PTHREAD_LIBS in bsd.port.mk

[Morten Rodal]

Is there a reason this is not defined with ?=  (see attached patch if
you dont understand what I mean).  Wouldn't this prevent me from
passing on PTHREAD_LIBS=-lkse or -lthr?

-- 
Morten Rodal

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--- /tmp/bsd.port.mk	Sun Sep  7 11:00:18 2003
+++ bsd.port.mk	Sun Sep  7 11:00:44 2003
@@ -1634,8 +1634,8 @@
 PTHREAD_CFLAGS=	-D_THREAD_SAFE
 PTHREAD_LIBS=		-pthread
 .else
-PTHREAD_CFLAGS=	-D_THREAD_SAFE
-PTHREAD_LIBS=		-lc_r
+PTHREAD_CFLAGS?=	-D_THREAD_SAFE
+PTHREAD_LIBS?=		-lc_r
 .endif
 
 .if exists(/usr/bin/fetch)
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