Even clang-cl (the wrapper for MSVC) can't work with GNU C++.
So, let's use the ISO one.
As a result, we now set math.h/cmath defines on Windows builds.
This should be unnecessary since GExiv2 did the break properly by
renaming files (making it possible to install side-by-side an older
version of GExiv2 and a newer version). But some packagers are wrongly
renaming the .pc file, tricking our build system into accepting the
newer incompatible libgexiv2.
So let's add an additional test, explicitly forbidding newer GExiv2.
We'll move on to the new version when we'll be ready. For the time
being, there is a reason why files were renamed and packagers should not
force incompatible versions to fit.
I discover GLIB_VERSION_MIN_REQUIRED and GLIB_VERSION_MAX_ALLOWED. The
former will make so that we won't have deprecation warnings anymore if
ever we use a function which has been deprecated recently (as long as it
was not deprecated at the minimum required version). The latter will
make so that we get deprecation warnings for any function added after
the minimum required version.
Note that ideally both should be at the same version, but since we have
a bunch of GLIB_CHECK_VERSION() protected conditional code, we would get
compilation warnings even on correctly protected code. So just keep the
small discrepancy until we can finally bump our minimum requirement.
Also add the equivalent macros for GTK/GDK.
While I checked that all the "main" downstreamers make use of it
(ArchLinux, Fedora, Ubuntu, Debian, Ubuntu, MSYS2, macports),
it is so hidden that we can't guarantee anyone will
actually see it in the future in the middle of many lines.
MSYS2 provides the same needed library so let's just find it properly.
Note: even when we do have MSVC support we should never hardcode .build
files. Setting paths to be searched on MSVC is the job of LIB env var.
By default, it is evaluated to CodeView since this is the format we
use on .exe installer and .msix for many reasons (see git log).
However, some people may not use standard debugging tools for
Windows but, for example, GDB, so they need DWARF symbols since
GDB debugger (and the GCC toolchain) have limited Windows support.
The following things were broken:
* Remove gdk-pixbuf-2.0/ from gdk-pixbuf include (this is part of the -I
directory in the pkg-config data).
* Properly free the allocated AsMetadata which were leaked (while the
AsComponent was freed mistakenly since it belongs to the AsMetadata).
* Properly free GFile as a GObject (it must not be freed with g_free()!).
* Fix various coding style bugs.
* Fix installing a .gex file by dropping it in GIMP. The code in
file_gex_validate() was completely broken as it was not parsing the
AppStream metadata anymore.
* Mininum libappstream requirement moved down to 0.16.1 so that GIMP can
be built on Debian bookworm (our dependency baseline).
* Fix Snap build (hopefully, untested).
From the horse's mouth:
"WARNING: appstream-glib is heavy maintenance mode, use appstream
instead"
Additionally, appstream-glib no longer conforms fully to the
appstream specification.
Some care is taken to taken to support both libappstream 1.0 as well
as libappstream 0.16.x to support stable distros.
Thanks to lazka and the whole MSYS2 project for adding this package to
their repository so that we don't need ugly special-casing anymore.
See: e515fe48bc
The MyPaintSurface2 interface got added with libmypaint 1.5.0.
Also mypaint-brushes 2.0.2 release notes explicitly say:
> The v2.0.x brushes (in general) require libmypaint >= 1.5 to work correctly / not crash.
(cf. https://github.com/mypaint/mypaint-brushes/releases/tag/v2.0.2)
Since Debian bookworm ships with libmypaint 1.5.1, this is fine to bump
this requirement.
Note: there is still some discrepancy lying around with Windows x86
(32-bit) still using mypaint-brushes-1.0 but apparently these older
brushes still work fine with the new API, and Alx will ask the MSYS2
project if we can have a mypaint-brushes-2.0 package for x86 too.
This patch ports our MyPaint code to use the
MyPaintSurface2 API, allowing us to support
version 2 MyPaint Brushes correctly.
The API update lets us take into account
the zoom factor and rotation of the canvas
when drawing. It also adds a "Gain" option
to the GUI in order to control the strength
of the input's pressure (tablet or mouse).
As a caveat, this patch does not yet
implement spectral/pigment blending.
This fixes some "illegal variable" noise in the build. There can't
be any dynamically created environment files in the *source* directory,
but there may be in the *build* directory we're modifying.
We need the gir and plugins to be able to generate the splash image(s).
Add those as dependencies to gimp executable to ensure they are there
when needed.
Fixes: https://gitlab.gnome.org/GNOME/gimp/-/issues/13657
