From 7306f549bf913c301fb141796b24c5bb7b0ed53a Mon Sep 17 00:00:00 2001
From: Mizux <dev@mizux.net>
Date: Tue, 22 May 2018 21:52:07 +0200
Subject: CMake OSX rpath  management (#4620)

* CMake: Add comment for CMP0048

* CMake: osx use @rpath/ as target's install name (CMP0042)

On MacoS library should use @rpath/ as prefix path instead of absolute build path
e.g. otool -L libprotobuf.dylib
libprotobuf.dylib:
  @rpath/libprotobuf.dylib (...)
  ...

* CMake: add rpath to target for LINUX and APPLE
---
 cmake/CMakeLists.txt |  6 +++++-
 cmake/install.cmake  | 14 ++++++++++++++
 2 files changed, 19 insertions(+), 1 deletion(-)

(limited to 'cmake')

diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index ada9dc25..ece39f7f 100644
--- a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -7,7 +7,11 @@ endif()
 
 # CMake policies
 cmake_policy(SET CMP0022 NEW)
-
+# On MacOS use @rpath/ for target's install name prefix path
+if (POLICY CMP0042)
+  cmake_policy(SET CMP0042 NEW)
+endif ()
+# Clear VERSION variables when no VERSION is given to project()
 if(POLICY CMP0048)
   cmake_policy(SET CMP0048 NEW)
 endif()
diff --git a/cmake/install.cmake b/cmake/install.cmake
index 82036cb6..9b2ae93c 100644
--- a/cmake/install.cmake
+++ b/cmake/install.cmake
@@ -15,6 +15,13 @@ foreach(_library ${_protobuf_libraries})
     PROPERTY INTERFACE_INCLUDE_DIRECTORIES
     $<BUILD_INTERFACE:${protobuf_source_dir}/src>
     $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
+  if (UNIX AND NOT APPLE)
+    set_property(TARGET ${_library}
+      PROPERTY INSTALL_RPATH "$ORIGIN")
+  elseif (APPLE)
+    set_property(TARGET ${_library}
+      PROPERTY INSTALL_RPATH "@loader_path")
+  endif()
   install(TARGETS ${_library} EXPORT protobuf-targets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT ${_library}
     LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT ${_library}
@@ -24,6 +31,13 @@ endforeach()
 if (protobuf_BUILD_PROTOC_BINARIES)
   install(TARGETS protoc EXPORT protobuf-targets
     RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR} COMPONENT protoc)
+  if (UNIX AND NOT APPLE)
+    set_property(TARGET protoc
+      PROPERTY INSTALL_RPATH "$ORIGIN/../lib")
+  elseif (APPLE)
+    set_property(TARGET protoc
+      PROPERTY INSTALL_RPATH "@loader_path/../lib")
+  endif()
 endif (protobuf_BUILD_PROTOC_BINARIES)
 
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/protobuf.pc ${CMAKE_CURRENT_BINARY_DIR}/protobuf-lite.pc DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
-- 
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