From 03edb7818ed8c7143664fa08d96f7d22227df557 Mon Sep 17 00:00:00 2001
From: "Jean M. Sexton" <jmsexton@lbl.gov>
Date: Mon, 10 Nov 2025 13:54:15 -0800
Subject: [PATCH] Add macro for uninstall target and update symlink install to
 be added to manifest

---
 Tools/CMake/AMReXInstallHelpers.cmake | 31 +++++++++++++++++++++++----
 Tools/CMake/AMReX_cmake_uninstall.in  | 25 +++++++++++++++++++++
 2 files changed, 52 insertions(+), 4 deletions(-)
 create mode 100644 Tools/CMake/AMReX_cmake_uninstall.in

diff --git a/Tools/CMake/AMReXInstallHelpers.cmake b/Tools/CMake/AMReXInstallHelpers.cmake
index 7c832d3a1cc..44f16e996b6 100644
--- a/Tools/CMake/AMReXInstallHelpers.cmake
+++ b/Tools/CMake/AMReXInstallHelpers.cmake
@@ -72,10 +72,14 @@ function (install_amrex_targets)
        # legacy symlink for: libamrex.[so|a] / amrex.[dll.lib]
        #   escape spaces for generated cmake_install.cmake file
        file(TO_CMAKE_PATH "${CMAKE_INSTALL_PREFIX}/lib" ABS_INSTALL_LIB_DIR)
-       install(CODE "file(CREATE_LINK
-           $<TARGET_FILE_NAME:amrex_${AMReX_SPACEDIM_LAST}d>
-           \"${ABS_INSTALL_LIB_DIR}/$<TARGET_FILE_PREFIX:amrex_${AMReX_SPACEDIM_LAST}d>amrex$<TARGET_FILE_SUFFIX:amrex_${AMReX_SPACEDIM_LAST}d>\"
-           COPY_ON_ERROR SYMBOLIC)"
+       install(CODE "
+           set(symlink_name \"${ABS_INSTALL_LIB_DIR}/$<TARGET_FILE_PREFIX:amrex_${AMReX_SPACEDIM_LAST}d>amrex$<TARGET_FILE_SUFFIX:amrex_${AMReX_SPACEDIM_LAST}d>\")
+           file(CREATE_LINK
+               $<TARGET_FILE_NAME:amrex_${AMReX_SPACEDIM_LAST}d>
+               \"\${symlink_name}\"
+               COPY_ON_ERROR SYMBOLIC)
+           list(APPEND CMAKE_INSTALL_MANIFEST_FILES \"\${symlink_name}\")
+           "
        )
 
        # Install fortran modules if Fortran is enabled
@@ -178,3 +182,22 @@ macro( add_test_install_target _dir _amrex_root )
       )
 
 endmacro()
+
+#
+# Add uninstall target
+#
+# _amrex_root: Root directory of AMReX (contains Tools/CMake/)
+#
+macro(add_uninstall_target _amrex_root)
+    if(NOT TARGET uninstall)
+        configure_file(
+            "${_amrex_root}/Tools/CMake/AMReX_cmake_uninstall.in"
+            "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
+            IMMEDIATE @ONLY)
+
+        add_custom_target(uninstall
+            COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake
+            COMMENT "Uninstalling files listed in install_manifest.txt"
+        )
+    endif()
+endmacro()
\ No newline at end of file
diff --git a/Tools/CMake/AMReX_cmake_uninstall.in b/Tools/CMake/AMReX_cmake_uninstall.in
new file mode 100644
index 00000000000..830a6c62303
--- /dev/null
+++ b/Tools/CMake/AMReX_cmake_uninstall.in
@@ -0,0 +1,25 @@
+if(NOT EXISTS "@CMAKE_BINARY_DIR@/install_manifest.txt")
+    message(FATAL_ERROR "Cannot find install manifest: @CMAKE_BINARY_DIR@/install_manifest.txt")
+endif()
+
+file(READ "@CMAKE_BINARY_DIR@/install_manifest.txt" files)
+string(REGEX REPLACE "\n" ";" files "${files}")
+
+foreach(file ${files})
+    message(STATUS "Uninstalling $ENV{DESTDIR}${file}")
+    if(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+        execute_process(
+            COMMAND "@CMAKE_COMMAND@" -E remove "$ENV{DESTDIR}${file}"
+            RESULT_VARIABLE rm_retval
+            OUTPUT_VARIABLE rm_out
+            ERROR_VARIABLE rm_err
+        )
+        if(NOT "${rm_retval}" STREQUAL "0")
+            message(FATAL_ERROR "Problem when removing $ENV{DESTDIR}${file}: ${rm_err}")
+        endif()
+    else()
+        message(STATUS "File $ENV{DESTDIR}${file} does not exist.")
+    endif()
+endforeach()
+
+message(STATUS "Uninstall complete")
\ No newline at end of file