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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [trunk/] [rtos/] [rtems/] [aclocal/] [check-newlib.m4] - Rev 492
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dnl $Id: check-newlib.m4,v 1.2 2001-09-27 11:59:11 chris Exp $
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 int not_required_by_rtems() ;],
[not_required_by_rtems()],
rtems_cv_use_newlib="yes")
dnl older versions of newlib provided rtems_provides_crt0
if test -z "$rtems_cv_use_newlib"; then
AC_TRY_LINK(
[extern int rtems_provides_crt0 ;],
[rtems_provides_crt0 = 0],
rtems_cv_use_newlib="yes",
rtems_cv_use_newlib="no")
fi
CC=$rtems_save_CC])
RTEMS_USE_NEWLIB="$rtems_cv_use_newlib"
AC_SUBST(RTEMS_USE_NEWLIB)
])
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