补:从 cmake 的 maillist,我找到了一些答案,原文是:The `IF(var)' or `IF(NOT var)' command expects `var' to be the name of a variable. This is stated in CMake's manual. So, for yoursituation `IF(${libX})' is the same as `IF(/usr/lib/xorg)' and then CMake will check the ...
IF(DEFINED variable)#如果变量被定义,为真。一个小例子,用来判断平台差异: IF(WIN32) MESSAGE(STATUS “This is windows.”) #作一些 Windows 相关的操作 ELSE(WIN32) MESSAGE(STATUS “This is not windows”) #作一些非 Windows 相关的操作 ENDIF(WIN32) 上述代码用来控制在不同的平台进行不同的控制,但是...
IF(string EQUAL number) 数字比较表达式 IF(variable STRLESS string) IF(string STRLESS string) IF(variable STRGREATER string) IF(string STRGREATER string) IF(variable STREQUAL string) IF(string STREQUAL string) 按照字母序的排列进行比较. IF(DEFINED variable),如果变量被定义,为真。 一个小例子,用来...
补:从 cmake 的 maillist,我找到了一些答案,原文是:The `IF(var)' or `IF(NOT var)' command expects `var' to be the name of a variable. This is stated in CMake's manual. So, for your situation `IF(${libX})' is the same as `IF(/usr/lib/xorg)' and then CMake will check ...
//示例1:set(ENV{CXX}"clang++")unset(ENV{VERBOSE})//示例2:set(ENV{CMAKE_PATH}"myown/path/example")# 判断CMAKE_PATH环境变量是否定义if(DEFINEDENV{CMAKE_PATH})//注意此处ENV前没有$符号message("CMAKE_PATH_1: $ENV{CMAKE_PATH}")//注意此处ENV前有$符号else()message("NOT DEFINED CMAKE...
IF(string STRGREATER string) IF(variable STREQUAL string) IF(string STREQUAL string) 按照字母序的排列进行比较. IF(DEFINED variable),如果变量被定义,为真。一个小例子,用来判断平台差异: IF(WIN32) MESSAGE(STATUS “This is windows.”) #作一些 Windows 相关的操作ELSE(WIN32) MESSAGE(STATUS “This ...
if(CMAKE_COMPILER_IS_GNUCXX) add_compile_options(-std=c++11) message(STATUS "optional:-std=c++11") endif(CMAKE_COMPILER_IS_GNUCXX) 1. 2. 3. 4. 设置C标准: set(CMAKE_CXX_STANDARD 11) 设置C编译器: set(CMAKE_C_COMPILER "gcc") ...
#ifdefined(_WIN32)#ifdefined(EXPORTING_MYMATH)#defineDECLSPEC __declspec(dllexport)#else#defineDECLSPEC __declspec(dllimport)#endif#else// non windows#defineDECLSPEC#endifnamespace mathfunctions{doubleDECLSPECsqrt(doublex);} 此时,如果您构建了所有内容,则会注意到链接会失败,因为我们将没有位置的静态库...
thestring(CONCAT VELOX_PROTOBUF_SOURCE_URL "xx" "xx")in theprotobuf.cmakefile will causeif(DEFINED ${var_name})to return true, so the URL set by the env variable will never take effect. Could you please let me know which method you are trying to adapt the call toset_with_default?
if (${PROJECT_NAME}_BUILD_TEST) message(STATUS "KAIZEN_BUILD_TEST is ON") else() message(STATUS "KAIZEN_BUILD_TEST is OFF") endif() message(STATUS "\n") ## 示例2:赋值为非ON、非OFF值 option(${PROJECT_NAME}_BUILD_EXAMPLE "构建示例模块" AAA) if (DEFINED ${PROJECT_NAME}_BUILD_EXAM...