Description

The following error occurs when I launch the PlanAhead tool:

>planAhead
terminate called after throwing an instance of 'stlp_std::runtime_error'
what(): Unable to create facet ctype from name 'c'
/DISK/system/soft/xilinx/ise13.2-00.000-00/ISE_DS/PlanAhead/bin/rdiArgs.sh:
line 72: 13268 Aborted "$RDI_PROG" "$@"

Solution

This error occurs on Linux systems when the LANG variable is set to 'c' (lower case). Setting the LANG variable to a valid value such as 'C' or "En_US.UTF-8" resolves the issue.

In the PlanAhead 13.3 tool, an invalid LANG value is captured and a warning similar to the following is issued:

"WARNING: [Common-191] Locale 'LANG=c' not supported by C library, falling back to classic locale 'C'."