Bug#423462: LINUX_VERSION_CODE is defined but has no value in /usr/include/linux/version.h

["Scott Bell" <sebell@gmail.com>]

Package: linux-libc-dev
Version: 2.6.20-3

When compiling software such as GNU Emacs, the compiler complains
when LINUX_VERSION_CODE is conditionalized with an #if directive:

In file included from ./config.h:979,
                from dispnew.c:23:
./s/gnu-linux.h:49:24: error: operator '>' has no left operand
./s/gnu-linux.h:52:24: error: operator '>=' has no left operand
./s/gnu-linux.h:55:24: error: operator '>=' has no left operand

The offending code in gnu-linux.h references LINUX_VERSION_CODE,

#if LINUX_VERSION_CODE > 0x10200
#define LINUX_SIGIO_DOES_WORK
#endif /* LINUX_VERSION_CODE > 0x10200 */
#if LINUX_VERSION_CODE >= 0x20000
#define LINUX_MAP_SHARED_DOES_WORK
#endif /* LINUX_VERSION_CODE >= 0x20000 */
#if LINUX_VERSION_CODE >= 0x20400

... which is defined in /usr/include/linux/version.h:

#define LINUX_VERSION_CODE
#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))

This is under unstable, gcc 4:4.1.2-2, libc6-dev 2.5-7

Thanks,

- Scott Bell