core: ditch LD_LIBRARY_PATH (branch yem/no-ld-library-path)

Hello All!

This series is an attempt to ditch LD_LIBRARY_PATH for host binaries.

Using LD_LIBRARY_PATH is causing build issues on certain distributions, like Fedore 23, see:

    https://bugs.busybox.net/show_bug.cgi?id=8456
    http://lists.busybox.net/pipermail/buildroot/2015-October/142898.html

Basically, on Fedora 23, ls (from coreutils) is now linked to libcap, which is also linked to libattr. However, outr own libcap is not linked to libattr, and ls is too. However, because of our LD_LIBRARY_PATH, the host ls is using our libcap, and thus fails to run.

This series:
- ?xes a few host packages, add RPATH to packages where it is missing
- fixes the host-mysql definition, allow it to be built always
- removes host-perl-file-util, it is not used anywhere and is broken
- cleanups libcurl about LD_LIBRARY_PATH
- adds a script to check that host binaries have appropriate RPATH
- finally removes LD_LIBRARY_PATH

Even though this is a relatively intrusive change, it in my opinion should go in master now, otherwise, we'd get a full release cycle broken on Fedora, which would really be a shame... :-/

Regards,
Yann E. MORIN.

The following changes since commit 2bc7c2e009ac08ae80cbf3ce736ade16a6cfcb26:

zxing-cpp: needs dynamic library (2015-11-13 16:39:29 +0100)

are available in the git repository at:

git://git.busybox.net/~ymorin/git/buildroot yem/no-ld-library-path

for you to fetch changes up to 0a14a9ff7f39c78d2a39f8ccde40a9f7a6d020b2:

core/pkg-infrastructures: remove LD_LIBRARY_PATH from the environment (2015-11-13 19:51:07 +0100)

----------------------------------------------------------------
Ben Boeckel (1):
core/pkg-infrastructures: remove LD_LIBRARY_PATH from the environment

Yann E. MORIN (5):
package/axfsutils: fix Makefile package/mysql: unconditionally define host variables package/perl-file-util: remove host variant package/libcurl: carefully override LD_LIBRARY_PATH
core: check host executables have appropriate RPATH

 package/Makefile.in                      |  2 -
 package/axfsutils/0001-fix-cflags.patch  | 19 +++++++++
 package/axfsutils/0002-use-ldflags.patch | 20 +++++++++
 package/axfsutils/axfsutils.mk           |  2 +-
 package/libcurl/libcurl.mk               |  2 +-
 package/mysql/mysql.mk                   | 39 +++++++++---------
 package/perl-file-util/perl-file-util.mk |  1 -
 package/pkg-generic.mk                   |  8 ++++
 support/scripts/check-host-rpath         | 71 ++++++++++++++++++++++++++++++++
 9 files changed, 140 insertions(+), 24 deletions(-)
 create mode 100644 package/axfsutils/0001-fix-cflags.patch
 create mode 100644 package/axfsutils/0002-use-ldflags.patch
 create mode 100755 support/scripts/check-host-rpath