diff --git a/mock/c7-exp-pi4.armhfp.cfg b/mock/c7-exp-pi4.armhfp.cfg
new file mode 100644
index 0000000..be1db84
--- /dev/null
+++ b/mock/c7-exp-pi4.armhfp.cfg
@@ -0,0 +1,136 @@
+config_opts['root'] = 'TARGETNAME' 
+config_opts['target_arch'] = 'armv7hl'
+config_opts['legal_host_arches'] = ('armv7l')
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-build'
+config_opts['dist'] = 'el7'  # only useful for --resultdir variable subst
+config_opts['extra_chroot_dirs'] = [ '/run/lock', ]
+config_opts['macros']['%dist'] = ".el7"
+config_opts['%centos_ver'] = "7"
+config_opts['macros']['%centos_ver'] = "7"
+config_opts['macros']['%rhel'] = "7"
+config_opts['macros']['%el7'] = "1"
+config_opts['macros']['%redhat'] = "7"
+config_opts['macros']['%vendor'] = "CentOS"
+config_opts['macros']['%packager'] = "CentOS BuildSystem <http://bugs.centos.org>"
+config_opts['macros']['%_vendor'] = "redhat"
+config_opts['macros']['%_vendor_host'] = "redhat"
+config_opts['macros']['%_host'] = "armv7hl-redhat-linux-gnu"
+#config_opts['macros']['%global _binaries_in_noarch_packages_terminate_build'] = "0"
+
+# no ccache in base repo
+config_opts['plugin_conf']['ccache_enable'] = False
+config_opts['plugin_conf']['yum_cache_enable'] = False
+
+config_opts['yum.conf'] = """
+[main]
+cachedir=/var/cache/yum
+keepcache=1
+debuglevel=2
+reposdir=/dev/null
+logfile=/var/log/yum.log
+retries=20
+obsoletes=1
+gpgcheck=0
+assumeyes=1
+syslog_ident=mock
+syslog_device=
+
+# repos
+
+[c7.1511.00.armhfp]
+name=c7.1511.00.armhfp
+baseurl=http://repohost/repo/c7.1511.00.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1511.u.armhfp]
+name=c7.1511.u.armhfp
+baseurl=http://repohost/repo/c7.1511.u.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1611.00.armhfp]
+name=c7.1611.00.armhfp
+baseurl=http://repohost/repo/c7.1611.00.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1611.u.armhfp]
+name=c7.1611.u.armhfp
+baseurl=http://repohost/repo/c7.1611.u.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1708.00.armhfp]
+name=c7.1708.00.armhfp
+baseurl=http://repohost/repo/c7.1708.00.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1708.u.armhfp]
+name=c7.1708.u.armhfp
+baseurl=http://repohost/repo/c7.1708.u.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1804.00.armhfp]
+name=c7.1804.00.armhfp
+baseurl=http://repohost/repo/c7.1804.00.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1804.u.armhfp]
+name=c7.1804.u.armhfp
+baseurl=http://repohost/repo/c7.1804.u.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7-kernels.armhfp]
+name=c7-kernels.armhfp
+baseurl=http://repohost/repo/c7-kernels.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7-exp.armhfp]
+name=c7-exp.armhfp
+baseurl=http://repohost/repo/c7-exp.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7-exp-pi4.armhfp]
+name=c7-exp-pi4.armhfp
+baseurl=http://repohost/repo/c7-exp-pi4.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1810.00.armhfp]
+name=c7.1810.00.armhfp
+baseurl=http://repohost/repo/c7.1810.00.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1810.u.armhfp]
+name=c7.1810.u.armhfp
+baseurl=http://repohost/repo/c7.1810.u.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1908.00.armhfp]
+name=c7.1908.00.armhfp
+baseurl=http://repohost/repo/c7.1908.00.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7.1908.u.armhfp]
+name=c7.1908.u.armhfp
+baseurl=http://repohost/repo/c7.1908.u.armhfp/
+enabled=1
+gpgcheck=0
+
+[c7-llvm-toolset-7.armhfp]
+name=c7-llvm-toolset-7.armhfp
+baseurl=http://repohost/repo/c7-llvm-toolset-7.armhfp/
+enabled=1
+gpgcheck=0
+"""
+
diff --git a/mock/c7-exp-pi4.cfg b/mock/c7-exp-pi4.cfg
deleted file mode 100644
index b7ebc66..0000000
--- a/mock/c7-exp-pi4.cfg
+++ /dev/null
@@ -1,131 +0,0 @@
-config_opts['root'] = 'TARGETNAME' 
-config_opts['target_arch'] = 'armv7hl'
-config_opts['legal_host_arches'] = ('armv7l')
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz'
-config_opts['dist'] = 'el7'  # only useful for --resultdir variable subst
-config_opts['extra_chroot_dirs'] = [ '/run/lock', ]
-config_opts['macros']['%dist'] = ".el7"
-config_opts['%centos_ver'] = "7"
-config_opts['macros']['%centos_ver'] = "7"
-config_opts['macros']['%rhel'] = "7"
-config_opts['macros']['%el7'] = "1"
-config_opts['macros']['%redhat'] = "7"
-config_opts['macros']['%vendor'] = "CentOS"
-config_opts['macros']['%packager'] = "CentOS BuildSystem <http://bugs.centos.org>"
-config_opts['macros']['%_vendor'] = "redhat"
-config_opts['macros']['%_vendor_host'] = "redhat"
-config_opts['macros']['%_host'] = "armv7hl-redhat-linux-gnu"
-#config_opts['macros']['%global _binaries_in_noarch_packages_terminate_build'] = "0"
-
-# no ccache in base repo
-config_opts['plugin_conf']['ccache_enable'] = False
-config_opts['plugin_conf']['yum_cache_enable'] = False
-
-config_opts['yum.conf'] = """
-[main]
-cachedir=/var/cache/yum
-keepcache=1
-debuglevel=2
-reposdir=/dev/null
-logfile=/var/log/yum.log
-retries=20
-obsoletes=1
-gpgcheck=0
-assumeyes=1
-syslog_ident=mock
-syslog_device=
-
-# repos
-
-[c7.1511.00.armhfp]
-name=c7.1511.00.armhfp
-baseurl=http://repohost/repo/c7.1511.00.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1511.u.armhfp]
-name=c7.1511.u.armhfp
-baseurl=http://repohost/repo/c7.1511.u.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1611.00.armhfp]
-name=c7.1611.00.armhfp
-baseurl=http://repohost/repo/c7.1611.00.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1611.u.armhfp]
-name=c7.1611.u.armhfp
-baseurl=http://repohost/repo/c7.1611.u.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1708.00.armhfp]
-name=c7.1708.00.armhfp
-baseurl=http://repohost/repo/c7.1708.00.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1708.u.armhfp]
-name=c7.1708.u.armhfp
-baseurl=http://repohost/repo/c7.1708.u.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1804.00.armhfp]
-name=c7.1804.00.armhfp
-baseurl=http://repohost/repo/c7.1804.00.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1804.u.armhfp]
-name=c7.1804.u.armhfp
-baseurl=http://repohost/repo/c7.1804.u.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7-kernels.armhfp]
-name=c7-kernels.armhfp
-baseurl=http://repohost/repo/c7-kernels.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7-exp.armhfp]
-name=c7-exp.armhfp
-baseurl=http://repohost/repo/c7-exp.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7-exp-pi4.armhfp]
-name=c7-exp-pi4.armhfp
-baseurl=http://repohost/repo/c7-exp-pi4.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1810.00.armhfp]
-name=c7.1810.00.armhfp
-baseurl=http://repohost/repo/c7.1810.00.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1810.u.armhfp]
-name=c7.1810.u.armhfp
-baseurl=http://repohost/repo/c7.1810.u.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1908.00.armhfp]
-name=c7.1908.00.armhfp
-baseurl=http://repohost/repo/c7.1908.00.armhfp/
-enabled=1
-gpgcheck=0
-
-[c7.1908.u.armhfp]
-name=c7.1908.u.armhfp
-baseurl=http://repohost/repo/c7.1908.u.armhfp/
-enabled=1
-gpgcheck=0
-
-"""
-
diff --git a/mock/c7-exp.aarch64.cfg b/mock/c7-exp.aarch64.cfg
index ad2c047..6da04bc 100644
--- a/mock/c7-exp.aarch64.cfg
+++ b/mock/c7-exp.aarch64.cfg
@@ -1,7 +1,7 @@
 config_opts['root'] = 'TARGETNAME'
 config_opts['target_arch'] = 'aarch64'
 config_opts['legal_host_arches'] = ('aarch64',)
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils centos-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz'
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils centos-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-build'
 config_opts['dist'] = 'el7'  # only useful for --resultdir variable subst
 
 config_opts['%centos_ver'] = "7"
@@ -80,4 +80,8 @@ name=c7.1908.00.aarch64
 baseurl=http://repohost/repo/c7.1908.00.aarch64/
 gpgcheck=0
 
+[c7-llvm-toolset-7.aarch64]
+name=c7-llvm-toolset-7.aarch64
+baseurl=http://repohost/repo/c7-llvm-toolset-7.aarch64/
+gpgcheck=0
 """
diff --git a/mock/c7-exp.armhfp.cfg b/mock/c7-exp.armhfp.cfg
index d787112..70f7728 100644
--- a/mock/c7-exp.armhfp.cfg
+++ b/mock/c7-exp.armhfp.cfg
@@ -1,7 +1,7 @@
 config_opts['root'] = 'TARGETNAME' 
 config_opts['target_arch'] = 'armv7hl'
 config_opts['legal_host_arches'] = ('armv7l')
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz'
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-build'
 config_opts['dist'] = 'el7'  # only useful for --resultdir variable subst
 config_opts['extra_chroot_dirs'] = [ '/run/lock', ]
 config_opts['macros']['%dist'] = ".el7"
@@ -121,5 +121,11 @@ baseurl=http://repohost/repo/c7.1908.u.armhfp/
 enabled=1
 gpgcheck=0
 
+[c7-llvm-toolset-7.armhfp]
+name=c7-llvm-toolset-7.armhfp
+baseurl=http://repohost/repo/c7-llvm-toolset-7.armhfp/
+enabled=1
+gpgcheck=0
+
 """
 
diff --git a/mock/c7-exp.i386.cfg b/mock/c7-exp.i386.cfg
index 8cf5ef0..d343c76 100644
--- a/mock/c7-exp.i386.cfg
+++ b/mock/c7-exp.i386.cfg
@@ -1,7 +1,7 @@
 config_opts['root'] = 'TARGETNAME'
 config_opts['target_arch'] = 'i686'
 config_opts['legal_host_arches'] = ('i386', 'i486', 'i586', 'i686', 'x86_64',)
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz'
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-build'
 config_opts['dist'] = 'el7'  # only useful for --resultdir variable subst
 
 config_opts['%centos_ver'] = "7"
@@ -182,4 +182,10 @@ enabled=1
 cost=625
 baseurl=http://repohost/repo/c7-exp.i386/
 
+[c7-llvm-toolset-7.i386]
+name=c7-llvm-toolset-7.i386
+enabled=1
+cost=625
+baseurl=http://repohost/repo/c7-llvm-toolset-7.i386/
+
 """
diff --git a/mock/c7-exp.noarch.cfg b/mock/c7-exp.noarch.cfg
index ad648a8..02d981b 100644
--- a/mock/c7-exp.noarch.cfg
+++ b/mock/c7-exp.noarch.cfg
@@ -1,7 +1,7 @@
 config_opts['root'] = 'TARGETNAME'
 config_opts['target_arch'] = 'noarch'
 config_opts['legal_host_arches'] = ('x86_64',)
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz'
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-build'
 config_opts['dist'] = 'el7'  # only useful for --resultdir variable subst
 
 config_opts['%centos_ver'] = "7"
@@ -195,5 +195,12 @@ includepkgs=*.x86_64 *.noarch glibc.i686 glibc-devel.i686 nss-softokn-freebl*.i6
 name=c7-exp.x86_64
 enabled=1
 cost=625
+includepkgs=*.x86_64 *.noarch glibc.i686 glibc-devel.i686 nss-softokn-freebl*.i686
+
+[c7-llvm-toolset-7.x86_64]
+name=c7-llvm-toolset-7.x86_64
+enabled=1
+cost=625
+includepkgs=*.x86_64 *.noarch glibc.i686 glibc-devel.i686 nss-softokn-freebl*.i686
 
 """
diff --git a/mock/c7-exp.x86_64.cfg b/mock/c7-exp.x86_64.cfg
index ca49212..ec1a430 100644
--- a/mock/c7-exp.x86_64.cfg
+++ b/mock/c7-exp.x86_64.cfg
@@ -1,7 +1,7 @@
 config_opts['root'] = 'TARGETNAME'
 config_opts['target_arch'] = 'x86_64'
 config_opts['legal_host_arches'] = ('x86_64',)
-config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz'
+config_opts['chroot_setup_cmd'] = 'install bash bzip2 coreutils cpio diffutils system-release findutils gawk gcc gcc-c++ grep gzip info make patch redhat-rpm-config rpm-build sed shadow-utils tar unzip util-linux which xz scl-build'
 config_opts['dist'] = 'el7'  # only useful for --resultdir variable subst
 
 config_opts['%centos_ver'] = "7"
@@ -197,4 +197,11 @@ enabled=1
 cost=625
 baseurl=http://repohost/repo/c7-exp.x86_64/
 includepkgs=*.x86_64 *.noarch glibc.i686 glibc-devel.i686 nss-softokn-freebl*.i686
+
+[c7-llvm-toolset-7.x86_64]
+name=c7-llvm-toolset-7.x86_64
+enabled=1
+cost=625
+baseurl=http://repohost/repo/c7-llvm-toolset-7.x86_64/
+includepkgs=*.x86_64 *.noarch glibc.i686 glibc-devel.i686 nss-softokn-freebl*.i686
 """