diff options
Diffstat (limited to 'cpukit/aclocal/check-func.m4')
| -rw-r--r-- | cpukit/aclocal/check-func.m4 | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/cpukit/aclocal/check-func.m4 b/cpukit/aclocal/check-func.m4 new file mode 100644 index 0000000000..92787e1b87 --- /dev/null +++ b/cpukit/aclocal/check-func.m4 @@ -0,0 +1,23 @@ +# $Id$ + +# Check whether FUNCTION is declared in INCLUDES +# and whether rtems_stub_FUNCTION or FUNCTION is supplied. + +# RTEMS_CHECK_FUNC(FUNCTION[,INCLUDES]) +AC_DEFUN([RTEMS_CHECK_FUNC], +[AC_REQUIRE([RTEMS_CHECK_NEWLIB]) +AC_CHECK_DECLS([$1],,,[$2]) + +AC_CACHE_CHECK([for $1],[ac_cv_$1],[ + AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[$2]],[[rtems_stub_$1()]])], + [ac_cv_$1="stub"], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM([[$2]],[[$1()]])], + [ac_cv_$1="yes"], + [ac_cv_$1="no"]) + ]) + ]) +AS_IF([test "$ac_cv_$1" = yes], + [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_]$1),[1],[Define to 1 if you have the `$1' function.])]) +]) |