bfd/warning.m4

   1 dnl Common configure.in fragment
   2
   3 AC_DEFUN([AM_BINUTILS_WARNINGS],[
   4 GCC_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     GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Werror"
  22     NO_WERROR="-Wno-error"
  23 fi
  24
  25 if test "${GCC}" = yes ; then
  26   WARN_CFLAGS="${GCC_WARN_CFLAGS}"
  27 fi
  28
  29 AC_ARG_ENABLE(build-warnings,
  30 [  --enable-build-warnings enable build-time compiler warnings],
  31 [case "${enableval}" in
  32   yes)  WARN_CFLAGS="${GCC_WARN_CFLAGS}";;
  33   no)   if test "${GCC}" = yes ; then
  34           WARN_CFLAGS="-w"
  35         fi;;
  36   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
  37         WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";;
  38   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
  39         WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";;
  40   *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
  41 esac])
  42
  43 if test x"$silent" != x"yes" && test x"$WARN_CFLAGS" != x""; then
  44   echo "Setting warning flags = $WARN_CFLAGS" 6>&1
  45 fi
  46
  47 AC_SUBST(WARN_CFLAGS)
  48 AC_SUBST(NO_WERROR)
  49 ])