Move macOS version flag to non-native build section

Now the flag is only set for targets being built for the Darling environment, not those being built to run natively.

Fixes #1064

CMakeLists.txt

@@ -86,11 +86,6 @@ set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} ${ASM_IGNORED_WARNINGS}")
 SET(CMAKE_C_FLAGS_DEBUG "-O0 -ggdb")
 SET(CMAKE_CXX_FLAGS_DEBUG "-O0 -ggdb")
 
-# set macOS deployment version
-SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
-SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
-set(CMAKE_OBJC_FLAGS "${CMAKE_OBJC_FLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
-
 # prevent object filename conflicts for two source files that differ only in extension (e.g. `object.c` and `object.m`)
 set(CMAKE_C_OUTPUT_EXTENSION ".c.o")
 set(CMAKE_CXX_OUTPUT_EXTENSION ".cpp.o")

src/CMakeLists.txt

@@ -74,6 +74,11 @@ set(CMAKE_AR "${CMAKE_BINARY_DIR}/src/external/cctools-port/cctools/ar/${APPLE_T
 set(CMAKE_RANLIB "${CMAKE_BINARY_DIR}/src/external/cctools-port/cctools/ar/${APPLE_TARGET_TRIPLET_PRIMARY}-ranlib")
 #set(CMAKE_ASM_COMPILER "${CMAKE_BINARY_DIR}/src/external/cctools-port/cctools/as/${APPLE_TARGET_TRIPLET_PRIMARY}-as")
 
+# set macOS deployment version
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
+SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
+set(CMAKE_OBJC_FLAGS "${CMAKE_OBJC_FLAGS} -mmacosx-version-min=${CMAKE_OSX_DEPLOYMENT_TARGET}")
+
 add_definitions(-target ${APPLE_TARGET_TRIPLET_PRIMARY})
 include(darling_lib)
 include(darling_static_lib)