AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$version_description"], [UST version description])
AC_PROG_GREP
+AC_PROG_LN_S
# libtool link_all_deplibs fixup. See http://bugs.lttng.org/issues/321.
AC_ARG_ENABLE(libtool-linkdep-fixup,
AS_HELP_STRING([--disable-libtool-linkdep-fixup],
AM_CONDITIONAL([CXX_WORKS], [test "x$rw_cv_prog_cxx_works" = "xyes"])
+# Check if the compiler support weak symbols
+AX_SYS_WEAK_ALIAS
+
+if test "x${ax_cv_sys_weak_alias}" = "xno"; then
+ AC_MSG_ERROR([Your platform doesn't support weak symbols.])
+fi
+
## Checks for libraries.
AC_CHECK_LIB([dl], [dlopen],
[
s390) NO_UNALIGNED_ACCESS=1 ;;
s390x) NO_UNALIGNED_ACCESS=1 ;;
arm*) NO_UNALIGNED_ACCESS=1 ;;
+ aarch64) NO_UNALIGNED_ACCESS=1 ;;
mips*) NO_UNALIGNED_ACCESS=1 ;;
tile*) NO_UNALIGNED_ACCESS=1 ;;
*) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;