Subversion Repositories openrisc_2011-10-31

dnl Common configure.in fragment

AC_DEFUN([AM_BINUTILS_WARNINGS],[

GCC_WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"

AC_EGREP_CPP([^[0-3]$],[__GNUC__],,GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wshadow")

AC_ARG_ENABLE(werror,

  [  --enable-werror         treat compile warnings as errors],

  [case "${enableval}" in

     yes | y) ERROR_ON_WARNING="yes" ;;

     no | n)  ERROR_ON_WARNING="no" ;;

     *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;

   esac])

# Disable -Wformat by default when using gcc on mingw

case "${host}" in

  *-*-mingw32*)

    if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then

      GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wno-format"

    fi

    ;;

  *) ;;

esac

# Enable -Werror by default when using gcc

if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then

    ERROR_ON_WARNING=yes

fi

NO_WERROR=

if test "${ERROR_ON_WARNING}" = yes ; then

    GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Werror"

    NO_WERROR="-Wno-error"

fi

if test "${GCC}" = yes ; then

  WARN_CFLAGS="${GCC_WARN_CFLAGS}"

fi

AC_ARG_ENABLE(build-warnings,

[  --enable-build-warnings enable build-time compiler warnings],

[case "${enableval}" in

  yes)  WARN_CFLAGS="${GCC_WARN_CFLAGS}";;

  no)   if test "${GCC}" = yes ; then

          WARN_CFLAGS="-w"

        fi;;

  ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`

        WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";;

  *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`

        WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";;

  *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;

esac])

if test x"$silent" != x"yes" && test x"$WARN_CFLAGS" != x""; then

  echo "Setting warning flags = $WARN_CFLAGS" 6>&1

fi

AC_SUBST(WARN_CFLAGS)

AC_SUBST(NO_WERROR)

])