#10120: Error building the PARI/GP spkg on 32-bit Fedora 11 (with GCC 4.4.1)
------------------------+---------------------------------------------------
Reporter: mpatel | Owner: tbd
Type: defect | Status: needs_info
Priority: major | Milestone: sage-4.6.1
Component: packages | Keywords: gcc pari
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by leif):
A better work-around than `export SAGE_DEBUG=yes` might be to let the
(preferably parallel build) fail on PARI in the first place, then install
PARI with modified `CFLAGS`, and after that continue the build by re-
running `make` with "better" (or unset) `CFLAGS`:
{{{
#!sh
$ export SAGE_PARALLEL_SPKG_BUILD=yes
$ export MAKE="make -j4" # for example; using more threads/jobs than the
number
# of cores the CPU has is usually ok, at least
if the
# machine has enough memory (RAM) available
$ make build # should build all packages that do not depend on PARI, but
will
# fail for PARI
$ export CFLAGS="-O1 -fno-strict-aliasing -fomit-frame-pointer"
$ ./sage -i spkg/standard/pari-2.4.3* # build/install only the PARI spkg;
# _should_ work, unless the scripts
# aren't yet installed
$ unset CFLAGS # clear them, such that the packages' defaults will be
used
$ make # continue building the remaining packages and the documentation
}}}
If the `sage -i ...` doesn't work (because the necessary scripts aren't
yet installed), one could try once again running `make build` (with unset
or "normal" `CFLAGS`), then retrying the `sage -i ...`, again with the
'''modified''' `CFLAGS` as given above, after a successful build of PARI
continuing with `unset CFLAGS` followed by `make`.
Another approach (untested) which makes sure the necessary scripts are
installed after the build of PARI has failed in the first place is to use
the `-k` ("keep going") option of `make`, i.e. replacing
{{{
#!sh
$ make build
}}}
above by
{{{
#!sh
$ make -k build
}}}
(Of course one could do the same with (additional) custom `CFLAGS` for the
usual build, substituting the `unset CFLAGS` by `export CFLAGS="..."`, and
'''pre'''pending those flags to the ones used above for building PARI.)
If one doesn't want to mess around with setting and unsetting `CFLAGS`
many times, here's the solution with one '''very long line''' to avoid
this, this time '''without''' building in parallel:
{{{
#!sh
$ make -k build # should build all packages that do not depend on PARI,
but will
# fail for PARI (with GCC 4.4.1)
# build/install only the PARI spkg, with "temporarily" modified CFLAGS:
$ env CFLAGS="-O1 -fno-strict-aliasing -fomit-frame-pointer" ./sage -i
spkg/standard/pari-2.4.3*
$ make # continue building the remaining packages and the documentation
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10120#comment:11>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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