From 419fc2afe3e0b89d50dc2f6a2759d59d14270ab7 Mon Sep 17 00:00:00 2001
From: Tobias Fischer <info@tobiasfischer.info>
Date: Thu, 22 Jul 2021 09:39:00 +1000
Subject: [PATCH] Do not link against PYTHON_LIBRARIES on macOS

Signed-off-by: Tobias-Fischer <t.fischer@imperial.ac.uk>
---
 .../rosidl_generator_py_generate_interfaces.cmake | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake b/rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake
index 4af35d68..433ce1ad 100644
--- a/rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake
+++ b/rosidl_generator_py/cmake/rosidl_generator_py_generate_interfaces.cmake
@@ -169,10 +169,17 @@ add_dependencies(
   ${rosidl_generate_interfaces_TARGET}__rosidl_typesupport_c
 )
 
-target_link_libraries(
-  ${_target_name_lib}
-  ${PythonExtra_LIBRARIES}
-)
+
+if(NOT APPLE)
+  target_link_libraries(
+    ${_target_name_lib}
+    ${PythonExtra_LIBRARIES}
+  )
+else()
+  set_target_properties(${_target_name_lib} PROPERTIES
+                        LINK_FLAGS "-undefined dynamic_lookup")
+endif()
+
 target_include_directories(${_target_name_lib}
   PUBLIC
   ${CMAKE_CURRENT_BINARY_DIR}/rosidl_generator_c