Probably due to confusion as to OPT_CFLAGS meant "CFLAGS for optimization" or "CFLAGS for optimized/product build", whenever OPT_CFLAGS/foo.o is set, the general value of OPT_CFLAGS is discarded.

However, OPT_CFLAGS include -g (or -g0 -xs on solaris) from FDS, and this flag is lost for these files.

This patch is a minimal fix to restore the -g flag to these files.