iptables: Split the iptables modules into separate packages

By splitting the iptables modules into separate packages it is
possible to pick and choose the modules to install and thereby reduce
the total size of the installed modules.

Backwards compatibility is maintained by adding a recommendation of
iptables-modules, which is a meta package that depends on all the
generated packages.

Signed-off-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>

diff --git a/meta/recipes-extended/iptables/iptables_1.6.2.bb b/meta/recipes-extended/iptables/iptables_1.6.2.bb
index 38a83d2b32360f1622682464158f5e8a8a59c484..e00824f7634e63e440105f61ab0d35b420cde544 100644 (file)
--- a/meta/recipes-extended/iptables/iptables_1.6.2.bb
+++ b/meta/recipes-extended/iptables/iptables_1.6.2.bb
@@ -7,17 +7,6 @@ LICENSE = "GPLv2+"
 LIC_FILES_CHKSUM = "file://COPYING;md5=b234ee4d69f5fce4486a80fdaf4a4263\
                     file://iptables/iptables.c;beginline=13;endline=25;md5=c5cffd09974558cf27d0f763df2a12dc"
 
-RRECOMMENDS_${PN} = "kernel-module-x-tables \
-                     kernel-module-ip-tables \
-                     kernel-module-iptable-filter \
-                     kernel-module-iptable-nat \
-                     kernel-module-nf-defrag-ipv4 \
-                     kernel-module-nf-conntrack \
-                     kernel-module-nf-conntrack-ipv4 \
-                     kernel-module-nf-nat \
-                     kernel-module-ipt-masquerade"
-FILES_${PN} =+ "${libdir}/xtables/ ${datadir}/xtables"
-
 SRC_URI = "http://netfilter.org/projects/iptables/files/iptables-${PV}.tar.bz2 \
            file://0001-configure-Add-option-to-enable-disable-libnfnetlink.patch \
            file://0002-configure.ac-only-check-conntrack-when-libnfnetlink-enabled.patch \
@@ -28,8 +17,8 @@ SRC_URI[sha256sum] = "55d02dfa46263343a401f297d44190f2a3e5113c8933946f094ed40237
 
 inherit autotools pkgconfig
 
-EXTRA_OECONF = "--with-kernel=${STAGING_INCDIR} \
-               "
+EXTRA_OECONF = "--with-kernel=${STAGING_INCDIR}"
+
 PACKAGECONFIG ?= "${@bb.utils.filter('DISTRO_FEATURES', 'ipv6', d)}"
 
 PACKAGECONFIG[ipv6] = "--enable-ipv6,--disable-ipv6,"
@@ -45,3 +34,31 @@ do_configure_prepend() {
        # Keep ax_check_linker_flags.m4 which belongs to autoconf-archive.
        rm -f libtool.m4 lt~obsolete.m4 ltoptions.m4 ltsugar.m4 ltversion.m4
 }
+
+PACKAGES += "${PN}-modules"
+PACKAGES_DYNAMIC += "^${PN}-module-.*"
+
+python populate_packages_prepend() {
+    modules = do_split_packages(d, '${libdir}/xtables', 'lib(.*)\.so$', '${PN}-module-%s', '${PN} module %s', extra_depends='')
+    if modules:
+        metapkg = d.getVar('PN') + '-modules'
+        d.appendVar('RDEPENDS_' + metapkg, ' ' + ' '.join(modules))
+}
+
+FILES_${PN} += "${datadir}/xtables"
+
+ALLOW_EMPTY_${PN}-modules = "1"
+
+RDEPENDS_${PN} = "${PN}-module-xt-standard"
+RRECOMMENDS_${PN} = " \
+    ${PN}-modules \
+    kernel-module-x-tables \
+    kernel-module-ip-tables \
+    kernel-module-iptable-filter \
+    kernel-module-iptable-nat \
+    kernel-module-nf-defrag-ipv4 \
+    kernel-module-nf-conntrack \
+    kernel-module-nf-conntrack-ipv4 \
+    kernel-module-nf-nat \
+    kernel-module-ipt-masquerade \
+"