Fixed build issues on Ubuntu 18.04 LTS.

-This should fix Issue #7.
-Added Check to make sure libudev is found.
-Added check to only link against udev if under linux.
-Fixed a build issue with the example not building.
-Added option to make sure compiler uses c++14 standard minimum.
-Added hid.c include for mac as prelimiary fix for issue #5.

Signed-off-by: David Rebbe <[email protected]>

CMakeLists.txt

@@ -1,8 +1,13 @@
 cmake_minimum_required(VERSION 3.9)
 
+include(GNUInstallDirs)
 
 add_definitions(-DLIBNEORADIO2_EXPORTS)
 
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
 file(READ "version.txt" ver)
 
 string(REGEX MATCH "VERSION_MAJOR ([0-9]*)" _ "${ver}")
@@ -33,8 +38,15 @@ add_library(neoradio2 SHARED
 
 if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
     target_sources(neoradio2 PRIVATE ${PROJECT_SOURCE_DIR}/hidapi/linux/hid.c)
+    find_library(UDEV_LIB_PATH udev)
+    message("UDEV LIBRARY PATH: ${UDEV_LIB_PATH}")
+    if(NOT UDEV_LIB_PATH)
+        message(FATAL_ERROR "udev not found, try running 'sudo apt install libudev-dev'")
+    endif()
 elseif (${CMAKE_SYSTEM_NAME} MATCHES "Windows")
     target_sources(neoradio2 PRIVATE ${PROJECT_SOURCE_DIR}/hidapi/windows/hid.c)
+elseif (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
+    target_sources(neoradio2 PRIVATE ${PROJECT_SOURCE_DIR}/hidapi/mac/hid.c)
 endif()
 
 set_target_properties(neoradio2 PROPERTIES
@@ -45,7 +57,9 @@ set_target_properties(neoradio2 PROPERTIES
 
 set_property(TARGET neoradio2 PROPERTY PUBLIC_HEADER libneoradio2.h libneoradio2common.h radio2_frames.h)
 
-target_link_libraries(neoradio2 PRIVATE udev)
+if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+    target_link_libraries(neoradio2 PRIVATE udev)
+endif()
 
 configure_file(libneoradio2.pc.in libneoradio2.pc @ONLY)
 
@@ -55,4 +69,4 @@ install(TARGETS neoradio2
 install(FILES ${CMAKE_BINARY_DIR}/libneoradio2.pc
     DESTINATION ${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig)
 
-add_subdirectory(${PROJECT_SOURCE_DIR}/example)
+add_subdirectory(${PROJECT_SOURCE_DIR}/example)

example/CMakeLists.txt

@@ -2,4 +2,5 @@ cmake_minimum_required(VERSION 3.9)
 
 add_executable(basic basic.c)
 include_directories(basic "/usr/local/include")
-target_link_libraries(basic neoradio2)
+include_directories(basic "../")
+target_link_libraries(basic neoradio2)