This happened on Mac OS X Mavericks (10.9). When emerging app-editors/vim-7.4.52 (I also tried app-editor/vim-7.3.762 and met the same problem). It reports: os_unix.c: In function 'init_signal_stack': os_unix.c:830: warning: 'struct sigaltstack' declared inside parameter list os_unix.c:830: warning: its scope is only this definition or declaration, which is probably not what you want os_unix.c:830: error: conflicting types for 'sigaltstack' /usr/include/signal.h:85: error: previous declaration of 'sigaltstack' was here os_unix.c:840: warning: passing argument 1 of 'sigaltstack' from incompatible pointer type make[1]: *** [objects/os_unix.o] Error 1 make[1]: Leaving directory `/Users/yanll/Gentoo/var/tmp/portage/app-editors/vim-7.4.52/work/vim74/src' make: *** [first] Error 2 Reproducible: Always anll@yanll-mac ~ $ emerge --info Portage 2.2.7-prefix (prefix/darwin/macos/10.9/x64, gcc-4.2.1, unavailable, 13.0.0 x86_64) ================================================================= System uname: Darwin-13.0.0-x86_64-i386-64bit Timestamp of tree: Wed, 13 Nov 2013 15:36:15 +0000 app-shells/bash: 4.2_p39-r1 dev-lang/python: 2.7.5-r4, 3.2.5-r3, 3.3.2-r2 dev-util/pkgconfig: 0.28 sys-devel/autoconf: 2.69 sys-devel/automake: 1.12.4 sys-devel/gcc-config: 1.8-r00.1 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 Repositories: gentoo_prefix ACCEPT_KEYWORDS="~x64-macos" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-apple-darwin13" CFLAGS="-march=nocona -O2 -pipe" CHOST="x86_64-apple-darwin13" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/terminfo" CXXFLAGS="-march=nocona -O2 -pipe" DISTDIR="/Users/yanll/Gentoo/usr/portage/distfiles" FCFLAGS="" FEATURES="assume-digests binpkg-logs collision-protect config-protect-if-modified distlocks ebuild-locks fixlafiles force-prefix merge-sync news nostrip parallel-fetch preserve-libs protect-owned sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="" GENTOO_MIRRORS="http://distfiles.gentoo.org" LDFLAGS="-Wl,-dead_strip_dylibs" PKGDIR="/Users/yanll/Gentoo/usr/portage/packages" PORTAGE_CONFIGROOT="/Users/yanll/Gentoo/" 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="/Users/yanll/Gentoo/var/tmp" PORTDIR="/Users/yanll/Gentoo/usr/portage" PORTDIR_OVERLAY="" USE="aqua coreaudio cracklib cxx ipv6 mmx mmxext modules ncurses nls objc objc++ prefix readline sse sse2 ssl threads unicode x64-macos zlib" 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" ELIBC="Darwin" 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 ubx" INPUT_DEVICES="keyboard mouse" KERNEL="Darwin" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_2" RUBY_TARGETS="ruby19 ruby18" USERLAND="GNU" 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, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, MAKEOPTS, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, SYNC, USE_PYTHON
[ebuild U ] app-editors/vim-7.4.94 [7.4.52] USE="(-racket) (-selinux)" Can you try and see if 7.4.94 has fixes for Mavericks?
Yes, I tested it on Mavericks. =app-editors/vim-7.4.94 works.
ok, doing nothing then ;)
