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# | # |
# Executes the correct autoconf version. | # Executes the correct autoconf version. |
# | # |
# - defaults to autoconf-2.13 |
# - defaults to autoconf-2.5x |
# - runs autoconf-2.5x if it exists and... |
# - runs autoconf-2.13 if it exists and... |
# - envvar WANT_AUTOCONF is set to `2.5' |
# - envvar WANT_AUTOCONF is set to `2.1' |
# -or- | # -or- |
# - configure.ac is present |
# - `configure.in' contains AC_PREREQ and the value's 2 first letters |
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# are stringwise equal to '2.1' |
# -or- | # -or- |
# - `configure.in' contains AC_PREREQ and the value's 3 first letters |
# - `configure' is already present and was generated by autoconf equal to |
# are stringwise greater than '2.13' |
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# -or- |
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# - `configure' is already present and was generated by autoconf greater than |
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# '2.13' | # '2.13' |
# -or- |
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# - `Makefile.in' was generated by automake-1.6 or superior, which |
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# specifically needs autoconf-2.5x |
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# | # |
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#use MDK::Common; | #use MDK::Common; |
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sub cat_ { local *F; open F, $_[0] or return; my @l = <F>; wantarray ? @l : join '', @l } | sub cat_ { local *F; open F, $_[0] or return; my @l = <F>; wantarray ? @l : join '', @l } |
sub ac_version { | sub ac_version { |
return ((@versions = cat_(shift) =~ /^\s*\[?AC_PREREQ\(\[?([^\)]{3}[0-9]?)[^\)]*\]?\)/mg) ? ((sort @versions)[-1]) : ''); |
return ((@versions = cat_(shift) =~ /^\s*\[?AC_PREREQ\(\[?([^\)]{2}[0-9]?)[^\)]*\]?\)/mg) ? ((sort @versions)[-1]) : ''); |
} | } |
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my $binary = "$0-2.13"; |
my $binary_old = "$0-2.13"; |
my $binary_new = "$0-2.5x"; |
my $binary = "$0-2.5x"; |
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# Autoconf is really getting out of hand, so rather start supporting | # Autoconf is really getting out of hand, so rather start supporting |
# WANT_AUTOCONF = "2.5" the like. Unfortunately it override the old | # WANT_AUTOCONF = "2.5" the like. Unfortunately it override the old |
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} | } |
} | } |
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if ($ENV{WANT_AUTOCONF} ne '2.1') { |
if ($ENV{WANT_AUTOCONF} ne '2.5') { |
if ((! -x $binary) # handle stuff like autom4te, where only 2.5x have the binary |
if ((-x $binary_old |
|| (-x $binary_new # user may have only 2.13 |
&& (($ENV{WANT_AUTOCONF} eq '2.1') |
&& (($ENV{WANT_AUTOCONF} eq '2.5') |
|| ac_version('configure.in') eq '2.1' |
|| -r 'configure.ac' |
|| (cat_('configure') =~ /^# Generated automatically using autoconf version (\S+)/m ? $1 : '') eq '2.13' |
|| ac_version('configure.in') gt '2.13' |
|| ac_version('aclocal.m4') eq '2.1'))) { |
|| (cat_('configure') =~ /^# Generated by Autoconf (\S+)/m ? $1 : '') gt '2.13' |
$ENV{WANT_AUTOCONF} = '2.1'; # to prevent further "cats" and to enhance consistency (possible cwd etc) |
|| (cat_('Makefile.in') =~ /^# Makefile\.in generated by automake (\S+)/ ? $1 : '') ge '1.6' |
$binary = $binary_old; |
|| ac_version('aclocal.m4') gt '2.13'))) { |
} else { |
$ENV{WANT_AUTOCONF} = '2.5'; # to prevent further "cats" and to enhance consistency (possible cwd etc) |
$ENV{WANT_AUTOCONF} = '2.5'; # for further consistency |
$binary = $binary_new; |
} |
} else { |
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$ENV{WANT_AUTOCONF} = '2.1'; # for further consistency |
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} |
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} | } |
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# Set AUTOM4TE to the proper version (bug #40983). | # Set AUTOM4TE to the proper version (bug #40983). |
