David Brodie wrote:
On 08/11/14 12:07, Fernando de Oliveira wrote:
Subject is seamonkey, but error is in *firefox-33.0.3*.
Parts of build log attached.
Left configuration and install parts.
Optimization error starts at line 571, key word is "Executing" at the
beginning of line (search ^Executing).
Your (Bruce, who asked, and anybody else, please) help is much
appreciated.
I will start by comparing python versions in the two systems:
LFS7.1 host (SVN-20120311) (error occurs)
LFS7.6 (no error with enable-optimize
The following relates specifically to Firefox 32.0.1 (and Seamonkey
2.29), but may well still apply to 33.0.3.
There is apparently a gcc compiler issue causing the Python script,
'packager.py' to fail while it is precompiling a list of Javascript
scripts, using Mozilla's (internal) js shell, 'xpcshell' - essentially,
it (i.e. xpcshell) falls over about half way through the list, as your
log demonstrates.
Now as I understand it, for gcc 4.9.x, certain 'undefined' behaviour has
been changed, in particular, the handling (signed) integer overflow, so
that any program that was tacitly relying on a certain behaviour will
have problems, which could very well be what is happening here (i.e.
some counter is overflowing).
See: https://bugzilla.mozilla.org/show_bug.cgi?id=1047803 for some
discussion.
(In other words, it is a gcc problem, not a Python problem)
Using ac_add_options --enable-optimize="-O2" (rather than
--disable-optimize), appears to cure the problem for both packages.
That's interesting. On my 686 system I still have gcc-4.7.0. I'll try
to build it with the full --enable-optimize and see what happens since
the bug report indicates the problem started with gcc-4.8.
If that doesn't work, I'll try --enable-optimize="-O2"
-- Bruce
-- Bruce
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