diff --git a/CHANGELOG.md b/CHANGELOG.md
index c779a6e..e087770 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,12 +17,22 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Deprecated
 
-## [4.7.0] - 2024-11-05
+## [4.8.0] - 2024-11-05
 
 ### Added
 
 - Added new `esma_capture_mepo_status` function (in `esma_support/esma_mepo_status.cmake`) to capture the output of `mepo status --hashes` when `mepo` was used to clone the fixture. It will output this into a file `MEPO_STATUS.rc` which is installed to `${CMAKE_INSTALL_PREFIX}/etc` and can be used to help determine the exact state of the fixture at build time.
 
+## [4.7.0] - 2024-10-10
+
+### Changed
+
+- Support for building GEOSgcm with Spack using MAPL as library
+  - Update `esma_create_stub_component` to look for `mapl_stub.pl` in `$MAPL_BASE_DIR/etc` (which is a variable defined by ecbuild)
+  - Update `esma_generate_automatic_code` to look for `mapl_acg.pl` in `$MAPL_BASE_DIR/etc` (which is a variable defined by ecbuild)
+  - Require CMake 3.18 for features used in above updates
+- Update to CircleCI orb v5
+
 ## [4.6.0] - 2024-09-05
 
 ### Added
diff --git a/esma_support/esma_create_stub_component.cmake b/esma_support/esma_create_stub_component.cmake
index 2c56e68..ee0d733 100644
--- a/esma_support/esma_create_stub_component.cmake
+++ b/esma_support/esma_create_stub_component.cmake
@@ -1,9 +1,15 @@
+# find_file REQUIRED requires CMake 3.18
+cmake_minimum_required (VERSION 3.18)
+
 macro (esma_create_stub_component srcs module)
   list (APPEND ${srcs} ${module}.F90)
 
   find_file (stub_generator
     NAME mapl_stub.pl
-    PATHS ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL)
+    PATHS ${MAPL_BASE_DIR}/etc ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL
+    DOC "Path to MAPL stub generator"
+    REQUIRED
+  )
 
   add_custom_command (
     OUTPUT ${module}.F90
@@ -11,7 +17,7 @@ macro (esma_create_stub_component srcs module)
     MAIN_DEPENDENCY ${stub_generator}
     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
     COMMENT "Making component stub for ${module}Mod in ${module}.F90"
-    )
+  )
   add_custom_target(stub_${module} DEPENDS ${module}.F90)
 
 endmacro ()
diff --git a/esma_support/esma_generate_automatic_code.cmake b/esma_support/esma_generate_automatic_code.cmake
index 2513663..94b4828 100644
--- a/esma_support/esma_generate_automatic_code.cmake
+++ b/esma_support/esma_generate_automatic_code.cmake
@@ -1,5 +1,7 @@
 # Generate headers and  resource files for GOCART components
 
+cmake_minimum_required (VERSION 3.18)
+
 set (acg_flags -v)
 
 macro (new_esma_generate_automatic_code
@@ -7,7 +9,9 @@ macro (new_esma_generate_automatic_code
 
   find_file (generator
     NAME mapl_acg.pl
-    PATHS ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL)
+    PATHS ${MAPL_BASE_DIR}/etc ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL
+    DOC "Path to the perl MAPL ACG generator"
+  )
 
   add_custom_command (
     OUTPUT ${rcs}
@@ -59,7 +63,9 @@ macro (esma_generate_gmi_code target type)
 
   find_file (generator
     NAME mapl_acg.pl
-    PATHS ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL)
+    PATHS ${MAPL_BASE_DIR}/etc ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL
+    DOC "Path to the perl MAPL ACG generator"
+  )
 
   add_custom_command (
     #    TARGET ${this}
@@ -85,7 +91,10 @@ macro (esma_generate_automatic_code this name destination flags)
 
   find_file (generator
     NAME mapl_acg.pl
-    PATHS ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL)
+    PATHS ${MAPL_BASE_DIR}/etc ${MAPL_SOURCE_DIR}/Apps ${esma_etc}/MAPL
+    DOC "Path to the perl MAPL ACG generator"
+    REQUIRED
+  )
 
   add_custom_command (
     OUTPUT ${name}_ExportSpec___.h ${name}_GetPointer___.h ${name}_History___.rc