CMakeLists.txt 编写问题 - V2EX
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5 条回复    2018-03-01 12:06:00 +08:00
jiutai21
    1
jiutai21  
   2018-03-01 09:49:33 +08:00
set(CMAKE_C_FLAGS "-Wall -O0 -ggdb")
这样
xylophone21
    2
xylophone21  
   2018-03-01 09:51:47 +08:00
内置的方法是:
SET(CMAKE_CXX_FLAGS_DEBUG "$ENV{CXXFLAGS} -O0 -Wall -g -ggdb ")
SET(CMAKE_CXX_FLAGS_RELEASE "${ENV{CXXFLAGS} -O3 -Wall")
cmake -DCMAKE_BUILD_TYPE=Debug/Release path

自定义的方法是:
cmake -DXXX=1
if(XXX STREQUAL 1)
suikator
    3
suikator  
   2018-03-01 09:54:42 +08:00 via Android
set(CMAKE_BUILD_TYPE "Debug")
set(CMAKE_CXX_FLAGS_DEBUG "$ENV{CXXFLAGS} -O0 -Wall -g -ggdb")
set(CMAKE_CXX_FLAGS_RELEASE "$ENV{CXXFLAGS} -O3 -Wall")
radioactivezx
    4
radioactivezx  
   2018-03-01 10:47:39 +08:00
上面说的直接设置 CMAKE_C_FLAGS/CMAKE_CXX_FLAGS,对 Debug/Release/RELWITHDEBINFO/MINSIZEREL 单独设置也可以。

有专门的命令 add_compile_options 对目录级别设置。

对单独 target 设置可以用 target_compile_options 或更通用也更麻烦的 set_target_properties(... COMPILE_FLAGS ...) 设置。

具体以上命令可以查 CMake 文档。

@suikator set(CMAKE_BUILD_TYPE "Debug") 是没有用的,如果想要默认直接设置 CMAKE_BUILD_TYPE 应该 set(CMAKE_BUILD_TYPE "Debug" CACHE STRING "" FORCE)
700388
    5
700388  
   2018-03-01 12:06:00 +08:00
cmake -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release
cmake -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Debug

前提要在 CMakeLists.txt 声明。
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