configure.ac: add AC_LIBTOOL_WIN32_DLL to allow cross compilation of shared libs

diff --git a/configure.ac b/configure.ac
index b1567f1..204ae38 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -81,6 +81,8 @@ AC_ARG_ENABLE(lcov,
 dnl Check for libtool
 AC_LIBTOOL_DLOPEN
 dnl AC_DISABLE_STATIC
+dnl allow cross compiling
+AC_LIBTOOL_WIN32_DLL
 AC_PROG_LIBTOOL
 
 AC_CONFIG_HEADERS(src/config.h)