Am Donnerstag, 10. August 2017, 15:02:53 CEST schrieb Alexander Monakov: > On Thu, 10 Aug 2017, Jonathan Wakely wrote: > > On 10 August 2017 at 13:05, Rolf Eike Beer wrote: > > > I'm trying to build gcc 5.4.0 together with glibc 2.26. It is a > > > cross-build to both AMD64 or i686 that shows problems, while ARM works. > > > (For those who want to suggest a newer gcc first: no, doesn't work: > > > https://gcc.gnu.org/bugzilla/ show_bug.cgi?id=70936). > > > > > > The problem arises from this output of configure of libgomp: > > > > > > checking for ISO C99 support in <math.h>... no > > > > You need to look at libgomp/config.log and see why this happens. > > Note there's an issue with (just recently released) glibc 2.26 and libstdc++ > that looks related, but root cause may be different as libgomp doesn't use > C++: https://sourceware.org/bugzilla/show_bug.cgi?id=21930 Thanks for the pointer, that very likely is the cause (as I said before, libgomp was a typo, it's actually libstdc++-v3). Greetings, Eike -- Rolf Eike Beer, emlix GmbH, http://www.emlix.com Fon +49 551 30664-0, Fax +49 551 30664-11 Bertha-von-Suttner-Str. 9, 37085 Göttingen, Germany Sitz der Gesellschaft: Göttingen, Amtsgericht Göttingen HR B 3160 Geschäftsführung: Heike Jordan, Dr. Uwe Kracke – Ust-IdNr.: DE 205 198 055 emlix – smart embedded open source
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