CMake是否总是为所有可能的项目配置生成配置?

Does CMake always generate configurations for all possible project configurations?

本文关键字：配置 项目 有可能 是否 CMake      更新时间：2023-10-16

我有调试和发布选项的特定配置(MSVC和GCC不同)。假设我们通过cmake ..生成默认项目。CMake总是为所有可能的项目配置(调试和发布)生成配置，还是总是只得到一组配置选项?

正如@cplusplusrat所评论的，这取决于生成器/构建环境:

  • 对于像MSVC或XCode这样的多配置环境，可以。
  • 对于像GCC这样的单配置环境，no.

单配置环境的默认值既不是Debug也不是Release(参见这里或这里)。

所以我总是为单配置环境定义一个CMAKE_BUILD_TYPE作为默认值。你也可以这样做，例如在构建脚本中调用CMake:

mingw_build.cmd 

@ECHO off
SETLOCAL ENABLEDELAYEDEXPANSION
:: usage:
::          mingw_build.cmd <target> <config>
::                  <target> - target to be built (default: all)
::                  <config> - configuration to be used for build (default: Debug)
if NOT "%1" == "" (set CMAKE_TARGET=%1) else (set CMAKE_TARGET=all)
if NOT "%2" == "" (set CMAKE_BUILD_TYPE=%2) else (set CMAKE_BUILD_TYPE=Debug)
SET CMAKE_BINARY_DIR=%CMAKE_BUILD_TYPE%
IF NOT EXIST "%CMAKE_BINARY_DIR%Makefile" (
    cmake -H"." -B"%CMAKE_BINARY_DIR%" -DCMAKE_BUILD_TYPE=%CMAKE_BUILD_TYPE% -G"MinGW Makefiles"
)
cmake --build %CMAKE_BINARY_DIR% --target %CMAKE_TARGET%
ENDLOCAL

vs_x64_build.cmd 

@ECHO off
SETLOCAL ENABLEDELAYEDEXPANSION
:: usage:
::          vs_x64_build.cmd <target> <config>
::                  <target> - target to be built (default: ALL_BUILD)
::                  <config> - configuration to be used for build (default: Debug)
if NOT "%1" == "" (SET CMAKE_TARGET=%1) else (SET CMAKE_TARGET=ALL_BUILD)
if NOT "%2" == "" (set CMAKE_BUILD_TYPE=%2) else (set CMAKE_BUILD_TYPE=Debug)
SET CMAKE_BINARY_DIR=x64
IF NOT EXIST "%CMAKE_BINARY_DIR%*.sln" (
    cmake -H"." -B"%CMAKE_BINARY_DIR%" -G"Visual Studio 14 2015 Win64"
)
cmake --build "%CMAKE_BINARY_DIR%" --target "%CMAKE_TARGET%" --config "%CMAKE_BUILD_TYPE%"
ENDLOCAL
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