diff --git a/.github/workflows/checkCI.yml b/.github/workflows/checkCI.yml
index 66998281c4..7a79993628 100644
--- a/.github/workflows/checkCI.yml
+++ b/.github/workflows/checkCI.yml
@@ -86,7 +86,7 @@ jobs:
             cmake -S "$SRCDIR" -B build -DMODELICA_UTILITIES_INCLUDE_DIR="$TESTDIR" -DMODELICA_DEBUG_TIME_EVENTS=ON -DCMAKE_BUILD_TYPE=${{ matrix.configuration }} -DCMAKE_C_FLAGS="-std=c89 -Wall -Wextra"
           fi
         env:
-          SRCDIR: ${{ github.workspace }}/Modelica/Resources/BuildProjects/CMake
+          SRCDIR: ${{ github.workspace }}/Modelica/Resources
           TESTDIR: ${{ github.workspace }}/.CI/Test
       - name: Build with ${{ matrix.compiler }}
         run: |
@@ -124,7 +124,7 @@ jobs:
         shell: C:\cygwin\bin\bash.exe -eo pipefail -o igncr '{0}'
         env:
           CYGWIN_NOWINPATH: 1
-          SRCDIR: ${{ github.workspace }}/Modelica/Resources/BuildProjects/CMake
+          SRCDIR: ${{ github.workspace }}/Modelica/Resources
           TESTDIR: ${{ github.workspace }}/.CI/Test
       - name: Build with gcc
         run: |
diff --git a/Modelica/Resources/BuildProjects/CMake/src.cmake b/Modelica/Resources/BuildProjects/CMake/src.cmake
index ccc5e400e0..aa4d55544b 100644
--- a/Modelica/Resources/BuildProjects/CMake/src.cmake
+++ b/Modelica/Resources/BuildProjects/CMake/src.cmake
@@ -41,8 +41,10 @@ elseif(MSVC)
   add_definitions(-D_CRT_SECURE_NO_WARNINGS /W3)
 endif()
 
+set(MODELICA_SOURCE_DIR "${MODELICA_RESOURCES_DIR}/C-Sources")
+
 if(MODELICA_BUILD_ZLIB)
-  set(ZLIB_INCLUDE_DIR "${MODELICA_RESOURCES_DIR}/C-Sources/zlib")
+  set(ZLIB_INCLUDE_DIR "${MODELICA_SOURCE_DIR}/zlib")
   file(TO_CMAKE_PATH ${ZLIB_INCLUDE_DIR} ZLIB_INCLUDE_DIR)
   include_directories(${ZLIB_INCLUDE_DIR})
 elseif(DEFINED ZLIB_INCLUDE_DIR)
@@ -63,57 +65,57 @@ else()
 endif()
 
 set(EXTC_SOURCES
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaFFT.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaFFT.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaInternal.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaInternal.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaRandom.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaRandom.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaStrings.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaStrings.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/gconstructor.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/stdint_msvc.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/stdint_wrap.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/uthash.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/win32_dirent.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/win32_dirent.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaFFT.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaFFT.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaInternal.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaInternal.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaRandom.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaRandom.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaStrings.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaStrings.h"
+  "${MODELICA_SOURCE_DIR}/gconstructor.h"
+  "${MODELICA_SOURCE_DIR}/stdint_msvc.h"
+  "${MODELICA_SOURCE_DIR}/stdint_wrap.h"
+  "${MODELICA_SOURCE_DIR}/uthash.h"
+  "${MODELICA_SOURCE_DIR}/win32_dirent.c"
+  "${MODELICA_SOURCE_DIR}/win32_dirent.h"
   "${MODELICA_UTILITIES_INCLUDE_DIR}/ModelicaUtilities.h"
 )
 
 set(TABLES_SOURCES
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaStandardTables.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaStandardTables.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaStandardTablesUsertab.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaMatIO.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/gconstructor.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/stdint_msvc.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/stdint_wrap.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/uthash.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaStandardTables.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaStandardTables.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaStandardTablesUsertab.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaMatIO.h"
+  "${MODELICA_SOURCE_DIR}/gconstructor.h"
+  "${MODELICA_SOURCE_DIR}/stdint_msvc.h"
+  "${MODELICA_SOURCE_DIR}/stdint_wrap.h"
+  "${MODELICA_SOURCE_DIR}/uthash.h"
   "${MODELICA_UTILITIES_INCLUDE_DIR}/ModelicaUtilities.h"
 )
 
 set(MATIO_SOURCES
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaMatIO.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaMatIO.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/read_data_impl.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/safe-math.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/snprintf.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/stdint_msvc.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaMatIO.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaMatIO.h"
+  "${MODELICA_SOURCE_DIR}/read_data_impl.h"
+  "${MODELICA_SOURCE_DIR}/safe-math.h"
+  "${MODELICA_SOURCE_DIR}/snprintf.c"
+  "${MODELICA_SOURCE_DIR}/stdint_msvc.h"
   "${ZLIB_INCLUDE_DIR}/zlib.h"
   "${MODELICA_UTILITIES_INCLUDE_DIR}/ModelicaUtilities.h"
 )
 
 set(IO_SOURCES
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaIO.c"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaIO.h"
-  "${MODELICA_RESOURCES_DIR}/C-Sources/ModelicaMatIO.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaIO.c"
+  "${MODELICA_SOURCE_DIR}/ModelicaIO.h"
+  "${MODELICA_SOURCE_DIR}/ModelicaMatIO.h"
   "${MODELICA_UTILITIES_INCLUDE_DIR}/ModelicaUtilities.h"
 )
 
 if(MODELICA_BUILD_ZLIB)
   file(GLOB ZLIB_SOURCES
-    "${MODELICA_RESOURCES_DIR}/C-Sources/zlib/*.c"
-    "${MODELICA_RESOURCES_DIR}/C-Sources/zlib/*.h"
+    "${MODELICA_SOURCE_DIR}/zlib/*.c"
+    "${MODELICA_SOURCE_DIR}/zlib/*.h"
   )
 endif()
 
diff --git a/Modelica/Resources/BuildProjects/CMake/test.cmake b/Modelica/Resources/BuildProjects/CMake/test.cmake
index 3c767109e9..0e57ddb6c4 100644
--- a/Modelica/Resources/BuildProjects/CMake/test.cmake
+++ b/Modelica/Resources/BuildProjects/CMake/test.cmake
@@ -1,9 +1,9 @@
 include(CTest)
 
 if(BUILD_TESTING)
-  set(MODELICA_TEST_SOURCE_DIR "${PROJECT_SOURCE_DIR}/../../../../.CI/Test")
-  get_filename_component(ABSOLUTE_MODELICA_TEST_SOURCE_DIR "${MODELICA_TEST_SOURCE_DIR}" ABSOLUTE)
-  if(EXISTS "${ABSOLUTE_MODELICA_TEST_SOURCE_DIR}")
+  set(MODELICA_TEST_DIR_AUX "${MODELICA_RESOURCES_DIR}/../../.CI/Test")
+  get_filename_component(MODELICA_TEST_DIR "${MODELICA_TEST_DIR_AUX}" ABSOLUTE)
+  if(EXISTS "${MODELICA_TEST_DIR}")
     set(MODELICA_TESTS
       FileSystem
       ModelicaStrings
@@ -15,7 +15,7 @@ if(BUILD_TESTING)
       TablesNoUsertab
     )
     foreach(TEST ${MODELICA_TESTS})
-      add_executable(Test${TEST} "${ABSOLUTE_MODELICA_TEST_SOURCE_DIR}/${TEST}.c")
+      add_executable(Test${TEST} "${MODELICA_TEST_DIR}/${TEST}.c")
       target_link_libraries(Test${TEST}
         ModelicaExternalC
         ModelicaStandardTables
@@ -33,12 +33,12 @@ if(BUILD_TESTING)
       add_test(
         NAME Test${TEST}
         COMMAND Test${TEST}
-        WORKING_DIRECTORY "${ABSOLUTE_MODELICA_TEST_SOURCE_DIR}"
+        WORKING_DIRECTORY "${MODELICA_TEST_DIR}"
       )
     endforeach()
   else()
     message(WARNING
-      " Testsuite not found in \"${ABSOLUTE_MODELICA_TEST_SOURCE_DIR}\"."
+      " Testsuite not found in \"${MODELICA_TEST_DIR}\"."
       " Set BUILD_TESTING to OFF to silence this warning."
     )
   endif()
diff --git a/Modelica/Resources/BuildProjects/CMake/CMakeLists.txt b/Modelica/Resources/CMakeLists.txt
similarity index 73%
rename from Modelica/Resources/BuildProjects/CMake/CMakeLists.txt
rename to Modelica/Resources/CMakeLists.txt
index bb27850d64..ef02239a1b 100644
--- a/Modelica/Resources/BuildProjects/CMake/CMakeLists.txt
+++ b/Modelica/Resources/CMakeLists.txt
@@ -9,8 +9,8 @@ endif()
 
 project(Modelica_Standard_Library_Tables C)
 
-include(Modelica_platform.cmake)
-include(Modelica_utilities.cmake)
+include(BuildProjects/CMake/Modelica_platform.cmake)
+include(BuildProjects/CMake/Modelica_utilities.cmake)
 
 set(MODELICA_RESOURCES_DIR "${PROJECT_SOURCE_DIR}/../..")
 get_filename_component(ABSOLUTE_MODELICA_RESOURCES_DIR "${MODELICA_RESOURCES_DIR}" ABSOLUTE)
@@ -27,7 +27,7 @@ set(
   "Library installation path (don't change)" FORCE
 )
 
-include(compiler_options.cmake)
-include(options.cmake)
-include(test.cmake)
-include(src.cmake)
+include(BuildProjects/CMake/compiler_options.cmake)
+include(BuildProjects/CMake/options.cmake)
+include(BuildProjects/CMake/test.cmake)
+include(BuildProjects/CMake/src.cmake)