PolarDB-for-PostgreSQL

1
# ===========================================================================
2
#   https://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 8
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
78