feat(cmake): Use config.h to set the preprocessor device variables

CMakeLists.txt

@@ -66,9 +66,6 @@ find_package (Threads REQUIRED)
 include_directories(${libosal_INCLUDE_DIRS} include)
 link_directories(${libosal_LIB_DIR})
 
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_config.h.in ${CMAKE_CURRENT_SOURCE_DIR}/include/libethercat/config.h)
-
-
 set(SRC_ETHERCAT 
     src/async_loop.c
     src/coe.c
@@ -96,29 +93,31 @@ list(FIND ECAT_DEVICE "bpf" HAS_SOCK_BPF)
 if (${HAS_SOCK_RAW} GREATER -1)
     message("Include device sock_raw")
     list(APPEND SRC_HW_LAYER src/hw_sock_raw.c)
-    add_compile_definitions(LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_LEGACY)
+    set(LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_LEGACY 1)
 endif()
 if (${HAS_SOCK_RAW_MMAPED} GREATER -1)
     message("Include device sock_raw_mmaped")
     list(APPEND SRC_HW_LAYER src/hw_sock_raw_mmaped.c)
-    add_compile_definitions(LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_MMAPED)
+    set(LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_MMAPED 1)
 endif()
 if (${HAS_SOCK_FILE} GREATER -1)
     message("Include device file")
     list(APPEND SRC_HW_LAYER src/hw_file.c)
-    add_compile_definitions(LIBETHERCAT_BUILD_DEVICE_FILE)
+    set(LIBETHERCAT_BUILD_DEVICE_FILE 1)
 endif()
 if (${HAS_SOCK_PIKEOS} GREATER -1)
     message("Include device pikeos")
     list(APPEND SRC_HW_LAYER src/hw_pikeos.c)
-    add_compile_definitions(LIBETHERCAT_BUILD_DEVICE_PIKEOS)
+    set(LIBETHERCAT_BUILD_DEVICE_PIKEOS 1)
 endif()
 if (${HAS_SOCK_BPF} GREATER -1)
     message("Include device bpf")
     list(APPEND SRC_HW_LAYER src/hw_bpf.c)
-    add_compile_definitions(LIBETHERCAT_BUILD_DEVICE_BPD)
+    set(LIBETHERCAT_BUILD_DEVICE_BPF 1)
 endif()
 
+configure_file(${CMAKE_CURRENT_SOURCE_DIR}/cmake/cmake_config.h.in ${CMAKE_CURRENT_SOURCE_DIR}/include/libethercat/config.h)
+
 # LIBS
 add_library(ethercat ${SRC_ETHERCAT} ${SRC_HW_LAYER})
 target_link_libraries (ethercat ${CMAKE_THREAD_LIBS_INIT} ${libosal_LIBS})

cmake/cmake_config.h.in

@@ -124,6 +124,21 @@
 /* Define to the version of this package. */
 #cmakedefine LIBETHERCAT_VERSION "@LIBETHERCAT_VERSION@"
 
+/* Define to build DEVICE_SOCK_RAW_LEGACY. */
+#cmakedefine LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_LEGACY ${LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_LEGACY}
+
+/* Define to build DEVICE_SOCK_RAW_MMAPED. */
+#cmakedefine LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_MMAPED ${LIBETHERCAT_BUILD_DEVICE_SOCK_RAW_MMAPED}
+
+/* Define to build DEVICE_FILE. */
+#cmakedefine LIBETHERCAT_BUILD_DEVICE_FILE ${LIBETHERCAT_BUILD_DEVICE_FILE}
+
+/* Define to build BUILD_DEVICE_PIKEOS. */
+#cmakedefine LIBETHERCAT_BUILD_DEVICE_PIKEOS ${LIBETHERCAT_BUILD_DEVICE_PIKEOS}
+
+/* Define to build BUILD_DEVICE_BPD. */
+#cmakedefine LIBETHERCAT_BUILD_DEVICE_BPF ${LIBETHERCAT_BUILD_DEVICE_BPF}
+
 /* Define to necessary symbol if this constant uses a non-standard name on
    your system. */
 #undef PTHREAD_CREATE_JOINABLE