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AX_WITH_PROG([VARIABLE],[program],[VALUE-IF-NOT-FOUND],[PATH])
Locates an installed program binary, placing the result in the precious variable VARIABLE. Accepts a present VARIABLE, then --with-program, and failing that searches for program in the given path (which defaults to the system path). If program is found, VARIABLE is set to the full path of the binary; if it is not found VARIABLE is set to VALUE-IF-NOT-FOUND if provided, unchanged otherwise.
A typical example could be the following one:
AX_WITH_PROG(PERL,perl)
NOTE: This macro is based upon the original AX_WITH_PYTHON macro from Dustin J. Mitchell <dustin@cs.uchicago.edu>.
http://autoconf-archive.cryp.to/ax_with_prog.m4
Copyright © 2008 Francesco Salvestrini
<salvestrini@users.sourceforge.net>
Copyright © 2008 Dustin J. Mitchell <dustin@cs.uchicago.edu>
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved.