文件操作 - ax_path_missing.m4
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文件: /usr/share/aclocal/ax_path_missing.m4
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# =========================================================================== # https://www.gnu.org/software/autoconf-archive/ax_path_missing.html # =========================================================================== # # SYNOPSIS # # AX_PATH_MISSING(VARIABLE, PROG-TO-CHECK-FOR, WARNING-IF-NOT-FOUND, PATH) # # DESCRIPTION # # 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. # # LICENSE # # Copyright (c) 2008 Noah Slater <nslater@bytesexual.org> # Copyright (c) 2008 Francesco Salvestrini <salvestrini@sourceforge.net> # # 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. This file is offered as-is, without any # warranty. #serial 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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