Unclear SHAPE_RESTORE_SHX config option

[thbeu]

If the SHX file is missing the following error message is logged.

shapelib/shpopen.c

Lines 330 to 335 in f948af2

	snprintf(pszMessage, nMessageLen,
	"Unable to open %s.shx or %s.SHX. "
	"Set SHAPE_RESTORE_SHX config option to YES to restore or "
	"create it.",
	pszFullname, pszFullname);
	psHooks->Error(pszMessage);

I wonder what the SHAPE_RESTORE_SHX config option is.

[rouault]

I wonder what the SHAPE_RESTORE_SHX config option is.

that's a GDAL concept

[thbeu]

Shapelib should not know about GDAL concepts.

Background: We use shapelib standalone.

Can the message be fixed by compile time flags (like there already is CPL_MSB or CPL_UNUSED)? Thanks!