记录一下, 在gentoo中编译内核支持usb及蓝牙, 方便使用蓝牙鼠标的过程.

1. 完善内核对udev的支持, 下面带*号的都保证选中状态, 并保证/etc/portage/make.conf的USE中有udevflag

    General setup  --->
        [*] Configure standard kernel features (expert users)  --->
            [ ] Enable deprecated sysfs features to support old userspace tools
            [*] Enable signalfd() system call
    Enable the block layer  --->
        [*] Block layer SG support v4
    Networking support  --->
        Networking options  --->
            <*> Unix domain sockets
    Device Drivers  --->
        Generic Driver Options  --->
            ()  path to uevent helper
            [*] Maintain a devtmpfs filesystem to mount at /dev
        < > ATA/ATAPI/MFM/RLL support (DEPRECATED)  --->
    File systems  --->
        [*] Inotify support for userspace
        Pseudo filesystems --->
            [*] /proc file system support
            [*] sysfs file system support
   

2. 完善内核对USB的支持, 下面带*号的都会员证选中状态. 并保证/etc/portage/make.conf的USE中有usbflag

    Device Drivers --->
        [*] USB support  --->
            <*>   Support for Host-side USB
   
            Select a USB HCI driver, e.g.:
            <*> xHCI HCD (USB 3.0) support (xhci-hcd)
            <*> EHCI HCD (USB 2.0) support (ehci-hcd)
            <*> OHCI HCD support (ohci-hcd)
            <*> UHCI HCD (most Intel and VIA) support (uhci-hcd)
   

3. 更新一下已安装的软件的包, 使得新的USE标记生效

    emerge --ask --changed-use --deep @world
   

4. 保证sys-apps/usbutils已经安装

    emerge --ask usbutils
   

5. 完善内核对bluetooth的支持, 并保证/etc/portage/make.conf的USE中有bluetoothflag

    [*] Networking support --->
          <*>   Bluetooth subsystem support --->
                  <*>   RFCOMM protocol support
                  [ ]     RFCOMM TTY support
                  < >   BNEP protocol support
                  [ ]     Multicast filter support
                  [ ]     Protocol filter support
                  <*>   HIDP protocol support
                        Bluetooth device drivers --->
                          <*> HCI USB driver
                          <*> HCI UART driver
          <*>   RF switch subsystem support --->
   

6. 安装net-wireless/bluez

    emerge --ask --noreplace net-wireless/bluez
   

7. 保证用户在plugdev用户组中

    gpasswd -a $USER plugdev
   

8. 设置蓝牙服务开机启动

    rc-update add bluetooth default
   

9. 重启系统后, 使用hciconfig -a可以查看到蓝牙的信息. 如果蓝牙没有启动的话, 使用如下命令进行启动激活.

    hciconfig hci0 up
   

   hci0是使用hciconfig -a得到的interface的名字, 就像ifconfig中的eth0一样

10. 如果希望不用每次都使用hciconfig -a命令进行激活的话, 可以在/etc/udev/rules.d/90-bluetooth.rules中添加如下内容

    # Enable the Bluetooth controller
    
    # BlueZ 5
    ACTION=="add", KERNEL=="hci0", TEST=="/usr/bin/hciconfig", RUN+="/usr/bin/hciconfig hci0 up"
    

然后就可以使用bluetoothctl进入蓝牙的命令行界面, 进行配对连接等操作了. http://wiki.gentoo.org/wiki/Bluetooth#BlueZ_5