Implement "whole-archive" hook for mbed-lib and LINCOM command

platformio/builder/scripts/frameworks/mbed.py

@@ -177,6 +177,25 @@ def get_build_flags(data):
     return flags
 
 
+def _mbed_whole_archive_hook(flags):
+    if not isinstance(flags, list):
+        return flags
+
+    for pos, flag in enumerate(flags[:]):
+        if isinstance(flag, basestring):
+            continue
+        flags.insert(pos, "-Wl,-whole-archive")
+        flags.insert(pos + 2, "-Wl,-no-whole-archive")
+
+    return flags
+
+
+env.Replace(
+    _mbed_whole_archive_hook=_mbed_whole_archive_hook,
+    _LIBFLAGS="${_mbed_whole_archive_hook(%s)}" % env.get("_LIBFLAGS")[2:-1]
+)
+
+
 board_type = env.subst("$BOARD")
 variant = MBED_VARIANTS[
     board_type] if board_type in MBED_VARIANTS else board_type.upper()
@@ -187,6 +206,8 @@ def get_build_flags(data):
 variant_dir = join("$PLATFORMFW_DIR", "variant", variant)
 
 env.Replace(
+    _mbed_whole_archive_hook=_mbed_whole_archive_hook,
+    _LIBFLAGS="${_mbed_whole_archive_hook(%s)}" % env.get("_LIBFLAGS")[2:-1],
     CPPFLAGS=build_flags.get("CPPFLAGS", []),
     CFLAGS=build_flags.get("CFLAGS", []),
     CXXFLAGS=build_flags.get("CXXFLAGS", []),