Aside from specifying the tools to use, no other changes are required to the CMake specification files. You can specify the build tools that you want to use for example, you can use MSVC or LLVM on Windows, and gnu or LLVM on Unix-like systems, including Linux, OSX, and MSYS or MinGW. Because it can be called from the command line, it integrates well with continuous integration/continuous build systems. It can even create make files if you want to do everything from the command line. Similar capabilities are available for every other popular IDE. For example, CMake can generate solution (.sln) and project files (.vcxproj) that Visual Studio and Visual Studio Code use on Windows. CMake then takes that information and generates the files needed to build the system. You specify what you want done, not how to do it. Why Use CMake?ĬMake is a powerful and robust build system. Most of the information is applicable to using almost any IDE, or indeed, no IDE at all. I will also use git and Google Test, and port the project from Windows to Linux. To the sub-string beginning at the right-most period.In this article and several more, I will be discussing developing a very simple C++ library and application using CMake and Visual Studio Code. In commands thatĪccept a LAST_ONLY keyword, LAST_ONLY changes the interpretation The period) and until the end of the filename. By default, the extension isĭefined as the sub-string beginning at the left-most period (including The filename is effectively the last item-name of the path, so itĬan also be a hard link, symbolic link or a directory.Ī filename can have an extension. filenameĪ path has a filename if it does not end with a directory-separator. In other words, /usr///////lib is the same as /usr/lib. If this character is repeated, it is treated as a single directory The only recognized directory separator is a forward slash character /. The ()* characters are not part of the path. Or more item names, with multiple items separated by aĭirectory-separator. The (.)* pattern shown above is to indicate that there can be zero is aĭirectory name that refers to the parent directory. The item name consisting of two dot characters. is aĭirectory name that refers to the current directory. The item name consisting of a single dot character. Path Structure And Terminology ¶Ī path has the following structure (all components are optional, with some The name of a variable into which the result of a command will be written. See the description ofĮach command to see how this is interpreted. With a special separator depending on the command. Ī string literal which may contain a path, path fragment, or multiple paths For commands that expect a Īs input, the variable must exist and it is expected to hold a single path. The following conventions are used in this command's documentation: Īlways the name of a variable. Synopsis ¶ Conventions Path Structure And Terminology Normalization DecompositionĬmake_path( APPEND )Ĭmake_path( APPEND_STRING )Ĭmake_path( REMOVE_FILENAME )Ĭmake_path( REPLACE_FILENAME )Ĭmake_path( REMOVE_EXTENSION )Ĭmake_path( REPLACE_EXTENSION )Ĭmake_path( NORMAL_PATH )Ĭmake_path( RELATIVE_PATH )Ĭmake_path( ABSOLUTE_PATH )Ĭmake_path( CONVERT TO_CMAKE_PATH_LIST )Ĭmake_path( CONVERT TO_NATIVE_PATH_LIST ) a drive letter when the host is not Windows), the results If the path contains elements that are not representable on the host the host platform), not the target system. The cmake_path command handles paths in the format of the build system
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