After a usual sync and update world net-libs/gnutls-3.3.15 fails to build and emerge cannot continue. Reproducible: Always Steps to Reproduce: emerge -1v =net-libs/gnutls-3.3.15 or emerge --deep --update --newuse -v world Actual Results: x86_64-pc-linux-gnu-g++ -DHAVE_CONFIG_H -I. -I/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15/doc/examples -I../.. -I/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15/lib/includes -I../../lib/includes -I/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15/extra/includes -I/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15/src/gl -I../../src/gl -D_GL_NO_LARGE_FILES -DNO_LIBCURL -march=core2 -O2 -pipe -std=c++11 -c -o ex-cxx.o /var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15/doc/examples/ex-cxx.cpp In file included from ../../src/gl/time.h:42:0, from /usr/include/pthread.h:24, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/x86_64-pc-linux-gnu/bits/gthr-default.h:35, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/x86_64-pc-linux-gnu/bits/gthr.h:148, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/ext/atomicity.h:35, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/bits/ios_base.h:39, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/ios:42, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/ostream:38, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/iostream:39, from /var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15/doc/examples/ex-cxx.cpp:2: ../../src/gl/stddef.h:93:3: error: conflicting declaration 'typedef union max_align_t max_align_t' } max_align_t; ^ In file included from ../../src/gl/stddef.h:55:0, from ../../src/gl/time.h:42, from /usr/include/pthread.h:24, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/x86_64-pc-linux-gnu/bits/gthr-default.h:35, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/x86_64-pc-linux-gnu/bits/gthr.h:148, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/ext/atomicity.h:35, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/bits/ios_base.h:39, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/ios:42, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/ostream:38, from /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/g++-v4/iostream:39, from /var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15/doc/examples/ex-cxx.cpp:2: /usr/lib/gcc/x86_64-pc-linux-gnu/4.8.4/include/stddef.h:425:3: error: 'max_align_t' has a previous declaration as 'typedef struct max_align_t max_align_t' } max_align_t; ^ Makefile:1647: recipe for target 'ex-cxx.o' failed make[4]: *** [ex-cxx.o] Error 1 make[4]: *** Waiting for unfinished jobs.... make[4]: Leaving directory '/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15-abi_x86_64.amd64/doc/examples' Makefile:3713: recipe for target 'all-recursive' failed make[3]: *** [all-recursive] Error 1 make[3]: Leaving directory '/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15-abi_x86_64.amd64/doc' Makefile:3412: recipe for target 'all' failed make[2]: *** [all] Error 2 make[2]: Leaving directory '/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15-abi_x86_64.amd64/doc' Makefile:1382: recipe for target 'all-recursive' failed make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory '/var/tmp/portage/net-libs/gnutls-3.3.15/work/gnutls-3.3.15-abi_x86_64.amd64' Makefile:1309: recipe for target 'all' failed make: *** [all] Error 2 * ERROR: net-libs/gnutls-3.3.15::gentoo failed (compile phase): * emake failed * Portage 2.2.20 (python 2.7.9-final-0, hardened/linux/amd64/no-multilib, gcc-4.8.4, glibc-2.20-r2, 3.18.9-hardened x86_64) ================================================================= System Settings ================================================================= System uname: Linux-3.18.9-hardened-x86_64-Intel-R-_Core-TM-2_CPU_6600_@_2.40GHz-with-gentoo-2.2 KiB Mem: 3973608 total, 231012 free KiB Swap: 4000180 total, 3903476 free Timestamp of repository gentoo: Wed, 08 Jul 2015 07:30:01 +0000 sh bash 4.3_p33-r2 ld GNU ld (Gentoo 2.24 p1.4) 2.24 app-shells/bash: 4.3_p33-r2::gentoo dev-lang/perl: 5.20.2::gentoo dev-lang/python: 2.7.9-r1::gentoo, 3.3.5-r1::gentoo, 3.4.1::gentoo dev-util/cmake: 3.2.2::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.17::gentoo sys-apps/sandbox: 2.6-r1::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.13.4::gentoo, 1.14.1::gentoo sys-devel/binutils: 2.24-r3::gentoo sys-devel/gcc: 4.8.4::gentoo sys-devel/gcc-config: 1.7.3::gentoo sys-devel/libtool: 2.4.6::gentoo sys-devel/make: 4.1-r1::gentoo sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers) sys-libs/glibc: 2.20-r2::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 x-portage location: /usr/local/portage masters: gentoo priority: 0 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=core2 -O2 -pipe -std=c++11" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps y" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://mirror.mdfnet.se/gentoo/ http://ftp.df.lth.se/pub/gentoo/" LANG="en_US.UTF-8" LC_ALL="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" USE="X acl acpi alsa amd64 bzip2 caps cli cracklib crypt cxx dri emacs firefox gdbm gif gnustep gtk hardened iconv javascript jpeg justify lm_sensors maildir mmx mmxext modules ncurses nls nptl nsplugin objc objc-gc openmp pam pax_kernel pcre pie png posix readline samba session spell sse sse2 sse3 ssl ssp ssse3 tcpd threads tiff truetype type1 unicode urandom usb xattr xml xtpax zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2 sse3 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="pc" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en_GB" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_3" QEMU_SOFTMMU_TARGETS="x86_64" RUBY_TARGETS="ruby19 ruby20" USERLAND="GNU" VIDEO_CARDS="intel" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, INSTALL_MASK, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Attach full build log and config.log.
Created attachment 406360 [details] build.log
Created attachment 406364 [details] config.log compressed since it was bigger than 1MB
# emerge -pqv '=net-libs/gnutls-3.3.15::gentoo' [ebuild N ] net-libs/gnutls-3.3.15 USE="crywrap cxx nls openssl zlib -dane -doc -examples -guile -pkcs11 -static-libs {-test}" LINGUAS="-cs -de -en -fi -fr -it -ms -nl -pl -sv -uk -vi -zh_CN"
OK, should have expected this - self harm. CXXFLAGS="-march=core2 -O2 -pipe -std=c++11" max_align_t is C11 or C++11, under gcc 4.8 it's still gnu90. So, test runs with gcc, the file gets compiled with g++. An obvious conflict. Yet, I wonder how this affects gcc 5.1, where c11 is the default...
...also, a little pet peeve of mine (one of quite a few) - don't use zip, despite its ubiquity, it's a really poor choice.
gl detects max_align_t using C while in C++ max_align_t is already defined if -std=c++11
if you manually add CXXFLAGS="-std=c++11" you should also manually add CFLAGS="-std=c11"
