bfd/warning.m4

   1 dnl Common configure.in fragment
   2
   3 AC_DEFUN([AM_BINUTILS_WARNINGS],[
   4 WARN_CFLAGS="-W -Wall -Wstrict-prototypes -Wmissing-prototypes"
   5
   6 AC_ARG_ENABLE(werror,
   7   [  --enable-werror    treat compile warnings as errors],
   8   [case "${enableval}" in
   9      yes | y) ERROR_ON_WARNING="yes" ;;
  10      no | n)  ERROR_ON_WARNING="no" ;;
  11      *) AC_MSG_ERROR(bad value ${enableval} for --enable-werror) ;;
  12    esac])
  13
  14 # Enable -Werror by default when using gcc
  15 if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
  16     ERROR_ON_WARNING=yes
  17 fi
  18
  19 NO_WERROR=
  20 if test "${ERROR_ON_WARNING}" = yes ; then
  21     WARN_CFLAGS="$WARN_CFLAGS -Werror"
  22     NO_WERROR="-Wno-error"
  23 fi
  24
  25 AC_ARG_ENABLE(build-warnings,
  26 [  --enable-build-warnings Enable build-time compiler warnings],
  27 [case "${enableval}" in
  28   yes)  ;;
  29   no)   WARN_CFLAGS="-w";;
  30   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
  31         WARN_CFLAGS="${WARN_CFLAGS} ${t}";;
  32   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
  33         WARN_CFLAGS="${t} ${WARN_CFLAGS}";;
  34   *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
  35 esac])
  36
  37 if test x"$silent" != x"yes" && test x"$WARN_CFLAGS" != x""; then
  38   echo "Setting warning flags = $WARN_CFLAGS" 6>&1
  39 fi
  40
  41 AC_SUBST(WARN_CFLAGS)
  42 AC_SUBST(NO_WERROR)
  43 ])