Golang and GUI toolkits on FreeBSD

[Waitman Gobble]

On Tue, Feb 17, 2015 at 11:42 PM, Waitman Gobble <gobble.wa at gmail.com> wrote:
> On Tue, Feb 17, 2015 at 11:25 PM, Waitman Gobble <gobble.wa at gmail.com> wrote:
>> On Tue, Feb 17, 2015 at 11:20 PM, Sam Fourman Jr. <sfourman at gmail.com> wrote:
>>>
>>>
>>>> Its curious that CXX is set to g++, but the c compiler is set to cc
>>>> defaulting to clang.. sounds yucky to me.
>>>>
>>>> is your include and lib path set right?
>>>
>>>
>>> I am not sure how to find the path settings, what command would I run?
>>>
>>>
>>>
>>> --
>>>
>>> Sam Fourman Jr.
>>
>> # pkg info | grep gtk
>> gio-sharp-2.22.3_1             GIO bindings not available in gtk-sharp
>> gqview-2.0.4_15                Another gtk2-based graphic file viewer
>> gtk-engines2-2.20.2_2          Theme engine for the GTK+-2.0 toolkit
>> gtk-sharp-beans-2.14.1_1       Extensions on top of GTK-sharp
>> gtk-sharp20-2.12.10_3          GTK+ and GNOME interfaces for the .NET runtime
>> gtk-update-icon-cache-2.24.25  Gtk-update-icon-cache utility from the
>> Gtk+ toolkit
>> gtk-xfce-engine-3.0.1_1        Xfce gtk theme engine
>> gtk12-1.2.10_24                Gimp Toolkit for X11 GUI (previous
>> stable version)
>> gtk2-2.24.25_1                 Gimp Toolkit for X11 GUI (previous
>> stable version)
>> gtk3-3.14.7                    Gimp Toolkit for X11 GUI (current stable version)
>> gtkmm24-2.24.4_2               C++ wrapper for Gtk+
>> gtkspell-2.0.16_5              GTK+ 2 spell checking component
>> libcanberra-gtk3-0.30_3        Implementation of the Freedesktop sound
>> theme spec
>> linux-f10-gtk2-2.14.7_5        GTK+ library, version 2.X (Linux Fedora 10)
>> py27-gtk2-2.24.0_3             Set of Python bindings for GTK+
>> webkit-gtk2-2.4.8              Opensource browser engine using the
>> GTK+ 2 toolkit
>> webkit-gtk3-2.4.8              Opensource browser engine using the
>> GTK+ 3 toolkit
>> wx28-gtk2-common-2.8.12_5      The wxWidgets GUI toolkit (common files)
>> wx28-gtk2-unicode-2.8.12_5     The wxWidgets GUI toolkit (Unicode)
>>
>>
>> # gtk-config --prefix --libs --cflags
>> /usr/local
>> -I/usr/local/include/gtk-1.2 -I/usr/local/include/glib-1.2
>> -I/usr/local/lib/glib/include -I/usr/local/include
>> -L/usr/local/lib -L/usr/local/lib -lgtk -lgdk -lgmodule -lglib -lintl
>> -lXi -lXext -lX11 -lm
>>
>>
>> I would presume that gtk3-config would exist? but it's not there. :)
>>
>> let me try the go thingy and see what happens over here.
>>
>>
>> --
>> Waitman Gobble
>> Los Altos California USA
>> 510-830-7975
>
> oh, duh. i see.
> #pkgconf --cflags gtk+-3.0
>
> I/usr/local/include/gtk-3.0 -I/usr/local/include/cairo
> -I/usr/local/include/pixman-1 -D_THREAD_SAFE
> -I/usr/local/include/gdk-pixbuf-2.0 -I/usr/local/include/libpng16
> -I/usr/local/include/atk-1.0 -I/usr/local/include/at-spi2-atk/2.0
> -I/usr/local/include/at-spi-2.0 -I/usr/local/include/dbus-1.0
> -I/usr/local/include/dbus-1.0/include -I/usr/local/include/pango-1.0
> -I/usr/local/include/freetype2 -I/usr/local/include/harfbuzz
> -I/usr/local/include/gio-unix-2.0/ -pthread
> -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include
> -I/usr/local/include
>
> # pkgconf --libs gtk+-3.0
> -lgtk-3 -lgdk-3 -lpangocairo-1.0 -lpango-1.0 -latk-1.0 -lcairo-gobject
> -lcairo -pthread -lgdk_pixbuf-2.0 -lgio-2.0 -lgobject-2.0
> -L/usr/local/lib -lglib-2.0 -lintl
>
> --
> Waitman Gobble
> Los Altos California USA
> 510-830-7975




ok, maybe this is now working? can you try..

# setenv GOPATH /usr/local
# go get github.com/andlabs/ui
(barfs with errors as you mentioned)

cd /usr/local/src/github.com/andlabs/ui

take a look at the cgo specs in uitask_unix.go for example:

// #cgo pkg-config: gtk+-3.0
// #cgo CFLAGS: --std=c99
// #include "gtk_unix.h"
// extern gboolean xdoissue(gpointer data);
import "C"

it's using pkg-config to get the CFLAGS, LDFLAGS etc.. so it should work.

I think there is an issue with cgo using 'cc' when it is undefined... try this?

# cd /usr/local/src/github.com/andlabs/ui
# setenv CC clang
# go build
(wait .. hey there are no more errors, YAY)

# cd examples/basicwindow
# go build
# ./basicwindow
* a window pops up *

OK so i think this is working with setenv CC clang (or use export
depending on your shell)

{ but I'd change your CXX to clang++ }

-- 
Waitman Gobble
Los Altos California USA
510-830-7975