![]() 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. How to configure for a debug build or a release build. You will most likely have to engage in debugging your CMake scripts at one point or. How to see compile flags and definitions and how to control them. NOTE: How I'm using generator expressions to specify the configuration! How to see compile flags and definitions and how to control them. Target_compile_definitions(foobar PRIVATE # target_compile_options, target_link_options, etc. As part of that change, the manual -g flag will be removed and CMAKEBUILDTYPE will default to. traces with message (SENDERROR) calls use the -debug-output flag To watch variables. You can modify/add to the flags by specifying a toolchain file in which you can add CMAKEFLAGSINIT variables, e.g.There are also RelWithDebInfo and MinSizeRel build configurations. # Add this compile definition for debug builds, this same logic works for Cmake should still add -g for all debug configurations. You might need to debug your CMake build or debug your C++ code. Release / Debug will add the appropriate flags for your compiler. The modern practice is to use target's and properties. How do I specify debug and release C/C++ flags using CMake? 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 This is basically the result of handling build systems that support multiple-configurations in 1 build. It's a meta-build system (IE a build system that build's build systems). Use the -debug flag to create a build to include extra debugging information, including full stack traces when theres an exception or crash. 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. sudo apt-get update Next, install the GNU compiler, make, and the GDB debugger with this command: sudo apt-get install build-essential gdb Create a CMake project If you have an existing CMake project that already has a CMakeLists.txt file in the root directory, you can skip to Select a kit to configure your existing project. So I'm going to attempt to answer it better. A lot of the answers here are out of date/bad. ![]()
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