From f73862b500a3a8b21cf8865418fb3f42d18b183c Mon Sep 17 00:00:00 2001
From: Bastian Bloessl <bloessl@ccs-labs.org>
Date: Fri, 16 Dec 2016 09:37:52 +0100
Subject: [PATCH] add UHD compile switches

---
 CMakeLists.txt         | 8 +++++++-
 lib/packet_pad2.cc     | 4 ++++
 lib/packet_pad_impl.cc | 4 ++++
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b43f4eb..8caa947 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,7 +45,13 @@ endif()
 
 find_package(UHD)
 if(NOT UHD_FOUND)
-    message(FATAL_ERROR "UHD library not found.")
+    message(STATUS "UHD library not found, no support for timed TX.")
+    set(UHD_INCLUDE_DIRS "")
+    set(UHD_LIBRARY_DIRS "")
+    set(UHD_LIBRARIES "")
+else()
+    message(STATUS "UHD library found.")
+    add_definitions(-DFOO_UHD)
 endif()
 
 ########################################################################
diff --git a/lib/packet_pad2.cc b/lib/packet_pad2.cc
index c2887b0..4d3fd2e 100644
--- a/lib/packet_pad2.cc
+++ b/lib/packet_pad2.cc
@@ -18,7 +18,9 @@
 
 #include <gnuradio/io_signature.h>
 #include <sys/time.h>
+#ifdef FOO_UHD
 #include <uhd/types/time_spec.hpp>
+#endif
 
 using namespace gr::foo;
 
@@ -60,6 +62,7 @@ int work (int noutput_items, gr_vector_int& ninput_items,
 	int produced = ninput_items[0] + d_pad_front + d_pad_tail;
 	const pmt::pmt_t src = pmt::string_to_symbol(alias());
 
+	#ifdef FOO_UHD
 	if(d_delay) {
 		static const pmt::pmt_t time_key = pmt::string_to_symbol("tx_time");
 		struct timeval t;
@@ -73,6 +76,7 @@ int work (int noutput_items, gr_vector_int& ninput_items,
 		);
 		add_item_tag(0, nitems_written(0), time_key, time_value, src);
 	}
+	#endif
 
 	std::vector<gr::tag_t> tags;
 	get_tags_in_range(tags, 0, nitems_read(0), nitems_read(0) + ninput_items[0]);
diff --git a/lib/packet_pad_impl.cc b/lib/packet_pad_impl.cc
index c0fc3c4..f26b426 100644
--- a/lib/packet_pad_impl.cc
+++ b/lib/packet_pad_impl.cc
@@ -19,7 +19,9 @@
 #include <gnuradio/io_signature.h>
 #include <iostream>
 #include <sys/time.h>
+#ifdef FOO_UHD
 #include <uhd/types/time_spec.hpp>
+#endif
 
 using namespace gr::foo;
 
@@ -53,6 +55,7 @@ packet_pad_impl::add_sob(uint64_t item) {
 	static const pmt::pmt_t srcid = pmt::string_to_symbol(alias());
 	add_item_tag(0, item, sob_key, value, srcid);
 
+	#ifdef FOO_UHD
 	if(d_delay) {
 		static const pmt::pmt_t time_key = pmt::string_to_symbol("tx_time");
 		struct timeval t;
@@ -66,6 +69,7 @@ packet_pad_impl::add_sob(uint64_t item) {
 		);
 		add_item_tag(0, item, time_key, time_value, srcid);
 	}
+	#endif
 }
 
 void