在pkg-config搜索路径中找不到xkbcommon包。在建立Yocto形象时

Question

论Ubuntu 14.04

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 14.04.3 LTS
Release:    14.04
Codename:   trusty

使用fido分支构建Yocto图像

inherit core-image
IMAGE_FEATURES += "x11-base x11-sato package-management ssh-server-dropbear"
IMAGE_INSTALL += "chromium \
                  lsb \
                  kernel-modules \
                  alsa-utils \

..。我得到了这样的信息

我看上去和铬配方/meta-browser/recipes-browser/chromium/chromium_45.0.2454.85.bb有关，它的开头是这样的

include chromium.inc

DESCRIPTION = "Chromium browser"
DEPENDS += "libgnome-keyring"

我收到这条信息

ERROR: Logfile of failure stored in: /home/joel/yocto/build-fido/tmp/work/cortexa7hf-vfp-vfpv4-neon-poky-linux-gnueabi/chromium/45.0.2454.85-r0/temp/log.do_configure.28622
Log data follows:
| DEBUG: Executing python function sysroot_cleansstate
| DEBUG: Python function sysroot_cleansstate finished
| DEBUG: Executing shell function do_configure
| Updating projects from gyp files...
| Package xkbcommon was not found in the pkg-config search path.
| Perhaps you should add the directory containing `xkbcommon.pc'
| to the PKG_CONFIG_PATH environment variable
| No package 'xkbcommon' found
| gyp: Call to 'pkg-config --cflags xkbcommon' returned exit status 1.
| WARNING: exit code 1 from a shell command.

我试过的

安装了库

$ sudo apt-get install libxkbcommon-x11-dev

搜索xkbcommon.pc

$ apt-file search xkbcommon.pc
libxkbcommon-dev: /usr/lib/x86_64-linux-gnu/pkgconfig/xkbcommon.pc

pkg-config

joel@linux-Lenovo-G50-70:~/yocto/build-fido$ pkg-config --cflags xkbcommon
               <=== Return is EMPTY (?)
joel@linux-Lenovo-G50-70:~/yocto/build-fido$ pkg-config --libs xkbcommon
-lxkbcommon    <=== Looks correct

添加PKG_CONFIG_PATH

 $ PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/usr/lib/x86_64-linux-gnu/pkgconfig/
 $ export PKG_CONFIG_PATH


 $ env | grep PKG
 PKG_CONFIG_PATH=:/usr/lib/x86_64-linux-gnu/pkgconfig/

但在运行bitbake时，我仍然收到相同的消息。

有什么建议吗？

寻找xkbcommon

$ find /usr/lib/ -name *xkbcommon*
/usr/lib/x86_64-linux-gnu/libxkbcommon.so
/usr/lib/x86_64-linux-gnu/libxkbcommon.so.0.0.0
/usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0.0.0
/usr/lib/x86_64-linux-gnu/libxkbcommon-x11.a
/usr/lib/x86_64-linux-gnu/libxkbcommon.a
/usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so.0
/usr/lib/x86_64-linux-gnu/libxkbcommon-x11.so
/usr/lib/x86_64-linux-gnu/pkgconfig/xkbcommon.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/xkbcommon-x11.pc
/usr/lib/x86_64-linux-gnu/libxkbcommon.so.0

Answer 1

在这种情况下，铬配方未能找到libxkbcommon。由于在构建目标系统的配方时发生了错误，我们需要告诉构建系统，铬配方依赖于libxkbcommmon。

这可以通过添加

 DEPENDS += "libxkbcommon"

铬的配方。

值得注意的是，libxkbcommon很可能是一个可选的依赖项，在这种情况下，它应该由合适的PACKAGECONFIG来处理。(见ref.manual中的PACKAGECONFIG)。

备注：我自己从来没有造过铬，所以我宁愿不建议任何合适的PACKAGECONFIG。

Answer 2

我认为Chromium_45的食谱是从我上次看到它(不要再看到它)就被取下来的。

总之，这就是我对Chromium_40所做的。我已经禁用了Wayland (臭氧-铬中的wayland)，所以它只使用x11。

在local.conf中，我添加了CHROMIUM_ENABLE_WAYLAND = "0"

通过这样做，我将绕过CHROMIUM_WAYLAND_DEPENDS = "wayland libxkbcommon"

CHROMIUM_X11_DEPENDS = "xextproto gtk+ libxi libxss"
CHROMIUM_X11_GYP_DEFINES = ""
CHROMIUM_WAYLAND_DEPENDS = "wayland libxkbcommon"
CHROMIUM_WAYLAND_GYP_DEFINES = "use_ash=1 use_aura=1 chromeos=0 use_ozone=1"

python() {
    if d.getVar('CHROMIUM_ENABLE_WAYLAND', True) == '1':
        d.appendVar('DEPENDS', ' %s ' % d.getVar('CHROMIUM_WAYLAND_DEPENDS', True))
        d.appendVar('GYP_DEFINES', ' %s ' % d.getVar('CHROMIUM_WAYLAND_GYP_DEFINES', True))
    else:
        d.appendVar('DEPENDS', ' %s ' % d.getVar('CHROMIUM_X11_DEPENDS', True))
        d.appendVar('GYP_DEFINES', ' %s ' % d.getVar('CHROMIUM_X11_GYP_DEFINES', True))
}

P.S.：我还发现一件奇怪的事是use-egl。

PACKAGECONFIG[use-egl] = ",,virtual/egl virtual/libgles2"被PACKAGECONFIG[use-egl] = ""夸大了，所以我已经将PACKAGECONFIG[use-egl] = ""从chromium.inc中删除了

PACKAGECONFIG ??= "use-egl"

# this makes sure the dependencies for the EGL mode are present; otherwise, the configure scripts
# automatically and silently fall back to GLX
PACKAGECONFIG[use-egl] = ",,virtual/egl virtual/libgles2"

# Additional PACKAGECONFIG options - listed here to avoid warnings
PACKAGECONFIG[component-build] = ""
PACKAGECONFIG[disable-api-keys-info-bar] = ""
PACKAGECONFIG[ignore-lost-context] = ""
PACKAGECONFIG[impl-side-painting] = ""
PACKAGECONFIG[use-egl] = ""
PACKAGECONFIG[kiosk-mode] = ""