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dnl Turn on the additional warnings last, so -Werror doesn't affect other tests.
AC_DEFUN([PLANNER_COMPILE_WARNINGS],[
if test -f $srcdir/autogen.sh; then
default_compile_warnings="error"
else
default_compile_warnings="no"
fi
AC_ARG_WITH(compile-warnings, [ --with-compile-warnings=[no/yes/error] Compiler warnings ], [enable_compile_warnings="$withval"], [enable_compile_warnings="$default_compile_warnings"])
warnCFLAGS=
if test "x$GCC" != xyes; then
enable_compile_warnings=no
fi
warning_flags=
realsave_CFLAGS="$CFLAGS"
case "$enable_compile_warnings" in
no)
warning_flags=
;;
yes)
warning_flags="-Wall -Wunused -Wmissing-prototypes -Wmissing-declarations"
;;
maximum|error)
warning_flags="-Wall -Wunused -Wchar-subscripts -Wmissing-declarations -Wmissing-prototypes -Wnested-externs -Wpointer-arith"
CFLAGS="$warning_flags $CFLAGS"
for option in -Wno-sign-compare -Wno-pointer-sign -Wno-return-type; do
SAVE_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $option"
AC_MSG_CHECKING([whether gcc understands $option])
AC_TRY_COMPILE([], [],
has_option=yes,
has_option=no,)
CFLAGS="$SAVE_CFLAGS"
AC_MSG_RESULT($has_option)
if test $has_option = yes; then
warning_flags="$warning_flags $option"
fi
unset has_option
unset SAVE_CFLAGS
done
unset option
if test "$enable_compile_warnings" = "error" ; then
warning_flags="$warning_flags -Werror"
fi
;;
*)
AC_MSG_ERROR(Unknown argument '$enable_compile_warnings' to --enable-compile-warnings)
;;
esac
CFLAGS="$realsave_CFLAGS"
AC_MSG_CHECKING(what warning flags to pass to the C compiler)
AC_MSG_RESULT($warning_flags)
WARN_CFLAGS="$warning_flags"
AC_SUBST(WARN_CFLAGS)
])
dnl a macro to check for ability to create python extensions
dnl AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
dnl function also defines PYTHON_INCLUDES
AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
[AC_REQUIRE([AM_PATH_PYTHON])
AC_MSG_CHECKING(for headers required to compile python extensions)
dnl deduce PYTHON_INCLUDES
py_prefix=`$PYTHON -c "import sys; print sys.prefix"`
py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
if test "$py_prefix" != "$py_exec_prefix"; then
PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
fi
AC_SUBST(PYTHON_INCLUDES)
dnl check if the headers exist:
save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
AC_TRY_CPP([#include <Python.h>],dnl
[AC_MSG_RESULT(found)
$1],dnl
[AC_MSG_RESULT(not found)
$2])
CPPFLAGS="$save_CPPFLAGS"
# Check for Python library path
AC_MSG_CHECKING([for Python library path])
python_path=`echo $PYTHON | sed "s,/bin.*$,,"`
for i in "$python_path/lib/python$PYTHON_VERSION/config/" "$python_path/lib/python$PYTHON_VERSION/" "$python_path/lib/python/config/" "$python_path/lib/python/" "$python_path/" ; do
python_path=`find $i -type f -name libpython$PYTHON_VERSION.* -print | sed "1q"`
if test -n "$python_path" ; then
break
fi
done
python_path=`echo $python_path | sed "s,/libpython.*$,,"`
AC_MSG_RESULT([$python_path])
if test -z "$python_path" ; then
AC_MSG_ERROR([cannot find Python library path])
fi
AC_SUBST([PYTHON_LDFLAGS],["-L$python_path -lpython$PYTHON_VERSION"])
])
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