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sys-apps/util-linux-2.13.1.1 and all other versions that don't block
coreutils-6.11 (therefore haven't tried older than util-linux-2.13-r2) fail to
compile on a uclibc-0.9.28.3-r6 system because it can't find the definitions of
OMAGIC, NMAGIC and ZMAGIC, which come from /usr/include/a.out.h on a glibc
system.
uclibc provided a.out.h just includes linux/a.out.h, but that file does not
exist, at least not with linux-headers-2.6.25-r1:


Making all in text-utils
make[2]: Entering directory
`/var/tmp/portage/sys-apps/util-linux-2.13.1.1/work/util-linux-ng-2.13.1.1/text-utils'
i386-gentoo-linux-uclibc-gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I..  -include
../config.h -I../include -DLOCALEDIR=\"/usr/share/locale\"  -fsigned-char -Os
-mtune=geode -pipe -MT more.o -MD -MP -MF .deps/more.Tpo -c -o more.o more.c
In file included from more.c:57:
/usr/include/a.out.h:4:26: error: linux/a.out.h: No such file or directory
more.c: In function 'magic':
more.c:549: error: 'OMAGIC' undeclared (first use in this function)
more.c:549: error: (Each undeclared identifier is reported only once
more.c:549: error: for each function it appears in.)
more.c:550: error: 'NMAGIC' undeclared (first use in this function)
more.c:551: error: 'ZMAGIC' undeclared (first use in this function)
make[2]: *** [more.o] Error 1
make[2]: Leaving directory
`/var/tmp/portage/sys-apps/util-linux-2.13.1.1/work/util-linux-ng-2.13.1.1/text-utils'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory
`/var/tmp/portage/sys-apps/util-linux-2.13.1.1/work/util-linux-ng-2.13.1.1'
make: *** [all] Error 2
 * 
 * ERROR: sys-apps/util-linux-2.13.1.1 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 2058:  Called die
 * The specific snippet of code:
 *       emake || die "emake failed"
 *  The die message:
 *   emake failed
 * 
 * If you need support, post the topmost build error, and the call stack if
relevant.
 * A complete build log is located at
'/var/tmp/portage/sys-apps/util-linux-2.13.1.1/temp/build.log'.
 * The ebuild environment file is located at
'/var/tmp/portage/sys-apps/util-linux-2.13.1.1/temp/environment'.
 *

Portage 2.1.5_rc10 (uclibc/x86, gcc-4.3.0, uclibc-0.9.28.3-r6, 2.6.24-gentoo-r3
x86_64)
=================================================================
System uname: 2.6.24-gentoo-r3 x86_64 AMD Athlon(tm) 64 Processor 3500+
Timestamp of tree: Mon, 12 May 2008 07:15:01 +0000
app-shells/bash:     3.2_p39
dev-lang/python:     2.5.2-r2
sys-apps/baselayout: 2.0.0
sys-apps/openrc:     0.2.4
sys-apps/sandbox:    1.2.18.1-r2
sys-devel/autoconf:  2.62
sys-devel/automake:  1.10.1-r1
sys-devel/binutils:  2.18-r1
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   1.5.26
virtual/os-headers:  2.6.25-r1
ACCEPT_KEYWORDS="x86 ~x86"
CBUILD="i386-gentoo-linux-uclibc"
CFLAGS="-Os -mtune=geode -pipe"
CHOST="i386-gentoo-linux-uclibc"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/env.d /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 /etc/udev/rules.d"
CXXFLAGS="-Os -mtune=geode -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig buildpkg distlocks nodoc noinfo noman parallel-fetch
sandbox sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="http://ftp.linux.ee/pub/gentoo/distfiles/
http://trumpetti.atm.tut.fi/gentoo/"
LDFLAGS="-Wl,-O1,--as-needed"
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="/root/overlay /root/x11"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="bindist cli cracklib dri midi mudflap ncurses nocxx openmp pcre perl
readline reflection session spl ssl tcpd uclibc x86 xcb xorg 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 authn_alias
authn_anon 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 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"
ELIBC="uclibc" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780
lb216 lcdm001 mtxorb ncurses text" USERLAND="GNU"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL,
LINGUAS, MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS,
PORTAGE_RSYNC_EXTRA_OPTS

Builds fine with stable linux-headers-2.6.23

Yes. Stable (In reply to comment #2)
> Builds fine with stable linux-headers-2.6.23
> 
sys-kernel/linux-headers-2.6.23-r3 headers work too.


(In reply to comment #1)
> Portage 2.1.5_rc10 (uclibc/x86, gcc-4.3.0, uclibc-0.9.28.3-r6, 2.6.24-gentoo-r3
> x86_64)
>
How did you manage to get gcc 4.3.0 with uClibc? I can't get it to compile
under uClibc.

I think I manually fixed /usr/include/fenv.h based on changes done on uclibc
trunk, as seen by its ViewVC interface - not sure that was for gcc though

fenv.h really has nothing to do with a.out.h or the issue at hand here

(In reply to comment #5)
> fenv.h really has nothing to do with a.out.h or the issue at hand here
> 

But emerging gcc 4.3.0 under uClibc is complaining about missing fenv.h:
[...]
/var/tmp/portage/sys-devel/gcc-4.3.0/work/build/./gcc/xgcc
-B/var/tmp/portage/sys-devel/gcc-4.3.0/work/build/./gcc/
-B/usr/i686-gentoo-linux-uclibc/bin/ -B/usr/i686-gentoo-linux-uclibc/lib/
-isystem /usr/i686-gentoo-linux-uclibc/include -isystem
/usr/i686-gentoo-linux-uclibc/sys-include -O -O2  -g -Os -DIN_GCC    -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition
 -isystem ./include  -fPIC -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED   -I. -I. -I../.././gcc
-I/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc
-I/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/.
-I/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/../gcc
-I/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/../include
-I/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid
-DENABLE_DECIMAL_BID_FORMAT -DHAVE_CC_TLS -DUSE_TLS -o bid_decimal_globals.o
-MT bid_decimal_globals.o -MD -MP -MF bid_decimal_globals.dep -c
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:52:18:
error: fenv.h: No such file or directory
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:
In function '__dfp_test_except':
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:64:
error: 'FE_INEXACT' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:64:
error: (Each undeclared identifier is reported only once
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:64:
error: for each function it appears in.)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:66:
error: 'FE_UNDERFLOW' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:68:
error: 'FE_OVERFLOW' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:70:
error: 'FE_DIVBYZERO' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:72:
error: 'FE_INVALID' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:
In function '__dfp_raise_except':
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:81:
error: 'FE_INEXACT' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:83:
error: 'FE_UNDERFLOW' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:85:
error: 'FE_OVERFLOW' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:87:
error: 'FE_DIVBYZERO' undeclared (first use in this function)
/var/tmp/portage/sys-devel/gcc-4.3.0/work/gcc-4.3.0/libgcc/config/libbid/bid_decimal_globals.c:89:
error: 'FE_INVALID' undeclared (first use in this function)
make[3]: *** [bid_decimal_globals.o] Error 1
make[3]: Leaving directory
`/var/tmp/portage/sys-devel/gcc-4.3.0/work/build/i686-gentoo-linux-uclibc/libgcc'
make[2]: *** [all-stage1-target-libgcc] Error 2
make[2]: Leaving directory `/var/tmp/portage/sys-devel/gcc-4.3.0/work/build'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/var/tmp/portage/sys-devel/gcc-4.3.0/work/build'
make: *** [profiledbootstrap] Error 2
 *
 * ERROR: sys-devel/gcc-4.3.0 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 4556:  Called toolchain_src_compile
 *             environment, line 5025:  Called gcc_src_compile
 *             environment, line 2891:  Called gcc_do_make
 *             environment, line 2721:  Called die
 * The specific snippet of code:
 *       emake LDFLAGS="${LDFLAGS}" STAGE1_CFLAGS="${STAGE1_CFLAGS}"
LIBPATH="${LIBPATH}" BOOT_CFLAGS="${BOOT_CFLAGS}" ${GCC_MAKE_TARGET} || die
"emake failed with ${GCC_MAKE_TARGET}";
 *  The die message:
 *   emake failed with profiledbootstrap
 *
 * If you need support, post the topmost build error, and the call stack if
relevant.
 * A complete build log is located at
'/var/tmp/portage/sys-devel/gcc-4.3.0/temp/build.log'.
 * The ebuild environment file is located at
'/var/tmp/portage/sys-devel/gcc-4.3.0/temp/environment'.
 *

 * Messages for package sys-devel/gcc-4.3.0:

 *
 * ERROR: sys-devel/gcc-4.3.0 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 4556:  Called toolchain_src_compile
 *             environment, line 5025:  Called gcc_src_compile
 *             environment, line 2891:  Called gcc_do_make
 *             environment, line 2721:  Called die
 * The specific snippet of code:
 *       emake LDFLAGS="${LDFLAGS}" STAGE1_CFLAGS="${STAGE1_CFLAGS}"
LIBPATH="${LIBPATH}" BOOT_CFLAGS="${BOOT_CFLAGS}" ${GCC_MAKE_TARGET} || die
"emake failed with ${GCC_MAKE_TARGET}";
 *  The die message:
 *   emake failed with profiledbootstrap
 *
 * If you need support, post the topmost build error, and the call stack if
relevant.
 * A complete build log is located at
'/var/tmp/portage/sys-devel/gcc-4.3.0/temp/build.log'.
 * The ebuild environment file is located at
'/var/tmp/portage/sys-devel/gcc-4.3.0/temp/environment'.
 *

(In reply to comment #6)
> (In reply to comment #5)
> > fenv.h really has nothing to do with a.out.h or the issue at hand here
> > 
> 
> But emerging gcc 4.3.0 under uClibc is complaining about missing fenv.h:

Yes, I forgot to file a bug for that separate issue. Please ensure a separate
bug exists for the fenv.h gcc4.3 problem.

as Mart says, this is about util-linux only, not gcc

(In reply to comment #8)
> as Mart says, this is about util-linux only, not gcc
> 
Okay. (In reply to comment #7)
> (In reply to comment #6)
> > (In reply to comment #5)
> > > fenv.h really has nothing to do with a.out.h or the issue at hand here
> > > 
> > 
> > But emerging gcc 4.3.0 under uClibc is complaining about missing fenv.h:
> 
> Yes, I forgot to file a bug for that separate issue. Please ensure a separate
> bug exists for the fenv.h gcc4.3 problem.
> 
I should creat a separate bug or will you do that (with the changes you did to
your uClib for getting it to compile GCC >= 4.3. btw: uclibc 0.9.29 has now
finally a fenv.h file)?

(In reply to comment #9)
> btw: uclibc 0.9.29 has now finally a fenv.h file)?

On my chroot environment with uClibc-0.9.29:

# qfile fenv.h
sys-devel/gcc
(/usr/lib/gcc/i486-gentoo-linux-uclibc/4.2.3/include/g++-v4/tr1/fenv.h)
sys-libs/uclibc (/usr/include/bits/fenv.h)

Don't tried to compile gcc-4.3.0 yet...

committed the change i proposed upstream (dont use a.out.h)