On Fri, 2022-10-28 at 09:15 +0900, suzuki toshiya wrote: > AC_CONFIG_COMMANDS([dof_free_bit.h], > [AS_TMPDIR([alberta]) > TMPDIR=${tmp} > > rm -rf ${TMPDIR}], > [BITS=$(( ${ac_cv_sizeof_long} * 8 ))]) Oh yeah, that's it. If you're going to remove TMPDIR you better also clear it!! unset TMPDIR I don't know what this AS_TMPDIR() macro does; I can't find it in a quick search.