Package config file, shipped with net-libs/gnutls-3.5.9, state that gnutls depends on libidn2. # tar -Oxf packages/net-libs/gnutls-3.5.8.tbz2 ./usr/lib64/pkgconfig/gnutls.pc ... Version: 3.5.8 ... Requires.private: nettle, hogweed, libtasn1, libidn, zlib # tar -Oxf /packages/net-libs/gnutls-3.5.9.tbz2 ./usr/lib64/pkgconfig/gnutls.pc ... Version: 3.5.9 ... Requires.private: nettle, hogweed, libtasn1, libidn2, zlib Shared library also linked against libidn2: # readelf -d /usr/lib64/libgnutls.so | grep libidn 0x0000000000000001 (NEEDED) Shared library: [libidn2.so.0] P.S. My system have libidn2 because of "idn" use flag for wget and curl. But wget build now fails because libidn2 doesn't provide package configuration file.
Turns out that gnutls, if not explicitly specified, choose idn library by itself. So, instead of dependency change, an use flag can be added.
Probably more than just that, seeing package failures of net-misc/wget-1.19.1 (bug #609204) and ffmpeg-3.2.4 which are probably related to a bad pkg-config file: * Package: media-video/ffmpeg-3.2.4 * Repository: gentoo * Maintainer: media-video@gentoo.org * USE: abi_x86_64 amd64 bzip2 cpu_flags_x86_aes cpu_flags_x86_mmx cpu_flags_x86_mmxext cpu_flags_x86_sse cpu_flags_x86_sse2 cpu_flags_x86_sse3 cpu_flags_x86_sse4_1 cpu_flags_x86_sse4_2 cpu_flags_x86_ssse3 elibc_glibc encode fftools_aviocat fftools_cws2fws fftools_ffescape fftools_ffeval fftools_ffhash fftools_fourcc2pixfmt fftools_graph2dot fftools_ismindex fftools_pktdumper fftools_qt-faststart fftools_sidxindex fftools_trasher gnutls gpl hardcoded-tables iconv kernel_linux mp3 network postproc threads userland_GNU webp x264 x265 xvid zlib * FEATURES: preserve-libs sandbox userpriv usersandbox >>> Unpacking source... >>> Unpacking ffmpeg-3.2.4.tar.bz2 to /var/tmp/portage/media-video/ffmpeg-3.2.4/work >>> Source unpacked in /var/tmp/portage/media-video/ffmpeg-3.2.4/work >>> Preparing source in /var/tmp/portage/media-video/ffmpeg-3.2.4/work/ffmpeg-3.2.4 ... >>> Source prepared. >>> Configuring source in /var/tmp/portage/media-video/ffmpeg-3.2.4/work/ffmpeg-3.2.4 ... * abi_x86_64.amd64: running multilib-minimal_abi_src_configure /var/tmp/portage/media-video/ffmpeg-3.2.4/work/ffmpeg-3.2.4/configure --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --docdir=/usr/share/doc/ffmpeg-3.2.4/html --mandir=/usr/share/man --enable-shared --cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar --optflags=-O2 -pipe -march=ivybridge -mtune=ivybridge --disable-static --enable-avfilter --enable-avresample --disable-stripping --disable-indev=v4l2 --disable-outdev=v4l2 --disable-indev=alsa --disable-indev=oss --disable-indev=jack --disable-outdev=alsa --disable-outdev=oss --disable-outdev=sdl --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-gcrypt --enable-gnutls --disable-gmp --enable-gpl --enable-hardcoded-tables --enable-iconv --disable-lzma --enable-network --disable-openssl --enable-postproc --disable-libsmbclient --disable-ffplay --disable-sdl2 --disable-vaapi --disable-vdpau --disable-xlib --disable-libxcb --disable-libxcb-shm --disable-libxcb-xfixes --enable-zlib --disable-libcdio --disable-libiec61883 --disable-libdc1394 --disable-libcaca --disable-openal --disable-opengl --disable-libv4l2 --disable-libpulse --disable-libopencore-amrwb --disable-libopencore-amrnb --disable-libfdk-aac --disable-libopenjpeg --disable-libbluray --disable-libcelt --disable-libgme --disable-libgsm --disable-mmal --disable-libmodplug --disable-libopus --disable-libilbc --disable-librtmp --disable-libssh --disable-libschroedinger --disable-libspeex --disable-libvorbis --disable-libvpx --disable-libzvbi --disable-libbs2b --disable-chromaprint --disable-libebur128 --disable-libflite --disable-frei0r --disable-libfribidi --disable-fontconfig --disable-ladspa --disable-libass --disable-libfreetype --disable-librubberband --disable-libzimg --disable-libsoxr --enable-pthreads --disable-libvo-amrwbenc --enable-libmp3lame --disable-libkvazaar --disable-nvenc --disable-libopenh264 --disable-libsnappy --disable-libtheora --disable-libtwolame --disable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --disable-x11grab --disable-amd3dnow --disable-amd3dnowext --disable-avx --disable-avx2 --disable-fma3 --disable-fma4 --disable-xop --cpu=ivybridge --disable-doc --disable-htmlpages --enable-manpages ERROR: gnutls not found using pkg-config ================================================================= Package Settings ================================================================= net-libs/gnutls-3.5.9::gentoo was built with the following: USE="cxx dane idn nls openssl sslv3 tls-heartbeat tools zlib -doc -examples -guile -pkcs11 -sslv2 -static-libs -test -test-full -valgrind" ABI_X86="64 -32 -x32" LINGUAS="de en -cs -fi -fr -it -ms -nl -pl -sv -uk -vi -zh_CN" media-video/ffmpeg-3.2.2::gentoo was built with the following: USE="bzip2 encode gnutls gpl hardcoded-tables iconv mp3 network postproc threads webp x264 x265 xvid zlib -X -alsa (-altivec) -amr -amrenc (-armv5te) (-armv6) (-armv6t2) (-armvfp) -bluray -bs2b -cdio -celt -chromaprint -cpudetection -debug -doc -ebur128 -fdk -flite -fontconfig -frei0r -fribidi -gcrypt -gme -gmp -gsm -iec61883 -ieee1394 -jack -jpeg2k -kvazaar -ladspa -libass -libcaca -libilbc -librtmp -libsoxr -libv4l -lzma (-mipsdspr1) (-mipsdspr2) (-mipsfpu) (-mmal) -modplug (-neon) -nvenc -openal -opengl -openh264 -openssl -opus -oss -pic -pulseaudio -rubberband -samba -schroedinger -sdl -snappy -speex -ssh -static-libs -test -theora -truetype -twolame -v4l -vaapi -vdpau -vorbis -vpx -wavpack -xcb -zimg -zvbi" ABI_X86="64 -32 -x32" CPU_FLAGS_X86="aes mmx mmxext sse sse2 sse3 sse4_1 sse4_2 ssse3 -3dnow -3dnowext -avx -avx2 -fma3 -fma4 -xop" FFTOOLS="aviocat cws2fws ffescape ffeval ffhash fourcc2pixfmt graph2dot ismindex pktdumper qt-faststart sidxindex trasher" # pkg-config --libs gnutls -lgnutls # pkg-config --print-errors gnutls Package libidn2 was not found in the pkg-config search path. Perhaps you should add the directory containing `libidn2.pc' to the PKG_CONFIG_PATH environment variable Package 'libidn2', required by 'gnutls', not found So this is probably caused by =net-libs/gnutls-3.5.9.
Confirmed, once the missing pkg-config file for net-dns/libidn2 is there, all the build errors are gone. net-libs/gnutls-3.5.9 will need to adjust RDEPS to catch automagic on libidn2.
commit 7ac93bc8a56d5bb481d4ebabb8ca3a2eddb0ea63 Author: Lars Wendler <polynomial-c@gentoo.org> Date: Mon Feb 13 09:15:40 2017 net-libs/gnutls: Revbump to fix idn dependency (bug #609180) which has been changed from net-dns/libidn to net-dns/libidn2. Package-Manager: Portage-2.3.3, Repoman-2.3.1
