K 10 svn:author V 8 truckman K 8 svn:date V 27 2015-12-08T01:42:10.625785Z K 7 svn:log V 2479 Remove USE_GCC=yes from devel/libxs and always build with the base compiler. There is a defect in the libc++ header files bundled with clang < 3.6 that broke the libxs build. Because of this breakage, USE_GCC=yes was added to the port Makefile in r330486. Unfortunately that breaks dns/dnstable in two different ways. Dnstable itself is pure-C code, but it links to two different libraries that contain C++ code, libxs and archivers/snappy, the latter of which is built with the base c++ compiler. * On FreeBSD 9, snappy is generally built with g++ 4.2 from base and linked to libstdc++ in base, whereas libxs is built with g++ from ports and linked to libstdc++ from ports. When building dnstable, the linker seems to load libsnappy first, which brings in libstdc++ from base. This seems to work fine with ports gcc 4.8 or older, but when the default ports version is upgraded to 4.9, the linker fails with the error: "/usr/local/lib/libxs.so.2: undefined reference to `std::__throw_out_of_range_fmt(char const*, ...)@GLIBCXX_3.4.20'" * On FreeBSD >= 10 where clang is the base compiler and snappy is linked to libc++, the build succeeds but the resulting executables will fail at runtime because they link to both libc++ from base and libstdc++ from ports. When building libxs on FreeBSD 10 with clang 3.4, the build error is: CXX libxs_la-io_thread.lo --- libxs_la-encoder.lo --- In file included from encoder.cpp:23: In file included from ./encoder.hpp:28: In file included from /usr/include/c++/v1/algorithm:626: /usr/include/c++/v1/utility:254:9: error: field has incomplete type 'xs::io_thread_t::timer_info_t' _T2 second; ^ Patching the code to work around the build failure does not look possible, so instead, fix the problem in a rather hackish way when compiling with clang < 3.6 and using its bundled c++ headers: * Make a local copy of the two defective header files. * Apply the upstream change to those files from "Allow declaration of map and multimap iterator with incomplete mapped type. Patch from eugenis" * Add the directory containing the updated header files to the CPPFLAGS. This fix is not needed when building with base clang on FreeBSD 9 because it uses the stdc++ headers. PR: 204461 PR: 204400 PR: 196712 Approved by: vg (maintainer) MFH: 2015Q4 Sponsored by: Farsight Security, Inc. END