File: ac_compile_warnings.m4

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dnl Available from the GNU Autoconf Macro Archive at:
dnl http://www.gnu.org/software/ac-archive/htmldoc/ac_compile_warnings.html
dnl
dnl Modified from original to increase the warning levels from -Wall
AC_DEFUN([AC_COMPILE_WARNINGS],
[AC_MSG_CHECKING(maximum warning verbosity option)
if test -n "$CXX"
then
  if test "$GXX" = "yes"
  then
    ac_compile_warnings_opt='-Wall -ansi -pedantic'
  fi
  CXXFLAGS="$CXXFLAGS $ac_compile_warnings_opt"
  ac_compile_warnings_msg="$ac_compile_warnings_opt for C++"
fi

if test -n "$CC"
then
  if test "$GCC" = "yes"
  then
    ac_compile_warnings_opt='-Wall -ansi -pedantic'
  fi
  CFLAGS="$CFLAGS $ac_compile_warnings_opt"
  ac_compile_warnings_msg="$ac_compile_warnings_msg $ac_compile_warnings_opt for C"
fi
AC_MSG_RESULT($ac_compile_warnings_msg)
unset ac_compile_warnings_msg
unset ac_compile_warnings_opt
])