--- packages/linux/trunk/PKGBUILD	2015-06-30 21:04:16.982818922 +0200
+++ linux-orig/trunk/PKGBUILD	2015-07-05 14:04:12.489200761 +0200
@@ -97,6 +97,17 @@
   make ${MAKEFLAGS} LOCALVERSION= bzImage modules
 }
 
+_common_package() {
+   cd "${srcdir}/${_srcname}"
+
+  KARCH=x86
+
+  # get kernel version
+  _kernver="$(make LOCALVERSION= kernelrelease)"
+  _basekernel=${_kernver%%-*}
+  _basekernel=${_basekernel%.*}
+}
+
 _package() {
   pkgdesc="The ${pkgbase/linux/Linux} kernel and modules"
   [ "${pkgbase}" = "linux" ] && groups=('base')
@@ -108,15 +119,6 @@
   backup=("etc/mkinitcpio.d/${pkgbase}.preset")
   install=linux.install
 
-  cd "${srcdir}/${_srcname}"
-
-  KARCH=x86
-
-  # get kernel version
-  _kernver="$(make LOCALVERSION= kernelrelease)"
-  _basekernel=${_kernver%%-*}
-  _basekernel=${_basekernel%.*}
-
   mkdir -p "${pkgdir}"/{lib/modules,lib/firmware,boot}
   make LOCALVERSION= INSTALL_MOD_PATH="${pkgdir}" modules_install
   cp arch/$KARCH/boot/bzImage "${pkgdir}/boot/vmlinuz-${pkgbase}"
@@ -300,6 +302,7 @@
 for _p in ${pkgname[@]}; do
   eval "package_${_p}() {
     $(declare -f "_package${_p#${pkgbase}}")
+    _common_package
     _package${_p#${pkgbase}}
   }"
 done