From 1d972ec63827bd1188aaa5df778b5cb6956a5843 Mon Sep 17 00:00:00 2001
From: Bastian Bloessl <bloessl@ccs-labs.org>
Date: Tue, 30 Jun 2015 21:08:33 +0200
Subject: [PATCH] backwards compatible api

---
 lib/CMakeLists.txt              | 19 +++++++++++++++++++
 lib/wireshark_connector_impl.cc |  4 ++++
 2 files changed, 23 insertions(+)

diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 5425311..deb5a00 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -41,6 +41,25 @@ list(APPEND foo_sources
     rtt_measure_impl.cc
 )
 
+set(PACKAGE_FIND_VERSION_MAJOR 0)
+include(GnuradioConfigVersion)
+
+if(${API_COMPAT} EQUAL 8)
+    message(STATUS "next branch (3.8 install), using new API")
+    add_definitions("-DGR_FOO_NEW_API")
+elseif(${MINOR_VERSION} GREATER 7)
+    message(STATUS "recent 3.7.8 install, using new API")
+    add_definitions("-DGR_FOO_NEW_API")
+elseif(${MINOR_VERSION} EQUAL 7 AND NOT ${MAINT_VERSION} STREQUAL "git")
+    message(STATUS "recent real 3.7.7 install, using new API")
+    add_definitions("-DGR_FOO_NEW_API")
+elseif(${MINOR_VERSION} EQUAL 6 AND NOT ${MAINT_VERSION} STREQUAL "git" AND ${MAINT_VERSION} GREATER 0)
+    message(STATUS "3.7.6 with maint version >= 1 install, using new API")
+    add_definitions("-DGR_FOO_NEW_API")
+else()
+    message(STATUS "using old API")
+endif()
+
 add_library(gnuradio-foo SHARED ${foo_sources})
 target_link_libraries(gnuradio-foo ${Boost_LIBRARIES} ${GNURADIO_RUNTIME_LIBRARIES} ${GNURADIO_PMT_LIBRARIES} ${UHD_LIBRARIES})
 set_target_properties(gnuradio-foo PROPERTIES DEFINE_SYMBOL "gnuradio_foo_EXPORTS")
diff --git a/lib/wireshark_connector_impl.cc b/lib/wireshark_connector_impl.cc
index 0901d99..adb0df3 100644
--- a/lib/wireshark_connector_impl.cc
+++ b/lib/wireshark_connector_impl.cc
@@ -162,7 +162,11 @@ wireshark_connector_impl::general_work(int noutput, gr_vector_int& ninput_items,
 	gr_complex *out = (gr_complex*)output_items[0];
 
 	if(!d_msg_len) {
+#ifdef GR_FOO_NEW_API
 		pmt::pmt_t msg(delete_head_blocking(pmt::mp("in"), 100));
+#else
+		pmt::pmt_t msg(delete_head_blocking(pmt::mp("in")));
+#endif
 
 		if(!msg) {
 			return 0;