X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=configure.ac;h=16509b57c37658b5842e8c3611b36dc915ce4813;hb=0ea8bd08bf5d56e2a173dac1f2fe58afd26a5109;hp=55cec234e19dffc3de64822608dc16d974f063e4;hpb=c3e14096db731a8624b55fb91a231e7a97a5e7cd;p=lttng-ust.git

diff --git a/configure.ac b/configure.ac
index 55cec234..16509b57 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_INIT([lttng-ust],[2.6.0-rc1],[mathieu dot desnoyers at efficios dot com])
+AC_INIT([lttng-ust],[2.7.0-pre],[mathieu dot desnoyers at efficios dot com])
 
 # Following the numbering scheme proposed by libtool for the library version
 # http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
@@ -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${ax_cv_sys_weak_alias}" = "xno"; then
+   AC_MSG_ERROR([Your platform doesn't support weak symbols.])
+fi
+
 ## Checks for libraries.
 AC_CHECK_LIB([dl], [dlopen],
 [
@@ -230,9 +238,13 @@ changequote([,])dnl
 	s390) NO_UNALIGNED_ACCESS=1 ;;
 	s390x) NO_UNALIGNED_ACCESS=1 ;;
         arm*) NO_UNALIGNED_ACCESS=1 ;;
+	aarch64) NO_UNALIGNED_ACCESS=1 ;;
 	mips*) NO_UNALIGNED_ACCESS=1 ;;
 	tile*) NO_UNALIGNED_ACCESS=1 ;;
-	*) AC_MSG_ERROR([unable to detect alignment requirements (unsupported architecture ($host_cpu)?)]) ;;
+	*)
+		UNSUPPORTED_ARCH=1
+		NO_UNALIGNED_ACCESS=1
+		;;
 esac
 AC_MSG_RESULT([$host_cpu])
 
@@ -413,6 +425,11 @@ AS_IF([test "x$python_agent" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled
 AS_ECHO_N("sdt.h integration:  ")
 AS_IF([test "x$with_sdt" = "xyes"], [AS_ECHO("Enabled")], [AS_ECHO("Disabled")])
 
+AS_ECHO("Architecture: $host_cpu")
+AS_ECHO_N("Efficient unaligned memory access: ")
+AS_IF([test "x$NO_UNALIGNED_ACCESS" != "x1"], [AS_ECHO("yes")], [AS_IF([test "x$UNSUPPORTED_ARCH" != "x1"], [AS_ECHO("no")], [AS_ECHO("unknown")])])
+AS_IF([test "x$UNSUPPORTED_ARCH" = "x1"], [AC_MSG_WARN([Your architecture ($host_cpu) is unsupported, using safe default of no unaligned access])])
 AS_ECHO()
+
 AS_ECHO("Type 'make' to compile.")