On 3/24/2016 3:45 PM, Bryan Drewery wrote: > On 3/24/2016 3:44 PM, Dimitry Andric wrote: >> On 24 Mar 2016, at 23:36, Bryan Drewery <bdrew...@freebsd.org> wrote: >>> >>> Is there any problem with forcing -std=c++11 for all CXX/LIB_CXX builds >>> now? We do this when using an external GCC since it doesn't default to >>> the c++11 standard quite yet. As far as I understand, we require c++11 >>> to build clang/libc++. >> >> Yes, but it already passes -std=c++11 in the correct places, as far as I >> know. E.g. during the clang and libc++ builds. >> >> >>> It seems to be the problem at >>> https://lists.freebsd.org/pipermail/freebsd-toolchain/2015-October/001757.html >>> which I've fixed in an upcoming commit to properly pass -std=c++11 to >>> the lib32 build in CXXFLAGS. >> >> Hm, is this occuring during the build of libcxxrt, or of libc++? If it >> is the former, then it seems that the system headers don't properly >> declare _Static_assert() in that case. I have no clue as to why, though >> maybe it's picking something up from gcc's famously "fixed" standard >> headers? >> > > libcxxrt. > > My fix also includes passing the proper -isystem =/usr/include/c++/v1 path. > > I'll try without the -std change. > >
It fails without -std=c++11 (there's more discussion in that link and in
PR 205453).
> /usr/local/bin/powerpc64-portbld-freebsd11.0-g++ -m32 -DCOMPAT_32BIT
> -mcpu=powerpc --sysroot=/usr/obj/powerpc.powerpc64/root/git/freebsd/lib32
> -L/usr/obj/powerpc.powerpc64/root/git/freebsd/lib32/usr/lib32
> -B/usr/obj/powerpc.powerpc64/root/git/freebsd/lib32/usr/lib32 -isystem
> /usr/obj/powerpc.powerpc64/root/git/freebsd/lib32/usr/include -isystem
> /usr/obj/powerpc.powerpc64/root/git/freebsd/lib32/usr/include/c++/v1
> -L/usr/obj/powerpc.powerpc64/root/git/freebsd/world32//root/git/freebsd/lib/libc++
> -pg -O2 -pipe -I/root/git/freebsd/lib/libcxxrt/../../contrib/libcxxrt -MD
> -MF.depend.guard.po -MTguard.po -fstack-protector-strong
> -Wno-error=unused-function -Wno-error=enum-compare
> -Wno-error=logical-not-parentheses -Wno-error=bool-compare
> -Wno-error=uninitialized -Wno-error=array-bounds -Wno-error=clobbered
> -Wno-error=cast-align -Wno-error=extra -Wno-error=attributes
> -Wno-error=inline -Wno-error=unused-but-set-variable -Wno-error=unused-value
> -Wno-error=strict-aliasing -Wno-error=addre
ss -c /root/git/freebsd/lib/libcxxrt/../../contrib/libcxxrt/guard.cc -o
guard.po
> --- guard.o ---
> /root/git/freebsd/lib/libcxxrt/../../contrib/libcxxrt/guard.cc:104:15: error:
> expected constructor, destructor, or type conversion before '(' token
> _Static_assert(sizeof(guard_t) == sizeof(uint64_t), "");
> ^
> --- libelftc_dem_gnu3.So ---
> --- guard.o ---
> *** [guard.o] Error code 1
>
> make[4]: stopped in /root/git/freebsd/lib/libcxxrt
--
Regards,
Bryan Drewery
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