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Subject: Re: libstdc++ build failures on MIPS, PowerPC, Sparc
From: David Chisnall <theraven@FreeBSD.org>
In-Reply-To: <A0C428BE-B7CB-493F-BBC6-FECB2166F5DF@dsl-only.net>
Date: Mon, 24 Jul 2017 08:03:33 +0100
Cc: FreeBSD Toolchain <freebsd-toolchain@freebsd.org>,
 FreeBSD Current <freebsd-current@freebsd.org>,
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References: <A0C428BE-B7CB-493F-BBC6-FECB2166F5DF@dsl-only.net>
To: Mark Millard <markmi@dsl-only.net>
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On 23 Jul 2017, at 23:54, Mark Millard <markmi@dsl-only.net> wrote:
>=20
>>    c++ -isystem ${OUTDIR}/tmp/usr/include/c++/v1 -std=3Dc++11  =
-nostdinc++ -isystem ${OUTDIR}/tmp/usr/include -L${OUTDIR}/tmp/usr/lib =
-B${OUTDIR}/tmp/usr/lib --sysroot=3D${OUTDIR}/tmp =
-B${OUTDIR}/tmp/usr/bin  -O -pipe -G0 -EB -mabi=3D32 -msoft-float  =
-DIN_GLIBCPP_V3 -DHAVE_CONFIG_H -I${SRCDIR}/gnu/lib/libstdc++ =
-I${SRCDIR}/contrib/libstdc++/libsupc++ -I${SRCDIR}/contrib/gcc =
-I${SRCDIR}/contrib/libstdc++/include =
-I${SRCDIR}/contrib/gcclibs/include =
-I${SRCDIR}/contrib/libstdc++/include -I. =
-frandom-seed=3DRepeatabilityConsideredGood -fno-implicit-templates =
-ffunction-sections -fdata-sections -Wno-deprecated   -c =
${SRCDIR}/contrib/libstdc++/src/bitmap_allocator.cc -o =
bitmap_allocator.o

This is quite a surprising build command.  It=E2=80=99s using =
usr/include/c++/v1 for system includes, but usr/include/c++/v1 is the =
libc++ header directory.  libstdc++ shouldn=E2=80=99t need to be built =
with C++11 support, but libc++ does, so this command looks like a =
combination of both libc++ and libstdc++ build flags all mashed =
together.

David