CMake Error at examples/CMakeLists.txt:29 (include_directories): include_directories given empty-string as include directory.
SEND_ERROR:CMake错误,会继续执行,但是会跳过生成构建系统 FATAL_ERROR:CMake致命错误,会终止进程 2 条件分支 这里以if()/elseif()/else()/endif()举个例子,for/while循环也是类似的: set(EMPTY_STR "") if (NOT EMPTY_STR AND FLAG AND NUM LESS 50 AND NOT NOT_DEFINE_VAR) message("The first if...
正如你所知,cmake_minimum_required()将检查系统是否有正确的 CMake 版本,但隐式地,它还会调用另一个命令,cmake_policy(VERSION),这将告诉 CMake 对于这个项目应该使用哪些正确的策略。这些策略是什么? 在CMake 发展的过去 20 年中,随着 CMake 及其支持的语言的发展,命令的行为发生了许多变化。为了保持语法简洁...
Each variable reference will be replaced with the current value of the variable, or the empty string if the variable is not defined. Furthermore, input lines of the form: 拷贝一个 (输入文件) 文件到 (输出文件),并且替换输入文件中被 @VAR@ 或者 ${VAR} 引用的变量值。每一个变量将被替换成...
XREPO_PLATFORM: string, defaults to empty string Specify platform name. IfXREPO_TOOLCHAINis specified and this is not,XREPO_PLATFORMwill be set tocross. XREPO_ARCH: string, defaults to empty string Specify architecture name. XREPO_XMAKEFILE: string, defaults to empty string ...
return std::string("Hello from an unknown system!"); #endif } int main() { std::cout << say_hello() << std::endl; return EXIT_SUCCESS; } 如何操作 让我们构建一个对应的CMakeLists.txt实例,这将使我们能够根据目标操作系统有条件地编译源代码: ...
empty, 0, N, NO, OFF, FALSE, NOTFOUND, or -NOTFOUND. if(var) some_command(...) endif(var) ``` 循环结构:foreach和while ```cmake set(VAR a b c) loop over a, b,c with the variable f foreach(f ${VAR}) message(${f}) endforeach(f) ``` ...
Do NOT include spaces in the arguments after the first. That will be seen as part of the string. comma := , empty:= space :=$(empty)$(empty)foo := a b c bar :=$(subst$(space),$(comma),$(foo))# Watch out!all:# Output is ", a , b , c". Notice the spaces introduced...
test -n "$$unique" || unique=$$empty_fix; \ if test $$# -gt 0; then \ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ "$$@" $$unique; \ else \ $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \ $$unique; \ fi; \ fi ctags: ...
Trueifthe constant is1, ON, YES, TRUE, Y, or a non-zero number. Falseifthe constant is0, OFF, NO, FALSE, N, IGNORE, NOTFOUND, the emptystring, or endsinthe suffix -NOTFOUND. Named boolean constants arecase-insensitive. If the argument is not one of these constants, it is treated...