Soft transition from Gflags and Glog to Abseil. Some CI fixes

src/algorithms/signal_source/libs/CMakeLists.txt

@@ -74,11 +74,16 @@ target_link_libraries(signal_source_libs
         Boost::headers
         Gnuradio::runtime
     PRIVATE
-        Gflags::gflags
-        Glog::glog
         core_libs
 )
 
+if(ENABLE_GLOG_AND_GFLAGS)
+    target_link_libraries(signal_source_libs PRIVATE Gflags::gflags Glog::glog)
+    target_compile_definitions(signal_source_libs PRIVATE -DUSE_GLOG_AND_GFLAGS=1)
+else()
+    target_link_libraries(signal_source_libs PRIVATE absl::flags absl::log)
+endif()
+
 target_include_directories(signal_source_libs
     PUBLIC
         ${GNSSSDR_SOURCE_DIR}/src/core/receiver

src/algorithms/signal_source/libs/ad9361_manager.cc

@@ -16,7 +16,6 @@
  * -----------------------------------------------------------------------------
  */
 #include "ad9361_manager.h"
-#include <glog/logging.h>
 #include <ad9361.h>
 #include <cmath>
 #include <fstream>  // for ifstream
@@ -25,6 +24,12 @@
 #include <utility>
 #include <vector>
 
+#if USE_GLOG_AND_GFLAGS
+#include <glog/logging.h>
+#else
+#include <absl/log/log.h>
+#endif
+
 /* check return value of attr_write function */
 void errchk(int v, const char *what)
 {

src/algorithms/signal_source/libs/ad936x_iio_custom.cc

@@ -15,7 +15,6 @@
 #include "ad936x_iio_custom.h"
 #include <boost/filesystem.hpp>
 #include <boost/lexical_cast.hpp>
-#include <glog/logging.h>
 #include <chrono>
 #include <cmath>
 #include <fstream>
@@ -24,6 +23,12 @@
 #include <utility>
 #include <vector>
 
+#if USE_GLOG_AND_GFLAGS
+#include <glog/logging.h>
+#else
+#include <absl/log/log.h>
+#endif
+
 ad936x_iio_custom::ad936x_iio_custom(int debug_level_, int log_level_)
 {
     receive_samples = false;

src/algorithms/signal_source/libs/fpga_buffer_monitor.cc

@@ -25,7 +25,6 @@
 #include "fpga_buffer_monitor.h"
 #include "gnss_sdr_create_directory.h"
 #include "gnss_sdr_filesystem.h"
-#include <glog/logging.h>
 #include <ctime>       // for time, localtime
 #include <fcntl.h>     // for open, O_RDWR, O_SYNC
 #include <fstream>     // for string, ofstream
@@ -34,6 +33,12 @@
 #include <unistd.h>    // for close
 #include <utility>     // for move
 
+#if USE_GLOG_AND_GFLAGS
+#include <glog/logging.h>
+#else
+#include <absl/log/log.h>
+#endif
+
 
 Fpga_buffer_monitor::Fpga_buffer_monitor(const std::string &device_name,
     uint32_t num_freq_bands,

src/algorithms/signal_source/libs/fpga_dynamic_bit_selection.cc

@@ -21,12 +21,17 @@
 
 #include "fpga_dynamic_bit_selection.h"
 #include "uio_fpga.h"
-#include <glog/logging.h>
 #include <fcntl.h>     // for open, O_RDWR, O_SYNC
 #include <iostream>    // for cout
 #include <sys/mman.h>  // for mmap
 #include <unistd.h>    // for close
 
+#if USE_GLOG_AND_GFLAGS
+#include <glog/logging.h>
+#else
+#include <absl/log/log.h>
+#endif
+
 Fpga_dynamic_bit_selection::Fpga_dynamic_bit_selection(bool enable_rx1_band, bool enable_rx2_band)
     : d_map_base_freq_band_1(nullptr),
       d_map_base_freq_band_2(nullptr),

src/algorithms/signal_source/libs/fpga_switch.cc

@@ -21,12 +21,17 @@
  */
 
 #include "fpga_switch.h"
-#include <glog/logging.h>
 #include <fcntl.h>     // for open, O_RDWR, O_SYNC
 #include <iostream>    // for cout
 #include <sys/mman.h>  // for mmap
 #include <unistd.h>    // for close
 
+#if USE_GLOG_AND_GFLAGS
+#include <glog/logging.h>
+#else
+#include <absl/log/log.h>
+#endif
+
 Fpga_Switch::Fpga_Switch(const std::string &device_name)
 {
     if ((d_device_descriptor = open(device_name.c_str(), O_RDWR | O_SYNC)) == -1)

src/algorithms/signal_source/libs/gnss_sdr_valve.cc

@@ -19,11 +19,16 @@
 
 #include "gnss_sdr_valve.h"
 #include "command_event.h"
-#include <glog/logging.h>           // for LOG
 #include <gnuradio/io_signature.h>  // for io_signature
 #include <algorithm>                // for min
 #include <cstring>                  // for memcpy
 
+#if USE_GLOG_AND_GFLAGS
+#include <glog/logging.h>
+#else
+#include <absl/log/log.h>
+#endif
+
 Gnss_Sdr_Valve::Gnss_Sdr_Valve(size_t sizeof_stream_item,
     uint64_t nitems,
     Concurrent_Queue<pmt::pmt_t>* queue,