Fixed an issue with GCC linker when "native" dev-platform is used in …

…pair with library dependencies // Resolve #3669

HISTORY.rst

@@ -13,6 +13,7 @@ PlatformIO Core 5
 
 - Fixed a "PermissionError: [WinError 5]" on Windows when external repository is used with `lib_deps <https://docs.platformio.org/page/projectconf/section_env_library.html#lib-deps>`__ option (`issue #3664 <https://github.com/platformio/platformio-core/issues/3664>`_)
 - Fixed a "KeyError: 'versions'" when dependency does not exist in the registry (`issue #3666 <https://github.com/platformio/platformio-core/issues/3666>`_)
+- Fixed an issue with GCC linker when "native" dev-platform is used in pair with library dependencies (`issue #3669 <https://github.com/platformio/platformio-core/issues/3669>`_)
 
 5.0.1 (2020-09-10)
 ~~~~~~~~~~~~~~~~~~

platformio/builder/tools/platformio.py

@@ -27,7 +27,7 @@
 from SCons.Script import SConscript  # pylint: disable=import-error
 
 from platformio import __version__, fs
-from platformio.compat import string_types
+from platformio.compat import MACOS, string_types
 from platformio.package.version import pepver_to_semver
 
 SRC_HEADER_EXT = ["h", "hpp"]
@@ -69,7 +69,7 @@ def BuildProgram(env):
     if (
         env.get("LIBS")
         and env.GetCompilerType() == "gcc"
-        and env.PioPlatform().is_embedded()
+        and (env.PioPlatform().is_embedded() or not MACOS)
     ):
         env.Prepend(_LIBFLAGS="-Wl,--start-group ")
         env.Append(_LIBFLAGS=" -Wl,--end-group")

platformio/compat.py

@@ -26,6 +26,7 @@
 PY2 = sys.version_info[0] == 2
 CYGWIN = sys.platform.startswith("cygwin")
 WINDOWS = sys.platform.startswith("win")
+MACOS = sys.platform.startswith("darwin")
 
 
 def get_filesystem_encoding():