[Buildroot] [RFC v1] Rework of RPC support to handle glibc >= 2.14 and libtirpc
Thomas Petazzoni
thomas.petazzoni at free-electrons.com
Sat Aug 11 17:40:32 UTC 2012
Hello,
This set of patches reworks the RPC support to take into account newer
glibc versions that do not provide RPC support. This is still a work
in progress and this version is a RFC only.
In order to help in the review, here is a step by step description of
what is being done:
* Patch 1 changes uclibc.mk to use the BR2_TOOLCHAIN_BUILDROOT_*
options instead of directly BR2_LARGEFILE/BR2_INET_IPV6, etc. This
is not strictly needed, but since BR2_INET_RPC is going to be
renamed in later patches, it helps to use BR2_TOOLCHAIN_BUILDROOT_*
everywhere. It is also more logical since the
BR2_TOOLCHAIN_BUILDROOT_* options are defined by the internal
Buildroot toolchain backend, so it makes sense to use those options
in uclibc.mk which is part of this toolchain backend.
* Patch 2 does the same thing but for the Crosstool-NG toolchain
backend.
* Patch 3 makes a naive rename BR2_INET_RPC to
BR2_TOOLCHAIN_HAS_NATIVE_RPC. This name better describes what it
means: whether the toolchain has or does not have RPC support (the
RPC support will later have the capability of being provided by
libtirpc, outside of the toolchain).
* Patch 4 enhance the external toolchain logic around the RPC
support. Basically, the BR2_TOOLCHAIN_EXTERNAL_GLIBC option no
longer unconditionally selects BR2_TOOLCHAIN_HAS_NATIVE_RPC since
there are glibc toolchains that don't have RPC support. All the
predefined toolchain profiles are updated to take into account this
change: for the moment, all glibc toolchains that have pre-defined
toolchains have RPC support, but further patches in the series add
pre-defined glibc toolchains that don't have RPC support. In the
case of custom glibc toolchains, a question is asked to the user so
that he can say whether the external glibc toolchain has RPC
support or not. The validity of this configuration option is
checked by the new check_glibc_rpc_feature function in helpers.mk.
* Patch 5 adds a package for libtirpc, with a bunch of patches to
make its compilation work properly on top of uClibc.
What is worth noting is that the libtirpc package is only available
if the toolchain does not have RPC support. We for now assume that
the user will want to use the internal RPC support of the toolchain
if available rather than libtirpc. Note that this choice may be
changed in the future, as the RPC support in libtirpc may have more
features than the one provided by the toolchain.
The other thing that this package Config.in file provides is the
BR2_RPC_SUPPORT_AVAILABLE option, which tells whether the toolchain
has RPC support *OR* libtirpc is enabled. Packages needing RPC
support can therefore "depends on" this.
* Patch 6 adjust the Busybox build process to use libtirpc if
available. We do not 'select' libtirpc if the RPC support is not
available in the toolchain, as we don't want a simple program such
as Busybox to carry dependencies without the user noticing.
* Patch 7 converts netkitbase to the generic package
infrastructure. I initially did that before adding support to build
netkitbase against libtirpc, but it doesn't work, and since
netkitbase is deprecated, I don't think it's worth spending time on
making it work with libtirpc: netkitbase will remain unavailable
for toolchains that don't have RPC support.
* Patch 8, no special comment. The netkitbase package will be removed
in a future release.
* Patch 9, same story as patch 7.
* Patch 10, same story as patch 8.
* Patch 11 makes it possible to link lmbench against
libtirpc. Nothing special to mention here.
* Patch 12 makes it possible to link nfs-utils against libtirpc. The
only thing worth mentionning is that I removed the select on
BR2_PACKAGE_PORTMAP. This select was not a build-time dependency,
but a run-time dependency, and nowadays, nfs-utils can work
together with rpcbind rather than portmap (which is deprecated).
* Patch 13 adds a package for rpcbind, the modern replacement for
portmap. This package directly selects libtirpc. Question: how
should it behave with toolchains having internal RPC support?
* Patch 14 adds a small comment in portmap saying that rpcbind is the
newer replacement. Portmap doesn't link properly against libtirpc,
and it probably isn't worth fixing it. Question: should I mark
portmap as deprecated?
* Patch 15 makes it possible to link quota against libtirpc. Nothing
special to mention here.
* Patch 16 changes how the --with-sys-quotas option is handled by
Samba. This option does not depend on RPC support in the toolchain
apparently.
* Patch 17 makes it possible to link xinetd against libtirpc. Nothing
special to mention here.
* Patches 18-20 add the latest Sourcery CodeBench toolchain for ARM,
x86 and SH4. Those glibc toolchains use glibc 2.15 and therefore do
not have RPC support.
Comments, testing, etc. welcome.
Thanks!
Thomas
The following changes since commit 69bd4566611f2fa2b3cde86b121a3b846a5ab1a5:
package/crosstool-ng: update to 1.16.0 (2012-08-06 14:56:08 +0200)
are available in the git repository at:
git://git.free-electrons.com/users/thomas-petazzoni/buildroot.git for-2012.11/rpc-support
for you to fetch changes up to d7731ad73ed06ae83273de4ba302bdaa5d791943:
external-toolchain: add Sourcery CodeBench ARM 2012.03 (2012-08-11 19:38:17 +0200)
----------------------------------------------------------------
Fabio Porcedda (1):
external-toolchain: add Sourcery CodeBench ARM 2012.03
Thomas Petazzoni (19):
uClibc: use the Buildroot toolchain options instead of the hidden common options
toolchain-crosstool-ng: use the Crosstool-ng config options instead of the common hidden ones
Rename BR2_INET_RPC to BR2_TOOLCHAIN_HAS_NATIVE_RPC
toolchain-external: improve glibc support to test availability of RPC
libtirpc: new package
busybox: add support to link against libtirpc when available
netkitbase: convert to the generic-package infrastructure
netkitbase: mark as deprecated
netkittelnet: convert to generic-package infrastructure
netkittelnet: mark as deprecated
lmbench: add support to use libtirpc when available
nfs-utils: add support to use RPC support from libtirpc
rpcbind: new package
portmap: mention that rpcbind is the project that superseds portmap
quota: add support to use RPC support from libtirpc
samba: unconditionally enable --with-sys-quotas
xinetd: add support to use RPC support from libtirpc
toolchain-external: add Sourcery CodeBench SuperH 2012.03
toolchain-external: add Sourcery CodeBench x86 2012.03
package/Config.in | 2 +
package/busybox/busybox.mk | 20 +++-
package/libtirpc/Config.in | 12 ++
...able-parts-of-TIRPC-requiring-NIS-support.patch | 70 ++++++++++++
...out-RPC-support-does-not-install-rpcent.h.patch | 26 +++++
...btirpc-0003-Add-missing-INET6-conditional.patch | 60 ++++++++++
.../libtirpc-0004-Make-IPv6-support-optional.patch | 43 ++++++++
package/libtirpc/libtirpc.mk | 17 +++
package/lmbench/Config.in | 6 +-
package/lmbench/lmbench.mk | 11 +-
package/netkitbase/Config.in | 5 +-
package/netkitbase/netkitbase.mk | 79 ++++----------
package/netkittelnet/Config.in | 5 +-
package/netkittelnet/netkittelnet.mk | 80 ++++----------
package/netkittelnet/netkittelnet.patch | 2 +-
package/nfs-utils/Config.in | 7 +-
package/nfs-utils/nfs-utils.mk | 8 +-
package/portmap/Config.in | 6 +-
package/quota/Config.in | 6 +-
package/quota/quota.mk | 13 ++-
package/rpcbind/Config.in | 6 +
package/rpcbind/rpcbind-01-no-yp-support.patch | 46 ++++++++
package/rpcbind/rpcbind.mk | 17 +++
package/samba/samba.mk | 2 +-
package/xinetd/xinetd.mk | 14 ++-
toolchain/helpers.mk | 29 ++++-
toolchain/toolchain-buildroot/Config.in.2 | 2 +-
toolchain/toolchain-common.in | 2 +-
toolchain/toolchain-crosstool-ng/Config.in | 10 +-
toolchain/toolchain-crosstool-ng/crosstool-ng.mk | 10 +-
toolchain/toolchain-external/Config.in | 115 +++++++++++++++++---
toolchain/toolchain-external/ext-tool.mk | 17 ++-
toolchain/uClibc/uclibc.mk | 10 +-
33 files changed, 574 insertions(+), 184 deletions(-)
create mode 100644 package/libtirpc/Config.in
create mode 100644 package/libtirpc/libtirpc-0001-Disable-parts-of-TIRPC-requiring-NIS-support.patch
create mode 100644 package/libtirpc/libtirpc-0002-uClibc-without-RPC-support-does-not-install-rpcent.h.patch
create mode 100644 package/libtirpc/libtirpc-0003-Add-missing-INET6-conditional.patch
create mode 100644 package/libtirpc/libtirpc-0004-Make-IPv6-support-optional.patch
create mode 100644 package/libtirpc/libtirpc.mk
create mode 100644 package/rpcbind/Config.in
create mode 100644 package/rpcbind/rpcbind-01-no-yp-support.patch
create mode 100644 package/rpcbind/rpcbind.mk
Thanks,
--
Thomas Petazzoni
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