Add -S/--supported switch to 'mbed compile' to list all targets vs toolchains matrix

Author: screamerbg

mbed/mbed.py

@@ -1709,14 +1709,15 @@ def status_(ignore=False):
 @subcommand('compile',
     dict(name=['-t', '--toolchain'], help='Compile toolchain. Example: ARM, uARM, GCC_ARM, IAR'),
     dict(name=['-m', '--mcu'], help='Compile target. Example: K64F, NUCLEO_F401RE, NRF51822...'),
-    dict(name=['-c', '--clean'], action='store_true', help='Clean the build directory before compiling'),
     dict(name='--source', action='append', help='Source directory. Default: . (current dir)'),
     dict(name='--build', help='Build directory. Default: .build/'),
+    dict(name=['-c', '--clean'], action='store_true', help='Clean the build directory before compiling'),
+    dict(name=['-S', '--supported'], dest='supported', action='store_true', help='Displays supported matrix of targets and toolchains'),
     dict(name='--library', dest='compile_library', action='store_true', help='Compile the current %s as a static library.' % cwd_type),
     dict(name='--tests', dest='compile_tests', action='store_true', help='Compile tests in TESTS directory.'),
     dict(name='--test_spec', dest="test_spec", help="Destination path for a test spec file that can be used by the Greentea automated test tool. (Default is 'test_spec.json')"),
     help='Compile program using the native mbed OS build system.')
-def compile(toolchain=None, mcu=None, clean=False, source=False, build=False, compile_library=False, compile_tests=False, test_spec="test_spec.json"):
+def compile(toolchain=None, mcu=None, source=False, build=False, clean=False, supported=False, compile_library=False, compile_tests=False, test_spec="test_spec.json"):
     args = remainder
     # Gather remaining arguments
     args = remainder
@@ -1727,16 +1728,23 @@ def compile(toolchain=None, mcu=None, clean=False, source=False, build=False, co
 
     with cd(program.path):
         tools_dir = os.path.abspath(program.get_tools())
-        target = program.get_mcu(mcu)
-        tchain = program.get_toolchain(toolchain)
-        macros = program.get_macros()
-
         env = os.environ.copy()
         env['PYTHONPATH'] = os.path.abspath(program.path)
 
     if not source or len(source) == 0:
         source = [os.path.relpath(program.path, orig_path)]
 
+    if supported:
+        popen(['python', '-u', os.path.join(tools_dir, 'make.py')]
+              + (['-S'] if supported else []) + (['-v'] if verbose else [])
+              + args,
+              env=env)
+        return
+
+    target = program.get_mcu(mcu)
+    tchain = program.get_toolchain(toolchain)
+    macros = program.get_macros()
+
     if compile_tests:
         # Compile tests
         if not build: