Problem with conditional in Makefile

[Freddie Cash]

Hey oh,

I'm working on an update for the www/dansguardian* ports.  I need to 
check the version of FreeBSD to determine which version of GCC to use 
(DansGuardian support GCC 2 and 3).  I have the following construct in 
the Makefile:

.if ${OSVERSION} > 500000 || defined(WITH_GCC3)
CONFIGURE_ARGS+=	--gccver=3
.else
CONFIGURE_ARGS+=	--gccver=2
.endif

However, trying to use the Makefile for anything generates the following 
error:

[root at spark ports/www/dansguardian]# make clean
"Makefile", line 31: Malformed conditional (${OSVERSION} > 500000 || 
defined(WITH_GCC3))
"Makefile", line 31: Missing dependency operator
"Makefile", line 33: if-less else
"Makefile", line 33: Need an operator
"Makefile", line 35: if-less endif
"Makefile", line 35: Need an operator
make: fatal errors encountered -- cannot continue

I've compared my .if line with that in other ports, and I can't see 
anything that is wrong.  If I remove the ${OSVERSION} section and just 
use

.if defined(WITH_GCC3)

it works perfectly.

Could someone please point out what I am doing wrong, or where to search 
for more information on using OSVERSION and/or .if statement?  Muchly 
obliged.

Please CC: me as I am not (yet) subscribed to this list.
-- 
Freddie Cash				District HelpDesk / Network Admin
fcash at sd73.bc.ca			helpdesk at sd73.bc.ca
					(250) 374-0679 ext. 219