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AX_PATH_MISSING(VARIABLE, PROG-TO-CHECK-FOR, WARNING-IF-NOT-FOUND,
PATH)
Check whether program PROG-TO-CHECK-FOR exists in path. If it is found, set VARIABLE to the full path of PROG-TO-CHECK-FOR, otherwise warn using the string WARNING-IF-NOT-FOUND and set VARIABLE to the full path of the Automake missing script with PROG-TO-CHECK-FOR as the command to run.
A typical use is the following:
AX_PATH_MISSING([AUTOGEN],[autogen],[autogen seems missing ...])
This macro is the combination of AC_PATH_PROG and AX_MISSING_PROG. If you do not want to run AC_PATH_PROG, simply use AX_MISSING_PROG or AM_MISSING.
Noah Slater <nslater@bytesexual.org> and Francesco Salvestrini <salvestrini@sourceforge.net>.
2008-04-12
AC_DEFUN([AX_PATH_MISSING], [ AC_PATH_PROG([$1],[$2],[$4]) AS_IF([ test -z "${$1}" ],[ unset $1 AX_MISSING_PROG([$1],[$2],[$3]) ]) ])
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