C Preprocessor: Expected Declaration Specifiers

["Ryan Slominski" <ryan dot slominski at gmail dot com>]

Hello,
 I am trying to port code from a Debian distribution with gcc version
3.4.4 to a Ubuntu distribution with gcc version 4.1.2.  The code
compiles and runs on the Debian machine but fails to compile on the
Ubuntu with an error message I do not understand.  Here is the output
of the compile:

rjslom@turbo-dog:~/msg$ make
gcc msg_client.c -o msg_client
In file included from msg_client.c:13:
msg_bmk.h:34: error: expected declaration specifiers or '...' before 'msgbmk'
msg_bmk.h:34: error: expected declaration specifiers or '...' before 'msqid'
msg_bmk.h:34: error: expected declaration specifiers or '...' before
'MSG_TRIALS'
msg_bmk.h:34: warning: data definition has no type or storage class
make: *** [msg_client] Error 1

The code in question (line 34 of msg_bmk) is a preprocessor macro
which is supposed to expand to a user stub for a new system call.
Here is the line:

_syscall2( int, msgbmk, int, msqid, int, MSG_TRIALS )

The file msg_bmk.h includes the header file <linux/unistd.h> which
contains the macro definition.

Any feedback would be great.

Thanks for you time,

Ryan