ports/162995: Add USE_READLINE knob

[Max Khon]

>Number:         162995
>Category:       ports
>Synopsis:       Add USE_READLINE knob
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-ports-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Thu Dec 01 14:10:09 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Max Khon
>Release:        FreeBSD 8.2-STABLE i386
>Organization:
>Environment:
System: FreeBSD freefall.freebsd.org 8.2-STABLE FreeBSD 8.2-STABLE #5 r227907: Wed Nov 23 21:55:50 UTC 2011 simon at freefall.freebsd.org:/usr/obj/usr/src/sys/FREEFALL i386


>Description:
Attached patch adds USE_READLINE support with the support for
upcoming removal of libreadline from 10.0.

Index: Mk/bsd.port.mk
===================================================================
RCS file: /home/pcvs/ports/Mk/bsd.port.mk,v
retrieving revision 1.699
diff -u -p -r1.699 bsd.port.mk
--- Mk/bsd.port.mk	9 Nov 2011 08:53:12 -0000	1.699
+++ Mk/bsd.port.mk	1 Dec 2011 13:57:23 -0000
@@ -375,6 +375,12 @@ FreeBSD_MAINTAINER=	portmgr at FreeBSD.org
 # USE_SDL		- If set, this port uses the sdl libraries.
 #				  See bsd.sdl.mk for more information.
 ##
+# USE_READLINE	- If set, this port uses libreadline.
+# 				  Legal values are: yes, base, port
+#				  yes, base: use base system libreadline on FreeBSD 9 or earlier,
+#				  	use ports/devel/readline on FreeBSD 10.0+
+#				  port: always use ports/devel/readline
+##
 # USE_OPENAL	- If set, this port relies on the OpenAL package.
 #				  Legal values are: al, soft, si, alut.
 #				  If set to an unknown value, the port is marked broken.
@@ -1705,6 +1711,15 @@ MAKE_ENV+=	${b}="${${b}}"
 .include "${PORTSDIR}/Mk/bsd.ldap.mk"
 .endif
 
+.if defined(USE_READLINE)
+.if ${USE_READLINE} == "port" || ${OSVERSION} > 900000 #1000000
+LIB_DEPENDS+=	readline.6:${PORTSDIR}/devel/readline
+CPPFLAGS+=		-I${LOCALBASE}/include
+LDFLAGS+=		-L${LOCALBASE}/lib -lreadline
+CONFIGURE_ENV+=	CPPFLAGS="${CPPFLAGS}" LDFLAGS="${LDFLAGS}"
+.endif
+.endif
+
 .if defined(USE_OPENAL)
 _OPENAL_ALL=	al si soft alut
 _OPENAL_LIBS=	si soft
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
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