diff --git a/libs/libm/libmcs/CMakeLists.txt b/libs/libm/libmcs/CMakeLists.txt
new file mode 100644
index 0000000000..b983ffa837
--- /dev/null
+++ b/libs/libm/libmcs/CMakeLists.txt
@@ -0,0 +1,116 @@
+# ##############################################################################
+# libs/libm/libmcs/CMakeLists.txt
+#
+# Licensed to the Apache Software Foundation (ASF) under one or more contributor
+# license agreements.  See the NOTICE file distributed with this work for
+# additional information regarding copyright ownership.  The ASF licenses this
+# file to you under the Apache License, Version 2.0 (the "License"); you may not
+# use this file except in compliance with the License.  You may obtain a copy of
+# the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# License for the specific language governing permissions and limitations under
+# the License.
+#
+# ##############################################################################
+
+if(CONFIG_LIBM_LIBMCS)
+
+  # ############################################################################
+  # Config and Fetch libmcs
+  # ############################################################################
+
+  set(LIBMCS_VERSION 1.2.0)
+
+  set(LIBMCS_URL
+      https://gitlab.com/gtd-gmbh/libmcs/-/archive/${LIBMCS_VERSION}/${LIBMCS_VERSION}.zip
+  )
+
+  set(LIBMCS_DIR ${CMAKE_CURRENT_LIST_DIR}/libmcs)
+
+  if(NOT EXISTS ${CMAKE_CURRENT_LIST_DIR}/libmcs)
+    FetchContent_Declare(
+      libmcs_fetch
+      URL ${LIBMCS_URL} SOURCE_DIR ${LIBMCS_URL}/libmcs BINARY_DIR
+          ${CMAKE_BINARY_DIR}/libs/libm/libmcs/libmcs
+      PATCH_COMMAND
+        patch -p2 -d ${CMAKE_CURRENT_LIST_DIR} <
+        ${CMAKE_CURRENT_LIST_DIR}/0001-fix-build-error-remove-unused-file-fenv.h.patch
+        && patch -p2 -d ${CMAKE_CURRENT_LIST_DIR} <
+        ${CMAKE_CURRENT_LIST_DIR}/0002-fix-build-error-do-not-include-config.h.patch
+        && patch -p2 -d ${CMAKE_CURRENT_LIST_DIR} <
+        ${CMAKE_CURRENT_LIST_DIR}/0003-fix-build-error-INFINITY-error-in-quickjs.c.patch
+        && patch -p2 -d ${CMAKE_CURRENT_LIST_DIR} <
+        ${CMAKE_CURRENT_LIST_DIR}/0004-Fix-warning-function-declaration-isn-t-a-prototype-W.patch
+        && patch -p2 -d ${CMAKE_CURRENT_LIST_DIR} <
+        ${CMAKE_CURRENT_LIST_DIR}/0005-libm-libmcs-Fix-clang-build-libmcs-warning.patch
+    )
+
+    FetchContent_GetProperties(libmcs_fetch)
+
+    if(NOT libmcs_fetch_POPULATED)
+      FetchContent_Populate(libmcs_fetch)
+    endif()
+    set(LIBMCS_DIR ${libmcs_fetch_SOURCE_DIR})
+
+  endif()
+
+  # ############################################################################
+  # Flags
+  # ############################################################################
+
+  set(CFLAGS -DLIBMCS_LONG_IS_32BITS)
+
+  # ############################################################################
+  # Sources
+  # ############################################################################
+  file(GLOB_RECURSE CSRCS ${LIBMCS_DIR}/libm/common/*.c
+       ${LIBMCS_DIR}/libm/mathd/*.c ${LIBMCS_DIR}/libm/mathf/*.c)
+
+  set(RM_CSRCS
+      ${LIBMCS_DIR}/libm/common/isfinite.c
+      ${LIBMCS_DIR}/libm/common/cmplx.c
+      ${LIBMCS_DIR}/libm/common/isgreater.c
+      ${LIBMCS_DIR}/libm/common/isless.c
+      ${LIBMCS_DIR}/libm/common/isunordered.c
+      ${LIBMCS_DIR}/libm/common/isgreaterequal.c
+      ${LIBMCS_DIR}/libm/common/isnan.c
+      ${LIBMCS_DIR}/libm/common/isinf.c
+      ${LIBMCS_DIR}/libm/common/islessequal.c
+      ${LIBMCS_DIR}/libm/common/islessgreater.c
+      ${LIBMCS_DIR}/libm/common/isnormal.c)
+
+  list(REMOVE_ITEM CSRCS ${RM_CSRCS})
+
+  # ############################################################################
+  # Include Directory
+  # ############################################################################
+
+  set(INCDIR ${LIBMCS_DIR}/libm/common ${LIBMCS_DIR}/libm/mathd/internal
+             ${LIBMCS_DIR}/libm/mathf/internal)
+
+  if(CONFIG_LIBM_LIBMCS_WANT_COMPLEX)
+    list(APPEND CFLAGS -DLIBMCS_WANT_COMPLEX)
+    file(GLOB_RECURSE COMPLEX_CSRCS ${LIBMCS_DIR}/libm/complexd/*.c
+         ${LIBMCS_DIR}/libm/complexf/*.c)
+    list(APPEND CSRCS ${COMPLEX_CSRCS})
+  endif()
+
+  # ############################################################################
+  # Library Configuration
+  # ############################################################################
+
+  nuttx_add_kernel_library(m SPLIT)
+
+  target_sources(m PRIVATE ${CSRCS})
+  target_include_directories(m PRIVATE ${INCDIR})
+  target_compile_options(m PRIVATE ${CFLAGS})
+
+  nuttx_create_symlink(${LIBMCS_DIR}/libm/include
+                       ${CMAKE_BINARY_DIR}/include/libmcs)
+
+endif()