如何在 CentOS 7 上构建内核反向移植？

Question

我在 2015 年初使用 Broadcom BCM43602 wifi 芯片在 Macbook Pro 上安装了 CentOS 7。我已经通过挖掘有关 wifi 设置的 CentOS 文档尝试了所有其他方法。我终于意识到一个潜在的解决方案是为brcmfmac 内核模块编译反向端口。

运行内核

Linux centos7.localdomain 3.10.0-327.13.1.el7.x86_64 #1 SMP Thu Mar 31 16:04:38 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

我做了什么

• 从https://www.kernel.org/pub/linux/kernel/projects/backports/stable/ 下载并解压后端口
• 读取反向端口documentation

• 跑make defconfig-brcmfmac

• 运行 make 并遇到错误。

下面的命令和输出日志。

[admin@centos7 backports-4.0.1-1]$ make mrproper
  CLEAN   /home/admin/Documents/backports-4.0.1-1/.tmp_versions
[admin@centos7 backports-4.0.1-1]$ make defconfigs-brcmfmac
Generating local configuration database from kernel ... done.
make[1]: *** No rule to make target `defconfigs-brcmfmac'.  Stop.
make: *** [defconfigs-brcmfmac] Error 2
[admin@centos7 backports-4.0.1-1]$ make defconfig-brcmfmac
cc -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer   -c -o conf.o conf.c
cc -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer   -c -o zconf.tab.o zconf.tab.c
cc   conf.o zconf.tab.o   -o conf
boolean symbol HWMON tested for 'm'? test forced to 'n'
boolean symbol HWMON tested for 'm'? test forced to 'n'
#
# configuration written to .config
#
[admin@centos7 backports-4.0.1-1]$ make
make[5]: `conf' is up to date.
boolean symbol HWMON tested for 'm'? test forced to 'n'
boolean symbol HWMON tested for 'm'? test forced to 'n'
#
# configuration written to .config
#
Building backport-include/backport/autoconf.h ... done.
  CC [M]  /home/admin/Documents/backports-4.0.1-1/compat/main.o
In file included from include/linux/rcupdate.h:43:0,
                 from /home/admin/Documents/backports-4.0.1-1/backport-include/linux/rcupdate.h:3,
                 from include/linux/srcu.h:33,
                 from include/linux/notifier.h:15,
                 from include/linux/memory_hotplug.h:6,
                 from include/linux/mmzone.h:824,
                 from include/linux/gfp.h:5,
                 from include/linux/kmod.h:22,
                 from include/linux/module.h:13,
                 from /home/admin/Documents/backports-4.0.1-1/backport-include/linux/module.h:3,
                 from /home/admin/Documents/backports-4.0.1-1/compat/main.c:1:
/home/admin/Documents/backports-4.0.1-1/backport-include/linux/completion.h:14:20: error: redefinition of ‘reinit_completion’
 static inline void reinit_completion(struct completion *x)
                    ^
In file included from /home/admin/Documents/backports-4.0.1-1/backport-include/linux/completion.h:3:0,
                 from include/linux/rcupdate.h:43,
                 from /home/admin/Documents/backports-4.0.1-1/backport-include/linux/rcupdate.h:3,
                 from include/linux/srcu.h:33,
                 from include/linux/notifier.h:15,
                 from include/linux/memory_hotplug.h:6,
                 from include/linux/mmzone.h:824,
                 from include/linux/gfp.h:5,
                 from include/linux/kmod.h:22,
                 from include/linux/module.h:13,
                 from /home/admin/Documents/backports-4.0.1-1/backport-include/linux/module.h:3,
                 from /home/admin/Documents/backports-4.0.1-1/compat/main.c:1:
include/linux/completion.h:86:20: note: previous definition of ‘reinit_completion’ was here
 static inline void reinit_completion(struct completion *x)
                    ^
make[6]: *** [/home/admin/Documents/backports-4.0.1-1/compat/main.o] Error 1
make[5]: *** [/home/admin/Documents/backports-4.0.1-1/compat] Error 2
make[4]: *** [_module_/home/admin/Documents/backports-4.0.1-1] Error 2
make[3]: *** [modules] Error 2
make[2]: *** [modules] Error 2
make[1]: *** [modules] Error 2
make: *** [default] Error 2

我在这里缺少什么？

Answer 1

4.0.1?

centos 7 基于 3.10 内核，除了 Red Hat 应用了大量自定义补丁并且代码库已经与上游 3.10 不同。由于运气和/或 kabi 保证，上游补丁有可能无论如何都会起作用。

但真正的问题是你为什么要在桌面匹配器上使用 centos 7。如果你想使用绑定到 red hat 的发行版，你可以试试 fedora。否则试试 ubuntu。