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dnl $Id$
AC_DEFUN(RTEMS_CHECK_NEWLIB,
[dnl
AC_REQUIRE([RTEMS_PROG_CC_FOR_TARGET])dnl
AC_REQUIRE([RTEMS_CANONICALIZE_TOOLS])dnl
AC_CACHE_CHECK([for newlib],
rtems_cv_use_newlib,
[
rtems_save_CC=$CC
CC=$CC_FOR_TARGET
dnl some versions of newlib provide not_required_by_rtems
AC_TRY_LINK(
[extern void not_required_by_rtems() ;],
[not_required_by_rtems()],
rtems_cv_use_newlib="yes")
dnl some versions of newlib provide rtems_provides_crt0()
if test -z "$rtems_cv_use_newlib"; then
AC_TRY_LINK(
[extern void rtems_provides_crt0() ;],
[rtems_provides_crt0()],
rtems_cv_use_newlib="yes",
rtems_cv_use_newlib="no")
fi
CC=$rtems_save_CC])
RTEMS_USE_NEWLIB="$rtems_cv_use_newlib"
AC_SUBST(RTEMS_USE_NEWLIB)
])
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