Add USES=libarchive, stop setting LDFLAGS.

1. Import a pull request I've just sent upstream that makes FindHelper.cmake
   behave better and stop using pkg-config's output directly as include and
   library paths. The consequence is that libraries like libarchive,
   libsndfile, jack etc are now found with their full path and we can stop
   setting LDFLAGS in Makefile.

2. Set USES=libarchive. Even though the port does not require any
   functionality that is only present in libarchive from ports, explicitly
   depending on a certain version makes things more consistent.
   Additionally, before this patch there would be no dependency on
   libarchive from ports but since the linker was previously called like
   this:
      c++ ... -o hydrogen -L/usr/local/lib -larchive -lsndfile ...
   so the port would end up linking against libarchive from ports when it
   was present (which is always, since devel/cmake depends on it). And with
   this patch we have
      c++ ... -o hydrogen -larchive /usr/local/lib/libsndfile.so ...
   which does link against libarchive from base, but then fails `make
   stage-qa', which expects all ports to link against ports libarchive.

PR:		202905
Approved by:	FreeBSD@ShaneWare.Biz (maintainer)

0 files changed, 0 insertions, 0 deletions