pdfium: Hide bundled FreeType symbolsHEADmaster

When building on macOS with:
--enable-headless
--without-system-fontconfig
--without-system-freetype

Loading variable font instances with --headless fails, because FreeType
can’t load any font variations. Turns out pdfium bundles its own copy of
freetype and it is built without variable fonts support, and we end up
finding the symbols from this freetype instead of our bundled one.

Fix this by patching pdfium to hide the symbols of its bundled freetype.

Ideally it should even be built against our bundled freetype, but that
is a bigger change and I don’t know if it patches freetype or of it is a
vanilla copy.

Change-Id: Id50eb340fc7b82b8e8f32a743e856cf2f6bd89cd
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/203625
Tested-by: Jenkins
Reviewed-by: Khaled Hosny <khaled@libreoffice.org>

0 files changed, 0 insertions, 0 deletions