net-p2p/bitcoin: How much of this sed script is actually required?

[Robert Backhaus]

As the maintaner of this port, I'll be updating it soon, as the new
version is currently in rc.
I'd like to clean up this sed script applied to a makefile, but I
don't know how much of it might be requred. For reference, the port
builds and works with only the last one - removal of "-l dl".

Are any of these things required for reasons I am not aware of?

@cd ${WRKSRC}/src && ${CP} -p makefile.unix Makefile
        @${REINPLACE_CMD} \
                -e 's|^CXXFLAGS=.*$$|CXXFLAGS += $$(DEFS)|' \
                -e 's|^USE_UPNP.*$$||' \
                -e 's|-l pthread|${PTHREAD_LIBS}|g' \
                -e 's:-O3::' -e 's:-\(march=[A-Za-z0-9]*\)::g' \
                -e 's:-l dl::' \
                ${WRKSRC}/src/Makefile

Also worthy of note: These changes only have an effect when this port
is built as a command-line daemon. This Makefile is not used when
building it as a Qt GUI (default, and most common). If there are any
important items here, they could be applied to the GUI's makefile.

Diff from original to processed Makefile:

--- Makefile.bak        2012-10-05 12:30:57.000000000 +1000
+++ Makefile    2012-10-10 16:20:50.000000000 +1000
@@ -2,7 +2,7 @@
 # Distributed under the MIT/X11 software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.

-USE_UPNP:=0
+
 USE_IPV6:=1

 LINK:=$(CXX)
@@ -51,8 +51,8 @@
 LIBS+= \
  -Wl,-B$(LMODE2) \
    -l z \
-   -l dl \
-   -l pthread
+    \
+   -pthread

For reference, the original Makefile is attached.

P.S. Appologies if this message has already been recieved - I have my
mailing list mail sent to a +address, and my normal address was not
subscribed to the list, so I was not sure if it had perhaps been
rejected. So I am resending it after subscribing my unadorned address.
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