github-actions: install libgps-dev where available

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

@@ -30,7 +30,45 @@ jobs:
         podman run --name stable -di --userns=keep-id:uid=1000,gid=1000 -v "$PWD":/home -w /home ${{ matrix.release }} bash
         podman exec -i stable uname -a
         podman exec -i stable id
+
+    - name: Update APT Sources List (Ubuntu Only)
+      if:
+        startsWith(matrix.release, 'ubuntu:') && matrix.release != 'ubuntu:20.04'
+      run: |
         podman exec -i -u root stable apt update
+        podman exec -e DEBIAN_FRONTEND='noninteractive' -i -u root stable apt install -o APT::Install-Suggests=false -qy \
+                lsb-release
+
+        podman exec -i -u root stable \
+                test -e /etc/apt/sources.list &&
+                podman exec -i -u root stable \
+                        sed -i -e 's|\(http.*:\)|[arch=amd64] \1|g' /etc/apt/sources.list
+
+        podman exec -i -u root stable \
+                test -e /etc/apt/sources.list.d/ubuntu.sources &&
+                podman exec -i -u root stable \
+                        sed -i -e '/^Components:/a Architectures: amd64' /etc/apt/sources.list.d/ubuntu.sources
+
+        echo "deb [arch=armhf,arm64] http://ports.ubuntu.com/ubuntu-ports/ $(podman exec -i stable lsb_release -cs) main restricted universe multiverse" | \
+                podman exec -i -u root stable tee -a /etc/apt/sources.list.d/cross.list
+        echo "deb [arch=armhf,arm64] http://ports.ubuntu.com/ubuntu-ports/ $(podman exec -i stable lsb_release -cs)-updates main restricted universe multiverse" | \
+                podman exec -i -u root stable tee -a /etc/apt/sources.list.d/cross.list
+        echo "deb [arch=armhf,arm64] http://ports.ubuntu.com/ubuntu-ports/ $(podman exec -i stable lsb_release -cs)-backports main restricted universe multiverse" | \
+                podman exec -i -u root stable tee -a /etc/apt/sources.list.d/cross.list
+
+    - name: Add Architecture
+      if:
+        matrix.release != 'ubuntu:20.04'
+      run: |
+        podman exec -i -u root stable dpkg --add-architecture arm64
+        podman exec -i -u root stable dpkg --add-architecture armhf
+
+    - name: Install Development Packages
+      env:
+        release: ${{ matrix.release == 'debian:experimental' && '-t experimental' || '' }}
+      run: |
+        podman exec -i -u root stable apt update
+        podman exec -e DEBIAN_FRONTEND='noninteractive' -i -u root stable apt upgrade -o APT::Install-Suggests=false -qy
         podman exec -e DEBIAN_FRONTEND='noninteractive' -i -u root stable apt install -o APT::Install-Suggests=false -qy ${release} \
                 clang \
                 cmake \
@@ -38,52 +76,67 @@ jobs:
                 gcc-aarch64-linux-gnu \
                 gcc-arm-linux-gnueabihf \
                 gcc-mips-linux-gnu \
+                libgps-dev \
                 make
 
+    - name: Install Cross Libs
+      env:
+        release: ${{ matrix.release == 'debian:experimental' && '-t experimental' || '' }}
+      if:
+        matrix.release != 'ubuntu:20.04'
+      run: |
+        podman exec -e DEBIAN_FRONTEND='noninteractive' -i -u root stable apt install -o APT::Install-Suggests=false -qy ${release} \
+                libgps-dev:arm64 \
+                libgps-dev:armhf
+
     - name: Configure & Build with gcc
       env:
         cc: gcc
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_C_COMPILER=${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
+        gps: ${{ matrix.release == 'ubuntu:20.04' && 'OFF' || 'ON' }}
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${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=${gps} -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with arm-linux-gnueabihf-clang
       if:
-        ${{ matrix.release != 'ubuntu:20.04' && matrix.release != 'debian:oldstable-slim' }}
+        matrix.release != 'ubuntu:20.04' && matrix.release != 'debian:oldstable-slim'
       env:
         toolchain: arm-linux-gnueabihf-clang
+        gps: ${{ matrix.release == 'ubuntu:20.04' && 'OFF' || 'ON' }}
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${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=${gps} -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with aarch64-linux-gnu-gcc
       env:
         toolchain: aarch64-linux-gnu-gcc
+        gps: ${{ matrix.release == 'ubuntu:20.04' && 'OFF' || 'ON' }}
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${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=${gps} -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with aarch64-linux-gnu-clang
       if:
-        ${{ matrix.release != 'ubuntu:20.04' && matrix.release != 'debian:oldstable-slim' }}
+        matrix.release != 'ubuntu:20.04' && matrix.release != 'debian:oldstable-slim'
       env:
         toolchain: aarch64-linux-gnu-clang
+        gps: ${{ matrix.release == 'ubuntu:20.04' && 'OFF' || 'ON' }}
       run: |
-        podman exec -i stable cmake -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=cmake/${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=${gps} -B build-${toolchain}
         podman exec -i stable cmake --build build-${toolchain}
 
     - name: Configure & Build with mips-linux-gnu-gcc

CMakeLists.txt

@@ -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)
@@ -67,6 +73,10 @@ set(PROGRAMS_J1939_TIMEDATE
   j1939-timedate-cli
 )
 
+set(PROGRAMS_J1939_VEHICLE_POSITION
+  j1939-vehicle-position-srv
+)
+
 set(PROGRAMS_ISOBUSFS
   isobusfs-srv
   isobusfs-cli
@@ -191,6 +201,24 @@ 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
+    )
+
+    add_executable(j1939-vehicle-position-srv
+      j1939_vehicle_position/j1939_vehicle_position_srv.c
+    )
+
+    target_link_libraries(j1939-vehicle-position-srv
+      PRIVATE can j1939 ${GPS_LIBRARIES}
+    )
+
+    install(TARGETS
+      j1939-vehicle-position-srv
+      DESTINATION ${CMAKE_INSTALL_BINDIR})
+  endif()
+
 endif()
 
 add_library(can STATIC

Makefile

@@ -67,6 +67,9 @@ PROGRAMS_J1939_TIMEDATE := \
 	j1939-timedate-srv \
 	j1939-timedate-cli
 
+PROGRAMS_J1939_VEHICLE_POSITION := \
+	j1939-vehicle-position-srv
+
 PROGRAMS_ISOBUSFS := \
 	isobusfs-srv \
 	isobusfs-cli
@@ -98,6 +101,7 @@ PROGRAMS_SLCAN := \
 PROGRAMS := \
 	$(PROGRAMS_CANGW) \
 	$(PROGRAMS_J1939_TIMEDATE) \
+	$(PROGRAMS_J1939_VEHICLE_POSITION) \
 	$(PROGRAMS_ISOBUSFS) \
 	$(PROGRAMS_ISOTP) \
 	$(PROGRAMS_J1939) \
@@ -126,7 +130,8 @@ endif
 all: $(PROGRAMS)
 
 clean:
-	rm -f $(PROGRAMS) *.o mcp251xfd/*.o isobusfs/*.o j1939_timedate/*.o
+	rm -f $(PROGRAMS) *.o mcp251xfd/*.o isobusfs/*.o j1939_timedate/*.o \
+		j1939_vehicle_position/*.o
 
 install:
 	mkdir -p $(DESTDIR)$(PREFIX)/bin
@@ -153,6 +158,8 @@ isobusfs_srv.o:	lib.h libj1939.h
 isobusfs_c.o:	lib.h libj1939.h
 j1939_timedate_srv.o: lib.h libj1939.h
 j1939_timedate_cli.o: lib.h libj1939.h
+j1939_vehicle_position_srv.o: lib.h libj1939.h
+
 canframelen.o:  canframelen.h
 
 asc2log:	asc2log.o	lib.o
@@ -182,6 +189,12 @@ j1939-timedate-cli:	lib.o \
 			j1939_timedate/j1939_timedate_cli.o
 		$(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@
 
+j1939-vehicle-position-srv: \
+			lib.o \
+			libj1939.o \
+			j1939_vehicle_position/j1939_vehicle_position_srv.o \
+		$(CC) $(LDFLAGS) $^ $(LDLIBS) -lgps -o $@
+
 isobusfs-srv:	lib.o \
 		libj1939.o \
 		isobusfs/isobusfs_cmn.o \