m4: merge TangentOrg/ddm4

[awesomized/libmemcached] / m4 / ax_dlopen.m4

diff --git a/m4/ax_dlopen.m4 b/m4/ax_dlopen.m4
new file mode 100644 (file)
index 0000000..514c578
--- /dev/null
+++ b/m4/ax_dlopen.m4
@@ -0,0 +1,10 @@
+#serial 2
+
+AC_DEFUN([AX_DLOPEN],
+    [AS_IF([test "x$enable_shared" = xyes],
+      [AX_CHECK_LIBRARY([DL],[dlfcn.h],[dl],
+        [AC_DEFINE([HAVE_LIBDL],[1],[Have dlopen])
+        AC_CHECK_LIB([dl],[dlopen],[AC_DEFINE([HAVE_DLOPEN],[1],[Have dlopen])])
+        AC_CHECK_LIB([dl],[dladdr],[AC_DEFINE([HAVE_DLADDR],[1],[Have dladdr])])])])
+    ])
+