m4/ax_prog_perl_modules.m4

   1 # ===========================================================================
   2 #   http://www.gnu.org/software/autoconf-archive/ax_prog_perl_modules.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_PROG_PERL_MODULES([MODULES], [ACTION-IF-TRUE], [ACTION-IF-FALSE])
   8 #
   9 # DESCRIPTION
  10 #
  11 #   Checks to see if the given perl modules are available. If true the shell
  12 #   commands in ACTION-IF-TRUE are executed. If not the shell commands in
  13 #   ACTION-IF-FALSE are run. Note if $PERL is not set (for example by
  14 #   calling AC_CHECK_PROG, or AC_PATH_PROG), AC_CHECK_PROG(PERL, perl, perl)
  15 #   will be run.
  16 #
  17 #   MODULES is a space separated list of module names. To check for a
  18 #   minimum version of a module, append the version number to the module
  19 #   name, separated by an equals sign.
  20 #
  21 #   Example:
  22 #
  23 #     AX_PROG_PERL_MODULES( Text::Wrap Net::LDAP=1.0.3, ,
  24 #                           AC_MSG_WARN(Need some Perl modules)
  25 #
  26 # LICENSE
  27 #
  28 #   Copyright (c) 2009 Dean Povey <povey@wedgetail.com>
  29 #
  30 #   Copying and distribution of this file, with or without modification, are
  31 #   permitted in any medium without royalty provided the copyright notice
  32 #   and this notice are preserved. This file is offered as-is, without any
  33 #   warranty.
  34
  35 #serial 7
  36
  37 AU_ALIAS([AC_PROG_PERL_MODULES], [AX_PROG_PERL_MODULES])
  38 AC_DEFUN([AX_PROG_PERL_MODULES],[dnl
  39
  40 m4_define([ax_perl_modules])
  41 m4_foreach([ax_perl_module], m4_split(m4_normalize([$1])),
  42           [
  43            m4_append([ax_perl_modules],
  44                      [']m4_bpatsubst(ax_perl_module,=,[ ])[' ])
  45           ])
  46
  47 # Make sure we have perl
  48 if test -z "$PERL"; then
  49 AC_CHECK_PROG(PERL,perl,perl)
  50 fi
  51
  52 if test "x$PERL" != x; then
  53   ax_perl_modules_failed=0
  54   for ax_perl_module in ax_perl_modules; do
  55     AC_MSG_CHECKING(for perl module $ax_perl_module)
  56
  57     # Would be nice to log result here, but can't rely on autoconf internals
  58     $PERL -e "use $ax_perl_module; exit" > /dev/null 2>&1
  59     if test $? -ne 0; then
  60       AC_MSG_RESULT(no);
  61       ax_perl_modules_failed=1
  62    else
  63       AC_MSG_RESULT(ok);
  64     fi
  65   done
  66
  67   # Run optional shell commands
  68   if test "$ax_perl_modules_failed" = 0; then
  69     :
  70     $2
  71   else
  72     :
  73     $3
  74   fi
  75 else
  76   AC_MSG_WARN(could not find perl)
  77 fi])dnl