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ci: fix default options in meson ci

See merge request cairo/cairo!80

Follow-up fix to !78

pdf: fix leak of source surfaces

See merge request cairo/cairo!51

cairo-trace: Fix escape character encoding in string literals

See merge request cairo/cairo!72

This fixes a typo wherein both a return character and a tab character
were encoded when only a return character was specified for encoding.
Signed-off-by: George Matsumura <gmmatsumura01@bvsd.org>

cff: Allow empty array of operands for certain operators

See merge request cairo/cairo!39

Operators BlueValues, OtherBlues, FamilyBlues, FamilyOtherBlues,
StemSnapH and StemSnapV have operands of type delta which can be
a number or an array of delta-encoded numbers. This array can be
empty according to freetype developers.
This commit checks whether current operator is among those listed
and permits empty operand in such case.

Fix conversion from ISO 8601 to PDF date string

Closes #392

See merge request cairo/cairo!35

The code used to unintentionally drop the minutes from the timezone
offset, see issue #392. This is now fixed.

ci: require opengl in meson fedora build

See merge request cairo/cairo!79

Follow-up to !78

Disable gl backend by default, just like autotools does:

  --enable-gl=[no/auto/yes]
                          Enable cairo's OpenGL surface backend feature
                          [default=no]
  --enable-glesv2=[no/auto/yes]
                          Enable cairo's OpenGLESv2 surface backend feature
                          [default=no]
  --enable-glesv3=[no/auto/yes]
                          Enable cairo's OpenGLESv3 surface backend feature
                          [default=no]

Fix how offset, scale and transparency are handled.

Also do the same change in the "win32-printing" backend as it has a copy of the code from PDS, PS and SVG backends.

The libpng subproject dependency variable name was wrong. It's
libpng_dep:

https://github.com/mesonbuild/libpng/blob/1.6.37/meson.build#L110

This fixes a few compiler warnings that were encountered with gcc 9.3.0.
Signed-off-by: George Matsumura <gmmatsumura01@bvsd.org>

That way when other projects consume our declared dep, they get
transitive dependencies too based on what features cairo was built
with. Without this, projects that build cairo as a subproject and also
build, say, fontconfig as a subproject will fail to find cairo-ft.h
(etc).

Same as autotools does. Arguably it would be better to do
it the other way round and generate cairo-version.h from
the version in meson.build or configure.ac but for now
let's do this so it's at least in sync with the autotools
build and only one file has to be edited for releases.

cairo-ft.h includes fontconfig.h when CAIRO_HAS_FC_FONT is defined, so
it must appear in the pc file and the corresponding
declare_dependency(). This fix build issue in harfbuzz when cairo and
fontconfig are built as subproject.

When cairo is a subproject and application uses libcairogobject_dep, it
was missing include directories set in libcairo_dep.

Also override each dependency so they can be used when cairo is used as
subproject.

trace-to-xml.c needs cairo-xml.h which is only available when
CAIRO_HAS_XML_SURFACE feature is built which is only available when both
zlib and png are found. CAIRO_HAS_INTERPRETER only requires zlib.

Android NDK does not contain execinfo.h so malloc-stats.c cannot be
built.

It was originally added to make bisecting easier,
but has outlived its usefuleness now.

Going forward we'll have just a single cairo-version.h
header file, the one with the real version numbers.

This is needed to fix the case where cairo is being
built as a Meson subproject, but also simplifies
things in general.

Fixes #421

rework the whole CI setup to take advantage of citemplates
for building managing the docker images.

also add a meson build job and rework the ccache config to be
shared across autotools and meson. The jobs will not share ccache
artifacts though.

https://who-t.blogspot.com/2020/03/its-templates-all-way-down.html

So that people can build with Meson when using the tarballs.

Fixes #424

.. such as config.h or other generated files such as cairo-features.h,
as those might be accidentally included by the meson build and cause
weird to debug build issues.

Fixes #423

Including sys/poll.h when poll.h is available produces a compile
warning on some systems, but only sys/poll.h is present on others
such as AIX. This makes sure the most suitable poll.h is included
in each situation.
Signed-off-by: George Matsumura <gmmatsumura01@bvsd.org>

'make check' currently fails with the following in src/test-suite.log
(how can one tell automake not to hide the error message in a file?!?):

FAIL: check-doc-syntax.sh
=========================

Checking documentation for incorrect syntax
./cairo-cogl-surface.c: * cairo_cogl_pipeline_ts. On failure, both pointers will be set to
./cairo-cogl-surface.c:/* Mostly taken from cairo_vg_surface.c */
Error: some function names in the docs are not followed by parentheses.
Fix this by searching for the following regexp in the above files:
	'^[^:]*:[/ ][*]\(\|[ 	].*\)\([^#']\|^\)\<\(cairo_[][<>/0-9a-z_]*\>[^][<>(]\)'
FAIL check-doc-syntax.sh (exit status: 1)

This commit silences that. The fix is likely not correct, but since
these are normal comments and not actual doc comments, it does not
matter much.
Signed-off-by: Uli Schlachter <psychon@znc.in>

This commit makes the test suite pass by simply ignoring failures. Not
pretty, but better than teaching people to just ignore CI failures. At
least some kinds of problems can still be caught.

Originally, I wanted to only run a single test, but while investigating
how to do this, I stumbled upon this undocumented environment variable.
This seems less ugly and might allow looking at older build logs to
figure out when something first broke.
Signed-off-by: Uli Schlachter <psychon@znc.in>

This ensures that build configuration for the cogl backend will fail
if an insufficiently new version of cogl is present, making it easier
to find the root cause of a build failure.
Signed-off-by: George Matsumura <gmmatsumura01@bvsd.org>

rsvg_handle_close is no longer required after creating a handle with
rsvg_handle_new_from_file. It causes a deprecation warning during
compilation as well. This change removes it.
Signed-off-by: George Matsumura <gmmatsumura01@bvsd.org>

This constitutes few fixes that are necessary to compile correctly
and reduce errors when using musl libc.
Signed-off-by: George Matsumura <gmmatsumura01@bvsd.org>

Add the missing file which is necessary when symbol lookup is enabled.