- [x] I looked for a similar issue and couldn't find any.
- [ ] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/ -- no, because the issue is about compilation.
- [x] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

a6b64082b43226f51dff69a5e241049cf5e7eb83 makes compiling fail like so:

```sh
[...]
  CC crypto/g_crypt_tinyaes.c
crypto/g_crypt_tinyaes.c:251:7: error: use of undeclared identifier 'GF_ECB'
        case GF_ECB:
             ^
  CC crypto/tiny_aes.c
1 error generated.
make[1]: *** [crypto/g_crypt_tinyaes.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [all] Error 2
```
compilation on mac os fails after latest change in tinyaes.c
This is a GitHub Issue
repo:gpac
owner:gpac
Title : compilation on mac os fails after latest change in tinyaes.c
Issue date:

--- start body ---
- [x] I looked for a similar issue and couldn't find any.
- [ ] I tried with the latest version of GPAC. Installers available at http://gpac.io/downloads/gpac-nightly-builds/ -- no, because the issue is about compilation.
- [x] I give enough information for contributors to reproduce my issue (meaningful title, github labels, platform and compiler, command-line ...). I can share files anonymously with this dropbox: https://www.mediafire.com/filedrop/filedrop_hosted.php?drop=eec9e058a9486fe4e99c33021481d9e1826ca9dbc242a6cfaab0fe95da5e5d95

a6b64082b43226f51dff69a5e241049cf5e7eb83 makes compiling fail like so:

```sh
[...]
  CC crypto/g_crypt_tinyaes.c
crypto/g_crypt_tinyaes.c:251:7: error: use of undeclared identifier 'GF_ECB'
        case GF_ECB:
             ^
  CC crypto/tiny_aes.c
1 error generated.
make[1]: *** [crypto/g_crypt_tinyaes.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [all] Error 2
```
--- end body ---

None