Switched the GTK frontend build logic to select GTK2/GTK3 dependencies and emit corresponding preprocessor defines.
Added GTK3 GtkGrid/alignment handling and GTK3 GtkBox replacements for the channel list controls while preserving GTK2 table behavior behind guards.
Switched the ban list layout to use GtkGrid under GTK3 with GTK2 table fallback for checkbox placement.
Updated main GTK UI layouts to use GTK3 GtkGrid/GtkBox and alignment/attachment logic (quit dialog, topic bar, search/entry, chanview placement, main window table) while keeping GTK2 behavior via HAVE_GTK3 guards.
Windows builds of the GTK frontend use the pie flag to compile
hexchat.exe. Windows needs an explicit entrypoint when compiling with
--pie, otherwise an invalid executable is created.
This sets the entrypoint of the executable on Windows (as it is
currently set in the Visual Studio project files).
This fixes a critical build issue which prevents all Windows builds
using Meson from working.
Quick rundown of benefits:
- Much faster:
- Autotools (with autogen): 22 seconds
- Meson: 7 seconds
- Meson (with ccache): 2 seconds
- Simpler:
- ~1000 lines smaller
- Single simple language
- Potentially better Windows (Visual Studio) support
What is not done:
- Complete Windows support
- OSX support (easy)
Closes#2013Closes#1937Closes#1803
