From d210d2c67e0aceb38979c96ba888981a0a426d43 Mon Sep 17 00:00:00 2001
From: Gwenhael Goavec-Merou <gwenhael.goavec-merou@trabucayre.com>
Date: Tue, 17 Mar 2020 07:25:26 +0100
Subject: [PATCH] use libusb_attach_kernel_driver only when OS is Linux

---
 CMakeLists.txt       | 6 ++++++
 src/ftdipp_mpsse.cpp | 3 +++
 2 files changed, 9 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 74addf6..b5457dd 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -123,6 +123,12 @@ target_link_libraries(openFPGALoader
 	${LIBUSB_LIBRARIES}
 	${LIBFTDI_LIBRARIES}
 )
+
+# libusb_attach_kernel_driver is only available on Linux.
+if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
+	add_definitions(-DATTACH_KERNEL)
+endif()
+
 if(ENABLE_UDEV)
 include_directories(${LIBUDEV_INCLUDE_DIRS})
 target_link_libraries(openFPGALoader ${LIBUDEV_LIBRARIES})
diff --git a/src/ftdipp_mpsse.cpp b/src/ftdipp_mpsse.cpp
index c157826..4de2277 100644
--- a/src/ftdipp_mpsse.cpp
+++ b/src/ftdipp_mpsse.cpp
@@ -131,11 +131,14 @@ int FTDIpp_MPSSE::close_device()
 			fprintf(stderr, "release interface failed %d\n", rtn);
 			return EXIT_FAILURE;
 		}
+#ifdef ATTACH_KERNEL
+		/* libusb_attach_kernel_driver is only available on Linux. */
 		if (_ftdi->module_detach_mode == AUTO_DETACH_SIO_MODULE) {
 			rtn = libusb_attach_kernel_driver(_ftdi->usb_dev, _ftdi->interface);
 			if( rtn != 0)
 				fprintf(stderr, "detach error %d\n", rtn);
 		}
+#endif
 	}
 	ftdi_usb_close_internal();