文章目录
- 问题引入
- 具体处理
- 当前环境
- 例子
- 命令行
- 设置变量
- END 附录
- win cmake 3.24.2 help
- linux cmake 3.10.2 help
cmake基础:
(CMake) 从下载到构建第一个CMake应用_cmake编译qt项目_天赐细莲的博客-CSDN博客
问题引入
在使用cmake的时候，往往想要使用自己需要的生成器。
但是cmake在不指定的情况下，会使用默认的生成器，无论当前环境是否拥有该生成器。
如何处理该情况就是本文的内容。
具体处理
当前环境
# win 10
# cmake version 3.24.2# default Generator * Visual Studio 16 2019
例子
E:.
│ CMakelists.txt
│ main.c
│
└─build
main.c
#include <stdio.h>int main(int argc, const char** argv) {for (int i = 0; i < argc; i += 1) {printf("%s\n", argv[i]);}#ifdef __STDC_VERSION__printf("%ld\n", __STDC_VERSION__);
#endifreturn 0;
}
CMakelists.txt
cmake_minimum_required(VERSION 3.15)project(myCmakeDemoLANGUAGES CVERSION 1.0.0
)set(CMAKE_C_STANDARD 99)set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)set(SRC_FILESmain.c
)add_executable(${PROJECT_NAME}${SRC_FILES}
)
命令行
此方法仅对每次操作有效。
暂时未找到修改default的方法
# 在`build`目录下
cmake -G "MinGW Makefiles" ../# 或者在`CMakelists.txt` 显示指定资源路径和构建路径
# 这种方式可以自动创建`build`目录
cmake -G "MinGW Makefiles" -S . -B ./build
设置变量
在3.15版本开始，支持设定CMAKE_GENERATOR构建器的变量
cmake_minimum_required(VERSION 3.15)project(myCmakeDemoLANGUAGES CVERSION 1.0.0
)## 核心 根据自己分支需求，指定目标的构建工具
if(MSVC)# 3.15 才支持set(CMAKE_GENERATOR "MinGW Makefiles")
elseif(UNIX AND NOT APPLE)set(CMAKE_GENERATOR "Unix Makefiles")
else()message("Waring not Win or Linux")
endif()set(CMAKE_C_STANDARD 99)set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)set(SRC_FILESmain.c
)add_executable(${PROJECT_NAME}${SRC_FILES}
)# # debug and lod message
message("*************************")
# 项目名
message(${PROJECT_NAME})
# 指定编译器
message(${CMAKE_GENERATOR})
# 当前`CMakelists.txt`所在路径
# PROJECT_SOURCE_DIR默认效果相同，但是可配置
message(${CMAKE_CURRENT_SOURCE_DIR})
# build 构建目录
message(${CMAKE_BINARY_DIR})
# 最终程序和动态库所在路径
message(${CMAKE_RUNTIME_OUTPUT_DIRECTORY})
message("*************************")
message效果
*************************
myCmakeDemo
MinGW Makefiles
E:/VS-Code/cmake
E:/VS-Code/cmake/build
E:/VS-Code/cmake/build/bin
*************************
END 附录
win cmake 3.24.2 help
$ cmake --version
cmake version 3.24.2CMake suite maintained and supported by Kitware (kitware.com/cmake).$ cmake --help
Usagecmake [options] <path-to-source>cmake [options] <path-to-existing-build>cmake [options] -S <path-to-source> -B <path-to-build>Specify a source directory to (re-)generate a build system for it in the
current working directory. Specify an existing build directory to
re-generate its build system.Options-S <path-to-source> = Explicitly specify a source directory.-B <path-to-build> = Explicitly specify a build directory.-C <initial-cache> = Pre-load a script to populate the cache.-D <var>[:<type>]=<value> = Create or update a cmake cache entry.-U <globbing_expr> = Remove matching entries from CMake cache.-G <generator-name> = Specify a build system generator.-T <toolset-name> = Specify toolset name if supported bygenerator.-A <platform-name> = Specify platform name if supported bygenerator.--toolchain <file> = Specify toolchain file[CMAKE_TOOLCHAIN_FILE].--install-prefix <directory> = Specify install directory[CMAKE_INSTALL_PREFIX].-Wdev = Enable developer warnings.-Wno-dev = Suppress developer warnings.-Werror=dev = Make developer warnings errors.-Wno-error=dev = Make developer warnings not errors.-Wdeprecated = Enable deprecation warnings.-Wno-deprecated = Suppress deprecation warnings.-Werror=deprecated = Make deprecated macro and function warningserrors.-Wno-error=deprecated = Make deprecated macro and function warningsnot errors.--preset <preset>,--preset=<preset>= Specify a configure preset.--list-presets = List available presets.-E = CMake command mode.-L[A][H] = List non-advanced cached variables.--fresh = Configure a fresh build tree, removing anyexisting cache file.--build <dir> = Build a CMake-generated project binary tree.--install <dir> = Install a CMake-generated project binarytree.--open <dir> = Open generated project in the associatedapplication.-N = View mode only.-P <file> = Process script mode.--find-package = Legacy pkg-config like mode. Do not use.--graphviz=[file] = Generate graphviz of dependencies, seeCMakeGraphVizOptions.cmake for more.--system-information [file] = Dump information about this system.--log-level=<ERROR|WARNING|NOTICE|STATUS|VERBOSE|DEBUG|TRACE>= Set the verbosity of messages from CMakefiles. --loglevel is also accepted forbackward compatibility reasons.--log-context = Prepend log messages with context, if given--debug-trycompile = Do not delete the try_compile build tree.Only useful on one try_compile at a time.--debug-output = Put cmake in a debug mode.--debug-find = Put cmake find in a debug mode.--debug-find-pkg=<pkg-name>[,...]= Limit cmake debug-find to thecomma-separated list of packages--debug-find-var=<var-name>[,...]= Limit cmake debug-find to thecomma-separated list of result variables--trace = Put cmake in trace mode.--trace-expand = Put cmake in trace mode with variableexpansion.--trace-format=<human|json-v1>= Set the output format of the trace.--trace-source=<file> = Trace only this CMake file/module. Multipleoptions allowed.--trace-redirect=<file> = Redirect trace output to a file instead ofstderr.--warn-uninitialized = Warn about uninitialized values.--no-warn-unused-cli = Don't warn about command line options.--check-system-vars = Find problems with variable usage in systemfiles.--compile-no-warning-as-error= Ignore COMPILE_WARNING_AS_ERROR property andCMAKE_COMPILE_WARNING_AS_ERROR variable.--profiling-format=<fmt> = Output data for profiling CMake scripts.Supported formats: google-trace--profiling-output=<file> = Select an output path for the profiling dataenabled through --profiling-format.--help,-help,-usage,-h,-H,/? = Print usage information and exit.--version,-version,/V [<f>] = Print version number and exit.--help-full [<f>] = Print all help manuals and exit.--help-manual <man> [<f>] = Print one help manual and exit.--help-manual-list [<f>] = List help manuals available and exit.--help-command <cmd> [<f>] = Print help for one command and exit.--help-command-list [<f>] = List commands with help available and exit.--help-commands [<f>] = Print cmake-commands manual and exit.--help-module <mod> [<f>] = Print help for one module and exit.--help-module-list [<f>] = List modules with help available and exit.--help-modules [<f>] = Print cmake-modules manual and exit.--help-policy <cmp> [<f>] = Print help for one policy and exit.--help-policy-list [<f>] = List policies with help available and exit.--help-policies [<f>] = Print cmake-policies manual and exit.--help-property <prop> [<f>] = Print help for one property and exit.--help-property-list [<f>] = List properties with help available andexit.--help-properties [<f>] = Print cmake-properties manual and exit.--help-variable var [<f>] = Print help for one variable and exit.--help-variable-list [<f>] = List variables with help available and exit.--help-variables [<f>] = Print cmake-variables manual and exit.GeneratorsThe following generators are available on this platform (* marks default):Visual Studio 17 2022 = Generates Visual Studio 2022 project files.Use -A option to specify architecture.
* Visual Studio 16 2019 = Generates Visual Studio 2019 project files.Use -A option to specify architecture.Visual Studio 15 2017 [arch] = Generates Visual Studio 2017 project files.Optional [arch] can be "Win64" or "ARM".Visual Studio 14 2015 [arch] = Generates Visual Studio 2015 project files.Optional [arch] can be "Win64" or "ARM".Visual Studio 12 2013 [arch] = Generates Visual Studio 2013 project files.Optional [arch] can be "Win64" or "ARM".Visual Studio 11 2012 [arch] = Generates Visual Studio 2012 project files.Optional [arch] can be "Win64" or "ARM".Visual Studio 10 2010 [arch] = Deprecated. Generates Visual Studio 2010project files. Optional [arch] can be"Win64" or "IA64".Visual Studio 9 2008 [arch] = Generates Visual Studio 2008 project files.Optional [arch] can be "Win64" or "IA64".Borland Makefiles = Generates Borland makefiles.NMake Makefiles = Generates NMake makefiles.NMake Makefiles JOM = Generates JOM makefiles.MSYS Makefiles = Generates MSYS makefiles.MinGW Makefiles = Generates a make file for use withmingw32-make.Green Hills MULTI = Generates Green Hills MULTI files(experimental, work-in-progress).Unix Makefiles = Generates standard UNIX makefiles.Ninja = Generates build.ninja files.Ninja Multi-Config = Generates build-<Config>.ninja files.Watcom WMake = Generates Watcom WMake makefiles.CodeBlocks - MinGW Makefiles = Generates CodeBlocks project files.CodeBlocks - NMake Makefiles = Generates CodeBlocks project files.CodeBlocks - NMake Makefiles JOM= Generates CodeBlocks project files.CodeBlocks - Ninja = Generates CodeBlocks project files.CodeBlocks - Unix Makefiles = Generates CodeBlocks project files.CodeLite - MinGW Makefiles = Generates CodeLite project files.CodeLite - NMake Makefiles = Generates CodeLite project files.CodeLite - Ninja = Generates CodeLite project files.CodeLite - Unix Makefiles = Generates CodeLite project files.Eclipse CDT4 - NMake Makefiles= Generates Eclipse CDT 4.0 project files.Eclipse CDT4 - MinGW Makefiles= Generates Eclipse CDT 4.0 project files.Eclipse CDT4 - Ninja = Generates Eclipse CDT 4.0 project files.Eclipse CDT4 - Unix Makefiles= Generates Eclipse CDT 4.0 project files.Kate - MinGW Makefiles = Generates Kate project files.Kate - NMake Makefiles = Generates Kate project files.Kate - Ninja = Generates Kate project files.Kate - Unix Makefiles = Generates Kate project files.Sublime Text 2 - MinGW Makefiles= Generates Sublime Text 2 project files.Sublime Text 2 - NMake Makefiles= Generates Sublime Text 2 project files.Sublime Text 2 - Ninja = Generates Sublime Text 2 project files.Sublime Text 2 - Unix Makefiles= Generates Sublime Text 2 project files.
linux cmake 3.10.2 help
$ cmake --version
cmake version 3.10.2CMake suite maintained and supported by Kitware (kitware.com/cmake).$ cmake --help
Usagecmake [options] <path-to-source>cmake [options] <path-to-existing-build>Specify a source directory to (re-)generate a build system for it in the
current working directory. Specify an existing build directory to
re-generate its build system.Options-C <initial-cache> = Pre-load a script to populate the cache.-D <var>[:<type>]=<value> = Create a cmake cache entry.-U <globbing_expr> = Remove matching entries from CMake cache.-G <generator-name> = Specify a build system generator.-T <toolset-name> = Specify toolset name if supported bygenerator.-A <platform-name> = Specify platform name if supported bygenerator.-Wdev = Enable developer warnings.-Wno-dev = Suppress developer warnings.-Werror=dev = Make developer warnings errors.-Wno-error=dev = Make developer warnings not errors.-Wdeprecated = Enable deprecation warnings.-Wno-deprecated = Suppress deprecation warnings.-Werror=deprecated = Make deprecated macro and function warningserrors.-Wno-error=deprecated = Make deprecated macro and function warningsnot errors.-E = CMake command mode.-L[A][H] = List non-advanced cached variables.--build <dir> = Build a CMake-generated project binary tree.-N = View mode only.-P <file> = Process script mode.--find-package = Run in pkg-config like mode.--graphviz=[file] = Generate graphviz of dependencies, seeCMakeGraphVizOptions.cmake for more.--system-information [file] = Dump information about this system.--debug-trycompile = Do not delete the try_compile build tree.Only useful on one try_compile at a time.--debug-output = Put cmake in a debug mode.--trace = Put cmake in trace mode.--trace-expand = Put cmake in trace mode with variableexpansion.--trace-source=<file> = Trace only this CMake file/module. Multipleoptions allowed.--warn-uninitialized = Warn about uninitialized values.--warn-unused-vars = Warn about unused variables.--no-warn-unused-cli = Don't warn about command line options.--check-system-vars = Find problems with variable usage in systemfiles.--help,-help,-usage,-h,-H,/? = Print usage information and exit.--version,-version,/V [<f>] = Print version number and exit.--help-full [<f>] = Print all help manuals and exit.--help-manual <man> [<f>] = Print one help manual and exit.--help-manual-list [<f>] = List help manuals available and exit.--help-command <cmd> [<f>] = Print help for one command and exit.--help-command-list [<f>] = List commands with help available and exit.--help-commands [<f>] = Print cmake-commands manual and exit.--help-module <mod> [<f>] = Print help for one module and exit.--help-module-list [<f>] = List modules with help available and exit.--help-modules [<f>] = Print cmake-modules manual and exit.--help-policy <cmp> [<f>] = Print help for one policy and exit.--help-policy-list [<f>] = List policies with help available and exit.--help-policies [<f>] = Print cmake-policies manual and exit.--help-property <prop> [<f>] = Print help for one property and exit.--help-property-list [<f>] = List properties with help available andexit.--help-properties [<f>] = Print cmake-properties manual and exit.--help-variable var [<f>] = Print help for one variable and exit.--help-variable-list [<f>] = List variables with help available and exit.--help-variables [<f>] = Print cmake-variables manual and exit.GeneratorsThe following generators are available on this platform:Unix Makefiles = Generates standard UNIX makefiles.Ninja = Generates build.ninja files.Watcom WMake = Generates Watcom WMake makefiles.CodeBlocks - Ninja = Generates CodeBlocks project files.CodeBlocks - Unix Makefiles = Generates CodeBlocks project files.CodeLite - Ninja = Generates CodeLite project files.CodeLite - Unix Makefiles = Generates CodeLite project files.Sublime Text 2 - Ninja = Generates Sublime Text 2 project files.Sublime Text 2 - Unix Makefiles= Generates Sublime Text 2 project files.Kate - Ninja = Generates Kate project files.Kate - Unix Makefiles = Generates Kate project files.Eclipse CDT4 - Ninja = Generates Eclipse CDT 4.0 project files.Eclipse CDT4 - Unix Makefiles= Generates Eclipse CDT 4.0 project files.KDevelop3 = Generates KDevelop 3 project files.KDevelop3 - Unix Makefiles = Generates KDevelop 3 project files.
