diff --git a/N/nlcglib/build_tarballs.jl b/N/nlcglib/build_tarballs.jl
new file mode 100644
index 00000000000..38160ce1019
--- /dev/null
+++ b/N/nlcglib/build_tarballs.jl
@@ -0,0 +1,96 @@
+# Note that this script can accept some limited command-line arguments, run
+# `julia build_tarballs.jl --help` to see a usage message.
+using BinaryBuilder, Pkg
+using Base.BinaryPlatforms
+const YGGDRASIL_DIR = "../.."
+include(joinpath(YGGDRASIL_DIR, "platforms", "mpi.jl"))
+
+name = "nlcglib"
+version = v"1.0.2" #technically v1.0b, but format not allowed
+
+sources = [
+   GitSource("https://github.com/simonpintarelli/nlcglib/", "de851f03b403f33cbe0bae8aac013194f8de3ff4")
+]
+
+script = raw"""
+cd $WORKSPACE/srcdir
+
+mkdir build
+cd build
+
+CMAKE_ARGS="-DUSE_OPENMP=ON \
+            -DCMAKE_TOOLCHAIN_FILE=${CMAKE_TARGET_TOOLCHAIN} \
+            -DCMAKE_FIND_ROOT_PATH='${prefix}/lib/mpich;${prefix}' \
+            -DCMAKE_INSTALL_PREFIX=$prefix \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DMPI_C_COMPILER=$bindir/mpicc \
+            -DMPI_CXX_COMPILER=$bindir/mpicxx"
+
+if [[ "${target}" == *-apple-mpich ]]; then
+  CMAKE_ARGS="${CMAKE_ARGS} \
+               -DMPI_C_LIB_NAMES='mpi;pmpi;hwloc' \
+               -DMPI_CXX_LIB_NAMES='mpicxx;mpi;pmpi;hwloc' \
+               -DMPI_mpicxx_LIBRARY=${libdir}/libmpicxx.dylib \
+               -DMPI_mpi_LIBRARY=${libdir}/libmpi.dylib \
+               -DMPI_pmpi_LIBRARY=${libdir}/libpmpi.dylib \
+               -DMPI_hwloc_LIBRARY=${libdir}/libhwloc.dylib"
+fi
+
+if [[ "${target}" == *-apple-mpitrampoline ]]; then
+  CMAKE_ARGS="${CMAKE_ARGS} \
+               -DMPI_C_LIB_NAMES='mpi;pmpi;hwloc' \
+               -DMPI_CXX_LIB_NAMES='mpicxx;mpi;pmpi;hwloc' \
+               -DMPI_mpicxx_LIBRARY=${libdir}/mpich/lib.libmpicxx.a \
+               -DMPI_mpi_LIBRARY=${libdir}/mpich/lib/libmpi.a \
+               -DMPI_pmpi_LIBRARY=${libdir}/mpich/lib/libpmpi.a \
+               -DMPI_hwloc_LIBRARY=${libdir}/libhwloc.dylib"
+fi
+
+cmake .. ${CMAKE_ARGS}
+
+make -j${nproc} install
+
+"""
+
+augment_platform_block = """
+    using Base.BinaryPlatforms
+    $(MPI.augment)
+    augment_platform!(platform::Platform) = augment_mpi!(platform)
+"""
+
+platforms = supported_platforms()                                                       
+filter!(!Sys.iswindows, platforms)
+filter!(!Sys.isfreebsd, platforms)
+platforms = expand_cxxstring_abis(platforms)
+#Apply same restriction as Kokkos
+filter!(p -> nbits(p) != 32, platforms)
+
+products = [
+   LibraryProduct("libnlcglib", :libnlcglib)
+]
+
+# Dependencies that must be installed before this package can be built
+dependencies = [
+    Dependency("OpenBLAS32_jll"),
+    Dependency("Kokkos_jll"),
+    BuildDependency("nlohmann_json_jll"),
+    Dependency("CompilerSupportLibraries_jll", platforms=filter(!Sys.isapple, platforms)),
+    Dependency("LLVMOpenMP_jll", platforms=filter(Sys.isapple, platforms))
+]
+
+platforms, platform_dependencies = MPI.augment_platforms(platforms; MPItrampoline_compat="5.2.1", 
+                                                         OpenMPI_compat="4.1.6, 5")
+
+# Avoid platforms where the MPI implementation isn't supported
+# OpenMPI
+platforms = filter(p -> !(p["mpi"] == "openmpi" && arch(p) == "armv6l" && libc(p) == "glibc"), platforms)
+
+# MPItrampoline
+platforms = filter(p -> !(p["mpi"] == "mpitrampoline" && libc(p) == "musl"), platforms)
+platforms = filter(p -> !(p["mpi"] == "mpitrampoline" && Sys.isfreebsd(p)), platforms)
+
+append!(dependencies, platform_dependencies)
+
+# Build the tarballs, and possibly a `build.jl` as well.
+build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies;
+               augment_platform_block, julia_compat="1.6", preferred_gcc_version = v"9")