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Description: fix dpkg-shlibdeps warning
Essentially this says don't link in libraries when no symbol from those
libraries are used. Not implementing this patch causes warning messages
to appear during dpkg-shlibdeps processing, and eliminating those is the
first motivation for this patch. For more information see
https://buildd.debian.org/~brlink/bytag/I-shlibs-useless-link.html .
One option would have been to remove the '-ldl' argument. However it seems
safer and more generic to use '-Wl,--as-needed'. This can be viewed as part of
a wider Ubuntu/Debian movement to tighten the linking in of libraries.
For more information on this wider movement see
http://wiki.debian.org/ToolChain/DSOLinking .
Author: Nicholas Bamber <nicholas@periapt.co.uk>
Forwarded: yes, sent private email to upstream authors
Last-Update: 2012-02-21
--- a/makefiles/Makefile.freebsd
+++ b/makefiles/Makefile.freebsd
@@ -6,7 +6,7 @@
# (Where to find X11 libraries, etc)
#
SYSTEM_INCLUDES =
-SYSTEM_LDFLAGS =
+SYSTEM_LDFLAGS = -Wl,--as-needed
SYSTEM_LIBS = -pthread
####SYSTEM_LIBS = -lc_r
--- a/makefiles/Makefile.linux
+++ b/makefiles/Makefile.linux
@@ -7,6 +7,7 @@
#
SYSTEM_INCLUDES = -I/usr/X11R6/include
SYSTEM_LDFLAGS = -L/usr/X11R6/lib
+SYSTEM_LDFLAGS += -Wl,--as-needed
SYSTEM_LIBS = -ldl -lpthread -lpcap
# 2) System specific capabilities
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