From 651962702a6e01c067cf6ae7c2d87664750393a0 Mon Sep 17 00:00:00 2001
From: theraven <theraven@72102866-910b-0410-8b05-ffd578937521>
Date: Sat, 22 Dec 2012 11:04:20 +0000
Subject: [PATCH] Add uninstall target to CMake.

---
 CMakeLists.txt           | 15 ++++++++++++---
 cmake_uninstall.cmake.in | 22 ++++++++++++++++++++++
 2 files changed, 34 insertions(+), 3 deletions(-)
 create mode 100644 cmake_uninstall.cmake.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5f60577..388987d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -97,7 +97,7 @@ if (BOEHM_GC)
 	else ()
 		find_library(LIBGC gc PATHS GC_LIBRARY_DIRS)
 	endif ()
-	message("-- Using Boehm GC library: ${LIBGC}")
+	message(STATUS "Using Boehm GC library: ${LIBGC}")
 	include_directories(GC_INCLUDE_DIRS)
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${GC_CFLAGS}")
 	set(CMAKE_OBJC_FLAGS "${CMAKE_OBJC_FLAGS} -fobjc-gc")
@@ -158,13 +158,13 @@ endif (NOT CXX_RUNTIME)
 # for Objective-C and Objective-C++.  If not, then we need to provide a
 # separate libobjcxx.
 if (CXX_RUNTIME)
-	message("-- Using ${CXX_RUNTIME} as the C++ runtime library")
+	message(STATUS "Using ${CXX_RUNTIME} as the C++ runtime library")
 	set(libobjc_CXX_SRCS ${libobjcxx_CXX_SRCS})
 	# We don't want to link the STL implementation (e.g. libstdc++) if we have
 	# a separate C++ runtime.
 	set(CMAKE_CXX_IMPLICIT_LINK_LIBRARIES "")
 else (CXX_RUNTIME)
-	message("-- No C++ runtime library found")
+	message(STATUS "No C++ runtime library found")
 	add_library(objcxx SHARED ${libobjcxx_CXX_SRCS})
 	set_target_properties(objcxx PROPERTIES
 		LINKER_LANGUAGE C
@@ -262,3 +262,12 @@ if (UNIX)
 endif ()
 include (CPack)
 
+# uninstall target
+configure_file(
+	"${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
+	"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
+	IMMEDIATE @ONLY)
+
+add_custom_target(uninstall
+	COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
+
diff --git a/cmake_uninstall.cmake.in b/cmake_uninstall.cmake.in
new file mode 100644
index 0000000..c6d8094
--- /dev/null
+++ b/cmake_uninstall.cmake.in
@@ -0,0 +1,22 @@
+if (NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+    message(FATAL_ERROR "Cannot find install manifest: \"@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt\"")
+endif(NOT EXISTS "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt")
+
+file(READ "@CMAKE_CURRENT_BINARY_DIR@/install_manifest.txt" files)
+string(REGEX REPLACE "\n" ";" files "${files}")
+list(REVERSE files)
+foreach (file ${files})
+    message(STATUS "Uninstalling \"$ENV{DESTDIR}${file}\"")
+    if (EXISTS "$ENV{DESTDIR}${file}")
+        execute_process(
+            COMMAND @CMAKE_COMMAND@ -E remove "$ENV{DESTDIR}${file}"
+            OUTPUT_VARIABLE rm_out
+            RESULT_VARIABLE rm_retval
+        )
+        if(NOT ${rm_retval} EQUAL 0)
+            message(FATAL_ERROR "Problem when removing \"$ENV{DESTDIR}${file}\"")
+        endif (NOT ${rm_retval} EQUAL 0)
+    else (EXISTS "$ENV{DESTDIR}${file}")
+        message(STATUS "File \"$ENV{DESTDIR}${file}\" does not exist.")
+    endif (EXISTS "$ENV{DESTDIR}${file}")
+endforeach(file)