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Diffstat (limited to 'libusb/libusb.h')
-rw-r--r--libusb/libusb.h19
1 files changed, 12 insertions, 7 deletions
diff --git a/libusb/libusb.h b/libusb/libusb.h
index d8b17de..277f040 100644
--- a/libusb/libusb.h
+++ b/libusb/libusb.h
@@ -32,12 +32,17 @@
#include <time.h>
#include <limits.h>
-// Work around for existing libusb 1.0 code that might have used "interface"
-// instead of the newer "usb_interface", in libusb_config_descriptor.
-// "interface" was changed to "usb_interface" to work around macro redefinition
-// issues on Windows platforms.
-#if !defined(OS_WINDOWS) && !defined(interface)
-#define interface usb_interface
+// 'interface' might be defined as a macro on Windows, so we need to undefine
+// it so as not to break the current libusb API, because libusb_config_descriptor
+// has an 'interface' member
+// As this could still be problematic if you include windows.h after libusb.h in
+// your sources, we attempt to detect that as well.
+#if defined(OS_WINDOWS)
+#if !defined(interface) && !defined(_WINDOWS_)
+#error "Please make sure you include both windows.h and libusb.h in your source, in that order."
+#elif defined(interface)
+#undef interface
+#endif
#endif
// MSVC doesn't know ssize_t
@@ -513,7 +518,7 @@ struct libusb_config_descriptor {
/** Array of interfaces supported by this configuration. The length of
* this array is determined by the bNumInterfaces field. */
- const struct libusb_interface *usb_interface;
+ const struct libusb_interface *interface;
/** Extra descriptors. If libusb encounters unknown configuration
* descriptors, it will store them here, should you wish to parse them. */