我们需要在子目录 CMakeLists.txt 文件中设置 MY_VAL 时,加上 PARENT_SCOPE 属性。即用如下代码:set(MY_VAL "777" PARENT_SCOPE),子目录 CMakeLists.txt 文件如下: cmake_minimum_required(VERSION3.10) message("进入子目录 src/CMakeLists.txt 文件") set(MY_VAL "777" PARENT_SCOPE) # 修改处 messag...
{_radius}}" PARENT_SCOPE) endfunction() function(Sphere_Get _sphere _center _radius) list(GET ${_sphere} 0 1 2 center) list(GET ${_sphere} 3 radius) set(${_center} ${center} PARENT_SCOPE) set(${_radius} ${radius} PARENT_SCOPE) endfunction() #=== # camera arguments set(width...
set(VAR_NAME v1 ... [PARENT_SCOPE]) 1. 当传入多个v时VAR_NAME变成列表,PARENT_SCOPE在函数定义中可以起到返回值的作用。 因为函数没有返回,所以也就没函数嵌套的概念... Reading list(LENGTH <list> <out-var>) list(GET <list> <element index> [<index> ...] <out-var>) list(JOIN <list>...
Before processing the CMakeLists.txt file for a directory, CMake copies all variable bindings currently defined in the parent directory, if any, to initialize the new directory scope. .---from cmake language 目录作用域的启用一般是在父目录下的CmakeList.txt中有add_subdirectory(“子目录路径”)...
在 函数中修改值,那么也是用 set($ 888 PARENT_SCOPE)。此时,退出函数第二次打印变量值时。该值就是在函数中修改好的值 888。本质讲,对于 function() 而言,刚刚说到的父目录其实不是严格正确的。因为函数定义可以是在其他 .cmake 模块文件中定义的。也可以在其他 CMakeLists.txt 文件中调用,因此准确的说,...
set(${HDRS} ${${HDRS}} PARENT_SCOPE) endfunction() # Add protobuf to a specified target. function(netdata_add_protobuf _target) target_compile_definitions(${_target} PRIVATE ${NETDATA_PROTOBUF_CFLAGS_OTHER}) target_include_directories(${_target} PRIVATE ${NETDATA_PROTOBUF_INCLUDE_DIRS})...
程序的组成，完整说明了 CMake 的基础语法，包括变量、控制结构、条件语法等，还对 math、string、list...
如果对C/C++比较熟悉的话,CMake中变量的作用域就可以类比C/C++中的一些定义,举例来说,(1)、CMake中变量的函数作用域可类比成C/C++中函数的参数值传递(不是引用、也不是指针),也就是说在一般情况下CMake函数中对变量的修改不会影响到函数外的CMake变量value值,而CMake函数中的变量就是从parent scope中“查...
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message(STATUS "Sanitizer MSVC::_CrtDumpMemoryLeaks added to ${_target}") else() # FLATBUFFERS_CODE_SANITIZE: boolean {ON,OFF,YES,NO} or string with list of sanitizer. # List of sanitizer is string starts with '=': "=address,undefined,thread,memory". if(IS_CLANG OR (CMAKE_COMPILER...