This patch has no influence if you don't have libcwd installed.
Note that libcwd (http://libcwd.sourceforge.net/) is only
available for linux.
A default compile of libcwd does memory allocation tracking,
which is too slow for everyday usage of the viewer (usable,
but notably slower) and we don't need that. Configure your
libcwd as follows:
./configure --prefix=/sl/usr --disable-alloc --enable-optimize
Or whatever prefix you prefer (add --enable-maintainer-mode
if you're compiling it from the SVN repository), add
--disable-nonthreading to compile twice as fast.
If you have it installed you can activate it's use by setting a
few environment variables:
CXXFLAGS="$(pkg-config --cflags libcwd_r)"
LDFLAGS="$(pkg-config --libs libcwd_r) -lpthread"
and then reconfiguring the viewer.
The -lpthread is needed when using ld.gold, however, if you
leave it out you might get an LDFLAGS that ends on trailing
whitespaces, which doesn't work for some reason.
Also, if you installed it in a non-standard place (/sl/usr
above) then you need this to run the viewer (and tests):
export LD_LIBRARY_PATH="/sl/usr/lib"
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