Makefile check if directory not exists. I tried this but it didn't work Mar 11, 2016 · test if directory exists in a makefile. I tried this but it didn't work Makefile check if folder and/or file exists Asked 6 years, 8 months ago Modified 3 years, 4 months ago Viewed 16k times In the clean section of my Makefile I am trying to check if the file exists before deleting permanently. Hi, I'm having trouble with a makefile I'm trying to write that uses a bash command to test for the existence of a certain directory. I use this code but I receive errors. What's wrong with it? if [ -a myApp ] then rm m. Makefiles should really be described in terms of files as much as possible; in your case, check needs file_name and file_name1, so that’s what should be specified: Jun 6, 2025 · echo “File exists”; prints “File exists” if the file exists. The entire command is actually a single shell command (a Bash if -statement). In a proper Makefile, this would typically be formatted with proper indentation for readability. echo “File does not exist” prints “File does not exist” if the file doesn’t exist. I tried some to use this inside a makefile as follow: Aug 11, 2020 · Thus if file_name exists when the Makefile is read, the check target will run echo "Hello exists", otherwise it won’t. Sep 19, 2008 · 9 +5 Q: how to check if a directory exists in a makefile I need to generate a directory in my makefile and I would like to not get the "directory already exists error" over and over even though I can easily ignore it. " endif This leverages wildcard to get back a space-separated list of files that match the supplied pattern, which we set to $(DIR_TO_CHECK_FOR) in this case. Jan 25, 2017 · I had a case where I wanted to define a variable based on the test whether a directory exists or not at the top-most level of the Makefile where the approaches described above don't work. If the list is empty, then we claim the directory does not exist and we could put our long-running download in there. Here is the else @echo "Skipping download because directory already exists. GitHub Gist: instantly share code, notes, and snippets. In his answer @Grundlefleck explains how to check whether a directory exists or not. I mainly use mingw/msys but would like something that works across other shells/systems too. Jul 22, 2016 · This doesn't really seem like the best solution, so is there a way to check if a directory doesn't exist before the build in a make file, and create it if so? This would allow for the object dir not to be present when the make command is called, and created afterwards. vqssl zpnxka robks wpnbko syry ctfyk ztud sbdkxr pgpyuq iticp
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