Fixes compile bug for imgui v1.80

[RicoP]

No description provided.

[gallickgunner]

@RicoP - Thanks for the upgrade to 1.80. I think you forgot to update the submodule as well, maybe that's why travisCI is throwing build errors. Can you update the submodule as well?

[Gargaj]

The .yaml is gonna need imgui/backends/imgui_impl_opengl3.cpp and imgui/backends/imgui_impl_sdl.cpp added otherwise the builds will fail.

[RicoP]

The .yaml is gonna need imgui/backends/imgui_impl_opengl3.cpp and imgui/backends/imgui_impl_sdl.cpp added otherwise the builds will fail.

Thank you! I got a bit frustrated because I couldn't get it to run...

Now Linux builds fine but on mac there is still the error

Error:
homebrew-core is a shallow clone.
homebrew-cask is a shallow clone.
To `brew update`, first run:
git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-core fetch --unshallow
git -C /usr/local/Homebrew/Library/Taps/homebrew/homebrew-cask fetch --unshallow
These commands may take a few minutes to run due to the large size of the repositories.
This restriction has been made on GitHub's request because updating shallow
clones is an extremely expensive operation due to the tree layout and traffic of
Homebrew/homebrew-core and Homebrew/homebrew-cask. We don't do this for you
automatically to avoid repeatedly performing an expensive unshallow operation in
CI systems (which should instead be fixed to not use shallow clones). Sorry for
the inconvenience!
Failed during: /usr/local/bin/brew update --force --quiet

But I don't think that's my mistake 🤔

[Gargaj]

Yeah it's the Mac build running a deprecated Homebrew instaler: https://travis-ci.com/github/gallickgunner/ImGui-Addons/jobs/481090783#L88

[RicoP]

Yeah it's the Mac build running a deprecated Homebrew instaler: https://travis-ci.com/github/gallickgunner/ImGui-Addons/jobs/481090783#L88

Guess that would also fail on master anyway. Guess @gallickgunner can merge?

[gallickgunner]

Yeah it's the Mac build running a deprecated Homebrew instaler: https://travis-ci.com/github/gallickgunner/ImGui-Addons/jobs/481090783#L88

Thanks for the info. I really don't know how to make travis-ci work and I was hesitating to merge since I didn't have any other way to check if it'd work on other platforms. So how do I go about updating the Homebrew installer?

@RicoP - Yea, thanks for the contribution, merging for now since it's working on Linux.

[Gargaj]

According to https://docs.travis-ci.com/user/installing-dependencies/#installing-packages-on-macos you could just list the packages you want installed in the YAML.

[gallickgunner]

According to https://docs.travis-ci.com/user/installing-dependencies/#installing-packages-on-macos you could just list the packages you want installed in the YAML.

So in essence, I need to remove the before_install part from the macOS portion and replace it with

addons:
  homebrew:
    packages:
    - sdl2
    -glew
    update: true

[Gargaj]

And the Xcode version: #25