libsocketcan auto-downloaded and configured

Author: luismiguensfernandez

CMakeLists.txt

@@ -7,8 +7,10 @@ set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
-include_directories(src/include
-                    ${PROJECT_BINARY_DIR}/src/include/)
+include_directories(
+    src/include
+    ${PROJECT_BINARY_DIR}/src/include/
+)
 
 include(cmake/version.cmake)
 
@@ -23,16 +25,17 @@ set(SOURCES
 
 include(cmake/env.cmake)
 
-
 set(VENDOR_SOURCES
     src/main/CanVendorAnagate.cpp
 )
 
 if (UNIX)
+    include(cmake/libsocketcan.cmake)
+    include_directories(${LIBSOCKETCAN_INCLUDE_DIR})
     list(APPEND VENDOR_SOURCES
-            src/main/CanVendorSocketCan.cpp
-            src/main/CanVendorSocketCanSystec.cpp
-            )
+        src/main/CanVendorSocketCan.cpp
+        src/main/CanVendorSocketCanSystec.cpp
+    )
 endif()
 
 if (NOT DEFINED CAN_MODULE_MAIN_ONLY)
@@ -44,31 +47,36 @@ endif()
 
 include(cmake/anagate.cmake)
 
+
 add_library(CanModuleMain ${SOURCES} ${VENDOR_SOURCES})
-target_include_directories(CanModuleMain PUBLIC ${LOGIT_INCLUDE} ${anagate_SOURCE_DIR}/)
+
+target_include_directories(CanModuleMain PUBLIC
+    ${LOGIT_INCLUDE}
+    ${anagate_SOURCE_DIR}/
+)
+
 if (UNIX)
     target_link_libraries(CanModuleMain PUBLIC
-                            ${anagate_SOURCE_DIR}/Linux64/CentOS_9/libCANDLLStaticRelease64.a
-                            ${anagate_SOURCE_DIR}/Linux64/CentOS_9/libAnaGateStaticRelease.a
-                            ${anagate_SOURCE_DIR}/Linux64/CentOS_9/libAnaGateExtStaticRelease.a
-                            socketcan)
+        ${anagate_SOURCE_DIR}/Linux64/CentOS_9/libCANDLLStaticRelease64.a
+        ${anagate_SOURCE_DIR}/Linux64/CentOS_9/libAnaGateStaticRelease.a
+        ${anagate_SOURCE_DIR}/Linux64/CentOS_9/libAnaGateExtStaticRelease.a
+        libsocketcan
+    )
 else()
     target_link_libraries(CanModuleMain PUBLIC
-                            ${anagate_SOURCE_DIR}/Win64/AnaGateCanDll64.lib)
-    file(COPY "${anagate_SOURCE_DIR}/Win64/AnaGateCan64.dll" DESTINATION "${CMAKE_BINARY_DIR}/Release")
+        ${anagate_SOURCE_DIR}/Win64/AnaGateCanDll64.lib
+    )
+    file(COPY "${anagate_SOURCE_DIR}/Win64/AnaGateCan64.dll"
+         DESTINATION "${CMAKE_BINARY_DIR}/Release")
 endif()
 
-# Treat warnings as errors
 if (CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
-target_compile_options(CanModuleMain PRIVATE -Wall -Wextra -Werror)
+    target_compile_options(CanModuleMain PRIVATE -Wall -Wextra -Werror)
 elseif (CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
-# target_compile_options(CanModuleMain PRIVATE /W4 /WX)
-# I need to disable that feature due to a macro redefinition
-# in the header of Anagate software
+    # Disabled because of AnaGate macro redefinition issues
 endif()
 
 if (NOT DEFINED CAN_MODULE_MAIN_ONLY)
-    # Build Python Support and Google Unit Tests
     include(cmake/pybind11.cmake)
     include(cmake/gtest.cmake)
 endif()

cmake/libsocketcan.cmake

@@ -0,0 +1,34 @@
+FetchContent_Declare(
+  libsocketcan
+  GIT_REPOSITORY https://github.com/linux-can/libsocketcan.git
+  GIT_TAG        v0.0.12
+  DOWNLOAD_EXTRACT_TIMESTAMP True
+)
+
+FetchContent_MakeAvailable(libsocketcan)
+
+set(LIBSOCKETCAN_INCLUDE_DIR ${libsocketcan_SOURCE_DIR}/include)
+
+set(LIBSOCKETCAN_LIB ${libsocketcan_SOURCE_DIR}/src/.libs/libsocketcan.a)
+
+add_custom_command(
+    OUTPUT ${LIBSOCKETCAN_LIB}
+    WORKING_DIRECTORY ${libsocketcan_SOURCE_DIR}
+    COMMAND bash autogen.sh
+    COMMAND bash configure --enable-static --disable-shared CFLAGS=-fPIC CXXFLAGS=-fPIC
+    COMMAND make
+    DEPENDS ${libsocketcan_SOURCE_DIR}
+)
+
+add_library(libsocketcan STATIC IMPORTED GLOBAL)
+
+set_target_properties(libsocketcan PROPERTIES
+    IMPORTED_LOCATION ${LIBSOCKETCAN_LIB}
+    INTERFACE_INCLUDE_DIRECTORIES ${LIBSOCKETCAN_INCLUDE_DIR}
+)
+
+add_custom_target(libsocketcan_build ALL
+    DEPENDS ${LIBSOCKETCAN_LIB}
+)
+
+add_dependencies(libsocketcan libsocketcan_build)