tree 9498a2ab46645444c17c6890f13713e04db12225
parent 332ef5423df9aa7a28166907f4a6ac8ac095163d
author Miklos Vajna <vmiklos@collabora.co.uk> 1494028494 +0200
committer Chromium commit bot <commit-bot@chromium.org> 1494031471 +0000

core: allow building against system zlib

In a way similar to the existing USE_SYSTEM_LIBJPEG. The default is of
course still the DEPS-based zlib checkout.

Changes in v2:

1) Since Chromium doesn't have //third_party:zlib (AKA a "zlib" target in
//third_party/BUILD.GN) all the targets that depended on //third_party:zlib now
depend on third_party:zlib, which always points to PDFium's
third_party/BUILD.GN. The targets that depended on //third_party:zlib in
third_party/BUILD.GN just depend on :zlib instead.

2) Move the zlib bits out of !build_with_chromium block.

Change-Id: Id73eb07591418ff2ae71b83b87c18af71b49a22a
Reviewed-on: https://pdfium-review.googlesource.com/5030
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>