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. Cache the result of this test
ac_cv_file_file variable, with characters not
suitable for a variable name mapped to underscores.
For each file listed in files, execute
and perform either action-if-found or action-if-not-found.
AC_CHECK_FILE, this defines ‘HAVE_file’
(see Standard Symbols) for each file found and caches the results of
each test in the
ac_cv_file_file variable, with characters
not suitable for a variable name mapped to underscores.