From 6a2a8e06d71556beafe0bdaefba75c38970d7505 Mon Sep 17 00:00:00 2001
From: Dan Liew <daniel.liew@imperial.ac.uk>
Date: Sat, 26 Mar 2016 17:08:24 +0000
Subject: [PATCH] [CMake] Declare uninstall rule before the components so that
 they can add dependencies to the rule for their own custom uninstall logic.

---
 CMakeLists.txt | 35 +++++++++++++++++++----------------
 1 file changed, 19 insertions(+), 16 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index df6d528b0..a3ba4968e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -327,6 +327,25 @@ message(STATUS "CMAKE_INSTALL_LIBDIR: \"${CMAKE_INSTALL_LIBDIR}\"")
 message(STATUS "CMAKE_INSTALL_BINDIR: \"${CMAKE_INSTALL_BINDIR}\"")
 message(STATUS "CMAKE_INSTALL_INCLUDEDIR: \"${CMAKE_INSTALL_INCLUDEDIR}\"")
 
+################################################################################
+# Uninstall rule
+################################################################################
+configure_file(
+  "${CMAKE_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
+  @ONLY
+)
+
+# Target needs to be declared before the components so that they can add
+# dependencies to this target so they can run their own custom uninstall rules.
+add_custom_target(uninstall
+  COMMAND
+  "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
+  COMMENT "Uninstalling..."
+  ${ADD_CUSTOM_COMMAND_USES_TERMINAL_ARG}
+  VERBATIM
+)
+
 ################################################################################
 # CMake build file locations
 ################################################################################
@@ -362,19 +381,3 @@ if (ENABLE_EXAMPLE_TARGETS)
   add_subdirectory(examples)
 endif()
 
-################################################################################
-# Uninstall rule
-################################################################################
-configure_file(
-  "${CMAKE_SOURCE_DIR}/cmake/cmake_uninstall.cmake.in"
-  "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
-  @ONLY
-)
-
-add_custom_target(uninstall
-  COMMAND
-  "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
-  COMMENT "Uninstalling..."
-  ${ADD_CUSTOM_COMMAND_USES_TERMINAL_ARG}
-  VERBATIM
-)