print build info to log and on stdout

CMakeLists.txt

@@ -55,6 +55,12 @@ if(NOT CMAKE_BUILD_TYPE)
 endif(NOT CMAKE_BUILD_TYPE)
 set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE} CACHE STRING "")
 
+# Generate CMake to include build information
+configure_file(
+  ${CMAKE_SOURCE_DIR}/cmake/modules/SRSLTEbuildinfo.cmake.in
+  ${CMAKE_BINARY_DIR}/SRSLTEbuildinfo.cmake
+)
+
 ########################################################################
 # Options
 ########################################################################

cmake/modules/SRSLTEbuildinfo.cmake.in

@@ -0,0 +1,21 @@
+cmake_minimum_required(VERSION 2.6)
+
+execute_process(
+COMMAND git rev-parse --abbrev-ref HEAD
+WORKING_DIRECTORY "@CMAKE_SOURCE_DIR@"
+OUTPUT_VARIABLE GIT_BRANCH
+OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+execute_process(
+COMMAND git log -1 --format=%h
+WORKING_DIRECTORY "@CMAKE_SOURCE_DIR@"
+OUTPUT_VARIABLE GIT_COMMIT_HASH
+OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+message(STATUS "Generating build_info.h")
+configure_file(
+  @CMAKE_SOURCE_DIR@/lib/include/srslte/build_info.h.in
+  @CMAKE_BINARY_DIR@/lib/include/srslte/build_info.h
+)

lib/include/srslte/build_info.h.in

@@ -0,0 +1,56 @@
+/**
+ *
+ * \section COPYRIGHT
+ *
+ * Copyright 2013-2015 Software Radio Systems Limited
+ *
+ * \section LICENSE
+ *
+ * This file is part of the srsLTE library.
+ *
+ * srsLTE is free software: you can redistribute it and/or modify
+
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * srsLTE is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * A copy of the GNU Affero General Public License can be found in
+ * the LICENSE file in the top-level directory of this distribution
+ * and at http://www.gnu.org/licenses/.
+ *
+ */
+
+#ifndef BUILD_INFO_
+#define BUILD_INFO_
+
+# ifdef __cplusplus
+extern "C" {
+# endif
+
+#ifdef NDEBUG
+    static char build_mode[] = "Release";
+#else
+    static char build_mode[] = "Debug";
+#endif
+
+// the configured build options for srsLTE
+static char build_info[] = "commit @GIT_COMMIT_HASH@ on branch @GIT_BRANCH@";
+
+SRSLTE_API char* srslte_get_build_info() {
+  return build_info;
+};
+
+SRSLTE_API char* srslte_get_build_mode() {
+  return build_mode;
+}
+
+# ifdef __cplusplus
+}
+# endif
+
+#endif // BUILD_INFO_

lib/src/common/CMakeLists.txt

@@ -22,7 +22,9 @@ file(GLOB CXX_SOURCES "*.cc")
 file(GLOB C_SOURCES "*.c")
 
 add_library(srslte_common STATIC ${C_SOURCES} ${CXX_SOURCES})
+add_custom_target(gen_build_info COMMAND cmake -P ${CMAKE_BINARY_DIR}/SRSLTEbuildinfo.cmake)
+add_dependencies(srslte_common gen_build_info)
+
 target_include_directories(srslte_common PUBLIC ${SEC_INCLUDE_DIRS})
 target_link_libraries(srslte_common ${SEC_LIBRARIES})
 install(TARGETS srslte_common DESTINATION ${LIBRARY_DIR})
-

srsue/src/ue.cc

@@ -32,7 +32,9 @@
 #include <string>
 #include <algorithm>
 #include <iterator>
+#include <sstream>
 #include <ue_base.h>
+#include "srslte/build_info.h"
 
 using namespace srslte;
 
@@ -51,6 +53,10 @@ ue::~ue()
 
 bool ue::init(all_args_t *args_)
 {
+  std::stringstream ss;
+  ss << "Built in " << srslte_get_build_mode() << " mode using " << srslte_get_build_info() << "." << std::endl << std::endl;
+  std::cout << ss.str();
+
   args     = args_;
 
   if (!args->log.filename.compare("stdout")) {
@@ -58,6 +64,7 @@ bool ue::init(all_args_t *args_)
   } else {
     logger_file.init(args->log.filename);
     logger_file.log("\n\n");
+    logger_file.log(ss.str().c_str());
     logger = &logger_file;
   }