Autoconf check for program and fail if not found

Question

I\'m creating a project and using GNU Autoconf tools to do the configuring and making. I\'ve set up all my library checking and header file checking but can\'t seem to figure ou

Answer 1

Similar to the above, but has the advantage of also being able to interact with automake by exporting the condition variable

AC_CHECK_PROG([ffmpeg],[ffmpeg],[yes],[no])
AM_CONDITIONAL([FOUND_FFMPEG], [test "x$ffmpeg" = xyes])
AM_COND_IF([FOUND_FFMPEG],,[AC_MSG_ERROR([required program 'ffmpeg' not found.])])