Fix build failure on kFreeBSD due to undeclared '__FreeBSD_version',

thanks Steven Chamberlain for the patch. Closes: #788709

debian/changelog

@@ -1,3 +1,10 @@
+libgtop2 (2.30.0-2) UNRELEASED; urgency=medium
+
+  * Fix build failure on kFreeBSD due to undeclared '__FreeBSD_version',
+    thanks Steven Chamberlain for the patch. Closes: #788709
+
+ -- Michael Biebl <biebl@debian.org>  Mon, 15 Jun 2015 21:14:43 +0200
+
 libgtop2 (2.30.0-1) experimental; urgency=medium
 
   [ Jackson Doak ]

debian/patches/04_kfreebsd_version.patch

@@ -0,0 +1,21 @@
+From: Steven Chamberlain <steven@pyro.eu.org>
+Date: Mon, 15 Jun 2015 17:09:49 +0100
+
+Support GNU/kFreeBSD by using __FreeBSD_kernel_version here,
+rather than simply __FreeBSD_version (which is only defined in
+FreeBSD itself).
+
+Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=788709
+--- a/sysdeps/freebsd/open.c
++++ b/sysdeps/freebsd/open.c
+@@ -43,6 +43,10 @@
+ 	server->real_ncpu = ncpus - 1;
+ 	server->ncpu = MIN(GLIBTOP_NCPU - 1, server->real_ncpu);
+ 
++#if defined(__FreeBSD__)
+ 	server->os_version_code = __FreeBSD_version;
++#else
++	server->os_version_code = __FreeBSD_kernel_version;
++#endif
+ 
+ }

debian/patches/series

@@ -1,2 +1,3 @@
 02_hurd_stub_backend.patch
 03_kfreebsd_installdirs.patch
+04_kfreebsd_version.patch