From fc733629e2aa5559f5922cbd3d2c08a61a2f1a02 Mon Sep 17 00:00:00 2001
From: Matthew Thompson <matthew.thompson@nasa.gov>
Date: Thu, 20 Jun 2024 14:41:49 -0400
Subject: [PATCH] Add esma_add_fortran_submodules (v3)

---
 CHANGELOG.md                                  |  6 +++++
 .../esma_add_fortran_submodules.cmake         | 27 +++++++++++++++++++
 esma_support/esma_support.cmake               |  1 +
 3 files changed, 34 insertions(+)
 create mode 100644 esma_support/esma_add_fortran_submodules.cmake

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a683b2a..403ca91 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Deprecated
 
+## [3.46.0] - 2024-06-21
+
+### Added
+
+- Add the file `esma_add_fortran_submodules.cmake` in the `esma_support` folder. The file contains a function that prevents conflicts when several submodule files have the same name.
+
 ## [3.45.3] - 2024-06-14
 
 ### Fixed
diff --git a/esma_support/esma_add_fortran_submodules.cmake b/esma_support/esma_add_fortran_submodules.cmake
new file mode 100644
index 0000000..7da31b1
--- /dev/null
+++ b/esma_support/esma_add_fortran_submodules.cmake
@@ -0,0 +1,27 @@
+# Function to avoid conflicts with files (in separate folders) with the same name.
+# The function is necessary for submodule files.
+
+function(esma_add_fortran_submodules)
+  set(options)
+  set(oneValueArgs TARGET SUBDIRECTORY)
+  set(multiValueArgs SOURCES)
+  cmake_parse_arguments(
+    ARG "${options}" "${oneValueArgs}"
+    "${multiValueArgs}" ${ARGN}
+  )
+
+  foreach(file ${ARG_SOURCES})
+
+    set(input ${CMAKE_CURRENT_SOURCE_DIR}/${ARG_SUBDIRECTORY}/${file})
+    set(output ${CMAKE_CURRENT_BINARY_DIR}/${ARG_SUBDIRECTORY}_${file})
+    add_custom_command(
+      OUTPUT ${output}
+      COMMAND ${CMAKE_COMMAND} -E copy ${input} ${output}
+      DEPENDS ${input}
+    )
+    set_property(SOURCE ${output} PROPERTY GENERATED 1)
+    target_sources(${ARG_TARGET} PRIVATE ${output})
+
+  endforeach()
+
+endfunction()
diff --git a/esma_support/esma_support.cmake b/esma_support/esma_support.cmake
index 7e2e6fc..c874a55 100644
--- a/esma_support/esma_support.cmake
+++ b/esma_support/esma_support.cmake
@@ -8,6 +8,7 @@ include (esma_add_library)
 include (esma_generate_automatic_code)
 include (esma_create_stub_component)
 include (esma_fortran_generator_list)
+include (esma_add_fortran_submodules)
 
 # Testing
 include (esma_enable_tests)