new dual version

Create dual ebuild for automake-1.4x and automake-1.6x.  Have the
same autodetection as autoconf-1.53, check am-wrapper.pl for details.

1 files changed, 52 insertions, 0 deletions

diff --git a/am-wrapper.pl b/am-wrapper.pl
new file mode 100755
index 0000000..70f2d90
--- /dev/null
+++ b/am-wrapper.pl
@@ -0,0 +1,52 @@
+#!/usr/bin/perl
+#
+#
+# Guillaume Cottenceau (gc@mandrakesoft.com)
+#
+# Copyright 2001 MandrakeSoft
+#
+# This software may be freely redistributed under the terms of the GNU
+# public license.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+#
+# Executes the correct autoconf version.
+#
+# - defaults to automake-1.4
+# - runs automake-1.6x if it exists and...
+#   - envvar WANT_AUTOMAKE_1_6 is set to `1'
+#     -or-
+#   - configure.ac is present
+#     -or-
+#   - `configure.in' contains AC_PREREQ and the value's 3 first letters
+#     are stringwise greater than '2.1'
+#
+
+#use MDK::Common;
+
+sub cat_ { local *F; open F, $_[0] or return; my @l = <F>; wantarray ? @l : join '', @l }
+
+my $binary     = "$0-1.4";
+my $binary_new = "$0-1.6x";
+
+if (!$ENV{WANT_AUTOMAKE_1_4}) {
+    if (-x $binary_new                  # user may have only 2.13
+	&& ($ENV{WANT_AUTOMAKE_1_6}
+	    || -r 'configure.ac'
+	    || (cat_('configure.in') =~ /^\s*AC_PREREQ\(([^\)]{3})[^\)]*\)/m ? $1 : '') gt '2.1' 
+	    || (cat_('aclocal.m4') =~ /^\s*AC_PREREQ\(([^\)]{3})[^\)]*\)/m ? $1 : '') gt '2.1')) {
+	$ENV{WANT_AUTOMAKE_1_6} = 1;    # to prevent further "cats" and to enhance consistency (possible cwd etc)
+	$binary 		= $binary_new;
+    } else {
+	$ENV{WANT_AUTOMAKE_1_4} = 1;    # for further consistency
+    }
+}
+
+$ENV{WANT_AMWRAPPER_DEBUG} and print STDERR "am-wrapper: will execute <$binary>\n";
+
+exec $binary, @ARGV;
+
+die "am-wrapper: ouch, couldn't call binary ($binary).\n";