In a Poudriere FreeBSD 10.3/amd64 jail: libnghttpx.a(libnghttpx_a-shrpx_log_config.o): In function `shrpx::log_config()': shrpx_log_config.cc:(.text+0x106): undefined reference to `__cxa_thread_atexit' See the URL for the full build log. Enabled options were APP, SPDY, HPACK. Building with both APP and SPDY disabled works fine.
At least as workaround: Add in the Makefile to CONFIGURE_ARGS --disable-threads
Please update ports tree and try again. It should be fixed in r426639. Thanks!
(In reply to Sunpoet Po-Chuan Hsieh from comment #2) Yes, it builds now. Thanks!