diff options
Diffstat (limited to 'cpukit/aclocal/check-newlib.m4')
| -rw-r--r-- | cpukit/aclocal/check-newlib.m4 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/cpukit/aclocal/check-newlib.m4 b/cpukit/aclocal/check-newlib.m4 new file mode 100644 index 0000000000..a26624702e --- /dev/null +++ b/cpukit/aclocal/check-newlib.m4 @@ -0,0 +1,31 @@ +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 RTEMS newlib], + rtems_cv_use_newlib, + [ +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() + AS_IF([test -z "$rtems_cv_use_newlib"], + [AC_TRY_LINK( + [extern void rtems_provides_crt0() ;], + [rtems_provides_crt0()], + rtems_cv_use_newlib="yes", + rtems_cv_use_newlib="no")] + ) + ]) + RTEMS_USE_NEWLIB="$rtems_cv_use_newlib" + AC_SUBST(RTEMS_USE_NEWLIB) + + AS_IF([test x"${RTEMS_USE_NEWLIB}" = x"yes"], + [ AC_DEFINE_UNQUOTED(RTEMS_NEWLIB,1,[if using newlib])] + ) +]) |