| dnl ERROR_IF_NO_PROG | |
| dnl A quick / dirty macro to ensure that a required program / executable | |
| dnl is on PATH. If it is not we display an error message using AC_MSG_ERROR. | |
| dnl $1: program name | |
| AC_DEFUN([ERROR_IF_NO_PROG],[ | |
| AC_CHECK_PROG(AS_TR_SH([result_$1]), [$1], [yes], [no]) | |
| AS_VAR_PUSHDEF([result], [result_$1]) | |
| AS_IF([test "x$result" != "xyes"], [ | |
| AC_MSG_ERROR([Missing required program '$1': ensure it is installed and on PATH.]) | |
| ]) | |
| AS_VAR_POPDEF([result]) | |
| ]) |