first project () or enablelanguage () command called in a project when a new build tree is first created. It's a meta-build system (IE a build system that build's build systems). Typical values include Debug, Release, RelWithDebInfo and MinSizeRel, but custom build types can also be defined. If you are wondering why this is necessary it's because cmake isn't a build system. B build/ -D CMAKE_BUILD_TYPE=Releaseįor multi-configuration generators it's slightly different (Ninja Multi-Config, Visual Studio) # Configure the build B build/ -D CMAKE_BUILD_TYPE=DebugĬmake -S. If you are using a single configuration generator (Ninja/Unix-Makefiles) you must specify the CMAKE_BUILD_TYPE.Ĭmake -S. How do I run CMake for each target type (debug/release)?įirst off Debug/Release are called configurations in cmake (nitpick). Granted I'm answering this question in 2020, so it's expected things would change. So I'm going to attempt to answer it better. There are several methods for debugging your CMake code.ĬMake can help you debug and profile your source code.A lot of the answers here are out of date/bad. You can set these when building if you want.
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