#12830: Improve handling of CFLAGS in GMP-ECM's spkg-install
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Reporter: leif
| Owner: leif
Type: enhancement
| Status: needs_review
Priority: major
| Milestone: sage-5.0
Component: packages
| Resolution:
Keywords: spkg -march=native assembler error Darwin MacOS __GMP_CFLAGS
__MPIR_CFLAGS gmp.h | Work issues:
Report Upstream: N/A
| Reviewers:
Authors: Leif Leonhardy
| Merged in:
Dependencies:
| Stopgaps:
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Comment (by leif):
Replying to [comment:2 jdemeyer]:
> Instead of copying all this complicated "detect CFLAGS from MPIR" stuff,
I propose the following: make the MPIR spkg store its $CC and $CFLAGS
somewhere (say, in $SAGE_LOCAL/etc/mpirflags) and read that? That would
replace the horrible kludge we have now in this ecm spkg.
Well, using `gmp.h` is the documented, supposed way to do this, and
compatible to GMP.
Extracting the flags isn't complicated (nor a kludge); complain to the
MPIR developers that they break GMP compatibility even with `--enable-
gmpcompat` (as I already did). The extra code working around this is six
lines IIRC, and not really complicated.
[[BR]]
If you want MPIR and GMP to store the flags elsewhere, suggest them to
create a `pkg-config` file (although "standard" `.pc` files don't have a
variable for the compiler used).
We could of course create our own in MPIR's (and GMP's) `spkg-install`,
but that doesn't make much sense to me, since then again our other spkgs
using the `.pc` file would depend on Sage's versions (and a recent version
of Sage itself).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12830#comment:5>
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