Bug 73933

Summary: Compiling with -mcpu fails on code including sys/user.h
Product: Base System Reporter: Tim Bishop <tdb>
Component: sparc64Assignee: freebsd-sparc64 (Nobody) <sparc64>
Status: Closed FIXED    
Severity: Affects Only Me CC: tdb
Priority: Normal    
Version: 5.3-RELEASE   
Hardware: Any   
OS: Any   

Description Tim Bishop freebsd_committer freebsd_triage 2004-11-14 13:50:26 UTC 
	If I optimise for my ultrasparc 2 processor by using the
	compile option:

	-mcpu=ultrasparc

	I get the following build failure:

	/usr/include/sys/user.h:105:2: #error "Unknown architecture"

Fix: 

Unsure. There's some tests in user.h which are all failing.
	Maybe another case needs to be added?
How-To-Repeat: 	Simple code to demonstrate this:

	#include <stdio.h>
	#include <sys/param.h>
	#include <sys/user.h>
	int main() {
		printf("Hello World\n");
		return 0;
	}

	Testing compiling normally and with -mcpu:

	gcc -Wall -o hello hello.c
	gcc -Wall -mcpu=ultrasparc -o hello2 hello.c
	In file included from hello.c:3:
	/usr/include/sys/user.h:105:2: #error "Unknown architecture"

	The first compile worked fine, and the second failed.
Comment 1 David E. O'Brien freebsd_committer freebsd_triage 2004-11-14 19:55:32 UTC 
State Changed
From-To: open->closed

CPU ultrasparc is the default.  Unfornately the configuring for what 
mcpu should parse is a little convoluted and this is why using mcpu=ultrasparc 
doesn't work. But if it did work, it wouldn't make any difference.