Track supported information within toolchain clasess

tools/build_api.py

@@ -1072,7 +1072,10 @@ def get_unique_supported_toolchains(release_targets=None):
                       If release_targets is not specified, then it queries all
                       known targets
     """
-    return ["ARM", "uARM", "GCC_ARM", "IAR"]
+    return [
+        name for name, cls in TOOLCHAIN_CLASSES.items()
+        if cls.OFFICIALLY_SUPPORTED
+    ]
 
 
 def _lowercase_release_version(release_version):

tools/toolchains/__init__.py

@@ -48,6 +48,8 @@
 CPU_COEF = 1
 
 class mbedToolchain:
+    OFFICILLY_SUPPORTED = False
+
     # Verbose logging
     VERBOSE = True
 

tools/toolchains/arm.py

@@ -337,6 +337,7 @@ def redirect_symbol(source, sync, build_dir):
 
 
 class ARM_STD(ARM):
+    OFFICIALLY_SUPPORTED = True
     def __init__(self, target, notify=None, macros=None,
                  build_profile=None, build_dir=None):
         ARM.__init__(self, target, notify, macros, build_dir=build_dir,
@@ -347,6 +348,7 @@ def __init__(self, target, notify=None, macros=None,
 
 class ARM_MICRO(ARM):
     PATCHED_LIBRARY = False
+    OFFICIALLY_SUPPORTED = True
     def __init__(self, target, notify=None, macros=None,
                  silent=False, extra_verbose=False, build_profile=None,
                  build_dir=None):
@@ -357,6 +359,7 @@ def __init__(self, target, notify=None, macros=None,
             raise NotSupportedException("ARM/uARM compiler support is required for ARM build")
 
 class ARMC6(ARM_STD):
+    OFFICIALLY_SUPPORTED = False
     SHEBANG = "#! armclang -E --target=arm-arm-none-eabi -x c"
     SUPPORTED_CORES = ["Cortex-M0", "Cortex-M0+", "Cortex-M3", "Cortex-M4",
                        "Cortex-M4F", "Cortex-M7", "Cortex-M7F", "Cortex-M7FD",

tools/toolchains/gcc.py

@@ -25,6 +25,7 @@
 from tools.utils import run_cmd, NotSupportedException
 
 class GCC(mbedToolchain):
+    OFFICIALLY_SUPPORTED = True
     LINKER_EXT = '.ld'
     LIBRARY_EXT = '.a'
 

tools/toolchains/iar.py

@@ -24,6 +24,7 @@
 from tools.utils import run_cmd, NotSupportedException
 
 class IAR(mbedToolchain):
+    OFFICIALLY_SUPPORTED = True
     LIBRARY_EXT = '.a'
     LINKER_EXT = '.icf'
     STD_LIB_NAME = "%s.a"