68 lines
2.0 KiB
Plaintext
68 lines
2.0 KiB
Plaintext
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# ===========================================================================
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# http://autoconf-archive.cryp.to/ax_prog_perl_version.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_PROG_PERL_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE])
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#
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# DESCRIPTION
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#
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# Makes sure that perl supports the version indicated. If true the shell
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# commands in ACTION-IF-TRUE are executed. If not the shell commands in
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# ACTION-IF-FALSE are run. Note if $PERL is not set (for example by
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# running AC_CHECK_PROG or AC_PATH_PROG),
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#
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# Example:
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#
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# AC_PATH_PROG([PERL],[perl])
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# AC_PROG_PERL_VERSION([5.8.0],[ ... ],[ ... ])
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#
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# This will check to make sure that the perl you have supports at least
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# version 1.6.0.
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#
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# NOTE: This macro uses the $PERL variable to perform the check.
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# AX_WITH_PERL can be used to set that variable prior to running this
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# macro. The $PERL_VERSION variable will be valorized with the detected
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# version.
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#
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# LAST MODIFICATION
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#
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# 2008-04-12
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#
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# COPYLEFT
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#
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# Copyright (c) 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
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#
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# Copying and distribution of this file, with or without modification, are
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# permitted in any medium without royalty provided the copyright notice
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# and this notice are preserved.
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AC_DEFUN([AX_PROG_PERL_VERSION],[
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AC_REQUIRE([AC_PROG_SED])
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AC_REQUIRE([AC_PROG_GREP])
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AS_IF([test -n "$PERL"],[
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ax_perl_version="$1"
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AC_MSG_CHECKING([for perl version])
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changequote(<<,>>)
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perl_version=`$PERL --version 2>&1 | $GREP "This is perl" | $SED -e 's/.* v\([0-9]*\.[0-9]*\.[0-9]*\) .*/\1/'`
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changequote([,])
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AC_MSG_RESULT($perl_version)
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AC_SUBST([PERL_VERSION],[$perl_version])
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AX_COMPARE_VERSION([$ax_perl_version],[le],[$perl_version],[
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:
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$2
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],[
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:
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$3
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])
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],[
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AC_MSG_WARN([could not find the perl interpreter])
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$3
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])
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])
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