Thanks for your answer Andreas. I tried to compile with:
```
./configure --enable-stlink
```
The ST Fork of openOCD doesn't compile:
```
./src/helper/types.h:194:9: error: ‘misc_items’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
194 | buf[0] = (uint8_t) (val >> 0);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
src/jtag/drivers/stlink_usb.c:4595:20: note: ‘misc_items’ was declared here
4595 | unsigned int cnt, misc_items;
| ^~~~~~~~~~
```
However, the official openOCD compiles with this option.
Going back to the board with this new openocd, it seems that I have at least an access right issue:
```
$ openocd -f board/stm32h745i-disco.cfg
Open On-Chip Debugger 0.11.0-dirty (2022-01-17-09:32)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : clock speed 1800 kHz
Error: libusb_open() failed with LIBUSB_ERROR_ACCESS
Error: open failed
```
When I try to bypass this issue, I run into another one:
```
$ sudo openocd -f board/stm32h745i-disco.cfg
Open On-Chip Debugger 0.11.0-dirty (2022-01-17-09:32)
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
Info : The selected transport took over low-level target control. The results might differ compared to plain JTAG/SWD
Info : Listening on port 6666 for tcl connections
Info : Listening on port 4444 for telnet connections
Info : clock speed 1800 kHz
Info : STLINK V3J3M2 (API v3) VID:PID 0483:374E
Info : Target voltage: 3.279681
Error: init mode failed (unable to connect to the target)
```
Any clue ?
