Re: [gtk-osx-devel] Building gtk+3 on macOS - libepoxy problem

[John Ralls <jralls ceridwen us>]

> On Nov 3, 2016, at 2:14 PM, Марко М. Костић <marko m kostic gmail com> wrote:
>
> Hi everyone.
>
> First time trying to build gtk+3 on macOS 10.12.1 via jhbuild. I've bootstraped jhbuild environment using
> the instructions on the page https://wiki.gnome.org/Projects/GTK+/OSX/Building.
>
> The building process was something like this:
> echo 'export PATH=$PATH:/Users/MYUSERONMACOS/.local/bin' >> ~/.bash_profile
> source ~/.bash_profile
> curl https://git.gnome.org/browse/gtk-osx/plain/gtk-osx-build-setup.sh -o gtk-osx-build-setup.sh
> sh ./gtk-osx-build-setup.sh
> echo 'build_policy = "updated-deps"' >> ~/.jhbuildrc-custom
> jhbuild bootstrap
> jhbuild update meta-gtk-osx-bootstrap meta-gtk-osx-core meta-gtk-osx-gtk3
> jhbuild build --no-network meta-gtk-osx-bootstrap meta-gtk-osx-core meta-gtk-osx-gtk3
>
> Everything was fine and building until jhbuild started building libepoxy. It was failing to build due to
> undefined symbols. The output follows:
>
> *** Building libepoxy *** [33/43]
> make -j 3
> /Applications/Xcode.app/Contents/Developer/usr/bin/make  all-recursive
> Making all in include/epoxy
> make[2]: Nothing to be done for `all'.
> Making all in src
> cp ./../include/epoxy/config.h.guess ./../include/epoxy/config.h
> .././install-sh -c -d ../include/epoxy
>  GEN      glx_generated_dispatch.c
>  GEN      egl_generated_dispatch.c
>  GEN      gl_generated_dispatch.c
>  GEN      wgl_generated_dispatch.c
> /Applications/Xcode.app/Contents/Developer/usr/bin/make  all-am
>  CC       dispatch_common.lo
>  CC       gl_generated_dispatch.lo
>  CCLD     libepoxy.la
> Undefined symbols for architecture x86_64:
>  "_epoxy_eglGetCurrentContext", referenced from:
>      _epoxy_egl_get_current_gl_context_api in dispatch_common.o
>      _epoxy_get_bootstrap_proc_address in dispatch_common.o
>  "_epoxy_eglGetCurrentDisplay", referenced from:
>      _epoxy_egl_get_current_gl_context_api in dispatch_common.o
>      _epoxy_get_bootstrap_proc_address in dispatch_common.o
>  "_epoxy_eglGetProcAddress", referenced from:
>      _epoxy_get_proc_address in dispatch_common.o
>  "_epoxy_eglQueryContext", referenced from:
>      _epoxy_egl_get_current_gl_context_api in dispatch_common.o
>      _epoxy_get_bootstrap_proc_address in dispatch_common.o
> ld: symbol(s) not found for architecture x86_64
> clang: error: linker command failed with exit code 1 (use -v to see invocation)
> make[3]: *** [libepoxy.la] Error 1
> make[2]: *** [all] Error 2
> make[1]: *** [all-recursive] Error 1
> make: *** [all] Error 2
> *** Error during phase build of libepoxy: ########## Error running make -j 3  *** [33/43]
>
> I think that the cause of this problem is the usage of clang compilers/linkers (from XCode 8.1) instead
> of using gcc for this but I am not sure because I'm new to macOS ecosystem.
>
> Any tips on how to resolve this issue and compile libepoxy sucessfully under macOS 10.12.1?

libepoxy master seems to default to EGL, which is of course not present. I got it to build by opening a shell 
and saying:
  git reset --hard
  git clean -fdx
  git checkout -b libepoxy-1.3 v1.3
and then re-running configure. I'll push a change later to do this in the moduleset.

Regards,
John Ralls