On Fri, Jun 08, 2018 at 06:37:47PM +0200, Kamil Rytarowski wrote: > On 08.06.2018 17:04, Patrick Welche wrote: > > According to > > > > http://en.cppreference.com/w/cpp/compiler_support > > > > string_view is supported by gcc 7 and clang 4.0. As in NetBSD-current > > base we have gcc 6.4.0 and clang 5.0.1, I thought I would try it out: > > > > $ clang -std=c++17 -o foo foo.cpp > > foo.cpp:3:10: fatal error: 'string_view' file not found > > #include <string_view> > > ^~~~~~~~~~~~~ > > 1 error generated. > > > > Is the page over optimistic, or do I need more flags on my compile line? > > (Guessing that /usr/include has the gcc include files...) > > > > We ship with an old version of libc++ in base. > > If you are using a LLVM style Please try to include it with > <experimental/string_view>. > > I'm working right now on getting HEAD libc++ to work on NetBSD.
Great news! In the meantime, to try things out, I installed pkgsrc/lang/gcc8 and see: $ make rm -f .gdbinit touch .gdbinit # compile ts/net.o c++ -O2 -fPIE -Werror -std=c++14 -fPIC -I/usr/src/local/networking-ts-impl/include -c net.cpp # link ts/net c++ -lpthread -pie -shared-libgcc -o net net.o -Wl,-rpath-link,/lib -L=/lib /usr/bin/ld: /usr/pkg/gcc8/lib/gcc/x86_64--netbsd/8.1.0/crtbegin.o: relocation R_X86_64_32 against hidden symbol `__TMC_END__' can not be used when making a shared object /usr/bin/ld: /usr/pkg/gcc8/lib/gcc/x86_64--netbsd/8.1.0/crtend.o: relocation R_X86_64_32 against `.ctors' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: Nonrepresentable section on output collect2: error: ld returned 1 exit status I randomly added a -fPIC as the message suggests, so used the following Makefile for the above: $ cat Makefile PROG_CXX=net MKRELRO=no CPPFLAGS+=-I/usr/src/local/networking-ts-impl/include CXXFLAGS+=-std=c++14 -fPIC LDFLAGS+=-lpthread #-lstdc++fs MKMAN=no .include <bsd.prog.mk> Cheers, Patrick
