1 files changed, 11 insertions, 1 deletions
diff --git a/Makefile.PL b/Makefile.PL
index eba032e..93453b0 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -2,12 +2,22 @@ use ExtUtils::MakeMaker;
 # See lib/ExtUtils/MakeMaker.pm for details of how to influence
 # the contents of the Makefile that is written.
 
+my $version = `rpm -q --qf '%{VERSION}\n' rpm`;
+$version =~ /^(?:[4-9]|\d{2})/ or die "unable to build URPM with too old (or undetected) rpm version $version";
+
+#- search for correct libraries to use (above 4.0.3 is right).
+my $libs = $version =~ /^4\.0(?:\.[012])?$/ ?
+    '-lrpm -lrpmio -lpopt -lz -lbz2' : '-lrpm -lrpmio -lrpmdb -lpopt -lz -lbz2';
+my $define = $version =~ /^(?:4\.[2-9]|[5-9]|\d{2})/ ? '-DRPM_42' : '';
+
 WriteMakefile(
     'NAME'      => 'URPM',
+    'CCFLAGS'   => '-Wall',
     'OPTIMIZE'  => '-O3 -fomit-frame-pointer -fno-exceptions -fno-rtti -pipe -s -ffast-math -fexpensive-optimizations',
     'MAKEFILE'  => 'Makefile',
     'OBJECT'    => 'URPM.o',
     'VERSION_FROM'   => 'URPM.pm',
-    'LIBS'      => ['-lrpm -lrpmio -lrpmdb -lpopt -lz -lbz2'],   # e.g., '-lm' 
+    'LIBS'      => [ $libs ],   # e.g., '-lm' 
+    'DEFINE'    => $define,
     'INC'       => '-I/usr/include/rpm',     # e.g., '-I/usr/include/other' 
 );