[Bug-gnuzilla] IceCat 13.0.1 compilation with Profile-Guided Optimization

[Figue]

Hi,

I'm trying to build IceCat with the Profile-Guided Optimization, 
explained in [1]. I'm doing the compilation with this parameter:

mk_add_options PROFILE_GEN_SCRIPT='$(PYTHON) 
$(OBJDIR)/_profile/pgo/profileserver.py'


And during the build I do this:

export MOZ_PGO=1
export DISPLAY=:99
Xvfb -nolisten tcp -extension GLX -screen 0 1280x1024x24 $DISPLAY &
make -f client.mk build


It starts the virtual X (Xvfb) and launch an IceCat instance in order to 
generate the profiling data for the compiler. It seems that Xvfb is 
running fine (I can see the page http://localhost:8888/), but 
compilation stops at this point. Last IceCat releases are built fine.


This is the output I see when it stops:

MOZ_PGO_INSTRUMENTED=1 OBJDIR=obj-x86_64-unknown-linux-gnu 
JARLOG_DIR=obj-x86_64-unknown-linux-gnu/jarlog/en-US /usr/bin/python2 
obj-x86_64-unknown-linux-gnu/_profile/pgo/profileserver.py 10
args: 
['/home/figue/icecat/src/icecat-13.0.1/obj-x86_64-unknown-linux-gnu/dist/icecat/icecat-bin', 
'-no-remote', '-profile', 
'/home/figue/icecat/src/icecat-13.0.1/obj-x86_64-unknown-linux-gnu/_profile/pgo/pgoprofile/', 
'http://localhost:8888/index.html']
INFO | automation.py | Application pid: 4135
Xlib:  extension "RANDR" missing on display ":99".
localhost.localdomain - - [16/Jul/2012 17:33:47] "GET /index.html 
HTTP/1.1" 200 -
localhost.localdomain - - [16/Jul/2012 17:33:48] code 404, message File 
not found
localhost.localdomain - - [16/Jul/2012 17:33:48] "GET 
/safebrowsing-dummy/newkey HTTP/1.1" 404 -
localhost.localdomain - - [16/Jul/2012 17:33:49] "GET /favicon.ico 
HTTP/1.1" 200 -
localhost.localdomain - - [16/Jul/2012 17:38:23] code 404, message File 
not found
localhost.localdomain - - [16/Jul/2012 17:38:23] "GET 
/safebrowsing-dummy/newkey HTTP/1.1" 404 -


It seems that 404 is not important. I tried to build with GCC 4.7 and 
4.6. Nothing changed. Tried many variations in the build process and 
several machines (i686 and x86_64), but I haven't more ideas. Has anyone 
been able to build IceCat with PGO?


Best regards


[1] 
https://developer.mozilla.org/en/Building_with_Profile-Guided_Optimization/

$(Figue)