diff --git a/README.md b/README.md
index 15ed7dfa..3a0ec84b 100644
--- a/README.md
+++ b/README.md
@@ -604,6 +604,8 @@ register_repo("conda-forge", "cdt-builds", config=cfg)
 | [`mesa-libglapi-cos7-aarch64`](https://anaconda.org/conda-forge/mesa-libglapi-cos7-aarch64) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/mesa-libglapi-cos7-aarch64.svg)](https://anaconda.org/conda-forge/mesa-libglapi-cos7-aarch64) |
 | [`mesa-libglapi-cos7-ppc64le`](https://anaconda.org/conda-forge/mesa-libglapi-cos7-ppc64le) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/mesa-libglapi-cos7-ppc64le.svg)](https://anaconda.org/conda-forge/mesa-libglapi-cos7-ppc64le) |
 | [`mesa-libglapi-cos7-x86_64`](https://anaconda.org/conda-forge/mesa-libglapi-cos7-x86_64) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/mesa-libglapi-cos7-x86_64.svg)](https://anaconda.org/conda-forge/mesa-libglapi-cos7-x86_64) |
+| [`mesa-libglu-cos6-x86_64`](https://anaconda.org/conda-forge/mesa-libglu-cos6-x86_64) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/mesa-libglu-cos6-x86_64.svg)](https://anaconda.org/conda-forge/mesa-libglu-cos6-x86_64) |
+| [`mesa-libglu-devel-cos6-x86_64`](https://anaconda.org/conda-forge/mesa-libglu-devel-cos6-x86_64) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/mesa-libglu-devel-cos6-x86_64.svg)](https://anaconda.org/conda-forge/mesa-libglu-devel-cos6-x86_64) |
 | [`nspr-cos6-x86_64`](https://anaconda.org/conda-forge/nspr-cos6-x86_64) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/nspr-cos6-x86_64.svg)](https://anaconda.org/conda-forge/nspr-cos6-x86_64) |
 | [`nspr-cos7-aarch64`](https://anaconda.org/conda-forge/nspr-cos7-aarch64) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/nspr-cos7-aarch64.svg)](https://anaconda.org/conda-forge/nspr-cos7-aarch64) |
 | [`nspr-cos7-ppc64le`](https://anaconda.org/conda-forge/nspr-cos7-ppc64le) | [![Conda Version](https://img.shields.io/conda/vn/conda-forge/nspr-cos7-ppc64le.svg)](https://anaconda.org/conda-forge/nspr-cos7-ppc64le) |
diff --git a/cdt_slugs.yaml b/cdt_slugs.yaml
index 2f2aecdd..b2d1964c 100644
--- a/cdt_slugs.yaml
+++ b/cdt_slugs.yaml
@@ -591,6 +591,18 @@ mesa-libGL:
 mesa-libGL-devel:
   custom: false
   license_file: licenses/mesa-license
+mesa-libGLU:
+  custom: true
+  license_file: licenses/mesa-license
+  build_append:
+    cos7-x86_64: |
+      pushd ${SYSROOT_DIR}/usr/lib64 > /dev/null 2>&1
+      rm libGLX_system.so.0
+      ln -s libGLX_mesa.so.0 libGLX_system.so.0
+      popd > /dev/null 2>&1
+mesa-libGLU-devel:
+  custom: true
+  license_file: licenses/mesa-license
 mesa-libglapi:
   custom: false
   skipped_cdts:
diff --git a/custom_cdts/mesa-libglu-cos6-x86_64/build.sh b/custom_cdts/mesa-libglu-cos6-x86_64/build.sh
new file mode 100755
index 00000000..44dc3055
--- /dev/null
+++ b/custom_cdts/mesa-libglu-cos6-x86_64/build.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+set -o errexit -o pipefail
+
+SYSROOT_DIR="${PREFIX}"/x86_64-conda-linux-gnu/sysroot
+
+mkdir -p "${SYSROOT_DIR}"
+if [[ -d usr/lib ]]; then
+  if [[ ! -d lib ]]; then
+    ln -s usr/lib lib
+  fi
+fi
+if [[ -d usr/lib64 ]]; then
+  if [[ ! -d lib64 ]]; then
+    ln -s usr/lib64 lib64
+  fi
+fi
+pushd ${SRC_DIR}/binary > /dev/null 2>&1
+rsync -K -a . "${SYSROOT_DIR}"
+popd > /dev/null 2>&1
+
+# START OF INSERTED BUILD APPENDS
+
+# END OF INSERTED BUILD APPENDS
+
+# this code makes sure that any symlinks are relative and their targets exist
+# the CDT would fail at test time, but doing it here produces useful error
+# messages for fixing things
+error_code=0
+for blnk in $(find ./binary -type l); do
+  # loop is over symlinks in the RPM, so get the path in the sysroot
+  lnk=${SYSROOT_DIR}${blnk#"./binary"}
+
+  # if it is not a link in the sysroot, move on
+  if [[ ! -L ${lnk} ]]; then
+    continue
+  fi
+
+  # get the link dir and the destination of the link
+  lnk_dir=$(dirname ${lnk})
+  lnk_dst_nm=$(readlink ${lnk})
+  if [[ ${lnk_dst_nm:0:1} == "/" ]]; then
+    lnk_dst=${lnk_dst_nm}
+  else
+    lnk_dst="${lnk_dir}/${lnk_dst_nm}"
+  fi
+
+  # now test if it is absolute and relative to the system and not the PREFIX
+  # also test if the dest file exists
+  if [[ ${lnk_dst_nm:0:1} == "/" ]] && [[ ! ${lnk_dst_nm} == ${SYSROOT_DIR}* ]]; then
+    echo "***WARNING ABSOLUTE SYMLINK***: ${lnk} -> ${lnk_dst}"
+    error_code=1
+  elif [[ ! -e "${lnk_dst}" ]]; then
+     echo "***WARNING SYMLINK W/O DESTINATION: ${lnk} -> ${lnk_dst}"
+     error_code=1
+  fi
+done
+
+exit ${error_code}
diff --git a/custom_cdts/mesa-libglu-cos6-x86_64/mesa-license b/custom_cdts/mesa-libglu-cos6-x86_64/mesa-license
new file mode 100644
index 00000000..d583db45
--- /dev/null
+++ b/custom_cdts/mesa-libglu-cos6-x86_64/mesa-license
@@ -0,0 +1,19 @@
+Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/custom_cdts/mesa-libglu-cos6-x86_64/meta.yaml b/custom_cdts/mesa-libglu-cos6-x86_64/meta.yaml
new file mode 100644
index 00000000..9c50b134
--- /dev/null
+++ b/custom_cdts/mesa-libglu-cos6-x86_64/meta.yaml
@@ -0,0 +1,40 @@
+package:
+  name: mesa-libglu-cos6-x86_64
+  version: 11.0.7
+
+source:
+  - url: https://vault.centos.org/6.10/os/x86_64/Packages/mesa-libGLU-11.0.7-4.el6.x86_64.rpm
+    sha256: b56e0217bf287fa0211ce209a2180305b74d93d867c6dee91e55a46b5da78508
+    no_hoist: true
+    folder: binary
+
+build:
+  number: {{ cdt_build_number|int + 1000 }}
+  noarch: generic
+  binary_relocation: false
+  detect_binary_files_with_prefix: false
+  missing_dso_whitelist:
+    - '*'
+
+requirements:
+  host:
+    - sysroot_linux-64 2.12.*
+  run:
+    - sysroot_linux-64 2.12.*
+
+test:
+  commands:
+    - echo "it installs!"
+
+about:
+  home: http://www.mesa3d.org
+  license: MIT
+  license_family: MIT
+  license_file: mesa-license
+  summary: (CDT) Mesa libGL development package
+  description: |
+    Mesa libGL development package
+
+extra:
+  recipe-maintainers:
+    - conda-forge/help-cdts
diff --git a/custom_cdts/mesa-libglu-cos7-x86_64/build.sh b/custom_cdts/mesa-libglu-cos7-x86_64/build.sh
new file mode 100755
index 00000000..3551d114
--- /dev/null
+++ b/custom_cdts/mesa-libglu-cos7-x86_64/build.sh
@@ -0,0 +1,55 @@
+#!/bin/bash
+
+set -o errexit -o pipefail
+
+SYSROOT_DIR="${PREFIX}"/x86_64-conda-linux-gnu/sysroot
+
+mkdir -p "${SYSROOT_DIR}"
+if [[ -d usr/lib ]]; then
+  if [[ ! -d lib ]]; then
+    ln -s usr/lib lib
+  fi
+fi
+if [[ -d usr/lib64 ]]; then
+  if [[ ! -d lib64 ]]; then
+    ln -s usr/lib64 lib64
+  fi
+fi
+pushd ${SRC_DIR}/binary > /dev/null 2>&1
+rsync -K -a . "${SYSROOT_DIR}"
+popd > /dev/null 2>&1
+
+# this code makes sure that any symlinks are relative and their targets exist
+# the CDT would fail at test time, but doing it here produces useful error
+# messages for fixing things
+error_code=0
+for blnk in $(find ./binary -type l); do
+  # loop is over symlinks in the RPM, so get the path in the sysroot
+  lnk=${SYSROOT_DIR}${blnk#"./binary"}
+
+  # if it is not a link in the sysroot, move on
+  if [[ ! -L ${lnk} ]]; then
+    continue
+  fi
+
+  # get the link dir and the destination of the link
+  lnk_dir=$(dirname ${lnk})
+  lnk_dst_nm=$(readlink ${lnk})
+  if [[ ${lnk_dst_nm:0:1} == "/" ]]; then
+    lnk_dst=${lnk_dst_nm}
+  else
+    lnk_dst="${lnk_dir}/${lnk_dst_nm}"
+  fi
+
+  # now test if it is absolute and relative to the system and not the PREFIX
+  # also test if the dest file exists
+  if [[ ${lnk_dst_nm:0:1} == "/" ]] && [[ ! ${lnk_dst_nm} == ${SYSROOT_DIR}* ]]; then
+    echo "***WARNING ABSOLUTE SYMLINK***: ${lnk} -> ${lnk_dst}"
+    error_code=1
+  elif [[ ! -e "${lnk_dst}" ]]; then
+     echo "***WARNING SYMLINK W/O DESTINATION: ${lnk} -> ${lnk_dst}"
+     error_code=1
+  fi
+done
+
+exit ${error_code}
diff --git a/custom_cdts/mesa-libglu-cos7-x86_64/mesa-license b/custom_cdts/mesa-libglu-cos7-x86_64/mesa-license
new file mode 100644
index 00000000..d583db45
--- /dev/null
+++ b/custom_cdts/mesa-libglu-cos7-x86_64/mesa-license
@@ -0,0 +1,19 @@
+Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/custom_cdts/mesa-libglu-cos7-x86_64/meta.yaml b/custom_cdts/mesa-libglu-cos7-x86_64/meta.yaml
new file mode 100644
index 00000000..f57358b0
--- /dev/null
+++ b/custom_cdts/mesa-libglu-cos7-x86_64/meta.yaml
@@ -0,0 +1,50 @@
+package:
+  name: mesa-libglu-cos7-x86_64
+  version: 9.0.0
+
+source:
+  - url: http://mirror.centos.org/centos/7/os/x86_64/Packages/mesa-libGLU-9.0.0-4.el7.x86_64.rpm
+    sha256: b21eb09f310635c5f6c426f2013e9cab95c95f1446522a575c16a58099ee465b
+    no_hoist: true
+    folder: binary
+
+build:
+  number: {{ cdt_build_number|int + 1000 }}
+  noarch: generic
+  binary_relocation: false
+  detect_binary_files_with_prefix: false
+  missing_dso_whitelist:
+    - '*'
+
+requirements:
+  build:
+    - libdrm-cos7-x86_64 >=2.4.83 *_{{ cdt_build_number|int + 1000 }}
+    - libglvnd-glx-cos7-x86_64 >=1.0.1 *_{{ cdt_build_number|int + 1000 }}
+    - mesa-libglapi-cos7-x86_64 ==18.3.4 *_{{ cdt_build_number|int + 1000 }}
+  host:
+    - libdrm-cos7-x86_64 >=2.4.83 *_{{ cdt_build_number|int + 1000 }}
+    - libglvnd-glx-cos7-x86_64 >=1.0.1 *_{{ cdt_build_number|int + 1000 }}
+    - mesa-libglapi-cos7-x86_64 ==18.3.4 *_{{ cdt_build_number|int + 1000 }}
+    - sysroot_linux-64 2.17.*
+  run:
+    - libdrm-cos7-x86_64 >=2.4.83 *_{{ cdt_build_number|int + 1000 }}
+    - libglvnd-glx-cos7-x86_64 >=1.0.1 *_{{ cdt_build_number|int + 1000 }}
+    - mesa-libglapi-cos7-x86_64 ==18.3.4 *_{{ cdt_build_number|int + 1000 }}
+    - sysroot_linux-64 2.17.*
+
+test:
+  commands:
+    - echo "it installs!"
+
+about:
+  home: http://www.mesa3d.org
+  license: MIT
+  license_family: MIT
+  license_file: mesa-license
+  summary: (CDT) Mesa libGLU runtime libraries
+  description: |
+    Mesa libGLU runtime library.
+
+extra:
+  recipe-maintainers:
+    - conda-forge/help-cdts
diff --git a/custom_cdts/mesa-libglu-devel-cos6-x86_64/build.sh b/custom_cdts/mesa-libglu-devel-cos6-x86_64/build.sh
new file mode 100755
index 00000000..44dc3055
--- /dev/null
+++ b/custom_cdts/mesa-libglu-devel-cos6-x86_64/build.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+set -o errexit -o pipefail
+
+SYSROOT_DIR="${PREFIX}"/x86_64-conda-linux-gnu/sysroot
+
+mkdir -p "${SYSROOT_DIR}"
+if [[ -d usr/lib ]]; then
+  if [[ ! -d lib ]]; then
+    ln -s usr/lib lib
+  fi
+fi
+if [[ -d usr/lib64 ]]; then
+  if [[ ! -d lib64 ]]; then
+    ln -s usr/lib64 lib64
+  fi
+fi
+pushd ${SRC_DIR}/binary > /dev/null 2>&1
+rsync -K -a . "${SYSROOT_DIR}"
+popd > /dev/null 2>&1
+
+# START OF INSERTED BUILD APPENDS
+
+# END OF INSERTED BUILD APPENDS
+
+# this code makes sure that any symlinks are relative and their targets exist
+# the CDT would fail at test time, but doing it here produces useful error
+# messages for fixing things
+error_code=0
+for blnk in $(find ./binary -type l); do
+  # loop is over symlinks in the RPM, so get the path in the sysroot
+  lnk=${SYSROOT_DIR}${blnk#"./binary"}
+
+  # if it is not a link in the sysroot, move on
+  if [[ ! -L ${lnk} ]]; then
+    continue
+  fi
+
+  # get the link dir and the destination of the link
+  lnk_dir=$(dirname ${lnk})
+  lnk_dst_nm=$(readlink ${lnk})
+  if [[ ${lnk_dst_nm:0:1} == "/" ]]; then
+    lnk_dst=${lnk_dst_nm}
+  else
+    lnk_dst="${lnk_dir}/${lnk_dst_nm}"
+  fi
+
+  # now test if it is absolute and relative to the system and not the PREFIX
+  # also test if the dest file exists
+  if [[ ${lnk_dst_nm:0:1} == "/" ]] && [[ ! ${lnk_dst_nm} == ${SYSROOT_DIR}* ]]; then
+    echo "***WARNING ABSOLUTE SYMLINK***: ${lnk} -> ${lnk_dst}"
+    error_code=1
+  elif [[ ! -e "${lnk_dst}" ]]; then
+     echo "***WARNING SYMLINK W/O DESTINATION: ${lnk} -> ${lnk_dst}"
+     error_code=1
+  fi
+done
+
+exit ${error_code}
diff --git a/custom_cdts/mesa-libglu-devel-cos6-x86_64/mesa-license b/custom_cdts/mesa-libglu-devel-cos6-x86_64/mesa-license
new file mode 100644
index 00000000..d583db45
--- /dev/null
+++ b/custom_cdts/mesa-libglu-devel-cos6-x86_64/mesa-license
@@ -0,0 +1,19 @@
+Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/custom_cdts/mesa-libglu-devel-cos6-x86_64/meta.yaml b/custom_cdts/mesa-libglu-devel-cos6-x86_64/meta.yaml
new file mode 100644
index 00000000..0443edab
--- /dev/null
+++ b/custom_cdts/mesa-libglu-devel-cos6-x86_64/meta.yaml
@@ -0,0 +1,44 @@
+package:
+  name: mesa-libglu-devel-cos6-x86_64
+  version: 11.0.7
+
+source:
+  - url: https://vault.centos.org/6.10/os/x86_64/Packages/mesa-libGLU-devel-11.0.7-4.el6.x86_64.rpm
+    sha256: b9ddb0d38fed0050b9145b6bb69b2fc6ee014df9bf3004316d222cf5bd8f167b
+    no_hoist: true
+    folder: binary
+
+build:
+  number: {{ cdt_build_number|int + 1000 }}
+  noarch: generic
+  binary_relocation: false
+  detect_binary_files_with_prefix: false
+  missing_dso_whitelist:
+    - '*'
+
+requirements:
+  build:
+    - mesa-libglu-cos6-x86_64 ==11.0.7 *_{{ cdt_build_number|int + 1000 }}
+  host:
+    - mesa-libglu-cos6-x86_64 ==11.0.7 *_{{ cdt_build_number|int + 1000 }}
+    - sysroot_linux-64 2.12.*
+  run:
+    - mesa-libglu-cos6-x86_64 ==11.0.7 *_{{ cdt_build_number|int + 1000 }}
+    - sysroot_linux-64 2.12.*
+
+test:
+  commands:
+    - echo "it installs!"
+
+about:
+  home: http://www.mesa3d.org
+  license: MIT
+  license_family: MIT
+  license_file: mesa-license
+  summary: (CDT) Mesa libGL development package
+  description: |
+    Mesa libGL development package
+
+extra:
+  recipe-maintainers:
+    - conda-forge/help-cdts
diff --git a/custom_cdts/mesa-libglu-devel-cos7-x86_64/build.sh b/custom_cdts/mesa-libglu-devel-cos7-x86_64/build.sh
new file mode 100755
index 00000000..44dc3055
--- /dev/null
+++ b/custom_cdts/mesa-libglu-devel-cos7-x86_64/build.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+set -o errexit -o pipefail
+
+SYSROOT_DIR="${PREFIX}"/x86_64-conda-linux-gnu/sysroot
+
+mkdir -p "${SYSROOT_DIR}"
+if [[ -d usr/lib ]]; then
+  if [[ ! -d lib ]]; then
+    ln -s usr/lib lib
+  fi
+fi
+if [[ -d usr/lib64 ]]; then
+  if [[ ! -d lib64 ]]; then
+    ln -s usr/lib64 lib64
+  fi
+fi
+pushd ${SRC_DIR}/binary > /dev/null 2>&1
+rsync -K -a . "${SYSROOT_DIR}"
+popd > /dev/null 2>&1
+
+# START OF INSERTED BUILD APPENDS
+
+# END OF INSERTED BUILD APPENDS
+
+# this code makes sure that any symlinks are relative and their targets exist
+# the CDT would fail at test time, but doing it here produces useful error
+# messages for fixing things
+error_code=0
+for blnk in $(find ./binary -type l); do
+  # loop is over symlinks in the RPM, so get the path in the sysroot
+  lnk=${SYSROOT_DIR}${blnk#"./binary"}
+
+  # if it is not a link in the sysroot, move on
+  if [[ ! -L ${lnk} ]]; then
+    continue
+  fi
+
+  # get the link dir and the destination of the link
+  lnk_dir=$(dirname ${lnk})
+  lnk_dst_nm=$(readlink ${lnk})
+  if [[ ${lnk_dst_nm:0:1} == "/" ]]; then
+    lnk_dst=${lnk_dst_nm}
+  else
+    lnk_dst="${lnk_dir}/${lnk_dst_nm}"
+  fi
+
+  # now test if it is absolute and relative to the system and not the PREFIX
+  # also test if the dest file exists
+  if [[ ${lnk_dst_nm:0:1} == "/" ]] && [[ ! ${lnk_dst_nm} == ${SYSROOT_DIR}* ]]; then
+    echo "***WARNING ABSOLUTE SYMLINK***: ${lnk} -> ${lnk_dst}"
+    error_code=1
+  elif [[ ! -e "${lnk_dst}" ]]; then
+     echo "***WARNING SYMLINK W/O DESTINATION: ${lnk} -> ${lnk_dst}"
+     error_code=1
+  fi
+done
+
+exit ${error_code}
diff --git a/custom_cdts/mesa-libglu-devel-cos7-x86_64/mesa-license b/custom_cdts/mesa-libglu-devel-cos7-x86_64/mesa-license
new file mode 100644
index 00000000..d583db45
--- /dev/null
+++ b/custom_cdts/mesa-libglu-devel-cos7-x86_64/mesa-license
@@ -0,0 +1,19 @@
+Copyright (C) 1999-2007  Brian Paul   All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/custom_cdts/mesa-libglu-devel-cos7-x86_64/meta.yaml b/custom_cdts/mesa-libglu-devel-cos7-x86_64/meta.yaml
new file mode 100644
index 00000000..e625bb13
--- /dev/null
+++ b/custom_cdts/mesa-libglu-devel-cos7-x86_64/meta.yaml
@@ -0,0 +1,47 @@
+package:
+  name: mesa-libglu-devel-cos7-x86_64
+  version: 9.0.0
+
+source:
+  - url: http://mirror.centos.org/centos/7/os/x86_64/Packages/mesa-libGLU-devel-9.0.0-4.el7.x86_64.rpm
+    sha256: 16a6d263808c9fdce8fd2a8485bcf6573ff6c32921528dd2eb0d57d4351bae29
+    no_hoist: true
+    folder: binary
+
+build:
+  number: {{ cdt_build_number|int + 1000 }}
+  noarch: generic
+  binary_relocation: false
+  detect_binary_files_with_prefix: false
+  missing_dso_whitelist:
+    - '*'
+
+requirements:
+  build:
+    - mesa-khr-devel-cos7-x86_64 ==18.3.4 *_{{ cdt_build_number|int + 1000 }}
+    - mesa-libglu-cos7-x86_64 ==9.0.0 *_{{ cdt_build_number|int + 1000 }}
+  host:
+    - mesa-khr-devel-cos7-x86_64 ==18.3.4 *_{{ cdt_build_number|int + 1000 }}
+    - mesa-libglu-cos7-x86_64 ==9.0.0 *_{{ cdt_build_number|int + 1000 }}
+    - sysroot_linux-64 2.17.*
+  run:
+    - mesa-khr-devel-cos7-x86_64 ==18.3.4 *_{{ cdt_build_number|int + 1000 }}
+    - mesa-libglu-cos7-x86_64 ==9.0.0 *_{{ cdt_build_number|int + 1000 }}
+    - sysroot_linux-64 2.17.*
+
+test:
+  commands:
+    - echo "it installs!"
+
+about:
+  home: http://www.mesa3d.org
+  license: MIT
+  license_family: MIT
+  license_file: mesa-license
+  summary: (CDT) Mesa libGLU development package
+  description: |
+    Mesa libGLU development package
+
+extra:
+  recipe-maintainers:
+    - conda-forge/help-cdts
diff --git a/print_all_files b/print_all_files
new file mode 100755
index 00000000..86c2690d
--- /dev/null
+++ b/print_all_files
@@ -0,0 +1,24 @@
+#!/usr/bin/env sh
+
+# Print all files provided by CDT packages.
+#
+# Original author: David Banas <capn.freako@gmail.com>
+# Original date:   March 23, 2023
+#
+# Copyright (c) 2023 David Banas; all rights reserved World wide.
+
+# License is hereby granted to all to do anything and everything with this code,
+# as long as the above copyright notice and licensing granted herein are
+# included and maintained in any distributed copies and/or derivative works.
+
+rm -rf rpms/ 2>/dev/null
+mkdir rpms
+for url in $(grep 'url:' cdts/*/meta.yaml | cut -f 2- -w | grep '^-' | cut -f 3 -w);
+  do curl --output "rpms/${url##*/}" $url;
+  done
+for rpm in $(ls rpms/);
+  do echo "\n${rpm}";
+     echo "==========";
+     tar tf "rpms/${rpm}" | sort;
+  done
+