linux-kernel - [RFC PATCH 0/5] kbuild: build modules from code in multiple directories.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <152929708853.17463.17302660556961083137.stgit@noble>
Date:   Mon, 18 Jun 2018 14:55:20 +1000
From:   NeilBrown <neilb@...e.com>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michal Marek <michal.lkml@...kovi.net>
Cc:     linux-kernel@...r.kernel.org, linux-kbuild@...r.kernel.org
Subject: [RFC PATCH 0/5] kbuild: build modules from code in multiple
 directories.

This set of patches makes it possible to build a module from
code in multiple directories without needing to list files from one
directory in the Makefile of another directory.

The code was developed for lustre (which is now out-of-tree :-( ) but
can be useful elsewhere, such as for xfs and btrfs and others.

In fs/xfs/Makefile the section:

xfs-y				+= $(addprefix libxfs/, \
				   xfs_ag.o \
				   xfs_alloc.o \
				.....

could become

xfs-y += libxfs/

and then in fs/xfs/libxfs/Makefile we would have

modobj-$(CONFIG_XFS_FS) += xfs_ag.o \
			   xfs_alloc.o \
			   .....

A similar process could move filenames for scrub/* from the
fs/xfs/Makefile to fs/xfs/scrub/Makefile

Apart from improving modularity, this means that partial makes such
as:

  make fs/xfs/libxfs/

or

  make fs/xfs/scrub/attr.s

can work.

Comments and review most welcome.

Thanks,
NeilBrown

---

NeilBrown (5):
      kbuild: detect directories in components of a module.
      kbuild: treat a directory listed in a composite object as foo/mod.a
      kbuild: support building of per-directory mod.a
      kbuild: disable KBUILD_MODNAME when building for mod.a
      kbuild: Add documentation for modobj-m


 Documentation/kbuild/makefiles.txt |   65 ++++++++++++++++++++++++++++++++++--
 scripts/Makefile.build             |   57 ++++++++++++++++++++++----------
 scripts/Makefile.lib               |   63 ++++++++++++++++++++++-------------
 3 files changed, 141 insertions(+), 44 deletions(-)

--
Signature