根据Condition syntax评估if子句的条件参数(<condition>)。如果结果为true,则执行if块(block)中的命令。否则,以相同方式处理可选的elseif块.最后,如果没有条件为true,则执行可选else块中的命令。 Condition Syntax:以下语法适用于if、elsif和while子句的条件参数。 复合条件(compound condition)按以下优先顺序进行评估:...
cmake_minimum_required(VERSION 3,.10) project(syntax_test) message("===常量 if ===") #常量 if(1) message("1字符串 是 true") endif的() if(0) message("0 是 true值") else() message("判断0 是 false") endif # 规则() # 未定义的如下变量 if(UNDEFINED): message("-UNDEFINED 是 ...
if (status.ok()) { return avg_score.score(); } else { std::cout << status.error_code() << ": " << status.error_message() << std::endl; return -1; } } private: std::unique_ptr<test::idl::Test::Stub> stub_; }; int main() { std::string target = "localhost:50062";...
{_output_name}_d")else()# 否则直接修改OUTPUT_NAME_DEBUGset_target_properties(${target}PROPERTIESOUTPUT_NAME_DEBUG"${target}_d")endif()get_target_property(_output_name ${target}OUTPUT_NAME_DEBUG)# 显示修改后的结果message(STATUS"TARGET:${target} OUTPUT_NAME_DEBUG=${_output_name}")# 清除...
# If you do want to change a value, simply edit, save, and exit the editor. # The syntax for the file is as follows: # KEY:TYPE=VALUE # KEY is the name of a variable in the cache. # TYPE is a hint to GUIs for the type of VALUE, DO NOT EDIT TYPE!. # VALUE is the curr...
关于项目构建我们所熟知的还有Makefile(通过make命令进行项目的构建),大多是IDE软件都集成了make,比如:VS的nmake、linux下的GNU make、Qt的qmake等,如果自己动手写makefile,会发现,makefile通常依赖于当前的编译平台,而且编写makefile的工作量比较大,解决依赖关系时也容易出错。而CMake恰好能解决上述问题,其允许开发者...
ccmake 2.8.6 Last change: June 17, 2014 19 User Commands ccmake(1) elseif(expression) See the if command. enable_language Enable a language (CXX/C/Fortran/etc) enable_language(languageName [OPTIONAL] ) This command enables support for the named language in CMake. This is the same as...
if (CMAKE_BUILD_TYPE MATCHES Debug) add_definitions(-DDEBUG=1) endif() You can also create conditional statements in your code based on the current build type: int main(int argc, const char* argv[]) { #if DEBUG ... #else ... #endif Custom build types The list of the availabl...
编写CMakeLists.txt 文件时使用的语法称为CMake 语法(CMake syntax)或CMake 脚本语言(CMake scripting language)。CMake 语法用于编写 CMakeLists.txt 文件,指导 CMake 如何为项目生成构建系统。CMake 脚本语言包括指令、变量、函数、宏、控制结构等,用于组织和控制项目的构建过程。 CMakeLists.txt 是用于编写 C...
//示例2:6、set(ENV{CMAKE_PATH}"myown/path/example")7、#判断CMAKE_PATH环境变量是否定义8、if(DEFINEDENV{CMAKE_PATH})//注意此处ENV前没有$符号9、message("CMAKE_PATH_1: $ENV{CMAKE_PATH}")//注意此处ENV前有$符号10、else()11、message("NOT DEFINED CMAKE_PATH VARIABLES")12、endif()...