Improve portability

In some architectures (e.g. alpha, hppa, powerpcspe, m68k,  sh4, sparc64, x32) the package gr-osmosdr is not available. So when the package is build with -DENABLE_OSMOSDR=ON, it breaks on the mentioned architectures. This is expected behaviour (it breaks because a required dependency is not found), but prevents from building the package on such architectures. This commit introduces a small change: when compilation is called with

cmake -DENABLE_OSMOSDR=ON -DENABLE_PACKAGING=ON ..

then, the compilation does not break if gr-osmosdr is not found.

This commit also fixes building when UHD is present but gnuradio-uhd is not (for instance, in hurd-i386)

CMakeLists.txt

@@ -1167,8 +1167,17 @@ if($ENV{RTLSDR_DRIVER})
 endif($ENV{RTLSDR_DRIVER})
 
 if(ENABLE_OSMOSDR)
+    find_package(GrOsmoSDR)
+    if(GROSMOSDR_FOUND)
         message(STATUS "The driver for OsmoSDR and other front-ends (HackRF, bladeRF, Realtek's RTL2832U-based dongles, etc.) will be compiled." )
         message(STATUS "You can disable it with 'cmake -DENABLE_OSMOSDR=OFF ../'" )
+    else(GROSMOSDR_FOUND)
+        if(ENABLE_PACKAGING)
+           message(WARNING "gr-osmosdr has not been found. Source blocks depending on it will NOT be built.")
+        else(ENABLE_PACKAGING)
+           message(FATAL_ERROR "gr-osmosdr required to build gnss-sdr with the optional OSMOSDR driver")
+        endif(ENABLE_PACKAGING)
+    endif(GROSMOSDR_FOUND)
 else(ENABLE_OSMOSDR)
     message(STATUS "The (optional) driver for OsmoSDR and related front-ends is not enabled." )
     message(STATUS "Enable it with 'cmake -DENABLE_OSMOSDR=ON ../' to add support for OsmoSDR and other front-ends (HackRF, bladeRF, Realtek's RTL2832U-based USB dongles, etc.)" )

src/algorithms/signal_source/adapters/CMakeLists.txt

@@ -16,6 +16,9 @@
 # along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
 #
 
+file(GLOB SIGNAL_SOURCE_ADAPTER_HEADERS "*.h")
+list(SORT SIGNAL_SOURCE_ADAPTER_HEADERS)
+
 # Optional drivers
 
 if(ENABLE_GN3S)
@@ -72,11 +75,11 @@ if(ENABLE_OSMOSDR)
     ################################################################################
     # OsmoSDR - http://sdr.osmocom.org/trac/
     ################################################################################
-    find_package(GrOsmoSDR REQUIRED)
     if(NOT GROSMOSDR_FOUND)
-        message(FATAL_ERROR "gr-osmosdr required to build gnss-sdr with the optional OSMOSDR driver")
-    endif(NOT GROSMOSDR_FOUND)
-
+        if(ENABLE_PACKAGING)
+            list(REMOVE_ITEM SIGNAL_SOURCE_ADAPTER_HEADERS ${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/adapters/osmosdr_signal_source.h)
+        endif(ENABLE_PACKAGING)
+    else(NOT GROSMOSDR_FOUND)
         # set OSMO include dirs
         set(OSMO_DRIVER_INCLUDE_DIRS
             ${OPT_DRIVER_INCLUDE_DIRS}
@@ -85,13 +88,16 @@ if(ENABLE_OSMOSDR)
         set(OPT_DRIVER_SOURCES ${OPT_DRIVER_SOURCES} osmosdr_signal_source.cc)
         set(OPT_LIBRARIES ${OPT_LIBRARIES} ${GROSMOSDR_LIBRARIES})
         set(OPT_DRIVER_INCLUDE_DIRS ${OPT_DRIVER_INCLUDE_DIRS} ${OSMO_DRIVER_INCLUDE_DIRS})
+    endif(NOT GROSMOSDR_FOUND)
 endif(ENABLE_OSMOSDR)
 
-if(ENABLE_UHD)
+if(ENABLE_UHD AND GNURADIO_UHD_LIBRARIES_gnuradio-uhd)
     set(OPT_DRIVER_SOURCES ${OPT_DRIVER_SOURCES} uhd_signal_source.cc)
     set(OPT_LIBRARIES ${OPT_LIBRARIES} ${UHD_LIBRARIES} ${GNURADIO_UHD_LIBRARIES})
     set(OPT_DRIVER_INCLUDE_DIRS ${OPT_DRIVER_INCLUDE_DIRS} ${UHD_INCLUDE_DIRS})
-endif(ENABLE_UHD)
+else(ENABLE_UHD AND GNURADIO_UHD_LIBRARIES_gnuradio-uhd)
+    list(REMOVE_ITEM SIGNAL_SOURCE_ADAPTER_HEADERS ${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/adapters/uhd_signal_source.h)
+endif(ENABLE_UHD AND GNURADIO_UHD_LIBRARIES_gnuradio-uhd)
 
 
 set(SIGNAL_SOURCE_ADAPTER_SOURCES file_signal_source.cc
@@ -129,8 +135,6 @@ endif(ARCH_64BITS)
 
 add_definitions(-DGNSSSDR_INSTALL_DIR="${CMAKE_INSTALL_PREFIX}")
 
-file(GLOB SIGNAL_SOURCE_ADAPTER_HEADERS "*.h")
-list(SORT SIGNAL_SOURCE_ADAPTER_HEADERS)
 add_library(signal_source_adapters ${SIGNAL_SOURCE_ADAPTER_SOURCES} ${SIGNAL_SOURCE_ADAPTER_HEADERS})
 source_group(Headers FILES ${SIGNAL_SOURCE_ADAPTER_HEADERS})
 target_link_libraries(signal_source_adapters signal_source_gr_blocks
@@ -140,4 +144,3 @@ target_link_libraries(signal_source_adapters signal_source_gr_blocks
                                              ${OPT_LIBRARIES}
                                              gnss_sp_libs
 )
-

src/core/receiver/CMakeLists.txt

@@ -101,12 +101,14 @@ if(ENABLE_FLEXIBAND)
 endif(ENABLE_FLEXIBAND)
 
 if(ENABLE_OSMOSDR)
+    if(GROSMOSDR_FOUND)
         add_definitions(-DOSMOSDR_DRIVER=1)
+    endif(GROSMOSDR_FOUND)
 endif(ENABLE_OSMOSDR)
 
-if(ENABLE_UHD)
+if(ENABLE_UHD AND GNURADIO_UHD_LIBRARIES_gnuradio-uhd)
     add_definitions(-DUHD_DRIVER=1)
-endif(ENABLE_UHD)
+endif(ENABLE_UHD AND GNURADIO_UHD_LIBRARIES_gnuradio-uhd)
 
 #Enable OpenCL if found in the system
 if(OPENCL_FOUND)

src/main/CMakeLists.txt

@@ -28,10 +28,10 @@ if(ENABLE_GPERFTOOLS)
     endif(GPERFTOOLS_FOUND)
 endif(ENABLE_GPERFTOOLS)
 
-if(ENABLE_UHD)
+if(ENABLE_UHD AND GNURADIO_UHD_LIBRARIES_gnuradio-uhd)
     set(GNSS_SDR_OPTIONAL_LIBS ${GNSS_SDR_OPTIONAL_LIBS} ${UHD_LIBRARIES} ${GNURADIO_UHD_LIBRARIES})
     set(GNSS_SDR_OPTIONAL_HEADERS ${GNSS_SDR_OPTIONAL_HEADERS} ${UHD_INCLUDE_DIRS})
-endif(ENABLE_UHD)
+endif(ENABLE_UHD AND GNURADIO_UHD_LIBRARIES_gnuradio-uhd)
 
 if(OPENSSL_FOUND)
     add_definitions( -DUSE_OPENSSL_FALLBACK=1 )