X-Git-Url: http://git.jankratochvil.net/?p=macros.git;a=blobdiff_plain;f=AutoGen.pm;h=cad8cbfc45a4ebf57580cbb919cb44bb713c0221;hp=796733ed6c5593f7b263c489f1f2318c20bf2b49;hb=6c5a7edbfb5b833d42f0b9c4c4844ca366f32025;hpb=be11781b7d5174124c299671ed0413bd9b0e06cf

diff --git a/AutoGen.pm b/AutoGen.pm
index 796733e..cad8cbf 100644
--- a/AutoGen.pm
+++ b/AutoGen.pm
@@ -63,6 +63,23 @@ Supported parameters:
 '.($Options{"help"} || "");
 }
 
+sub checkcommandversion
+{
+my($class,$command,$version)=@_;
+
+	local *F;
+	do { open F,$_ or confess "Open $_: $!"; } for ("$command --version|");
+	local $/;
+	undef $/;
+	my $command_out=<F>;
+	close F;
+	my $command_version=($command_out=~m#([\d.]+)#)[0];
+	confess "$command(1) version not found in its output" if !$command_version;
+	confess "'$command' version $version or higher required"
+			# Do not take 3rd+ numbers as it would not be a number
+			if ($command_version=~/^(\d+[.]\d+)/)[0]<$version;
+}
+
 sub _readfile
 {
 my($filename)=@_;