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 -Wshadow"
   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 ${enableval} for --enable-werror) ;;
  12    esac])
  13
  14 # Enable -Wno-format by default when using gcc on mingw
  15 case "${host}" in
  16   *-*-mingw32*)
  17     if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
  18       GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Wno-format"
  19     fi
  20     ;;
  21   *) ;;
  22 esac
  23
  24 # Enable -Werror by default when using gcc
  25 if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
  26     ERROR_ON_WARNING=yes
  27 fi
  28
  29 NO_WERROR=
  30 if test "${ERROR_ON_WARNING}" = yes ; then
  31     GCC_WARN_CFLAGS="$GCC_WARN_CFLAGS -Werror"
  32     NO_WERROR="-Wno-error"
  33 fi
  34
  35 if test "${GCC}" = yes ; then
  36   WARN_CFLAGS="${GCC_WARN_CFLAGS}"
  37 fi
  38
  39 AC_ARG_ENABLE(build-warnings,
  40 [  --enable-build-warnings enable build-time compiler warnings],
  41 [case "${enableval}" in
  42   yes)  WARN_CFLAGS="${GCC_WARN_CFLAGS}";;
  43   no)   if test "${GCC}" = yes ; then
  44           WARN_CFLAGS="-w"
  45         fi;;
  46   ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
  47         WARN_CFLAGS="${GCC_WARN_CFLAGS} ${t}";;
  48   *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
  49         WARN_CFLAGS="${t} ${GCC_WARN_CFLAGS}";;
  50   *)    WARN_CFLAGS=`echo "${enableval}" | sed -e "s/,/ /g"`;;
  51 esac])
  52
  53 if test x"$silent" != x"yes" && test x"$WARN_CFLAGS" != x""; then
  54   echo "Setting warning flags = $WARN_CFLAGS" 6>&1
  55 fi
  56
  57 AC_SUBST(WARN_CFLAGS)
  58 AC_SUBST(NO_WERROR)
  59 ])