The root cause is that the new src/SConscript does not set up GCC
environment for version 4.4 correctly
if env['GCC']:
# Depending on the SWIG version, we also need to supress
# warnings about missing field initializers.
swig_env.Append(CCFLAGS='-Wno-missing-field-initializers')
# suppress warning from GCC 4.4
if compareVersions(env['GCC_VERSION'], '4.4') >= 0:
swig_env.Append(CCFLAGS='-Wno-uninitialized')
if compareVersions(env['GCC_VERSION'], '4.6') >= 0:
swig_env.Append(CCFLAGS='-Wno-unused-but-set-variable')
# If gcc supports it, also warn for deletion of derived
# classes with non-virtual desctructors. For gcc >= 4.7 we
# also have to disable warnings about the SWIG code having
# potentially uninitialized variables.
if compareVersions(env['GCC_VERSION'], '4.7') >= 0:
new_env.Append(CXXFLAGS='-Wdelete-non-virtual-dtor')
swig_env.Append(CCFLAGS='-Wno-maybe-uninitialized')
From: gem5-users-boun...@gem5.org [mailto:gem5-users-boun...@gem5.org] On
Behalf Of Steve Reinhardt
Sent: Wednesday, March 20, 2013 8:09 PM
To: gem5 users mailing list
Subject: Re: [gem5-users] gem5 build problem
The quickest fix is to delete this line in src/SConscript:
swig_env.Append(CCFLAGS='-Werror')
Steve
On Wed, Mar 20, 2013 at 7:52 PM, Tao Zhang <tao.zhang.0...@gmail.com> wrote:
Dear all,
When I built the latest gem5, the following compilation erros came up. More
interesting, it only happens when buiding gem5.fast. gem5.debug can still be
built successfully. Any clue to fix it? (swig--1.3.40, scons--2.1.0,
python--2.6.6, gcc--4.4.5)
============================================================
cc1plus: warnings being treated as errors
build/ALPHA/python/swig/core_wrap.cc: In function 'PyObject*
_wrap_new_Cycles(PyObject*, PyObject*)':
build/ALPHA/python/swig/core_wrap.cc:3323: error: 'argv[0]' may be used
uninitialized in this function
scons: *** [build/ALPHA/python/swig/core_wrap.fo] Error 1
cc1plus: warnings being treated as errors
build/ALPHA/python/swig/event_wrap.cc: In function 'PyObject*
_wrap_new_Cycles(PyObject*, PyObject*)':
build/ALPHA/python/swig/event_wrap.cc:3380: error: 'argv[0]' may be used
uninitialized in this function
build/ALPHA/python/swig/event_wrap.cc: In function 'PyObject*
_wrap_simulate(PyObject*, PyObject*)':
build/ALPHA/python/swig/event_wrap.cc:4590: error: 'argv[0]' may be used
uninitialized in this function
scons: *** [build/ALPHA/python/swig/event_wrap.fo] Error 1
cc1plus: warnings being treated as errors
build/ALPHA/python/swig/range_wrap.cc: In function 'PyObject*
_wrap_new_Cycles(PyObject*, PyObject*)':
build/ALPHA/python/swig/range_wrap.cc:3120: error: 'argv[0]' may be used
uninitialized in this function
scons: *** [build/ALPHA/python/swig/range_wrap.fo] Error 1
cc1plus: warnings being treated as errors
build/ALPHA/python/swig/debug_wrap.cc: In function 'PyObject*
_wrap_new_Cycles(PyObject*, PyObject*)':
build/ALPHA/python/swig/debug_wrap.cc:10624: error: 'argv[0]' may be used
uninitialized in this function
scons: *** [build/ALPHA/python/swig/debug_wrap.fo] Error 1
scons: building terminated because of errors.
============================================================
Regards,
--
**********************************
Tao Zhang
Department of Computer Science& Engineering,
College of Engineering, Pennsylvania State University
354B IST Building
University Park, PA 16802
(Office) 814-863-1047
(Mobile) 408-930-8930
Homepage: www.cse.psu.edu/~tzz106
**********************************
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_..`--'_..-_/ /--'_.' ,'
(il),-'' (li),' ((!.-'
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grasp, but if you will sit down quietly, may alight upon you.
--- Nathaniel Hawthorne
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