AC_DEFUN([ENSC_ENABLE_DIETLIBC],
[
AC_MSG_CHECKING([whether to enable dietlibc])
+
+ AC_ARG_VAR(DIET, [The 'diet' wrapper (default: diet)])
+ AC_ARG_VAR(DIETFLAGS, [Flags passed to the 'diet' wrapper (default: -O)])
+
+ : ${DIET:=diet}
+ : ${DIETFLAGS=-Os}
+
AC_ARG_ENABLE([dietlibc],
- [AC_HELP_STRING([--disable-dietlibc],
- [do not use dietlibc (default: use dietlibc)])],
+ [AS_HELP_STRING([--disable-dietlibc],
+ [do not use dietlibc resp. enforce its usage
+ (with --enable-dietlibc) (default: autodetect dietlibc)])],
[case "$enableval" in
- yes) use_dietlibc=forced;;
- no) use_dietlibc=forced_no;;
- *) AC_MSG_ERROR(['$enableval' is not a valid value for --enable-dietlibc]);;
+ (yes) use_dietlibc=forced;;
+ (no) use_dietlibc=forced_no;;
+ (*) AC_MSG_ERROR(['$enableval' is not a valid value for --enable-dietlibc]);;
esac],
- [: ${DIET:=diet}
- which "$DIET" >/dev/null 2>/dev/null && use_dietlibc=detected || use_dietlibc=detected_no])
+ [which "$DIET" >/dev/null 2>/dev/null && use_dietlibc=detected || use_dietlibc=detected_no])
- if test "$use_dietlibc" = detected -a '$2'; then
- _dietlibc_ver=$(${DIET:-diet} -v 2>&1 | sed '1p;d')
+ if test "$use_dietlibc" = detected -a "$2"; then
+ _dietlibc_ver=$($DIET -v 2>&1 | sed '1p;d')
_dietlibc_ver=${_dietlibc_ver##*diet version }
_dietlibc_ver=${_dietlibc_ver##*dietlibc-}
_dietlibc_ver_maj=${_dietlibc_ver%%.*}
_dietlibc_ver_min=${_dietlibc_ver##*.}
_dietlibc_ver_min=${_dietlibc_ver_min%%[[!0-9]]*}
- _dietlibc_cmp=$2
+ _dietlibc_cmp="$2"
_dietlibc_cmp_maj=${_dietlibc_cmp%%.*}
_dietlibc_cmp_min=${_dietlibc_cmp##*.}