cmake: separate app from idf lib project

mbedtls: import mbedtls using unmodified cmake file

components/partition_table/gen_esp32part.py

@@ -29,6 +29,7 @@ import struct
 import sys
 import hashlib
 import binascii
+import errno
 
 MAX_PARTITION_LENGTH = 0xC00   # 3K for partition data (96 entries) leaves 1K in a 4K sector for signature
 MD5_PARTITION_BEGIN = b"\xEB\xEB" + b"\xFF" * 14 # The first 2 bytes are like magic numbers for MD5 sum
@@ -480,6 +481,16 @@ def main():
             raise InputError("Partitions defined in '%s' occupy %.1fMB of flash (%d bytes) which does not fit in configured flash size %dMB. Change the flash size in menuconfig under the 'Serial Flasher Config' menu." %
                              (args.input.name, table_size / 1024.0 / 1024.0, table_size, size_mb))
 
+    # Make sure that the output directory is created
+    output_dir = os.path.abspath(os.path.dirname(args.output))
+
+    if not os.path.exists(output_dir):
+        try:
+            os.makedirs(output_dir)
+        except OSError as exc: 
+            if exc.errno != errno.EEXIST:
+                raise
+
     if input_is_binary:
         output = table.to_csv()
         with sys.stdout if args.output == '-' else open(args.output, 'w') as f: