<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div><div><br><meta http-equiv="content-type" content="text/html; charset=utf-8"><div dir="auto"><div></div><div>The issue you have here is that clang is trying to build c++14 software against the standard headers for the old libstdc++ that comes with Leopard. That can't work.</div><div><br></div><div>Leopard Intel would usually default to gcc7, which will use it's newer libstdc++ by default.</div><div><br></div><div>You're trying it with clang-7.0, so it needs to be told to use newer headers by setting "-stdlib=" to either libc++ (which you are not using) or macports-libstdc++, which we added to clang to allow it to use the newer gcc headers.</div><div><br></div><div>All this is done in base, but it makes certain assumptions in so doing. There should be a setting in the Portfile "compiler.cxx_standard 2014" that forces base to add the proper flags if clang is the compiler, but here things are relatively less tested on < 10.6 on Intel.</div><div><br></div><div>So try gcc7, short answer. If gcc7 doesn't work, then we'll need to see why base isn't setting the proper flags. Make sure base is current, of course.</div><div><br></div><div>Best, Ken</div><div><br>On Oct 6, 2020, at 05:05, Riccardo Mottola via macports-users <<a href="mailto:macports-users@lists.macports.org">macports-users@lists.macports.org</a>> wrote:<br><br></div><blockquote type="cite"><div><span>Hi,</span><br><span></span><br><span>I am updateing ports on my 10.5 i386-64 MacBook (that first, then i386 and last PPC will follow, given the increasing difficulties).</span><br><span>I fail on poppler, while using clang.</span><br><span></span><br><span>[ 1%] Building CXX object CMakeFiles/poppler.dir/goo/GooString.cc.o</span><br><span>/opt/local/bin/clang++-mp-7.0 -Dpoppler_EXPORTS -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0 -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0/fofi -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0/goo -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0/poppler -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/build -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/build/poppler -isystem /opt/local/include -isystem /opt/local/include/freetype2 -isystem /opt/local/include/openjpeg-2.3 -isystem /opt/local/include/nss -isystem /opt/local/include/nspr -Wall -Wextra -Wpedantic -Wno-unused-parameter -Wcast-align -Wformat-security -Wframe-larger-than=65536 -Wmissing-format-attribute -Wnon-virtual-dtor -Woverloaded-virtual -Wmissing-declarations -Wundef -Wzero-as-null-pointer-constant -Wshadow -fno-exceptions -fno-check-new -fno-common -D_DEFAULT_SOURCE -arch x86_64 -mmacosx-version-min=10.5 -fPIC -std=c++14 -o CMakeFiles/poppler.dir/goo/GooString.cc.o -c /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0/goo/<a href="http://GooString.cc/">GooString.cc</a></span><br><span>In file included from /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0/goo/<a href="http://goostring.cc:48/">GooString.cc:48</a>:</span><br><span>In file included from /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0/goo/gmem.h:33:</span><br><span>/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_poppler/poppler/work/poppler-20.09.0/goo/GooCheckedOps.h:17:10: fatal error: 'type_traits' file not found</span><br><span>#include <type_traits></span><br><span> ^~~~~~~~~~~~~</span><br><span>1 error generated.</span><br><span></span><br><span></span><br><span>at a first glance, this does not seem like a platform-specific or compiler error issue, what do you think?</span><br><span></span><br><span>Riccardo</span><br><span></span><br></div></blockquote></div></div></div><br></body></html>