Add aarch64 support to configure

[lttng-ust.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 55cec234e19dffc3de64822608dc16d974f063e4..971cf54e9caf83a58babb52ae01e47325735ebc1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -48,6 +48,7 @@ AC_DEFINE_UNQUOTED([VERSION_NAME], ["$version_name"], [UST version name])
 AC_DEFINE_UNQUOTED([VERSION_DESCRIPTION], ["$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],
@@ -105,6 +106,13 @@ AC_CACHE_CHECK([whether the C++ compiler works],
 
 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${ax_cv_sys_weak_alias}" = "xno"; then
+   AC_MSG_ERROR([Your platform doesn't support weak symbols.])
+fi
+
 ## Checks for libraries.
 AC_CHECK_LIB([dl], [dlopen],
 [
@@ -230,6 +238,7 @@ changequote([,])dnl
        s390) NO_UNALIGNED_ACCESS=1 ;;
        s390x) NO_UNALIGNED_ACCESS=1 ;;
         arm*) NO_UNALIGNED_ACCESS=1 ;;
+       aarch64) NO_UNALIGNED_ACCESS=1 ;;
        mips*) NO_UNALIGNED_ACCESS=1 ;;
        tile*) NO_UNALIGNED_ACCESS=1 ;;
        *) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;