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You might also need to check for the existence of files. Before using these macros, ask yourself whether a runtime test might not be a better solution. Be aware that, like most Autoconf macros, they test a feature of the host machine, and therefore, they die when cross-compiling.
Check whether file file exists on the native system. If it is found, execute action-if-found, otherwise do action-if-not-found, if given.
Executes
AC_CHECK_FILEonce for each file listed in files. Additionally, defines `HAVE_file' (see Standard Symbols) for each file found.