Remove usage of uninitialized variables in CMake scripts

Remove all warnings emitted by cmake --warn-uninitialized ..

src/algorithms/acquisition/libs/CMakeLists.txt

@@ -7,13 +7,13 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
-if(ENABLE_FPGA)
-    set(ACQUISITION_LIB_SOURCES fpga_acquisition.cc)
-    set(ACQUISITION_LIB_HEADERS fpga_acquisition.h)
-endif()
+set(ACQUISITION_LIB_HEADERS acq_conf.h)
+set(ACQUISITION_LIB_SOURCES acq_conf.cc)
 
-set(ACQUISITION_LIB_HEADERS ${ACQUISITION_LIB_HEADERS} acq_conf.h)
-set(ACQUISITION_LIB_SOURCES ${ACQUISITION_LIB_SOURCES} acq_conf.cc)
+if(ENABLE_FPGA)
+    set(ACQUISITION_LIB_SOURCES ${ACQUISITION_LIB_SOURCES} fpga_acquisition.cc)
+    set(ACQUISITION_LIB_HEADERS ${ACQUISITION_LIB_HEADERS} fpga_acquisition.h)
+endif()
 
 list(SORT ACQUISITION_LIB_HEADERS)
 list(SORT ACQUISITION_LIB_SOURCES)

src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/CMakeLists.txt

@@ -12,6 +12,9 @@
 # Project setup
 ########################################################################
 cmake_minimum_required(VERSION 2.8.12)
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE "Release")
+endif()
 set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE} CACHE STRING "Choose build type: None Debug Release RelWithDebInfo MinSizeRel")
 project(volk_gnsssdr)
 enable_language(CXX)
@@ -74,6 +77,7 @@ else()
     find_package(FILESYSTEM COMPONENTS Final Experimental)
 endif()
 
+set(MY_CXX_FLAGS "")
 if((CMAKE_CXX_COMPILER_ID STREQUAL "GNU") AND NOT WIN32)
     if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "6.1.1")
         if(CMAKE_VERSION VERSION_LESS "3.1")
@@ -310,6 +314,9 @@ endif()
 # Setup the package config file
 ########################################################################
 # set variables found in the pc.in file
+if(NOT LIB_SUFFIX)
+    set(LIB_SUFFIX "")
+endif()
 set(prefix ${CMAKE_INSTALL_PREFIX})
 set(exec_prefix "\${prefix}")
 set(libdir "\${exec_prefix}/lib${LIB_SUFFIX}")

src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cmake/Modules/FindFILESYSTEM.cmake

@@ -117,7 +117,9 @@ include(CheckCXXSourceCompiles)
 
 cmake_push_check_state()
 
-set(CMAKE_REQUIRED_QUIET ${FILESYSTEM_FIND_QUIETLY})
+if(FILESYSTEM_FIND_QUIETLY)
+    set(CMAKE_REQUIRED_QUIET ${FILESYSTEM_FIND_QUIETLY})
+endif()
 
 # All of our tests require C++17 or later
 set(CMAKE_CXX_STANDARD 17)

src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cmake/Modules/FindORC.cmake

@@ -11,30 +11,51 @@ set(PKG_CONFIG_USE_CMAKE_PREFIX_PATH TRUE)
 include(FindPkgConfig)
 pkg_check_modules(PC_ORC "orc-0.4 > 0.4.22")
 
+if(NOT ORC_ROOT)
+    set(ORC_ROOT_USER_PROVIDED /usr/local)
+else()
+    set(ORC_ROOT_USER_PROVIDED ${ORC_ROOT})
+endif()
+if(DEFINED ENV{ORC_ROOT})
+    set(ORC_ROOT_USER_PROVIDED
+        ${ORC_ROOT_USER_PROVIDED}
+        $ENV{ORC_ROOT}
+    )
+endif()
+set(ORC_ROOT_USER_PROVIDED
+    ${ORC_ROOT_USER_PROVIDED}
+    ${CMAKE_INSTALL_PREFIX}
+)
+if(PC_ORC_TOOLSDIR)
+    set(ORC_ROOT_USER_PROVIDED
+        ${ORC_ROOT_USER_PROVIDED}
+        ${PC_ORC_TOOLSDIR}
+    )
+endif()
+
 find_program(ORCC_EXECUTABLE orcc
-    HINTS ${PC_ORC_TOOLSDIR}
+    HINTS ${ORC_ROOT_USER_PROVIDED}/bin
     PATHS /usr/bin
           /usr/local/bin
           /opt/local/bin
-          ${ORC_ROOT}/bin
-          ${CMAKE_INSTALL_PREFIX}/bin
 )
 
 find_path(ORC_INCLUDE_DIR
     NAMES orc/orc.h
     HINTS ${PC_ORC_INCLUDEDIR}
-    PATHS /usr/include
+    PATHS ${ORC_ROOT_USER_PROVIDED}/include
+          /usr/include
           /usr/local/include
           /opt/local/include
-          ${ORC_ROOT}/include
-          ${CMAKE_INSTALL_PREFIX}/include
     PATH_SUFFIXES orc-0.4
 )
 
 find_path(ORC_LIBRARY_DIR
     NAMES ${CMAKE_SHARED_LIBRARY_PREFIX}orc-0.4${CMAKE_SHARED_LIBRARY_SUFFIX}
     HINTS ${PC_ORC_LIBDIR}
-    PATHS /usr/lib
+    PATHS ${ORC_ROOT_USER_PROVIDED}/lib
+          ${ORC_ROOT_USER_PROVIDED}/lib64
+          /usr/lib
           /usr/lib64
           /usr/lib/x86_64-linux-gnu
           /usr/lib/i386-linux-gnu
@@ -52,22 +73,19 @@ find_path(ORC_LIBRARY_DIR
           /usr/local/lib
           /usr/local/lib64
           /opt/local/lib
-          ${ORC_ROOT}/lib
-          $ENV{ORC_ROOT}/lib
-          ${ORC_ROOT}/lib${LIB_SUFFIX}
-          ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}
 )
 
 find_library(ORC_LIB orc-0.4
     HINTS ${PC_ORC_LIBRARY_DIRS}
-    PATHS ${ORC_ROOT}/lib${LIB_SUFFIX}
-          ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX}
+    PATHS ${ORC_ROOT_USER_PROVIDED}/lib
+          ${ORC_ROOT_USER_PROVIDED}/lib64
 )
 
-list(APPEND ORC_LIBRARY
-    ${ORC_LIB}
-)
+if(PC_ORC_VERSION)
+    set(ORC_VERSION ${PC_ORC_VERSION})
+endif()
 
+list(APPEND ORC_LIBRARY ${ORC_LIB})
 
 set(ORC_INCLUDE_DIRS ${ORC_INCLUDE_DIR})
 set(ORC_LIBRARIES ${ORC_LIBRARY})

src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/cmake/Modules/VolkAddTest.cmake

@@ -145,6 +145,9 @@ function(VOLK_ADD_TEST test_name executable_name)
     string(REPLACE ";" " " VOLK_TEST_ARGS "${VOLK_TEST_ARGS}")
 
     #finally: append the test name to execute
+    if(NOT CMAKE_CROSSCOMPILING_EMULATOR)
+        set(CMAKE_CROSSCOMPILING_EMULATOR "")
+    endif()
     file(APPEND ${sh_file} "${CMAKE_CROSSCOMPILING_EMULATOR} ${executable_name} ${VOLK_TEST_ARGS}\n")
 
     #make the shell file executable

src/algorithms/libs/volk_gnsssdr_module/volk_gnsssdr/lib/CMakeLists.txt

@@ -79,6 +79,9 @@ endif()
 ########################################################################
 # determine passing architectures based on compile flag tests
 ########################################################################
+if(NOT PYTHON_DASH_B)
+    set(PYTHON_DASH_B "")
+endif()
 execute_process(
     COMMAND ${PYTHON_EXECUTABLE} ${PYTHON_DASH_B}
     ${PROJECT_SOURCE_DIR}/gen/volk_gnsssdr_compile_utils.py
@@ -405,6 +408,9 @@ else()
         OUTPUT_VARIABLE cmake_c_compiler_version
     )
 endif()
+if(NOT GRCBTU)
+    set(GRCBTU "")
+endif()
 set(COMPILER_INFO "${CMAKE_C_COMPILER}:::${CMAKE_C_FLAGS_${GRCBTU}} ${CMAKE_C_FLAGS}\n${CMAKE_CXX_COMPILER}:::${CMAKE_CXX_FLAGS_${GRCBTU}} ${CMAKE_CXX_FLAGS}\n")
 
 foreach(machine_name ${available_machines})

src/algorithms/observables/libs/CMakeLists.txt

@@ -7,17 +7,11 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
-set(OBSERVABLES_LIB_HEADERS ${OBSERVABLES_LIB_HEADERS} obs_conf.h)
-set(OBSERVABLES_LIB_SOURCES ${OBSERVABLES_LIB_SOURCES} obs_conf.cc)
-
-list(SORT OBSERVABLES_LIB_HEADERS)
-list(SORT OBSERVABLES_LIB_SOURCES)
-
-source_group(Headers FILES ${OBSERVABLES_LIB_HEADERS})
+source_group(Headers FILES obs_conf.h)
 
 add_library(observables_libs
-    ${OBSERVABLES_LIB_SOURCES}
-    ${OBSERVABLES_LIB_HEADERS}
+    obs_conf.cc
+    obs_conf.h
 )
 
 target_link_libraries(observables_libs

src/algorithms/signal_source/adapters/CMakeLists.txt

@@ -9,6 +9,8 @@
 
 
 # Optional drivers
+set(OPT_DRIVER_SOURCES "")
+set(OPT_DRIVER_HEADERS "")
 
 if(ENABLE_RAW_UDP AND PCAP_FOUND)
     set(OPT_DRIVER_SOURCES ${OPT_DRIVER_SOURCES} custom_udp_signal_source.cc)

src/algorithms/signal_source/gnuradio_blocks/CMakeLists.txt

@@ -7,10 +7,11 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
-
+set(OPT_DRIVER_SOURCES "")
+set(OPT_DRIVER_HEADERS "")
 if(ENABLE_RAW_UDP AND PCAP_FOUND)
-    set(OPT_DRIVER_SOURCES ${OPT_DRIVER_SOURCES} gr_complex_ip_packet_source.cc)
-    set(OPT_DRIVER_HEADERS ${OPT_DRIVER_HEADERS} gr_complex_ip_packet_source.h)
+    set(OPT_DRIVER_SOURCES gr_complex_ip_packet_source.cc)
+    set(OPT_DRIVER_HEADERS gr_complex_ip_packet_source.h)
 endif()
 
 

src/algorithms/signal_source/libs/CMakeLists.txt

@@ -7,7 +7,8 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
-
+set(OPT_SIGNAL_SOURCE_LIB_SOURCES "")
+set(OPT_SIGNAL_SOURCE_LIB_HEADERS "")
 if(ENABLE_FMCOMMS2 OR ENABLE_AD9361)
     set(OPT_SIGNAL_SOURCE_LIB_SOURCES ad9361_manager.cc)
     set(OPT_SIGNAL_SOURCE_LIB_HEADERS ad9361_manager.h)

src/algorithms/tracking/adapters/CMakeLists.txt

@@ -7,14 +7,13 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
-
+set(OPT_TRACKING_ADAPTERS_SOURCES "")
+set(OPT_TRACKING_ADAPTERS_HEADERS "")
 if(ENABLE_CUDA)
     set(OPT_TRACKING_ADAPTERS_SOURCES
-        ${OPT_TRACKING_ADAPTERS_SOURCES}
         gps_l1_ca_dll_pll_tracking_gpu.cc
     )
     set(OPT_TRACKING_ADAPTERS_HEADERS
-        ${OPT_TRACKING_ADAPTERS_HEADERS}
         gps_l1_ca_dll_pll_tracking_gpu.h
     )
 endif()

src/algorithms/tracking/gnuradio_blocks/CMakeLists.txt

@@ -7,13 +7,14 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 #
 
+set(OPT_TRACKING_BLOCKS_SOURCES "")
+set(OPT_TRACKING_BLOCKS_HEADERS "")
+
 if(ENABLE_CUDA)
     set(OPT_TRACKING_BLOCKS_SOURCES
-        ${OPT_TRACKING_BLOCKS_SOURCES}
         gps_l1_ca_dll_pll_tracking_gpu_cc.cc
     )
     set(OPT_TRACKING_BLOCKS_HEADERS
-        ${OPT_TRACKING_BLOCKS_HEADERS}
         gps_l1_ca_dll_pll_tracking_gpu_cc.h
     )
 endif()

src/algorithms/tracking/libs/CMakeLists.txt

@@ -42,7 +42,8 @@ set(TRACKING_LIB_HEADERS
     exponential_smoother.h
 )
 
-
+set(OPT_TRACKING_LIBRARIES "")
+set(OPT_TRACKING_INCLUDES "")
 if(ENABLE_CUDA)
     if(CMAKE_VERSION VERSION_GREATER 3.11)
         set(TRACKING_LIB_SOURCES ${TRACKING_LIB_SOURCES} cuda_multicorrelator.cu)