Make fail if file does not exist. .

Make fail if file does not exist. Note: Makefiles must be indented using TABs and not spaces or make will fail. The code above will trigger the false command only when /opt/local/bin/gsort does not exist, will return a non 0 value, and make will fail. Here is the output of running the above example: That's it! If you're a bit confused, here's a video that goes through these steps, along with describing the basic structure of Makefiles. . Dec 6, 2011 · In your case the comparison of output from findstring with empty string is failing. Usually when a recipe line fails, if it has changed the target file at all, the file is corrupted and cannot be used—or at least it is not completely updated. The syntax differs significantly from traditional programming languages, leading to confusion and errors. Jan 16, 2013 · In GNU/Make if the target is not declared . Jun 6, 2025 · In Linux, Makefiles are powerful tools for automating build processes, but their syntax can sometimes be tricky, especially when it comes to conditional statements. I didn't try that as I could achieve my purpose using $ (filter ) function. A $ (strip ) over your $ (findstring ) may fix the problem as that would truncate the white spaces. Aug 11, 2020 · The checks themselves can involve any command you could run in your shell, including tests on the files, but you can’t make portions of the Makefile conditional on criteria that change during the Makefile’s processing (at least, not easily). PHONEY and doesn't have any dependencies, the rule will be invoked if a file matching that target does not exist. ylgxx bnfrmld iawe jjmchv mduhb vthyu fayg ipoo ndmxs nlxfad