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DIR is the dir path of the libFuzzer.a static library.

When used, it forces a static build without vlc binary and enable sanitize
coverage.

How to fetch and build libFuzzer.a from llvm.org:
$ git clone https://git.llvm.org/git/compiler-rt
$ cd compiler-rt/lib/fuzzer

for gcc:
$ CXX=g++ ./build.sh

for clang:
$ ./build.sh

This a partial merge of the work done by Shaleen during GSOC 2017. See
https://code.videolan.org/GSoC2017/shalzz/vlc.git

This includes support for statically linked plugins. It vastly increases
the test iteration speed, which is critical for fuzz testing.
Furthermore, it is necessary for coverage-driven fuzz testing to work at
all.

This also provides a (manually compiled only) back-end for LLVM's
LibFuzzer using mostly the same code.

1) Debugging, regression testing or unguided fuzzing:
  - Make a normal build (debug and sanitization recommended).
  - Execute: "test/vlc-demux-run [demux name] <file path>"

2) American Fuzzy Lop run:
  - Make a *static* build with AFL as the toolchain.
  - (Where applicable) perform adequate religious luck granting
    offerings or other rites.
  - Run AFL with test/vlc-demux-run as the fuzzed executable.

3) LibFuzzer:
  - Make a preferrably static build with Clang as the toolchain.
  - Manually build test/vlc-demux-libfuzzer.
  - Run the executable with the LibFuzzer command line parameters syntax.

This test case requires libvlccore for block_Alloc().
This change removes the need for the -static kludge.

This avoids the ugly hack based on dialogs and home directory.

The test requires server-side TLS.

This fixes the build without gcrypt.

This test doesn't depend on data of the running user anymore.
This reverts commit 06add6ac.

This test never worked.

This doesn't test network services anymore.

This test never worked.

Add missing samples/slaves to EXTRA_DIST

test_media_has_slaves_from_player is deactivated for now since there is now way
to test inputs in a reliable way. Indeed, demux modules may depend on
configuration and systems libs.

TODO: test libvlc_media_player_add_slave

This test passing credentials via url, option, dialog, memory keystore,
permanent keystore. This also test reusing credentials with http and smb
protocols.

Only callacks are tested by default. In order to test qt dialogs, run the test
manually with './test_src_interface_dialog -a'.

Don't use libvlc_media_parse and libvlc_media_get_tracks_info (deprecated).

This test compare IO output/returns between libc FILE functions and stream
functions.

This commit also add an extra test: 'test_src_input_stream_net' to test a http
file.

(It is already tested in dist(check) but that is way too slow.)

Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

This reverts commit 15498896.

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>