depends: add -platform_version to macOS build flags

```bash
-platform_version platform min_version sdk_version
    This is set to indicate the platform, oldest supported version
    of that platform that output is to be used on, and the SDK that
    the output was built against.
```

Author: fanquake

depends/hosts/darwin.mk

@@ -71,6 +71,10 @@ $(foreach TOOL,$(cctools_TOOLS),$(eval darwin_$(TOOL) = $$(build_prefix)/bin/$$(
 #
 #         Adds the desired paths from the SDK
 #
+#     -platform_version
+#
+#         Indicate to the linker the platform, the oldest supported version,
+#         and the SDK used.
 
 darwin_CC=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \
               -u OBJC_INCLUDE_PATH -u OBJCPLUS_INCLUDE_PATH -u CPATH \
@@ -91,6 +95,7 @@ darwin_CXX=env -u C_INCLUDE_PATH -u CPLUS_INCLUDE_PATH \
 
 darwin_CFLAGS=-pipe -std=$(C_STANDARD)
 darwin_CXXFLAGS=-pipe -std=$(CXX_STANDARD)
+darwin_LDFLAGS=-Wl,-platform_version,macos,$(OSX_MIN_VERSION),$(OSX_SDK_VERSION)
 
 ifneq ($(LTO),)
 darwin_CFLAGS += -flto