Debug_GN_arm error when building on Linux (*not* arm)

[Czarek]

I'm building CEF from sources on Linux using automate-git.py tool. Got an error during creation of Debug_GN_arm project. I am *not* building for ARM platform, I'm building for Linux, however despite that ARM projects are being created. How can I disable GN arm projects completely? Here is the error:

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Generating CEF project files...
Creating /home/cz/github/cefpython/build/chromium/src/out/Release_GN_x86 directory.

________ running 'gn gen out/Release_GN_x86' in '/home/cz/github/cefpython/build/chromium/src'
Done. Made 5634 targets from 1201 files in 1962ms
Creating /home/cz/github/cefpython/build/chromium/src/out/Debug_GN_arm directory.

________ running 'gn gen out/Debug_GN_arm' in '/home/cz/github/cefpython/build/chromium/src'
ERROR at //build/config/linux/pkg_config.gni:85:17: Script returned non-zero exit code.
    pkgresult = exec_script(pkg_config_script, args, "value")
                ^----------
Current dir: /home/cz/github/cefpython/build/chromium/src/out/Debug_GN_arm/
Command: python -- /home/cz/github/cefpython/build/chromium/src/build/config/linux/pkg-config.py -s /home/cz/github/cefpython/build/chromium/src/build/linux/debian_wheezy_arm-sysroot -a arm gmodule-2.0 gtk+-3.0 gthread-2.0
Returned 1.
stderr:

Traceback (most recent call last):
  File "/home/cz/github/cefpython/build/chromium/src/build/config/linux/pkg-config.py", line 219, in <module>
    sys.exit(main())
  File "/home/cz/github/cefpython/build/chromium/src/build/config/linux/pkg-config.py", line 138, in main
    prefix = GetPkgConfigPrefixToStrip(args)
  File "/home/cz/github/cefpython/build/chromium/src/build/config/linux/pkg-config.py", line 80, in GetPkgConfigPrefixToStrip
    env=os.environ)
  File "/home/cz/.pyenv/versions/2.7.13/lib/python2.7/subprocess.py", line 219, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '['pkg-config', '--variable=prefix', 'gmodule-2.0', 'gtk+-3.0', 'gthread-2.0']' returned non-zero exit status 1

See //build/config/linux/gtk3/BUILD.gn:14:1: whence it was called.
pkg_config("gtk3_internal_config") {
^-----------------------------------
See //chrome/browser/ui/libgtkui/BUILD.gn:144:12: which caused the file to be included.
           "//build/config/linux/gtk3",
           ^--------------------------
Traceback (most recent call last):
  File "tools/gclient_hook.py", line 135, in <module>
    RunAction(src_dir, cmd)
  File "/home/cz/github/cefpython/build/chromium/src/cef/tools/gclient_util.py", line 39, in RunAction
    command, cwd=dir, always=True)
  File "/home/cz/github/cefpython/build/depot_tools/gclient_utils.py", line 303, in CheckCallAndFilterAndHeader
    return CheckCallAndFilter(args, **kwargs)
  File "/home/cz/github/cefpython/build/depot_tools/gclient_utils.py", line 549, in CheckCallAndFilter
    rv, args, kwargs.get('cwd', None), None, None)
subprocess2.CalledProcessError: Command 'gn gen out/Debug_GN_arm' returned non-zero exit status 1 in /home/cz/github/cefpython/build/chromium/src


OS: Ubuntu 14.04 64bit
CEF: branch 2924

[Czarek]

Here is the culprit from logs:

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subprocess.CalledProcessError: Command '['pkg-config', '--variable=prefix', 'gmodule-2.0', 'gtk+-3.0', 'gthread-2.0']' returned non-zero exit status 1


However I have all these libs installed. When I run that same command manually it returns exit status 0:

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cz@comp:~/github/cefpython/build$ pkg-config --variable=prefix gmodule-2.0 gtk+-3.0 gthread-2.0
/usr /usr /usr
cz@comp:~/github/cefpython/build$ echo $?
0


So I have no idea what is going on. Perhaps Chromium's script modified env variables and it fails to find gtk or some other module?

[Czarek]

I see that chromium/src/build/linux/debian_wheezy_arm-sysroot/ has not GTK 3 inside. Only GTK 2. I have forced Chromium update so these should be updated, right?

I've edited chromium/src/build/config/linux/gtk3/BUILD.gn and removed all contents. It solved ARM error, however it caused another error when parsing x86 configuration, which seems to depend on libgtk3 as well.

I've set GN define use_gtk3=false, but it didn't help.

I am using the same Linux configuration as on the AutomatedBuildSetup wiki page, with use_sysroot=true.

The solution for me was to edit gtk3/BUILD.gn and replace:

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"gtk+-3.0" ==> "gtk+-2.0",
...
 "gtk+-unix-print-3.0" ==>  "gtk+-unix-print-2.0"


Now it started compiling, hopefully it will succeed.

[magreenblatt]

CEF will only attempt to configure arm if you have the debian_wheezy_arm-sysroot installed. You can delete it from the chromium/src/build/linux directory and it should not be re-downloaded unless you request it via GYP_DEFINES (see https://bitbucket.org/chromiumembedded/ ... t-30495117).

[Czarek]

Thanks for info. Will try delete it next time I encounter issues.