[...]

There are 3 packages to install (2 marked by dependencies):
I clang-devel-3.9.1-1.i686
D clang-3.9.1-1.i686  clang-libs-3.9.1-1.i686
This operation will use 337.7MB of disk space.
Need to get 90.2MB of archives. 
Executing pm-command.sh --upgrade -vh --root / --define _check_dirname_deps 1...
Preparing...                ##################################################
clang-libs                  ##################################################
clang                       ##################################################
clang-devel                 ##################################################
Installing set #2
Processing dependencies...
There are 1 package to install:
I ocl-icd-devel-2.2.12-1.i686
This operation will use 63.8KB of disk space.
Need to get 10.3KB of archives. 
Executing pm-command.sh --upgrade -vh --root / --define _check_dirname_deps 1...
Preparing...                ##################################################
ocl-icd-devel               ##################################################
Installing set #3
Processing dependencies...
xorg-xserver-server-devel-1.20.0-1.i686 marks xorg-lib-libXfont2-devel-2.0.3-1.i686 (cap xorg-lib-libXfont2-devel >= 2.0.0)
There are 2 packages to install (1 marked by dependencies):
I xorg-xserver-server-devel-1.20.0-1.i686
D xorg-lib-libXfont2-devel-2.0.3-1.i686
This operation will use 1.5MB of disk space.
Need to get 281.7KB of archives. 
Executing pm-command.sh --upgrade -vh --root / --define _check_dirname_deps 1...
Preparing...                ##################################################
xorg-lib-libXfont2-devel    ##################################################
xorg-xserver-server-devel   ##################################################
building RPM using: set -ex; : build-id: 10328b73-13c1-4e8a-b5fe-1235e5f20e12; TMPDIR=/tmp/B.fg5xBz/BUILD/tmp exec nice -n 19 rpmbuild -bb --define '_smp_mflags -j8' --define '_tld_builder 1' --define '_topdir /tmp/B.fg5xBz' --define '_specdir %{_topdir}' --define '_sourcedir %{_specdir}' --define '_rpmdir %{_topdir}/RPMS' --define '_builddir %{_topdir}/BUILD'  --target i686-tld-linux /tmp/B.fg5xBz/Mesa.spec
mesg: ttyname failed: Inappropriate ioctl for device
+ : build-id: 10328b73-13c1-4e8a-b5fe-1235e5f20e12
+ TMPDIR=/tmp/B.fg5xBz/BUILD/tmp
+ exec nice -n 19 rpmbuild -bb --define '_smp_mflags -j8' --define '_tld_builder 1' --define '_topdir /tmp/B.fg5xBz' --define '_specdir %{_topdir}' --define '_sourcedir %{_specdir}' --define '_rpmdir %{_topdir}/RPMS' --define '_builddir %{_topdir}/BUILD' --target i686-tld-linux /tmp/B.fg5xBz/Mesa.spec
error: Failed build dependencies:
	llvm-devel >= 4.0 is needed by Mesa-18.1.7-1.src
Building target platforms: i686-tld-linux
ended at: Mon Sep  3 21:39:32 2018, done in 0:00:00.162405
error: No files produced.
mesg: ttyname failed: Inappropriate ioctl for device
+ chmod -R u+rwX /tmp/B.fg5xBz/BUILD
+ rm -rf /tmp/B.fg5xBz/tmp /tmp/B.fg5xBz/BUILD
mesg: ttyname failed: Inappropriate ioctl for device
+ rm -rf /tmp/B.fg5xBz
Begin-TLD-Builder-Info
Build-Time: user:15.36s sys:1.63s real:37.93s (faults io:0 non-io:166804)
End-TLD-Builder-Info