# rename(2) can't rename long filenames
d_rename=undef
+# for ext/IPC/SysV/SysV.xs
+ccflags="$ccflags -DPERL_ISC"
+
# You can also include -D_SYSV3 to pick up "traditionally visible"
# symbols hidden by name-space pollution rules. This raises some
# compilation "redefinition" warnings, but they appear harmless.