From b3d195f0188758a14875a5a2f270e4fd190a679f Mon Sep 17 00:00:00 2001
From: manuel <manuel@mausz.at>
Date: Tue, 17 Apr 2018 00:15:38 +0200
Subject: sync with upstream

---
 cmake/scripts/common/Uninstall.cmake | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

(limited to 'cmake/scripts/common/Uninstall.cmake')

diff --git a/cmake/scripts/common/Uninstall.cmake b/cmake/scripts/common/Uninstall.cmake
index 5660e19..5753857 100644
--- a/cmake/scripts/common/Uninstall.cmake
+++ b/cmake/scripts/common/Uninstall.cmake
@@ -1,9 +1,40 @@
+macro(remove_empty_dirs)
+  list(REMOVE_DUPLICATES DIRECTORIES)
+  unset(PDIRECTORIES)
+  foreach(dir IN LISTS DIRECTORIES)
+    if(EXISTS $ENV{DESTDIR}${dir})
+      file(GLOB _res $ENV{DESTDIR}${dir}/*)
+      list(LENGTH _res _len)
+      if(_len EQUAL 0 AND EXISTS $ENV{DESTDIR}${dir})
+        message(STATUS "Removing empty dir: ${dir}")
+        execute_process(
+          COMMAND ${CMAKE_COMMAND} -E remove_directory $ENV{DESTDIR}${dir}
+          OUTPUT_VARIABLE rm_out
+          RESULT_VARIABLE rm_retval
+        )
+        if(NOT "${rm_retval}" STREQUAL 0)
+          message(FATAL_ERROR "Failed to remove directory: $ENV{DESTDIR}${dir}")
+        endif()
+        get_filename_component(_pdir $ENV{DESTDIR}${dir} DIRECTORY)
+        list(APPEND PDIRECTORIES ${_pdir})
+      endif()
+    endif()
+  endforeach()
+  list(LENGTH PDIRECTORIES _plen)
+  if(_plen GREATER 0)
+    set(DIRECTORIES ${PDIRECTORIES})
+    remove_empty_dirs()
+  endif()
+endmacro()
+
 # Uninstall target
 set(MANIFEST ${CMAKE_CURRENT_BINARY_DIR}/install_manifest.txt)
 if(EXISTS ${MANIFEST})
   file(STRINGS ${MANIFEST} files)
     foreach(file IN LISTS files)
       if(EXISTS $ENV{DESTDIR}${file})
+        get_filename_component(_dir $ENV{DESTDIR}${file} DIRECTORY)
+        list(APPEND DIRECTORIES $ENV{DESTDIR}${_dir})
         message(STATUS "Uninstalling: ${file}")
         execute_process(
           COMMAND ${CMAKE_COMMAND} -E remove $ENV{DESTDIR}${file}
@@ -17,6 +48,11 @@ if(EXISTS ${MANIFEST})
         message(STATUS "File does not exist: $ENV{DESTDIR}${file}")
       endif()
     endforeach(file)
+
+    # delete empty dirs
+    if(DIRECTORIES)
+      remove_empty_dirs()
+    endif()
 else()
   message(STATUS "Cannot find install manifest: '${MANIFEST}'")
 endif()
-- 
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