dnl $Id$ dnl Copyright (C) 2002 Enrico Scholz dnl dnl This program is free software; you can redistribute it and/or modify dnl it under the terms of the GNU General Public License as published by dnl the Free Software Foundation; version 2 of the License. dnl dnl This program is distributed in the hope that it will be useful, dnl but WITHOUT ANY WARRANTY; without even the implied warranty of dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the dnl GNU General Public License for more details. dnl dnl You should have received a copy of the GNU General Public License dnl along with this program; if not, write to the Free Software dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. AC_DEFUN([_ENSC_DIETLIBC_C99], [ AH_TEMPLATE([ENSC_DIETLIBC_C99], [Define to 1 if dietlibc supports C99]) AC_CACHE_CHECK([whether dietlibc supports C99], [ensc_cv_c_dietlibc_c99], [ _ensc_dietlibc_c99_old_CFLAGS=$CFLAGS _ensc_dietlibc_c99_old_CC=$CC CFLAGS="-std=c99" CC="${DIET:-diet} $CC" AC_LANG_PUSH(C) AC_COMPILE_IFELSE([/* */],[ AC_COMPILE_IFELSE([ #include #include #if defined(inline) # error 'inline' badly defined #endif volatile uint64_t a; ], [ensc_cv_c_dietlibc_c99=yes], [ensc_cv_c_dietlibc_c99=no])], [ensc_cv_c_dietlibc_c99='skipped (compiler does not support C99)']) AC_LANG_POP CC=$_ensc_dietlibc_c99_old_CC CFLAGS=$_ensc_dietlibc_c99_old_CFLAGS ]) if test x"$ensc_cv_c_dietlibc_c99" = xyes; then AC_DEFINE(ENSC_DIETLIBC_C99,1) fi ]) dnl Usage: ENSC_ENABLE_DIETLIBC([,]) dnl ... automake-conditional which will be set when dnl dietlibc shall be enabled AC_DEFUN([ENSC_ENABLE_DIETLIBC], [ AC_MSG_CHECKING([whether to enable dietlibc]) AC_ARG_ENABLE([dietlibc], [AC_HELP_STRING([--disable-dietlibc], [do not use dietlibc (default: use 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]);; esac], [: ${DIET:=diet} which "$DIET" >/dev/null 2>/dev/null && use_dietlibc=detected || use_dietlibc=detected_no]) if test "$use_dietlibc" = detected -a '$2'; then _dietlibc_ver=$(${DIET:-diet} -v 2>&1 | sed '1p;d') _dietlibc_ver=${_dietlibc_ver##*dietlibc-} _dietlibc_ver_maj=${_dietlibc_ver%%.*} _dietlibc_ver_min=${_dietlibc_ver##*.} _dietlibc_cmp=$2 _dietlibc_cmp_maj=${_dietlibc_cmp%%.*} _dietlibc_cmp_min=${_dietlibc_cmp##*.} let _dietlibc_ver=_dietlibc_ver_maj*1000+_dietlibc_ver_min 2>/dev/null || _dietlibc_ver=0 let _dietlibc_cmp=_dietlibc_cmp_maj*1000+_dietlibc_cmp_min test $_dietlibc_ver -ge $_dietlibc_cmp || use_dietlibc=detected_old fi ensc_have_dietlibc=no case x"$use_dietlibc" in xdetected) AM_CONDITIONAL($1, true) AC_MSG_RESULT([yes (autodetected)]) ensc_have_dietlibc=yes ;; xforced) AM_CONDITIONAL($1, true) AC_MSG_RESULT([yes (forced)]) ensc_have_dietlibc=yes ;; xdetected_no) AM_CONDITIONAL($1, false) AC_MSG_RESULT([no (detected)]) ;; xdetected_old) AM_CONDITIONAL($1, false) AC_MSG_RESULT([no (too old; $2+ required)]) ;; xforced_no) AM_CONDITIONAL($1, false) AC_MSG_RESULT([no (forced)]) ;; *) AC_MSG_ERROR([internal error, use_dietlibc was "$use_dietlibc"]) ;; esac if test x"$ensc_have_dietlibc" != xno; then _ENSC_DIETLIBC_C99 fi ])