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[Qemu-devel] [PATCH v12 0/8] Shared Library Module Support
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v12 0/8] Shared Library Module Support |
Date: |
Thu, 10 Oct 2013 19:26:08 +0800 |
This series implements feature of shared object building as described in:
http://wiki.qemu.org/Features/Modules
The main idea behind modules is to isolate dependencies on third party
libraries from qemu executables, such as libglusterfs or librbd, so that the
end users can install core qemu package with fewer dependencies. And only for
those who want to use particular modules, need they install qemu-foo
sub-package, which in turn requires libbar and libbiz packages.
It's implemented in three steps:
1. The first patches fix current build system to correctly handle nested
variables and object specific options:
[01/08] ui/Makefile.objs: delete unnecessary cocoa.o dependency
[02/08] make.rule: fix $(obj) to a real relative path
[03/08] rule.mak: allow per object cflags and libs
2. The Makefile changes adds necessary options and rules to build DSO objects:
[04/08] build-sys: introduce common-obj-m and block-obj-m for DSO
3. The next patch adds code to load modules from installed directory:
[05/08] module: implement module loading
A few more changes are following to complete it:
[06/08] Makefile: install modules with "make install"
[07/08] .gitignore: ignore module related files (dll, so, mo)
In the end of series, the block drivers are converted:
[08/08] block: convert block drivers linked with libs to modules
v12: Rebase to current master, no conflict.
Drop "-Wl,--enable-new-tags -Wl,-rpath,'$$ORIGIN'". (Paolo)
v11:
[04] Link DSO with -Wl,--enable-new-dtags -Wl,-rpath,'$$ORIGIN' (Richard)
[05] Reuse module_init_type in module_load, no separate load type enums.
Separate list of modules by type. It's simply list of built modules
now. No whitelist option in configure.
Support multiple module_init() in single module.
v10:
All modules in a single directory (moddir), with module type prefixed:
/usr/lib/qemu/block-{curl,iscsi,...}.so
The module names for user to list in module whitelist is consequently:
block-curl, block-iscsi, ui-*, etc.
In Makfile, the installed module filename is simply generated by:
$(subst /,-,%.so)
Which is also the rule for module names.
[05] Add #undef CONFIG_MODULE_WHITELIST in config-host.h.
Use static array for whitelist. (Richard)
Fam Zheng (7):
make.rule: fix $(obj) to a real relative path
rule.mak: allow per object cflags and libs
build-sys: introduce common-obj-m and block-obj-m for DSO
module: implement module loading
Makefile: install modules with "make install"
.gitignore: ignore module related files (dll, so, mo)
block: convert block drivers linked with libs to modules
Peter Maydell (1):
ui/Makefile.objs: delete unnecessary cocoa.o dependency
.gitignore | 3 ++
Makefile | 30 +++++++++++++-
Makefile.objs | 19 ++-------
Makefile.target | 21 ++++++++--
block/Makefile.objs | 11 +++++-
configure | 76 +++++++++++++++++++++++------------
include/qemu/module.h | 12 ++++++
module-common.c | 10 +++++
rules.mak | 80 +++++++++++++++++++++++++++++++------
scripts/create_config | 14 +++++++
ui/Makefile.objs | 2 -
util/module.c | 107 +++++++++++++++++++++++++++++++++++++++++++++++++-
12 files changed, 320 insertions(+), 65 deletions(-)
create mode 100644 module-common.c
--
1.8.3.1
- [Qemu-devel] [PATCH v12 0/8] Shared Library Module Support,
Fam Zheng <=
- [Qemu-devel] [PATCH v12 1/8] ui/Makefile.objs: delete unnecessary cocoa.o dependency, Fam Zheng, 2013/10/10
- [Qemu-devel] [PATCH v12 2/8] make.rule: fix $(obj) to a real relative path, Fam Zheng, 2013/10/10
- [Qemu-devel] [PATCH v12 3/8] rule.mak: allow per object cflags and libs, Fam Zheng, 2013/10/10
- [Qemu-devel] [PATCH v12 4/8] build-sys: introduce common-obj-m and block-obj-m for DSO, Fam Zheng, 2013/10/10
- [Qemu-devel] [PATCH v12 6/8] Makefile: install modules with "make install", Fam Zheng, 2013/10/10
- [Qemu-devel] [PATCH v12 5/8] module: implement module loading, Fam Zheng, 2013/10/10