[Bug 1711337] Re: Firefox crashes at start on armv7L after 55.0.1 update

[Chituc Georgian]

Here is what I did .

apt-get install build-essential fakeroot devscripts
apt-get build-dep firefox
apt-get install icecc
apt-get install clang-5.0
apt-get install python-dev
apt-get source firefox


cd firefox-58.0.2+build1/

export CC=clang-5.0
export CXX=clang++-5.0
export CCACHE_PREFIX=icecc


dpkg-buildpackage -b

After configure finish and it create stuff in obj-arm-linux-gnueabihf directory , when it started to compile I  CTRL+C it .
It generated 3 mozconfig files witch next I eddit to add clang to them too

pico ./debian/config/mozconfig
pico mozconfig 
pico browser/config/mozconfig

I added to all this mozconfig files at the top of files :

mk_add_options 'export CCACHE_PREFIX=icecc'
export CC=clang-5.0
export CXX=clang++-5.0


Next all I did was inside obj-arm-linux-gnueabihf directory the dir in witch it compiles all .
So I did not modified the firefox source ,I just adapted the generated backend.mk from obj-arm-linux-gnueabihf and restarted the build process teling him to not clean .
I had to modify :
firefox-58.0.2+build1/obj-arm-linux-gnueabihf/media/libpng/backend.mk and change "-std=c89" to "-std=gnu89"
firefox-58.0.2+build1/obj-arm-linux-gnueabihf/media/ffvpx/libavutil/backend.mk added to the last line -std=gnu99
firefox-58.0.2+build1/obj-arm-linux-gnueabihf/media/ffvpx/libavutil/backend.mk added to the last line -std=c99

Next I restarted the build process teling him to not clean so it did not
deleted my modified mozconfig and did not deleted obj-arm-linux-
gnueabihf directory , it just startd gain compilation using my
modifications .

dpkg-buildpackage -b -nc

If you see any other compile errors expect them to be from incorect
"-std=" , mising or wrong one and just modify backend.mk for the libs
witch fails in the firefox-58.0.2+build1/obj-arm-linux-gnueabihf/ and
restart using "dpkg-buildpackage -b -nc" so it to do not clean your
modifications .

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Title:
  Firefox crashes at start on armv7L after 55.0.1 update

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