Fix invalid Requires.private entry in libirecovery.pc due to missing autoconf variable

1 files changed, 2 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 6481d74..e4793e1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -108,6 +108,8 @@ AS_IF([test "x$with_dummy" = "xyes"], [
                 ], [
                         PKG_CHECK_MODULES(libusb, libusb-1.0 >= $LIBUSB_VERSION)
                         USB_BACKEND="libusb `$PKG_CONFIG --modversion libusb-1.0`"
+                        LIBUSB_REQUIRED="libusb-1.0 >= $LIBUSB_VERSION"
+                        AC_SUBST(LIBUSB_REQUIRED)
                 ])
         ])
 ])