How can I work this out? I tried looking for a way to parse command line arguments, but found none that doesn't involve using a wrapper script, which I'd like to avoid resorting to. I thought I'd be able to work around the issue by "catching" the value of the -G argument with CMAKE_GENERATOR, but it turns out I can't, as per the first output line Current generator. (There is no such file as CMakeCache.txt or a CMakeFiles directory, but explicitly specifying a generator in the command line, that is different from the one specified in Preload.CMake, seems to be enough of a source of confusion to print out this message.) G "MSYS Makefiles" from a MSYS terminal (empty directory, no cache): Current generator:ĬMake Error: Error: generator : MSYS Makefilesĭoes not match the generator used previously: MinGW MakefilesĮither remove the CMakeCache.txt file and CMakeFiles directory or choose a different binary directory. The problem with this is when I want to specify a generator through the command line. This section explains basic aspects of CMake which you may need in your day-to-day usage. Build files have been written to: C:/Users/SAYENS/Desktop/picross/build Options and variables CMake generators Ninja Xcode Visual Studio Basic CMake usage. 2009 of CMake/Source/cmake.cxx chooses the default Visual Studio generator. Check for working CXX compiler: C:/MinGW/bin/g++.exe - works List: cmake Subject: Re: CMake How to change/set default generator From. Check for working CXX compiler: C:/MinGW/bin/g++.exe The CXX compiler identification is GNU 8.2.0 MSVC compiler could not be found, attempting with g++ and MinGW makefiles. is run from an empty directory (no cache, no nothing): Current generator: It works pretty well, here is the output when cmake. This allows a Windows user with no Visual Studio to run cmake. Message( "MSVC compiler could not be found, attempting with g++ and MinGW makefiles." ) Set( CMAKE_GENERATOR "MinGW Makefiles" CACHE STRING "" FORCE ) If( NOT COMMAND cl OR NOT COMMAND nmake ) To clean your project, select Build > Clean Project from the menu bar. For this reason, SET(CMAKEGENERATORPLATFORM 圆4) (or in your case, x86) should do the trick in a Toolchain file.The -D parameter is simply setting this value on command line instead of from within the MyToolChain.cmake, CMakeLists. Message( "Current generator: $" ) # For debugging purposes Note: If you rename or remove a library in your CMake build script, you need to clean your project before Gradle applies the changes or removes the older version of the library from your APK. MitchLindgren CMake Toolchains are special because theyre processed before anything else. I have a CMakeLists.txt file which does its job fine, and I'm using a Preload.CMake file to specify a bunch of stuff, including a certain generator depending on circumstances: if( WIN32 ) set diagnostics:caret from CMakeLists.In all of the following, I'm using Windows, so WIN32 is always defined in CMake.Visual C++ Team Blog: CMake support in Visual Studio – the Visual Studio 2017 RC update.String(REGEX REPLACE "/W" "/W4" CMAKE_CXX_FLAGS "$\\VS2017Toolchain.cmake\"", CMake does not provide any immediate support for this, and the standard solution (as this Q&A suggests) seems to be: if(CMAKE_CXX_FLAGS MATCHES "/W") Click 'OK', then 'OK' again to save the new environment variable. For 'Variable name:', use CMAKEGENERATOR, and for 'Variable value:' use 'MinGW Makefiles'. To work around this, I would need to replace any incompatible compiler option(s) instead of just adding one. button to add a new environment variable. The command line passed to the compiler now contains both /W4 (as intended) as well as /W3 (picked up from somewhere else), producing the following warning: cl : Command line warning D9025: overriding '/W3' with '/W4' The obvious solution add_compile_options("/W4")ĭidn't pan out as expected. In my case I was attempting to set the warning level to 4. Trying to set compiler options, on the other hand, turned out to be anything but trivial. This properly generates build scripts, and compiles and links with no issues. To learn about this combination, I was starting with this basic sample: # CMakeLists.txt Visual Studio 2017 comes with full CMake integration.
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