fix AC_CHECK_HEADER for libusb.h
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@@ -3415,10 +3415,10 @@ AS_HELP_STRING([--enable-hidapi-libusb], [use libusb for low level joystick driv
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hidapi_support=yes
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if test x$enable_hidapi_libusb = xyes; then
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PKG_CHECK_MODULES([LIBUSB], [libusb-1.0], have_libusb=yes, have_libusb=no)
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save_CFLAGS="$CFLAGS"
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CFLAGS="$save_CFLAGS $LIBUSB_CFLAGS"
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AC_CHECK_HEADER(libusb.h, have_libusb_h=yes)
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CFLAGS="$save_CFLAGS"
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save_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$save_CPPFLAGS $LIBUSB_CFLAGS"
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AC_CHECK_HEADER(libusb.h, have_libusb_h=yes, have_libusb_h=no)
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CPPFLAGS="$save_CPPFLAGS"
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if test x$have_libusb_h = xno && test x$require_hidapi_libusb = xyes; then
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hidapi_support=no
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fi
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