![]() ![]() In the above example, I simply use the default paths for AppVeyor's VMs. The catch here is that when you go for MSYS Makefiles, or MinGW Makefiles for that matter, you should define your PATH variable to include the binaries to the compiler toolchain. This example successfully builds on AppVeyor with both of the toolchains. With hello.c having the contents #include ĬMakeLists.txt having the contents cmake_minimum_required(VERSION 3.10)Īnd finally, appveyor.yml having the following image: Visual Studio 2013 Below is a minimal working example based on your code.Īssume that you have the following directory structure. Instead, you should (re)define your PATH environment variable to include the corresponding (i.e., MinGW or Cygwin) binaries, and select an appropriate generator. To be able to use the locally installed gcc compiler, you do not need to play with any of the (related) variables inside your CMakeLists.txt file. Using toolchain files, you can not only define different compiler/linker setups for your host but also do cross-compilation, in which the host and target devices are of different architecture.ĮDIT. ![]() Having this in mind, please do not mess with the CMAKE_C(XX)_COMPILER variables directly in your CMakeLists.txt, but rather think of using toolchain files to define the specific compiler/linker properties. You define the dependencies and set the language requirements for your targets, and you ask CMake to generate files to help you build your targets. Name of generator.ĬMAKE_GENERATOR:INTERNAL=Visual Studio 15 2017ĬMAKE_GENERATOR_INSTANCE:INTERNAL=C:/Program Files (x86)/Microsoft Visual Studio/2017/BuildTools/ĬMake is a tool that is intended for defining dependencies among the targets in your application. It is trying to point to the correct compiler, but it is using the Visual Studio Generator still. When i look at the cache file created when using the toolchain file, i find something interesting. Set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) Set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) Set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) # search headers and libraries in the target environment, search # adjust the default behaviour of the FIND_XXX() commands: SET(CMAKE_FIND_ROOT_PATH C:/MyPrograms/MinGW/bin/ ) # The target of this operating systems is I tried to make it work using the following toolchain file, but it still chooses Visual Studio build tools. But when i try to set the CMAKE_C_COMPILER variable, it seems to fail. Specifically, I want it to use the locally installed GCC compiler. I am trying to get CMAKE to use a specific compiler when running.
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