#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 jdemeyer):
Concerning `march=native`: what do you think about using `testcflags.sh`
for this? Let's add
{{{
unsigned long fancy_insns() { return (unsigned long) d; }
}}}
to the program that `testcflags.sh` uses to check flags.
Then we could do something like
{{{
if testcflags.sh -march=native >/dev/null; then
CFLAGS="-march=native $CFLAGS"
elif testcflags.sh "-march=native -mno-avx" >/dev/null; then
echo >&2 "Warning bla bla"
CFLAGS="-march=native -mno-avx $CFLAGS"
fi
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12830#comment:4>
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