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Emerge fails

/bin/sh /var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/libtool
--sile
nt --preserve-dup-deps --mode=compile i686-pc-linux-gnu-gcc  -Iext/posix/
-I/var
/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/ -DPHP_ATOM_INC 
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/include
-I/var/tmp/p
ortage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/main
-I/var/tmp/portage/dev-lang
/php-5.2.6_rc4/work/php-5.2.6RC4 -I/usr/include/libxml2
-I/var/tmp/portage/dev-l
ang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/date/lib -I/usr/include/freetype2
-I/usr
/include/imap
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/mb
string/oniguruma
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext
/mbstring/libmbfl
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ex
t/mbstring/libmbfl/mbfl -I/usr/include/postgresql/libpq-4 -I/usr/include/pspell 
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/TSRM
-I/var/tmp/port
age/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/Zend    -I/usr/include -O3
-march=p
entium3 -mtune=pentium3 -pipe -fomit-frame-pointer  -c
/var/tmp/portage/dev-lang
/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/posix.c -o ext/posix/posix.lo 
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/posix.c: In 
function ‘zif_posix_uname’:
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/posix.c:471:
error: ‘struct utsname’ has no member named ‘domainname’
make: *** [ext/posix/posix.lo] Error 1


Reproducible: Always

Steps to Reproduce:

Created an attachment (id=149478) [details]
emerge --info

confirmed here on amd64 as well...

exists in both 5.2.6-rc4 and 5.2.6-rc3-r1 (only versions tested so far, havent
gone back further...)

Portage 2.1.5_rc2 (default-linux/amd64/2007.0/desktop, gcc-4.2.3, glibc-2.7-r1,
2.6.20.12-xen x86_64)
=================================================================
System uname: 2.6.20.12-xen x86_64 Intel(R) Core(TM)2 CPU 6600 @ 2.40GHz
Timestamp of tree: Sat, 12 Apr 2008 16:20:01 +0000
ccache version 2.4 [enabled]
app-shells/bash:     3.2_p33
dev-java/java-config: 1.3.7, 2.1.5
dev-lang/python:     2.5.1-r5
dev-python/pycrypto: 2.0.1-r6
dev-util/ccache:     2.4-r7
sys-apps/baselayout: 1.12.12
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.13, 2.62
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.24
ACCEPT_KEYWORDS="amd64 ~amd64"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=nocona -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf
/etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/
/etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo
/etc/udev/rules.d"
CXXFLAGS="-march=nocona -O2 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="ccache distlocks fixpackages metadata-transfer parallel-fetch sandbox
sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="ftp://ftp.iinet.net.au/pub/Gentoo
http://ftp.iinet.net.au/pub/Gentoo"
LDFLAGS=""
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --stats --timeout=180 --exclude=/distfiles
--exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage-overlays/layman/enlightenment
/usr/local/portage-overlays/layman/gnash-cvs
/usr/local/portage-overlays/layman/spring-unofficial
/usr/local/portage-overlays/layman/mozilla
/usr/local/portage-overlays/layman/xen
/usr/local/portage-overlays/layman/java-overlay
/usr/local/portage-overlays/layman/sunrise /usr/local/portage-overlays/testing
/usr/local/portage-overlays/testing-xen /usr/local/portage-overlays/spring
/usr/local/portage-overlays/x4x-portage"
SYNC="rsync://10.100.10.1/gentoo-portage"
USE="X a52 aac acl acpi aim alsa amd64 apache2 audiofile avahi avi
bash-completion berkdb big-tables bzip2 cairo canvas cdr cli cpdflib cracklib
crypt cups curl dba dbus divx4linux dlloader dri dts dv dvb dvd dvdr dvdread
emboss encode ethereal evo exif extraengine fam fame ffmpeg firefox flac
fortran gd gdbm gif gimpprint glut gmp gpm gstreamer gtk gtk2 hal iconv icq idn
imap innodb ipv6 isdnlog jabber java jpeg json kerberos lcms ldap libcaca
logrotate mad mhash midi mikmod mmx mng mono mozsvg mp3 mpeg mppe-mppc mudflap
mysql mysqli ncurses nls nptl nptlonly nsplugin nvidia ogg opengl openmp pam
pcntl pcre pdf pear perl php png posix pppd pulseaudio python qt3support
quicktime readline reflection ruby samba sdl session slang snmp soap sockets
spell spl sqlite sse sse2 ssl subtitles suhosin svg tcpd threads tiff truetype
unicode userlocales utf8 vorbis wddx wma xine xinerama xml xml2 xmlrpc xorg
xosd xprint xsl xulrunner xv xvid yahoo zlib" 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" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop
empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi
null plug rate route share shm softvol" APACHE2_MODULES="actions alias
auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file
authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user
autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires
ext_filter file_cache filter headers ident imagemap include info log_config
logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer
proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir
usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="evdev keyboard mouse"
KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001
mtxorb ncurses text" USERLAND="GNU" VIDEO_CARDS="nvidia"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL,
LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

confirmed, 5.2.6-rc3 and 5.2.6-rc1-r1 are also affected... back to 5.2.5 for me
:)

Hm, I'm pretty sure it worked for me when I added it to the tree (and I'm
always testing with USE="posix threads" as well).
ext/posix has not been changed in ages (and there haven't been any code changes
since 5.2.5 at all), so I'd say this is either related to ebuild-specific stuff
or maybe some library.
sys/utsname.h belongs to glibc, but as I'm using the same version as you, I
don't think this is the problem. However, apparently __USE_GNU has to be
defined to get the "domainname" struct member. Maybe somehow this used to be
defined before and no longer is...

ATM I'm re-merging PHP after the autotools update, which might be the guilty
one here.

Ok, now I'm able to reproduce it, so I'm pretty sure it is the autotools
update. Working on it...

Ok, now I'm sure it's autotools. pam had a similar problem (bug 217154). They
used append-flags -D_GNU_SOURCE to work around it, and it works in case of PHP
as well.
Bad thing is, the problems continue afterwards:

/bin/sh /var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/libtool
--silent --preserve-dup-deps --mode=compile x86_64-pc-linux-gnu-gcc 
-Iext/standard/
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/standard/
-DPHP_ATOM_INC
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/include
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/main
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/date/lib
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/TSRM
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/Zend   
-march=nocona -O2 -pipe -D_GNU_SOURCE  -c
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/standard/string.c
-o ext/standard/string.lo 
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/standard/string.c:
In function ‘zif_nl_langinfo’:
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/standard/string.c:597:
error: duplicate case value
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/standard/string.c:594:
error: previously used here
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/standard/string.c:603:
error: duplicate case value
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/standard/string.c:600:
error: previously used here
make: *** [ext/standard/string.lo] Error 1

Created an attachment (id=149923) [details]
emerge --info

(From update of attachment 149923 [details])
5.2.5 does not work for me also:

/var/tmp/portage/dev-lang/php-5.2.5-r1/work/php-5.2.5/ext/posix/posix.c: In
function 'zif_posix_uname':
/var/tmp/portage/dev-lang/php-5.2.5-r1/work/php-5.2.5/ext/posix/posix.c:471:
error: 'struct utsname' has no member named 'domainname'

confirmed. thought it's the newest ebuild/package fault, tried to mask it then
rebuild the old one and the error still appears.

Created an attachment (id=149924) [details]
emerge --info

As I said, this is related to autoconf. Downgrade autoconf to <2.62 for now if
you need it working w/ USE=posix right now.

We know about the problem, I am able to reproduce it and trying different
fixes. No need for more "me too"'s :)

On a technical note:
With append-flags -D_GNU_SOURCE it fails even with autotools-2.61-r1. That
probably means that parts of php need _GNU_SOURCE defined and other parts need
it to be undefined.... I'll see if I can patch in the necessary definitions.

Should be fixed in CVS (without a revbump, as it is a build failure). Sync in
some hours or try adding this line to src_unpack yourself:

sed -re 's:(#ifdef HAVE_CONFIG_H.*):#define _GNU_SOURCE\n\1:' -i
ext/posix/posix.c

*** Bug 217933 has been marked as a duplicate of this bug. ***

This is not fixed for gentoo-freebsd sed needs to be gsed I think.
Should I open a new bug? Testing gsed now

gsed didn't do it either. 
/bin/bash /var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/libtool
--silent --preserve-dup-deps --mode=compile
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/meta_ccld 
-Iext/posix/
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/
-DPHP_ATOM_INC
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/include
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/main
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4
-I/usr/include/libxml2
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/date/lib
-I/usr/include/freetype2 -I/usr/include/imap
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/mbstring/oniguruma
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/mbstring/libmbfl
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/mbstring/libmbfl/mbfl
-I/usr/include/mysql -I/usr/include/pspell
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/TSRM
-I/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/Zend  -D_REENTRANT
-D_THREAD_SAFE  -I/usr/include -O2 -mtune=i686 -pipe -pthread -DZTS  -c
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/posix.c -o
ext/posix/posix.lo 
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/posix.c: In
function 'zif_posix_uname':
/var/tmp/portage/dev-lang/php-5.2.6_rc4/work/php-5.2.6RC4/ext/posix/posix.c:472:
error: 'struct utsname' has no member named 'domainname'
gmake: *** [ext/posix/posix.lo] Error 1
gmake: *** Waiting for unfinished jobs....
 * 
 * ERROR: dev-lang/php-5.2.6_rc4 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 4344:  Called src_compile_normal
 *             environment, line 4455:  Called php5_2-sapi_src_compile
 *             environment, line 3398:  Called die
 * The specific snippet of code:
 *       emake || die "make failed"
 *  The die message:
 *   make failed
 * 
 * If you need support, post the topmost build error, and the call stack if
relevant.
 * A complete build log is located at
'/var/log/portage/dev-lang:php-5.2.6_rc4:20080430-151538.log'.
 * The ebuild environment file is located at
'/var/tmp/portage/dev-lang/php-5.2.6_rc4/temp/environment'.
 * 

I would have been surprised if gsed worked, as `sed` is aliased to `gsed` for
ebuilds (in the freebsd profile's bashrc). Also, much more ebuilds would fail
if this was the reason.

Anyway, I don't really have a clue how to fix it, I both lack the knowledge and
the hardware, but I'll try to ping some of our fbsd devs.

Created an attachment (id=151432) [details]
environment

Created an attachment (id=151434) [details]
dev-lang:php-5.2.6_rc4:20080430-151538.log

~ # emerge --info
Portage 2.1.5_rc6 (default-bsd/fbsd/6.2/x86, gcc-4.2.3, freebsd-lib-6.2-r3,
6.2-RELEASE i386)
=================================================================
System uname: 6.2-RELEASE i386 i386
Timestamp of tree: Wed, 30 Apr 2008 14:00:01 +0000
app-shells/bash:     3.2_p33
dev-java/java-config: 1.3.7, 2.1.6
dev-lang/python:     2.4.4-r4, 2.5.2-r2
dev-python/pycrypto: 2.0.1-r6
sys-apps/baselayout: 2.0.0
sys-apps/openrc:     0.2.2
sys-devel/autoconf:  2.13, 2.62
sys-devel/automake:  1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1
sys-devel/binutils:  2.17-r2
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  6.2-r3
ACCEPT_KEYWORDS="x86-fbsd ~x86-fbsd"
CBUILD="i686-gentoo-freebsd6.2"
CFLAGS="-O2 -mtune=i686 -pipe"
CHOST="i686-gentoo-freebsd6.2"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config
/usr/kde/3.5/shutdown /usr/share/config /var/bind"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf
/etc/gconf /etc/gentoo-release /etc/php/apache2-php5/ext-active/
/etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild
/etc/terminfo"
CXXFLAGS="-O2 -mtune=i686 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="ccache collision-protect distlocks parallel-fetch sfperms strict
unmerge-orphans userfetch"
GENTOO_MIRRORS="http://gentoo.mirrors.pair.com/
http://mirror.datapipe.net/gentoo http://open-systems.ufl.edu/mirrors/gentoo
http://mirror.phy.olemiss.edu/mirror/gentoo"
LDFLAGS=""
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --stats --timeout=180 --exclude=/distfiles
--exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X a52 aac accessibility acl adns apache2 bash-completion bcmath berkdb
bidi bindinst browserplugin bzip2 cairo calendar cli cracklib crypt cups
curlwrappers dbus dedicated dga dlloader dri dts emacs emacs-w3 erandom
ethereal expat fastcgi font ftp gd gdbm geoip glitz glut gnusetup gnutls gtk
gtkhtml hal iconv imap immqt-bc inifile innodb java java5 javascript jp2 jpeg
jpeg2k libcaca libclamv live lzo midi mime ming mmap motif mpi ncurses nls
nsplugin nvidia oav objc oracle oscar oss pam pcre pdf perl php pic posix ppds
python qt3support readline reflection samba session shared spl sqlite sse ssl
symlink tcltktcpd tcpd test threads unicode urandom usb usepackagedmakefiles
userlocales vcd vhosts x86-fbsd xcomposite xml xorg xpm xprint zeroconf zlib"
ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file
hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route
share shm softvol" APACHE2_MODULES="actions alias auth_basic auth_digest
authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default
authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs
dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter
headers ident imagemap include info log_config logio mem_cache mime mime_magic
negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite
setenvif so speling status unique_id userdir usertrack vhost_alias"
ELIBC="FreeBSD" INPUT_DEVICES="keyboard mouse" KERNEL="FreeBSD"
LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses
text" USERLAND="BSD" VIDEO_CARDS="nv vesa"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL,
LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Just to be sure: This problem got introduced for you when you updated autoconf
to 2.62, right? I.e. downgrading to 2.61* makes it work again?
At least you seem to be running 2.62.

I guess so and php-5.2.6 now fails the same way.

php-5.2.6-r1 still fails on this with autoconf-2.62

Yes, I wasn't able to do anything about this one. Still hoping to get help from
the BSD team (pinged them on IRC, now I'll CC them :p).

Still no fix for this yet?

Can you please retry with -r5? Although I doubt it, it might fix it because I
changed the way of passing _GNU_SOURCE.
But without any help from the BSD team (or some BSD user) we'll probably not be
able to fix this, except maybe by coincidence.

(In reply to comment #24)
> Can you please retry with -r5? Although I doubt it, it might fix it because I
> changed the way of passing _GNU_SOURCE.
> But without any help from the BSD team (or some BSD user) we'll probably not be
> able to fix this, except maybe by coincidence.
> 

well domainname is a GNU libc extension.
http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/utsname.h.html
php failing code has:
#ifdef _GNU_SOURCE
        add_assoc_string(return_value, "domainname", u.domainname, 1);
#endif

Therefore defining _GNU_SOURCE makes it think it's on a gnu system while its
not. Maybe replacing the code by
#ifdef __GLIBC__
etc
would make more sense if it does not break anything on linux (and maybe add
other libc's that are confirmed to have domainname); at least for fbsd 7.0,
replacing the ifdef like that solves the issue.

(In reply to comment #25)
> Therefore defining _GNU_SOURCE makes it think it's on a gnu system while its
> not. Maybe replacing the code by
> #ifdef __GLIBC__
> etc
> would make more sense if it does not break anything on linux (and maybe add
> other libc's that are confirmed to have domainname); at least for fbsd 7.0,
> replacing the ifdef like that solves the issue.
Sadly, changing this solely to __GLIBC__ breaks on Linux, as glibc only exposes
this symbol if _GNU_SOURCE is defined. So I've replaced _GNU_SOURCE by
__GLIBC__ as you suggested, but kept -D _GNU_SOURCE in the CFLAGS. Does that
make things better on *BSD?
The changed ebuild is in the php-testing overlay available via layman
(=dev-lang/php-5.2.6-r8).

What's the concrete problem btw, the fact that _GNU_SOURCE is defined?

Thanks for your input anyway. :)

(In reply to comment #26)
> Sadly, changing this solely to __GLIBC__ breaks on Linux, as glibc only exposes
> this symbol if _GNU_SOURCE is defined. So I've replaced _GNU_SOURCE by
> __GLIBC__ as you suggested, but kept -D _GNU_SOURCE in the CFLAGS. Does that
> make things better on *BSD?

it shouldn't matter i'd say; standard bsd headers do not care at all about
GNU_SOURCE being defined or not :) except that it's supposed to mean you want
gnu libc features which won't be available on bsd :)
I don't really understand the initial problem anyway, why _GNU_SOURCE is
defined there (so that php code tries to use domainname) but not when including
the standard headers (so that domainname isn't available in the struct), how it
relates to latest autoconf, etc


> What's the concrete problem btw, the fact that _GNU_SOURCE is defined?

the problem is *php* code:
#ifdef _GNU_SOURCE
        add_assoc_string(return_value, "domainname", u.domainname, 1);
#endif

and the ebuild defining _GNU_SOURCE in cflags makes it use domainname
everywhere which is invalid on bsd. If you need _GNU_SOURCE to get __GLIBC__
defined but replaced  that #ifdef by __GLIBC__ it should work I think.

Please try the in-tree php-5.2.8.

php-5.2.8-r2 has yet another fix (an official one from upstream this time).

5.2.8-r2 still the same

/bin/bash /var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/libtool
--silent --preserve-dup-deps --mode=compile
/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/meta_ccld  -Iext/posix/
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/posix/
-DPHP_ATOM_INC -I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/include
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/main
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8 -I/usr/include/libxml2
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/date/lib
-I/usr/include/freetype2 -I/usr/include/imap
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/mbstring/oniguruma
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/mbstring/libmbfl
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/mbstring/libmbfl/mbfl
-I/usr/include/mysql -I/usr/include/pspell
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/TSRM
-I/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/Zend  -D_REENTRANT
-D_THREAD_SAFE  -I/usr/include -O2 -mtune=i686 -pipe -D_GNU_SOURCE -pthread
-DZTS  -c
/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/posix/posix.c -o
ext/posix/posix.lo                                                              
/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/posix/posix.c: In
function 'zif_posix_uname':                                     
/var/tmp/portage/dev-lang/php-5.2.8-r2/work/php-5.2.8/ext/posix/posix.c:476:
error: 'struct utsname' has no member named 'domainname'       
gmake: *** [ext/posix/posix.lo] Error 1                                         
 *                                                                              
 * ERROR: dev-lang/php-5.2.8-r2 failed.                                         
 * Call stack:                                                                  
 *               ebuild.sh, line   49:  Called src_compile                      
 *             environment, line 4393:  Called src_compile_normal               
 *             environment, line 4512:  Called php5_2-sapi_src_compile          
 *             environment, line 3435:  Called die                              
 * The specific snippet of code:                                                
 *       emake || die "make failed"                                             
 *  The die message:                                                            
 *   make failed                                                                
 *                                                                              
 * If you need support, post the topmost build error, and the call stack if
relevant.                                                       
 * A complete build log is located at
'/var/log/portage/dev-lang:php-5.2.8-r2:20090112-190429.log'.                   
 * The ebuild environment file is located at
'/var/tmp/portage/dev-lang/php-5.2.8-r2/temp/environment'.                      
 *                                                                              

>>> Failed to emerge dev-lang/php-5.2.8-r2, Log file:

It does build with autoconf-2.6x, just not USE posix

emerge =sys-devel/autoconf-2.61-r2 and PHP with USE=posix works

and compiles, fine, but still breaks on 2.62..

Next revision will have yet another fix... maybe that helps.

What's the status currently?