Incorporated review comments

Author: rajkan01

TESTS/configs/baremetal.json

@@ -35,29 +35,26 @@
         "qspif"
     ],
     "target_overrides": {
-        "K64F": {
-            "target.default_lib": "small",
+        "*": {
             "mbed-trace.fea-ipv6": false
         },
+        "K64F": {
+            "target.default_lib": "small"
+        },
         "K66F": {
-            "target.default_lib": "small",
-            "mbed-trace.fea-ipv6": false
+            "target.default_lib": "small"
         },
         "NUCLEO_F303RE": {
-            "target.default_lib": "small",
-            "mbed-trace.fea-ipv6": false
+            "target.default_lib": "small"
         },
         "NUCLEO_F411RE": {
-            "target.default_lib": "small",
-            "mbed-trace.fea-ipv6": false
+            "target.default_lib": "small"
         },
         "NUCLEO_F429ZI": {
-            "target.default_lib": "small",
-            "mbed-trace.fea-ipv6": false
+            "target.default_lib": "small"
         },
         "DISCO_L475VG_IOT01A": {
-            "target.default_lib": "small",
-            "mbed-trace.fea-ipv6": false
+            "target.default_lib": "small"
         }
      }
 }

tools/toolchains/gcc.py

@@ -48,7 +48,7 @@ def __init__(self, target,  notify=None, macros=None, build_profile=None,
 
         tool_path = TOOLCHAIN_PATHS['GCC_ARM']
         # Add flags for current size setting
-        default_lib = ""
+        default_lib = "std"
         if hasattr(target, "default_lib"):
             self.check_c_lib_supported(target, "gcc_arm")
             default_lib = target.default_lib