Re: lsusb.c relies on Linux-specific byte-swap call

Joe Peterson <[email protected]>
Newsgroups gmane.linux.usb.devel
Message-ID <[email protected]>
David Brownell wrote:
> On Monday 05 November 2007, Joe Peterson wrote:
>> David Brownell wrote:
>>> On Thursday 01 November 2007, Joe Peterson wrote:
>>>> the byte order issue in the compile.  BTW, attached is a new patch,
>>>> which fixes the problem in configure.in, thereby making use of autotools
>>>> rather than hard-coding the arch ifdef in the code:
>>> Please submit a patch against current cvs for usbutils, which includes
>>> your earlier patch...
>>>
>> Forgive my ignorance, but how to I access the CVS repo?
> 
> Goto http://sourceforge.net/projects/linux-usb/ and follow
> the "code -> cvs" link; use "usbutils" for the modulename.

OK, great - thanks!

Attached is the patch against your CVS that uses autotools instead of
hard-coded __FreeBSD__.

					Thanks, Joe

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byteorder.patch (text/x-patch, 1.2 KB)
diff -Nur old/configure.in new/configure.in
--- old/configure.in	2007-11-05 11:47:16.000000000 -0700
+++ new/configure.in	2007-11-05 11:47:24.000000000 -0700
@@ -20,7 +20,7 @@
 AC_FUNC_ALLOCA
 AC_HEADER_DIRENT
 AC_HEADER_STDC
-AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/ioctl.h sys/param.h unistd.h getopt.h errno.h ])
+AC_CHECK_HEADERS([fcntl.h stdlib.h string.h sys/ioctl.h sys/param.h unistd.h getopt.h errno.h asm/byteorder.h machine/endian.h])
 
 # Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
diff -Nur old/lsusb.c new/lsusb.c
--- old/lsusb.c	2007-11-05 11:47:04.000000000 -0700
+++ new/lsusb.c	2007-11-05 11:49:44.000000000 -0700
@@ -35,23 +35,17 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdarg.h>
-
-#ifdef __FreeBSD__
-
+#if defined(HAVE_ASM_BYTEORDER_H)
+#include <asm/byteorder.h>
+#define le16_to_cpu	__le16_to_cpu
+#elif defined(HAVE_MACHINE_ENDIAN_H)
 #include <machine/endian.h>
 #if _BYTE_ORDER == _LITTLE_ENDIAN
 #define le16_to_cpu(x) (x)
 #else
 #define le16_to_cpu	__bswap16
 #endif
-
-#else	/* Linux */
-
-#include <asm/byteorder.h>
-#define le16_to_cpu	__le16_to_cpu
-
 #endif
-
 #include <usb.h>
 
 /* NOTE:  that should be <libusb.h> and it should include
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