[...]

+ cd xgl
+ tar -xf -
+ /usr/bin/gzip -dc /home/users/builder/rpm/SOURCES/Mesa-20061103.tar.gz
+ STATUS=0 
+ '[' 0 -ne 0 ']'
+ /bin/id -u
+ '[' 10001 '=' 0 ']'
+ true .
+ /bin/chmod -Rf -Rf a+rX,u+w,g-w,o-w .
+ exit 0
Executing(%build): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/users/builder/bin TMPDIR=/tmp/B.dbf606  /bin/sh -e /tmp/B.dbf606/rpm-tmp.82451
TMP=/home/users/builder/tmp
HOME=/home/users/builder
PATH=/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/users/builder/bin
TMPDIR=/tmp/B.dbf606
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ cd xgl
+ libtoolize --copy --force --install
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './config.guess'
libtoolize: copying file './config.sub'
libtoolize: copying file './install-sh'
libtoolize: copying file './ltmain.sh'
libtoolize: You should add the contents of the following files to 'aclocal.m4':
libtoolize:   '/usr/share/aclocal/libtool.m4'
libtoolize:   '/usr/share/aclocal/ltoptions.m4'
libtoolize:   '/usr/share/aclocal/ltsugar.m4'
libtoolize:   '/usr/share/aclocal/ltversion.m4'
libtoolize:   '/usr/share/aclocal/lt~obsolete.m4'
libtoolize: Consider adding 'AC_CONFIG_MACRO_DIRS([m4])' to configure.ac,
libtoolize: and rerunning libtoolize and aclocal.
libtoolize: Consider adding '-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
+ aclocal
configure.ac:1601: error: AC_SUBST: `libdir exec_prefix prefix' is not a valid shell variable name
configure.ac:1601: the top level
autom4te: /usr/bin/m4 failed with exit status: 1
aclocal: error: echo failed with exit status: 1
error: Bad exit status from /tmp/B.dbf606/rpm-tmp.82451 (%build)
RPM build errors:
    Bad exit status from /tmp/B.dbf606/rpm-tmp.82451 (%build)
ended at: Wed Jul 22 18:58:29 2015, done in 01days 00h 00m 06s
error: No files produced.
mesg: ttyname failed: Inappropriate ioctl for device
Begin-PLD-Builder-Info
Build-Time: user:15.24s sys:5.96s real:43.93s (faults io:1 non-io:310273)
End-PLD-Builder-Info