Calculating dependencies   ... done!
>>> Emerging (1 of 2) x11-apps/sessreg-1.0.0 to /
>>> checking ebuild checksums ;-)
>>> checking auxfile checksums ;-)
>>> checking miscfile checksums ;-)
>>> checking sessreg-1.0.0.tar.bz2 ;-)
>>> Unpacking source...
>>> Unpacking sessreg-1.0.0.tar.bz2 to /var/tmp/portage/sessreg-1.0.0/work
>>> Source unpacked.
>>> Compiling source in /var/tmp/portage/sessreg-1.0.0/work/sessreg-1.0.0 ...
 * econf: updating sessreg-1.0.0/config.guess with /usr/share/gnuconfig/config.guess
 * econf: updating sessreg-1.0.0/config.sub with /usr/share/gnuconfig/config.sub
./configure --prefix=/usr --host=i386-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --prefix=/usr --datadir=/usr/share --build=i386-pc-linux-gnu
checking for a BSD-compatible install... /bin/install -c
checking whether build environment is sane... yes
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking for i386-pc-linux-gnu-gcc... i386-pc-linux-gnu-gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether i386-pc-linux-gnu-gcc accepts -g... yes
checking for i386-pc-linux-gnu-gcc option to accept ANSI C... none needed
checking for style of include used by make... GNU
checking dependency style of i386-pc-linux-gnu-gcc... gcc3
checking for a BSD-compatible install... /bin/install -c
checking how to run the C preprocessor... i386-pc-linux-gnu-gcc -E
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking lastlog.h usability... yes
checking lastlog.h presence... yes
checking for lastlog.h... yes
checking utmpx.h usability... yes
checking utmpx.h presence... yes
checking for utmpx.h... yes
checking sys/param.h usability... yes
checking sys/param.h presence... yes
checking for sys/param.h... yes
checking for struct utmpx.ut_syslen... no
checking for special C compiler options needed for large files... no
checking for _FILE_OFFSET_BITS value needed for large files... 64
checking for _LARGE_FILES value needed for large files... no
checking for i386-pc-linux-gnu-pkg-config... no
checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for SESSREG... yes
checking build system type... i386-pc-linux-gnu
checking host system type... i386-pc-linux-gnu
configure: creating ./config.status
config.status: creating Makefile
config.status: creating config.h
config.status: executing depfiles commands
make  all-am
make[1]: Entering directory `/var/tmp/portage/sessreg-1.0.0/work/sessreg-1.0.0'
if i386-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I. -I.     -O2 -mcpu=i686 -pipe -MT sessreg-sessreg.o -MD -MP -MF ".deps/sessreg-sessreg.Tpo" \
  -c -o sessreg-sessreg.o `test -f 'sessreg.c' || echo './'`sessreg.c; \
then mv -f ".deps/sessreg-sessreg.Tpo" ".deps/sessreg-sessreg.Po"; \
else rm -f ".deps/sessreg-sessreg.Tpo"; exit 1; \
fi
sed -e 's|__vendorversion__|"sessreg 1.0.0" "X Version 11"|' -e 's|__xorgversion__|"sessreg 1.0.0" "X Version 11"|' -e 's|__xservername__|Xorg|g' -e 's|__xconfigfile__|xorg.conf|g' -e 's|__projectroot__|/usr|g' -e 's|__apploaddir__||' -e 's|__appmansuffix__|1x|g' -e 's|__libmansuffix__|3x|g' -e 's|__adminmansuffix__|8|g' -e 's|__miscmansuffix__|7|g' -e 's|__filemansuffix__|5x|g' < sessreg.man > sessreg.1x
sessreg.c:86:28: X11/Xos.h: Too many levels of symbolic links
sessreg.c:87:31: X11/Xfuncs.h: Too many levels of symbolic links
sessreg.c: In function `main':
sessreg.c:366: warning: assignment makes pointer from integer without a cast
sessreg.c:417: error: `O_WRONLY' undeclared (first use in this function)
sessreg.c:417: error: (Each undeclared identifier is reported only once
sessreg.c:417: error: for each function it appears in.)
sessreg.c:417: error: `O_APPEND' undeclared (first use in this function)
sessreg.c:431: error: `O_RDWR' undeclared (first use in this function)
make[1]: *** [sessreg-sessreg.o] Error 1
make[1]: Leaving directory `/var/tmp/portage/sessreg-1.0.0/work/sessreg-1.0.0'
make: *** [all] Error 2

!!! ERROR: x11-apps/sessreg-1.0.0 failed.
Call stack:
  ebuild.sh, line 1539:   Called dyn_compile
  ebuild.sh, line 939:   Called src_compile
  ebuild.sh, line 1248:   Called x-modular_src_compile
  x-modular.eclass, line 327:   Called x-modular_src_make
  x-modular.eclass, line 322:   Called die

!!! emake failed
!!! If you need support, post the topmost build error, and the call stack if relevant.