MacOS fixes

CMakeLists.txt

@@ -21,7 +21,8 @@ if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
                                                "MinSizeRel" "RelWithDebInfo")
 endif()
 
-add_compile_options(-fdata-sections -ffunction-sections)
+add_compile_options(-fdata-sections -ffunction-sections
+                    -Wno-return-stack-address)
 if(APPLE)
   add_link_options(-Wl,-dead_strip)
 else()
@@ -54,19 +55,13 @@ target_link_options(${PROJECT_NAME} PRIVATE $<$<NOT:$<CONFIG:Debug>>:
 add_library(${PROJECT_NAME}_static STATIC ConflictSet.cpp)
 target_compile_options(conflict_set_static PRIVATE -fno-exceptions
                                                    -fvisibility=hidden)
-add_custom_command(
-  TARGET conflict_set_static
-  POST_BUILD
-  COMMAND
-    ${CMAKE_OBJCOPY} --keep-global-symbols=${CMAKE_SOURCE_DIR}/symbols.txt
-    $<TARGET_FILE:${PROJECT_NAME}_static>)
-
-if(APPLE)
-  target_link_options(
-    ${PROJECT_NAME}
-    PRIVATE
-    "LINKER:-no_weak_exports,-exported_symbols_list,${CMAKE_SOURCE_DIR}/symbols.txt"
-  )
+if(NOT APPLE AND CMAKE_OBJCOPY)
+  add_custom_command(
+    TARGET conflict_set_static
+    POST_BUILD
+    COMMAND
+      ${CMAKE_OBJCOPY} --keep-global-symbols=${CMAKE_SOURCE_DIR}/symbols.txt
+      $<TARGET_FILE:${PROJECT_NAME}_static>)
 endif()
 
 set(TEST_FLAGS -Wall -Wextra -Wpedantic -Wunreachable-code -UNDEBUG)
@@ -82,8 +77,8 @@ target_compile_definitions(conflict_set_main PRIVATE ENABLE_MAIN)
 set(FUZZ_FLAGS "-fsanitize=fuzzer-no-link,address,undefined")
 include(CheckCXXCompilerFlag)
 cmake_push_check_state()
-set(CMAKE_REQUIRED_LINK_OPTIONS ${FUZZ_FLAGS})
-check_cxx_compiler_flag(${FUZZ_FLAGS} HAS_LIB_FUZZER)
+set(CMAKE_REQUIRED_LINK_OPTIONS -fsanitize=fuzzer)
+check_cxx_compiler_flag(-fsanitize=fuzzer HAS_LIB_FUZZER)
 cmake_pop_check_state()
 
 if(HAS_LIB_FUZZER)