Issues running cefclient using 32-bit chroot on Linux 64bit

[Czarek]

Initially there was build issue, it couldn't find gtk.h, fixed it by editing cmake variables. Created issue:
https://bitbucket.org/chromiumembedded/ ... n-building

Then run into issues during linking, it couldn't find many .so libraries. I had to install these:

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apt-get install libnss3 libnspr4 libxss1 libgconf-2-4


It built fine now. However when running cefclient or cefsimple I get error:

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./cefclient
Illegal instruction (core dumped)


Debugged it using gdb and see:

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Program received signal SIGILL, Illegal instruction.
InitializeResourceBundle () at ../../cef/libcef/common/main_delegate.cc:647


It is this line:

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      CHECK(resources_dir.IsAbsolute());


Source ref: https://bitbucket.org/chromiumembedded/ ... ate.cc-647

Files in the tests/cefclient/Release/ directory:

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drwxr-xr-x 4 root root      4096 Mar 16 11:26 .
drwxr-xr-x 4 root root      4096 Mar 16 11:21 ..
-rw-rw-r-- 1 root root    324107 Mar 16 11:22 cef_100_percent.pak
-rw-rw-r-- 1 root root    435922 Mar 16 11:22 cef_200_percent.pak
-rwxr-xr-x 1 root root   1434917 Mar 16 11:22 cefclient
drwxr-xr-x 2 root root      4096 Mar 16 11:22 cefclient_files
-rw-rw-r-- 1 root root   3581680 Mar 16 11:22 cef_extensions.pak
-rw-rw-r-- 1 root root   6519856 Mar 16 11:22 cef.pak
-rwxrwxr-x 1 root root     20008 Mar 16 11:22 chrome-sandbox
-rw-r--r-- 1 root root         0 Mar 16 11:26 debug.log
-rw-rw-r-- 1 root root   4816809 Mar 16 11:22 devtools_resources.pak
-rw-rw-r-- 1 root root  10130464 Mar 16 11:22 icudtl.dat
-rwxrwxr-x 1 root root 541813212 Mar 16 11:22 libcef.so
drwxr-xr-x 2 root root      4096 Mar 16 11:22 locales
-rw-rw-r-- 1 root root    342741 Mar 16 11:22 natives_blob.bin
-rw-rw-r-- 1 root root    813944 Mar 16 11:22 snapshot_blob.bin


Using 32-bit chroot on ubuntu 14.04 64-bit.
CEF branch 2924.

[Czarek]

I have downloaded latest Sample Application for Linux 32-bit from Spotify and the same error occurs. File: "cef_binary_3.2987.1594.g92fba9c_linux32_client". Running ./cefsimple (cefclient is missing) and the same error occurs "Illegal instruction (core dumped)" with the same 647 line in main_delegate.cc.

I can run fine GUI apps in chroot, "gedit" runs fine.

[magreenblatt]

I wonder what the value of |resources_dir| is. What does CefGetPath(PK_FILE_MODULE, str) return? You can try working around the problem using the --resources-dir-path=XXX command-line flag (specify an absolute full path).

[Czarek]

Here are PathKey values when running from within chroot:

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[0317/064300.583980:INFO:cefsimple_linux.cc(37)] PK_FILE_MODULE=
[0317/064300.584152:INFO:cefsimple_linux.cc(40)] PK_DIR_MODULE=.
[0317/064300.584188:INFO:cefsimple_linux.cc(43)] PK_DIR_EXE=.
[0317/064300.584215:INFO:cefsimple_linux.cc(46)] PK_DIR_CURRENT=/var/cefpython/build/cef_binary_3.2924.1575.g97389a9_linux32/build_cefclient/tests/cefsimple/Release
[0317/064300.584240:INFO:cefsimple_linux.cc(49)] PK_DIR_TEMP=/tmp
[0317/064300.584256:INFO:cefsimple_linux.cc(52)] PK_FILE_EXE=/tmp
[0317/064300.584270:INFO:cefsimple_linux.cc(55)] PK_LOCAL_APP_DATA=/tmp
[0317/064300.584283:INFO:cefsimple_linux.cc(58)] PK_USER_DATA=/tmp


Note the small dot in PK_DIR_MODULE and PK_DIR_EXE.

The issue with resources can be resolved by setting both --resources-dir-path and --locales-dir-path switches. However after solving the previous issue there is yet another "Illegal instruction" error when running:

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Program received signal SIGILL, Illegal instruction.
Init () at ../../content/browser/zygote_host/zygote_communication_linux.cc:270


Source of that file (https://chromium.googlesource.com/chrom ... nux.cc#270):

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     base::Pickle pickle;
     pickle.WriteInt(kZygoteCommandGetSandboxStatus);
-->  if (!SendMessage(pickle, NULL))
        LOG(FATAL) << "Cannot communicate with zygote";


I have created a 32-bit linux using VirtualBox and with that everything works good. However it would be nice to be able to run CEF in chroot, as it would allow for better automation of processes. CEF/Chromium already can be build from sources only on 64bit machine. I can build fine with chroot, however I still need to run unit tests to make sure it works fine.