Fix example flags on mac

Signed-off-by: Tim Paine <3105306+timkpaine@users.noreply.github.com>

Author: timkpaine

examples/05_cpp/1_cpp_node/CMakeLists.txt

@@ -18,6 +18,11 @@ find_library(CSP_LIBRARY NAMES _cspimpl.so PATHS "${CSP_LIB_DIR}" NO_DEFAULT_PAT
 # Position independent code for shared libraries
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
+# macOS: don't link against build python
+if(APPLE)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -undefined dynamic_lookup")
+endif()
+
 # Shared library naming conventions
 set(CMAKE_SHARED_LIBRARY_PREFIX _)
 set(CMAKE_SHARED_LIBRARY_SUFFIX .so)

examples/05_cpp/2_cpp_node_with_struct/CMakeLists.txt

@@ -18,6 +18,11 @@ find_library(CSP_LIBRARY NAMES _cspimpl.so PATHS "${CSP_LIB_DIR}" NO_DEFAULT_PAT
 # Position independent code for shared libraries
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
+# macOS: don't link against build python
+if(APPLE)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -undefined dynamic_lookup")
+endif()
+
 # Shared library naming conventions
 set(CMAKE_SHARED_LIBRARY_PREFIX _)
 set(CMAKE_SHARED_LIBRARY_SUFFIX .so)

examples/05_cpp/3_cpp_adapter/CMakeLists.txt

@@ -18,6 +18,11 @@ find_library(CSP_LIBRARY NAMES _cspimpl.so PATHS "${CSP_LIB_DIR}" NO_DEFAULT_PAT
 # Position independent code for shared libraries
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
+# macOS: don't link against build python
+if(APPLE)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -undefined dynamic_lookup")
+endif()
+
 # Shared library naming conventions
 set(CMAKE_SHARED_LIBRARY_PREFIX _)
 set(CMAKE_SHARED_LIBRARY_SUFFIX .so)

examples/05_cpp/4_c_api_adapter/CMakeLists.txt

@@ -18,6 +18,11 @@ find_library(CSP_LIBRARY NAMES _cspimpl.so PATHS "${CSP_LIB_DIR}" NO_DEFAULT_PAT
 # Position independent code for shared libraries
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
+# macOS: don't link against build python
+if(APPLE)
+    set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -undefined dynamic_lookup")
+endif()
+
 # Shared library naming conventions
 set(CMAKE_SHARED_LIBRARY_PREFIX _)
 set(CMAKE_SHARED_LIBRARY_SUFFIX .so)