c_build_helper: Split cc command line

Optionally the CC/HOSTCC environment variable can hold the command to
invoke the C compiler, however this command can also contain extra
arguments, not only the binary name. In this particular case Python
was treating the whole value as a single binary name, and was trying
to execute as such (e.g. "cc -arg1 -arg2" instead of "cc" and the arguments
separately), which results in failure.

Split the compiler command into its components to invoke it correctly.

Signed-off-by: Gyorgy Sarvari <[email protected]>

scripts/mbedtls_framework/c_build_helper.py

@@ -98,7 +98,7 @@ def compile_c_file(c_filename, exe_filename, include_dirs):
     cc = os.getenv('HOSTCC', None)
     if cc is None:
         cc = os.getenv('CC', 'cc')
-    cmd = [cc]
+    cmd = cc.split()
 
     proc = subprocess.Popen(cmd,
                             stdout=subprocess.DEVNULL,