check for correct make version ( thanks to Thomas )

SVN-Revision: 14727

scripts/feeds

@@ -15,6 +15,14 @@ my $mk=`which gmake`;	# select the right 'make' program
 chomp($mk);		# trim trailing newline
 $mk or $mk = "make";	# default to 'make'
 
+# check version of make
+my @mkver = split /\s+/, `$mk -v`, 4;
+my $valid_mk = 1;
+$mkver[0] =~ /^GNU/ or $valid_mk = 0;
+$mkver[1] =~ /^Make/ or $valid_mk = 0;
+$mkver[2] >= "3.81" or $valid_mk = 0;
+$valid_mk or die "Unsupported version of make found: $mk\n";
+
 my @feeds;
 my %build_packages;
 my %installed;