gotk4

gotk4 copied to clipboard

Usually cgo usually compiles correctly with these environment variables

CC="clang -target x86_64-w64-mingw32-gcc"
CGO_ENABLED=1
GOOS=windows
GOARCH=amd64

But when I compile the program I get this

$ go build -v gtk4/simple/main.go
github.com/diamondburned/gotk4/pkg/core/gbox
# github.com/diamondburned/gotk4/pkg/core/intern
In file included from _cgo_export.c:4:
cgo-gcc-export-header-prolog:54:35: warning: redeclaration of 'goToggleNotify' should not add 'dllexport' attribute [-Wdll-attribute-on-redeclaration]
intern.go:7:14: note: previous declaration is here
# github.com/diamondburned/gotk4/pkg/core/gbox
In file included from _cgo_export.c:4:
cgo-gcc-export-header-prolog:49:35: error: conflicting types for 'callbackDelete'
box.go:6:14: note: previous declaration is here
_cgo_export.c:26:28: error: conflicting types for 'callbackDelete'
box.go:6:14: note: previous declaration is here

I get almost the same error with gcc

First I thought it was something about missing mingw-gtk dependencies, but in a docker container with those dependencies I get the same error.

I get the same error as this issue but the difference is that I am on a 64 bit architecture.

I was getting the same error, though I've had some success with

PKG_CONFIG_PATH=/usr/x86_64-w64-mingw32/sys-root/mingw/lib/pkgconfig
CGO_ENABLED=1
GOOS=windows
CC="x86_64-w64-mingw32-gcc"
go build -v -ldflags -H=windowsgui

taken from here but now I am getting the errors below:

main
# main
/usr/lib/golang/pkg/tool/linux_amd64/link: running x86_64-w64-mingw32-gcc failed: exit status 1
/usr/lib/gcc/x86_64-w64-mingw32/13.2.1/../../../../x86_64-w64-mingw32/bin/ld: cannot find -ladwaita-1: No such file or directory
/usr/lib/gcc/x86_64-w64-mingw32/13.2.1/../../../../x86_64-w64-mingw32/bin/ld: cannot find -lgirepository-1.0: No such file or directory
/usr/lib/gcc/x86_64-w64-mingw32/13.2.1/../../../../x86_64-w64-mingw32/bin/ld: cannot find -lgirepository-1.0: No such file or directory
/usr/lib/gcc/x86_64-w64-mingw32/13.2.1/../../../../x86_64-w64-mingw32/bin/ld: cannot find -lgirepository-1.0: No such file or directory
collect2: error: ld returned 1 exit status

After going on a hunt to find the required packages I found the needed files here. The mingw packages for libadwaita and and gobject-introspection do not seem to exist for Fedora.

After placing the package in the appropriate location I managed to compile my app.

As a small sidenote: bcryptprimitives.dll was missing when I tried to run the app with Wine. It appears, this dll is only included with Wine 9 and seems to be required see here.

After going on a hunt to find the required packages I found the needed files here.

How did you install the corresponding packages?

I didn't have any problem with libadwaita after extracting the .tar.zst file in /usr/x86_64-w64-mingw32/

But with gobject-introspection it was not the case...

github.com/diamondburned/gotk4/pkg/core/gerror
# github.com/diamondburned/gotk4/pkg/core/gerror
# [pkg-config --cflags  -- glib-2.0 gobject-introspection-1.0]
Package gobject-introspection-1.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gobject-introspection-1.0.pc'
to the PKG_CONFIG_PATH environment variable
Package 'gobject-introspection-1.0', required by 'virtual:world', not found

So I decided to do this:

find /usr/x86_64-w64-mingw32/ -name "gobject-introspection-1.0.pc"
# /usr/x86_64-w64-mingw32/lib/pkgconfig/gobject-introspection-1.0.pc
ln /usr/x86_64-w64-mingw32/lib/pkgconfig/gobject-introspection-1.0.pc /usr/x86_64-w64-mingw32/sys-root/mingw/lib/pkgconfig

But I get this error

github.com/diamondburned/gotk4/pkg/core/gerror
# github.com/diamondburned/gotk4/pkg/core/gerror
# [pkg-config --cflags  -- glib-2.0 gobject-introspection-1.0]
Package dependency requirement 'glib-2.0 >= 2.78.0' could not be satisfied.
Package 'glib-2.0' has version '2.77.1', required version is '>= 2.78.0'
Package dependency requirement 'gobject-2.0 >= 2.78.0' could not be satisfied.
Package 'gobject-2.0' has version '2.77.1', required version is '>= 2.78.0'

But I fixed it by modifying the file /usr/x86_64-w64-mingw32/lib/pkgconfig/gobject-introspection-1.0.pc

Changing these lines from this: Requires: glib-2.0 >= 2.78.0, gobject-2.0 >= 2.78.0 to this Requires: glib-2.0 >= 2.77.1, gobject-2.0 >= 2.77.1

I just want to know how safe it is to do that, or if the program will even work?

Or if I downloaded a wrong package that's why I had to do all the extra processing?

I leave this to leave more or less documented the process of how to get to this... in theory you just have to download and extract these 3 packages in /usr/x86_64-w64-mingw32/

• gobject-introspection
• gobject-introspection-runtime
• libadwaita

And install these packages through dnf

• mingw64-gtk4
• mingw64-gcc
• zstd (To extract the packages)

Right now I already have a docker image to be able to automate it so... it would already be

Why not use MSYS2?

Why not use MSYS2?

MSYS2 compiles for Windows on Windows, mingw32 compiles for Windows on Linux. Running a separate machine/VM with windows, specially in a CI environment, is extra hassle which can be avoided by just cross-compiling.

Oh, interesting. That's a use case that I've never considered, unfortunately.