From 01d4c8ca84ca00d05736b050bfe2bd76a8b71c1c Mon Sep 17 00:00:00 2001
From: Chaitanya Kukde <ckukde@gmail.com>
Date: Mon, 17 May 2021 00:54:00 +0100
Subject: [PATCH] Fixes #1068 : Add cmake uninstall target

---
 CMakeLists.txt                | 11 +++++++++++
 cmake/UninstallConky.cmake.in | 21 +++++++++++++++++++++
 2 files changed, 32 insertions(+)
 create mode 100644 cmake/UninstallConky.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 84fdef48..b4b1020b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -104,3 +104,14 @@ if(CHECK_CODE_QUALITY)
   find_package(ClangTidy)
   find_package(ClangFormat)
 endif(CHECK_CODE_QUALITY)
+
+# uninstall target
+if(NOT TARGET uninstall)
+  configure_file(
+      "${CMAKE_MODULE_PATH}/UninstallConky.cmake.in"
+    "${CMAKE_BINARY_DIR}/cmake_uninstall.cmake"
+    IMMEDIATE @ONLY)
+
+  add_custom_target(uninstall
+    COMMAND ${CMAKE_COMMAND} -P ${CMAKE_BINARY_DIR}/cmake_uninstall.cmake)
+endif()
diff --git a/cmake/UninstallConky.cmake.in b/cmake/UninstallConky.cmake.in
new file mode 100644
index 00000000..1a203ec9
--- /dev/null
+++ b/cmake/UninstallConky.cmake.in
@@ -0,0 +1,21 @@
+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}")
+    exec_program(
+      ${CMAKE_COMMAND} ARGS "-E remove \"$ENV{DESTDIR}${file}\""
+      OUTPUT_VARIABLE rm_out
+      RETURN_VALUE rm_retval
+      )
+    if(NOT "${rm_retval}" STREQUAL 0)
+      message(FATAL_ERROR "Problem when removing $ENV{DESTDIR}${file}")
+    endif()
+  else(IS_SYMLINK "$ENV{DESTDIR}${file}" OR EXISTS "$ENV{DESTDIR}${file}")
+    message(STATUS "File $ENV{DESTDIR}${file} does not exist.")
+  endif()
+endforeach()