On Thu, 2021-09-02 at 16:24 -0300, Bruno Meneguele wrote: > + AC_ARG_WITH([default_hash], > + AS_HELP_STRING([--with-default-hash=ALGORITHM], [specifies the default hash algorithm to be used]), > + [HASH_ALGO=$withval], > + [HASH_ALGO=sha1]) > + > + AC_CHECK_HEADER([$HASH_INFO_HEADER], > + [HAVE_HASH_INFO_HEADER=yes], > + [AC_MSG_WARN([$HASH_INFO_HEADER not found.])]) > + > + if test "x$HAVE_HASH_INFO_HEADER" = "x"; then > + AC_MSG_RESULT([using $HASH_ALGO algorithm as default hash algorith]) > + AC_DEFINE_UNQUOTED(DEFAULT_HASH_ALGO, "$HASH_ALGO", [Define default hash algorithm]) > + else > + AC_PROG_SED() > + AC_PROG_GREP() > + $SED -n 's/HASH_ALGO_\(.*\),/\L\1\E/p' $HASH_INFO_HEADER | $GREP -w -i $HASH_ALGO > /dev/null This does an a case insensitive test for the hash algorithm, but the code itself doesn't support upper case hash algorithms (e.g. SHA1, SHA256). thanks, Mimi > + have_hash=$? > + > + if test $have_hash -ne 0; then > + AC_MSG_ERROR([$HASH_ALGO algorithm specified, but not provided by the kernel], 1) > + else > + AC_MSG_NOTICE([using $HASH_ALGO as default hash algorithm]) > + AC_DEFINE_UNQUOTED(DEFAULT_HASH_ALGO, "$HASH_ALGO", [Define default hash algorithm]) > + fi
