The following error turns up during the configure step:
checking for mutexes... (cached) no
configure: error: Unable to find a mutex implementation
The culprit seems to be the following (no-longer necessary?) line from /usr/share/crossdev/linux/linux-gnueabi:
I just stumbled into the same problem. Is there any fix?
For me it fails for version 4.8.30
Commenting the lines suggested by Arun Raghaven resolved the issue, sys-libs/db compiled without errors