clang doesn't support the gnu_printf attribute that OpenOCD uses if
__GNUC__ and __GNUC_MINOR__ indicates gcc >= 4.4.
Most clang builds set __GNUC__/__GNUC_MINOR__ to 4.2 for historical
reasons, so they don't trigger this condition; however, some builds set
it to something much higher to work around code using __GNUC__ to
determine if a feature that does exist in clang (but not gcc 4.2) is
available, causing OpenOCD to use attribute gnu_printf.
The problem can be reproduced without a special clang build by adding
-fgnuc-version=14.1 to CFLAGS.
Change-Id: I3c0832d4201578b116c5214203f95b6153dad30e
Signed-off-by: Bernhard Rosenkränzer <bero@baylibre.com>
Reviewed-on: https://review.openocd.org/c/openocd/+/8258
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
ccc5c1642b