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-rw-r--r--build-aux/m4/l_socket.m436
1 files changed, 36 insertions, 0 deletions
diff --git a/build-aux/m4/l_socket.m4 b/build-aux/m4/l_socket.m4
new file mode 100644
index 0000000000..38923a98fc
--- /dev/null
+++ b/build-aux/m4/l_socket.m4
@@ -0,0 +1,36 @@
+# Illumos/SmartOS requires linking with -lsocket if
+# using getifaddrs & freeifaddrs
+
+m4_define([_CHECK_SOCKET_testbody], [[
+ #include <sys/types.h>
+ #include <ifaddrs.h>
+
+ int main() {
+ struct ifaddrs *ifaddr;
+ getifaddrs(&ifaddr);
+ freeifaddrs(ifaddr);
+ }
+]])
+
+AC_DEFUN([CHECK_SOCKET], [
+
+ AC_LANG_PUSH(C++)
+
+ AC_MSG_CHECKING([whether ifaddrs funcs can be used without link library])
+
+ AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_SOCKET_testbody])],[
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_MSG_RESULT([no])
+ LIBS="$LIBS -lsocket"
+ AC_MSG_CHECKING([whether getifaddrs needs -lsocket])
+ AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_SOCKET_testbody])],[
+ AC_MSG_RESULT([yes])
+ ],[
+ AC_MSG_RESULT([no])
+ AC_MSG_FAILURE([cannot figure out how to use getifaddrs])
+ ])
+ ])
+
+ AC_LANG_POP
+])