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When working with a Makefile project under VCS, consider not to share the. To load the Makefile when ready, open it in the editor and click the Load Makefile project link in the notification:Īlternatively, use the Load Makefile Project action from the file's context menu in the project tree. This is helpful, for example, if your project requires some preconfigure step or launching a script to prepare the final Makefile, so you don't have it when opening your project in CLion. You can also open a project as a folder and load the Makefile later. Take a look at the Troubleshooting section if your project fails to load correctly. Warning messages may appear during the process, but if loading finishes with a green checkmark next to the project name, this indicates a successful load. You will be able to clean and reload your project later (for example, after performing the required bootstrapping).Īt this point, CLion starts loading the project, displaying the progress and status in the Build tool window: When run on an uncleaned project, reload will miss all the unchanged files and might perform incorrectly.Ĭlear the Clean project checkbox if you prefer to load without cleaning. You will be prompted to clean the project:Ĭleaning is required for the project load as the Make build is incremental and only the updated files are compiled.
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In the dialog that opens, click Open as Project. Point CLion to a folder that contains the top-level Makefile or to that file directly: Refer to Autotools if your Makefile project requires pre-configuration. The list of the open-source projects that Makefile support has been tested on is available here. Use the tickets linked to CPP-494 to leave your feedback and vote for the desired features. Note that Makefiles support in CLion is in its early stages.
HOW TO WRITE A MAKEFILE FOR MULTIPLE FILES UPDATE
Update all the object files with `make -t'.You can load Makefile projects in CLion and benefit from all the smart features the IDE provides. If several header files are involved, use a separate `-o' option for each header file. Recompile the source files that need compilation for reasons independent of the particular header file, with `make -o header file'. This means, the file itself will not be remade, and nothing else will be remade on its account. Instead, you can use the `-o file' flag, which marks a specified file as "old". If you have already changed the header file at a time when some files do need recompilation, it is too late to do this. The next time you run make, the changes in the header files do not cause any recompilation. Use the command `make -t' to mark all the object files as up to date. Use the command `make' to recompile the source files that really need recompilation. This flag tells make not to run the commands in the rules, but rather to mark the target up to date by changing its last-modification date. If you anticipate the problem before changing the header file, you can use the `-t' flag.
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Being conservative, make assumes that any change in the header file requires recompilation of all dependent files, but you know that they do not need recompilation and you would rather not waste your time waiting for them to compile. For example, suppose you add a macro or a declaration to a header file, on which the other files depend.
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Sometimes you may have changed a source file but you may not want to recompile all the files that depend on it. There may be a project consisting of thousands of files. If source file has a newer time stamp than the object file, then it generates new object file assuming that the source file has been changed. While compiling a file, the make checks its object file and compares the time stamps. However if you make any change in main.cpp, as this is not dependent of any other file, then only main.cpp file is recompiled, and help.cpp and factorial.cpp are not. Hence if you make any changes in functions.h, then the make recompiles all the source files to generate new object files. If you have four files main.cpp, hello.cpp, factorial.cpp and functions.h, then all the remaining files are dependent on functions.h, and main.cpp is dependent on both hello.cpp and factorial.cpp. The make program is an intelligent utility and works based on the changes you do in your source files.