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-rw-r--r--erts/configure.in15
1 files changed, 9 insertions, 6 deletions
diff --git a/erts/configure.in b/erts/configure.in
index fac07f8b6a..d4298caf11 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -1673,6 +1673,15 @@ esac
AC_C_BIGENDIAN
+dnl fdatasync syscall (Unix only)
+AC_CHECK_FUNCS([fdatasync])
+
+dnl Find which C libraries are required to use fdatasync
+dnl TODO: Remove check once SunOS >= 5.11 is required by erts.
+dnl fdatasync requires linking against -lrt on SunOS <= 5.10.
+dnl OpenSolaris 2009.06 is SunOS 5.11 and does not require -lrt.
+AC_SEARCH_LIBS(fdatasync, [rt])
+
dnl ----------------------------------------------------------------------
dnl Checks for library functions.
dnl ----------------------------------------------------------------------
@@ -1860,12 +1869,6 @@ fi
dnl Need by run_erl.
AC_CHECK_FUNCS([openpty])
-dnl fdatasync syscall (Unix only)
-AC_CHECK_FUNCS([fdatasync])
-
-dnl Find which C libraries are required to use fdatasync
-AC_SEARCH_LIBS(fdatasync, [rt])
-
AC_CHECK_HEADERS(net/if_dl.h ifaddrs.h netpacket/packet.h)
AC_CHECK_FUNCS([getifaddrs])