Date: Mon, 02 Jun 2014 15:49:32 +0200 From: hhh@sdf.org To: Lowell Gilbert <freebsd-ports-local@be-well.ilk.org> Cc: freebsd-ports@freebsd.org Subject: Re: g++ cannot find std::stoi Message-ID: <87fvjnifpv.fsf@gmail.com> In-Reply-To: <44k3942y0w.fsf@be-well.ilk.org> References: <874n09tr87.fsf@gmail.com> <44k3942y0w.fsf@be-well.ilk.org>
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Lowell Gilbert <freebsd-ports-local@be-well.ilk.org> writes: > hhh@sdf.org writes: > >> I'm trying to compile OpenCog [1] using g++47, but get an error about >> missing std::stoi. >> >> I have attached a micro-example [2] that generates the same error, if I >> try to compile it with: >> >> % g++47 -std=c++11 s.cc >> s.cc: In function 'int main()': >> s.cc:8:13: error: 'stoi' is not a member of 'std' >> >> >> There are no problems neither with clang nor with g++ on Debian: >> >> % clang++ -std=c++11 s.cc >> >> >> >> What am I missing? > > An old libc++ bug in gcc. > > You need a newer compiler. I tried with gcc49 and it seem to have the same problem. > The default compiler on recent (I think 10.0 and up) is a version of > clang that will get this right. Unfortunately, OpenCog has some gcc specific code. Do you have other ideas? Thank you! Henryk
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