diff --git a/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@10.1.243-gcc@4.9.3.cmake b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@10.1.243-gcc@4.9.3.cmake
new file mode 100644
index 00000000..58ecdc3f
--- /dev/null
+++ b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@10.1.243-gcc@4.9.3.cmake
@@ -0,0 +1,14 @@
+##############################################################
+# Copyright 2021 Lawrence Livermore National Security, LLC
+# (c.f. AUTHORS, NOTICE.LLNS, COPYING)
+#
+# This file is part of the Flux resource manager framework.
+# For details, see https://github.com/flux-framework.
+#
+# SPDX-License-Identifier: LGPL-3.0
+##############################################################
+
+set(CMAKE_C_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-10.1.243-gcc-4.9.3/bin/clang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-10.1.243-gcc-4.9.3/bin/clang++" CACHE PATH "")
+set(LLVM_DIR "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-10.1.243-gcc-4.9.3/lib/cmake/llvm" CACHE PATH "")
+set(FLEX_EXECUTABLE "/usr/tcetmp/packages/flex/flex-2.6.4/bin/flex" CACHE PATH "")
diff --git a/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@10.1.243-gcc@8.3.1.cmake b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@10.1.243-gcc@8.3.1.cmake
new file mode 100644
index 00000000..c5d70bcd
--- /dev/null
+++ b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@10.1.243-gcc@8.3.1.cmake
@@ -0,0 +1,14 @@
+##############################################################
+# Copyright 2021 Lawrence Livermore National Security, LLC
+# (c.f. AUTHORS, NOTICE.LLNS, COPYING)
+#
+# This file is part of the Flux resource manager framework.
+# For details, see https://github.com/flux-framework.
+#
+# SPDX-License-Identifier: LGPL-3.0
+##############################################################
+
+set(CMAKE_C_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-10.1.243-gcc-8.3.1/bin/clang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-10.1.243-gcc-8.3.1/bin/clang++" CACHE PATH "")
+set(LLVM_DIR "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-10.1.243-gcc-8.3.1/lib/cmake/llvm" CACHE PATH "")
+set(FLEX_EXECUTABLE "/usr/tcetmp/packages/flex/flex-2.6.4/bin/flex" CACHE PATH "")
diff --git a/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.2.0-gcc@8.3.1 b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.2.0-gcc@8.3.1
new file mode 100644
index 00000000..88d881f5
--- /dev/null
+++ b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.2.0-gcc@8.3.1
@@ -0,0 +1,14 @@
+##############################################################
+# Copyright 2021 Lawrence Livermore National Security, LLC
+# (c.f. AUTHORS, NOTICE.LLNS, COPYING)
+#
+# This file is part of the Flux resource manager framework.
+# For details, see https://github.com/flux-framework.
+#
+# SPDX-License-Identifier: LGPL-3.0
+##############################################################
+
+set(CMAKE_C_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.2.0-gcc-8.3.1/bin/clang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.2.0-gcc-8.3.1/bin/clang++" CACHE PATH "")
+set(LLVM_DIR "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.2.0-gcc-8.3.1/lib/cmake/llvm" CACHE PATH "")
+set(FLEX_EXECUTABLE "/usr/tcetmp/packages/flex/flex-2.6.4/bin/flex" CACHE PATH "")
diff --git a/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.8.0-gcc@11.2.1 b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.8.0-gcc@11.2.1
new file mode 100644
index 00000000..ab626a5d
--- /dev/null
+++ b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.8.0-gcc@11.2.1
@@ -0,0 +1,14 @@
+##############################################################
+# Copyright 2021 Lawrence Livermore National Security, LLC
+# (c.f. AUTHORS, NOTICE.LLNS, COPYING)
+#
+# This file is part of the Flux resource manager framework.
+# For details, see https://github.com/flux-framework.
+#
+# SPDX-License-Identifier: LGPL-3.0
+##############################################################
+
+set(CMAKE_C_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.8.0-gcc-8.3.1/bin/clang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.8.0-gcc-8.3.1/bin/clang++" CACHE PATH "")
+set(LLVM_DIR "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.8.0-gcc-8.3.1/lib/cmake/llvm" CACHE PATH "")
+set(FLEX_EXECUTABLE "/usr/tcetmp/packages/flex/flex-2.6.4/bin/flex" CACHE PATH "")
diff --git a/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.8.0-gcc@8.3.1 b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.8.0-gcc@8.3.1
new file mode 100644
index 00000000..14dbaa1a
--- /dev/null
+++ b/src/c/host-configs/lassen-4.14.0-ppc64le-ibm-clang@16.0.6-cuda@11.8.0-gcc@8.3.1
@@ -0,0 +1,14 @@
+##############################################################
+# Copyright 2021 Lawrence Livermore National Security, LLC
+# (c.f. AUTHORS, NOTICE.LLNS, COPYING)
+#
+# This file is part of the Flux resource manager framework.
+# For details, see https://github.com/flux-framework.
+#
+# SPDX-License-Identifier: LGPL-3.0
+##############################################################
+
+set(CMAKE_C_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.8.0-gcc-11.2.1/bin/clang" CACHE PATH "")
+set(CMAKE_CXX_COMPILER "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.8.0-gcc-11.2.1/bin/clang++" CACHE PATH "")
+set(LLVM_DIR "/usr/tce/packages/clang/clang-ibm-16.0.6-cuda-11.8.0-gcc-11.2.1/lib/cmake/llvm" CACHE PATH "")
+set(FLEX_EXECUTABLE "/usr/tcetmp/packages/flex/flex-2.6.4/bin/flex" CACHE PATH "")