Merge 3fabeb6a52 into 6050aa155d

This patch adds `j1939-vehicle-position-srv`, a server for sending
vehicle position data over CAN using J1939 or NMEA 2000 protocols. It
retrieves GPS data from gpsd or simulates data if gpsd is unavailable.
By default, it operates in J1939 profile but can switch to NMEA 2000
with the `-p nmea2000` option.

Usage Examples:
1. With gpsd:
   j1939acd -r 64-95 -c /tmp/1122334455667789.jacd 1122334455667789 vcan0 &
   j1939-vehicle-position-srv -i vcan0 -n 0x1122334455667789

2. In simulation mode without gpsd:
   j1939-vehicle-position-srv -i vcan0 -s -p nmea2000

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
[Yegor: add CMakeLists.txt integration]
Co-developed-by: Yegor Yefremov <yegorslists@googlemail.com>

.github/workflows/compile.yml

@@ -50,21 +50,21 @@ jobs:
       env:
         cc: gcc
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=${cc} -DENABLE_WERROR=ON -B build-${cc}
+        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=${cc} -DENABLE_WERROR=ON -DENABLE_GPS=ON -B build-${cc}
         podman exec -i stable cmake --build build-${cc}
 
     - name: Configure & Build with clang
       env:
         cc: clang
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=${cc} -DENABLE_WERROR=ON -B build-${cc}
+        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=${cc} -DENABLE_WERROR=ON -DENABLE_GPS=ON -B build-${cc}
         podman exec -i stable cmake --build build-${cc}
 
     - name: Configure & Build with arm-linux-gnueabihf-gcc
       env:
         toolchain: arm-linux-gnueabihf-gcc
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -B build-${toolchain}
+        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -DENABLE_GPS=ON -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with arm-linux-gnueabihf-clang
@@ -73,14 +73,14 @@ jobs:
       env:
         toolchain: arm-linux-gnueabihf-clang
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -B build-${toolchain}
+        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -DENABLE_GPS=ON -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with aarch64-linux-gnu-gcc
       env:
         toolchain: aarch64-linux-gnu-gcc
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -B build-${toolchain}
+        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -DENABLE_GPS=ON -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with aarch64-linux-gnu-clang
@@ -89,7 +89,7 @@ jobs:
       env:
         toolchain: aarch64-linux-gnu-clang
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -B build-${toolchain}
+        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${toolchain}.cmake -DENABLE_WERROR=ON -DENABLE_GPS=ON -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with mips-linux-gnu-gcc

.gitignore

@@ -6,7 +6,6 @@
 .ccls-cache
 CMakeCache.txt
 CMakeFiles/
-Makefile
 cmake_install.cmake
 compile_commands.json
 tags

CMakeLists.txt

@@ -4,9 +4,9 @@ project(can-utils LANGUAGES C)
 
 message(STATUS "CMake version: ${CMAKE_VERSION}")
 
-include (CheckFunctionExists)
+include(CheckFunctionExists)
-include (CheckSymbolExists)
+include(CheckSymbolExists)
-include (GNUInstallDirs)
+include(GNUInstallDirs)
 
 if(NOT CMAKE_BUILD_TYPE)
   set(CMAKE_BUILD_TYPE Release)
@@ -14,6 +14,12 @@ endif()
 
 # Add an option to enable treating warnings as errors
 option(ENABLE_WERROR "Treat all compiler warnings as errors" OFF)
+option(ENABLE_GPS "Enable GPS support" OFF)
+
+find_package(PkgConfig REQUIRED)
+if(ENABLE_GPS)
+  pkg_check_modules(GPS REQUIRED libgps)
+endif()
 
 if(ENABLE_WERROR)
   add_compile_options(-Werror)
@@ -32,8 +38,8 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DCLOCK_TAI=11")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DSO_TXTIME=61")
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DSCM_TXTIME=SO_TXTIME")
 
-include_directories (.)
+include_directories(.)
-include_directories (./include)
+include_directories(./include)
 
 check_function_exists(fork HAVE_FORK)
 
@@ -195,6 +201,7 @@ if(NOT ANDROID)
     j1939-timedate-srv
     DESTINATION ${CMAKE_INSTALL_BINDIR})
 
+  if(ENABLE_GPS)
     set(PUBLIC_HEADER_J1939_VEHICLE_POSITION
       j1939_vehicle_position/j1939_vehicle_position_cmn.h
     )
@@ -204,12 +211,13 @@ if(NOT ANDROID)
     )
 
     target_link_libraries(j1939-vehicle-position-srv
-    PRIVATE can j1939 gps
+      PRIVATE can j1939 ${GPS_LIBRARIES}
     )
 
     install(TARGETS
       j1939-vehicle-position-srv
       DESTINATION ${CMAKE_INSTALL_BINDIR})
+  endif()
 
 endif()