Date: Fri, 23 Oct 1998 15:11:03 -0500 From: Glenn Johnson <gjohnson@commserver.srrc.usda.gov> To: freebsd-hackers@FreeBSD.ORG Subject: reconciling different defines in header files between Linux and FreeBSD Message-ID: <199810232011.PAA00764@symbion.srrc.usda.gov>
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Greetings,
I am trying to compile code on FreeBSD 3.0 that was written with Linux in
mind.
The following code snippet is where it is failing:
void galloc_ (nwords, wordsize, iclear, refarray, offset)
f77_int *nwords, *wordsize, *iclear;
offset_type *offset;
f77_wp *refarray;
{
f77_wp *gmalloc();
size_t nbytes;
offset_type n;
#ifdef DO_SHM
int shmflags = 0;
void *brkadr, *sbrk();
key_t shmkey;
The error that I get is:
bsd/mdutil.c: In function `galloc_':
bsd/mdutil.c:2630: conflicting types for `sbrk'
/usr/include/unistd.h:168: previous declaration of `sbrk'
bsd/mdutil.c:2630: warning: extern declaration of `sbrk' doesn't match
global one
sbrk is defined in <unistd.h> in FreeBSD as:
char *sbrk __P((int));
sbrk is defined in <unistd.h> in Linux as:
extern __ptr_t __sbrk __P ((ptrdiff_t __delta));
extern __ptr_t sbrk __P ((ptrdiff_t __delta));
What is the right way to reconcile my code? Do I need to redefine sbrk in the source file as extern or do I make the call explicitly char?
Thanks in advance.
--
Glenn Johnson
Technician
USDA, ARS, SRRC
New Orleans, LA
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