`check_library_exists`命令的工作原理是使用一个C程序尝试链接给定的库并调用指定的函数。如果链接成功并且函数可用,则将结果存储在给定的变量中。否则,将返回结果`0-NOTFOUND`。 下面是一个使用`check_library_exists`命令的示例: ```cmake check_library_exists(m sqrt my_sqrt HAVE_SQRT) if(HAVE_SQRT) me...
在上面的例子中,我们首先指定了项目名称,并设置了最低要求的CMake版本。然后,使用check_library_exists函数,我们检查了math库中的sin函数是否存在。这里传递的空格是因为CMake要求传递一个空字符串给此函数,用于指定默认的查找路径。 在检查库之后,我们使用if语句来根据检查结果输出相应的消息。如果HAS_MATH_LIB为真,...
check_library_exists 的工作原理如下: 指定库和函数/变量:首先,你需要指定要检查的库(或库的名称)以及要查找的特定函数或变量。 查找库:CMake 会搜索系统上的库路径,以找到指定的库。这包括标准系统库路径、CMAKE_PREFIX_PATH、CMAKE_LIBRARY_PATH 等环境变量中指定的路径,以及任何在 find_package 或 find_libr...
为了更好地理解check_library_exists的使用方法和原理,我们来看一个例子。假设我们想检查是否存在名为mylibrary的库中的sum函数,代码如下: cmake cmake_minimum_required(VERSION 3.12) project(MyProject) #检查math库中是否存在sum函数 check_library_exists(mylibrary sum HAVE_SUM) #根据检查结果输出消息 if(HAVE...
check_library_exists("libcurl" "" "" HAVE_CURL) HAVE_CURL is always false, even if libcurl installed, and this function not causes fatal errors. To check why a a try-compile fails, you can run CMake with the--debug-trycompileoption, which will leave behind the buildsystem for the las...
= 0) { if (strcmp(shFileInfo.szTypeName, "File Folder") == 0) { MessageBox(NULL, "Exists", "DIRECTORY", MB_OK); } else { MessageBox(NULL, "NOT FOUND", "DIRECTORY", MB_OK); } } else { // SHGetFileInfo() failed... }...
If that directory doesn't exist, CMake gives an error. Suggested Fix: @lasote suggested adding a step to check that each directory exists before adding it to the generated .cmake file. This makes sense to me. Notes: The error appears to be nonfatal. The same logic probably applies to...
其中,<OPERATION>表示要执行的文件操作,常见的操作包括EXIST、IS_DIRECTORY、IS_REGULAR_FILE等。<OUTPUT_VARIABLE>表示将结果保存到的变量名。<arguments...>是具体的操作参数,比如要检查的文件路径等。 下面是一个示例,演示如何在CMake中检查文件是否存在: 代码语言:txt 复制 file(EXISTS "path/to/file.txt" fil...
BasicConfigVersion-AnyNewerVersion.cmake.in BasicConfigVersion-ExactVersion.cmake.in BasicConfigVersion-SameMajorVersion.cmake.in BasicConfigVersion-SameMinorVersion.cmake.in BundleUtilities.cmake CMake.cmake CMakeASM-ATTInformation.cmake CMakeASMCompiler.cmake.in CMakeASMInformation.cmake CMakeASM_MAR...
Im trying to build OpenAL-Soft for an ARM machine (the 3ds) and it stops in the cmake process when CHECK_SYMBOL_EXISTS can't find nanosleep function in time.h i tried commenting the error in CMakeLists.txt to see what would happen and the cmake process works but pth...