diff --git a/perl-5.12.1-norebuilds.patch b/perl-5.12.1-norebuilds.patch
new file mode 100644
index 0000000..5a0fdc6
--- /dev/null
+++ b/perl-5.12.1-norebuilds.patch
@@ -0,0 +1,24 @@
+diff -ru perl-5.12.1/config_h.SH perl-5.12.1-norebuilds/config_h.SH
+--- perl-5.12.1/config_h.SH	2010-05-14 00:01:07.000000000 +0200
++++ perl-5.12.1-norebuilds/config_h.SH	2013-03-01 17:05:22.845608318 +0100
+@@ -968,7 +968,7 @@
+  *	feature tests from Configure are generally more reliable.
+  */
+ #define OSNAME "$osname"		/**/
+-#define OSVERS "$osvers"		/**/
++#define OSVERS "3.0"		/**/
+ 
+ /* ARCHLIB:
+  *	This variable, if defined, holds the name of the directory in
+diff -ru perl-5.12.1/cpan/Devel-PPPort/parts/ppptools.pl perl-5.12.1-norebuilds/cpan/Devel-PPPort/parts/ppptools.pl
+--- perl-5.12.1/cpan/Devel-PPPort/parts/ppptools.pl	2010-04-26 10:08:29.000000000 +0200
++++ perl-5.12.1-norebuilds/cpan/Devel-PPPort/parts/ppptools.pl	2013-03-01 17:09:01.134007016 +0100
+@@ -31,7 +31,7 @@
+   local *DIR;
+ 
+   opendir DIR, $dir or die "cannot open directory $dir: $!\n";
+-  my @files = grep { !-d && !/^\./ } readdir DIR;  # no dirs or hidden files
++  my @files = sort grep { !-d && !/^\./ } readdir DIR;  # no dirs or hidden files
+   closedir DIR;
+ 
+   return map { cat_file($dir, $_) } @files;
diff --git a/perl.changes b/perl.changes
index 7c873ee..38e71e9 100644
--- a/perl.changes
+++ b/perl.changes
@@ -1,3 +1,6 @@
+* Fri Mar 01 2013 Carsten Munk <carsten.munk@jollamobile.com> - 5.12.1
+- Stop perl from rebuilding constantly, again.
+
 * Tue Jan 22 2013 Oleg Girko <ol+mer@infoserver.ru> - 5.12.1
 - Use newly built perl instead of installed one to edit patchlevel.h.
 
diff --git a/perl.spec b/perl.spec
index 97418b8..1db31bd 100644
--- a/perl.spec
+++ b/perl.spec
@@ -54,6 +54,8 @@ Patch7:        perl-5.10.0-x86_64-io-test-failure.patch
 
 Patch8:	       perl-5.12.1-notimestamps.patch
 
+Patch9:        perl-5.12.1-norebuilds.patch
+
 BuildRoot:      %{_tmppath}/%{name}-%{perl_version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires:  gdbm-devel, db4-devel, zlib-devel
 BuildRequires:  groff
@@ -683,7 +685,7 @@ upstream tarball from perl.org.
 %patch6 -p1
 %patch7 -p1
 %patch8 -p1
-
+%patch9 -p1
 #
 # Candidates for doc recoding (need case by case review):
 # find . -name "*.pod" -o -name "README*" -o -name "*.pm" | xargs file -i | grep charset= | grep -v '\(us-ascii\|utf-8\)'
@@ -782,6 +784,8 @@ make %{?_smp_mflags}
 
 
 %install
+ORIG=$PWD
+
 rm -rf $RPM_BUILD_ROOT
 make install DESTDIR=$RPM_BUILD_ROOT
 
@@ -856,6 +860,8 @@ cd $RPM_BUILD_ROOT%{_libdir}/perl5/%{perl_version}/%{perl_archname}/CORE/
 %ifarch %{multilib_64_archs}
 %{new_perl} -x patchlevel.h 'Fedora Patch3: support for libdir64'
 %endif
+
+cd $ORIG
 rm -rf $RPM_BUILD_ROOT/*.0
 
 %clean