shiny/driver/gldriver: define GL_SILENCE_DEPRECATION

The OpenGL API has been deprecated on macOS as of version 10.14.¹
Building gldriver on macOS 10.14 produces warnings such as:

	# golang.org/x/exp/shiny/driver/gldriver
	cgo-gcc-prolog:117:2: warning: 'glBindVertexArray' is deprecated: first deprecated in macOS 10.14 - OpenGL API deprecated. (Define GL_SILENCE_DEPRECATION to silence these warnings) [-Wdeprecated-declarations]
	/Applications/Xcode.app/.../gl3.h:2360:21: note: 'glBindVertexArray' has been explicitly marked deprecated here
	cocoa.m:35:2: warning: 'NSOpenGLContext' is deprecated: first deprecated in macOS 10.14 - Please use Metal or MetalKit. [-Wdeprecated-declarations]
	/Applications/Xcode.app/.../NSOpenGL.h:202:12: note: 'NSOpenGLContext' has been explicitly marked deprecated here
	...

The package is named gldriver, so it would be too drastic of a change
for it to stop using OpenGL. Also, OpenGL is not deprecated on all
other platforms that package gldriver supports.

Despite being deprecated, OpenGL is not removed from macOS 10.14 at this
time. It's not helpful for the warnings to be shown to users who are
building and using the package on macOS, so, simply acknowledge the
deprecation notice by defining GL_SILENCE_DEPRECATION and silence the
warnings.

It should also help with x/exp builds passing on https://build.golang.org,
because warnings are promoted to errors in trybots (to help catch issues
such as this one).

References:

¹ https://developer.apple.com/documentation/macos_release_notes/macos_mojave_10_14_release_notes?language=objc#3035786

Updates golang/go#11811

Change-Id: Ie86d03a44c3cdb7aca3ff255bbf7a71926d14025
Reviewed-on: https://go-review.googlesource.com/c/exp/+/171033
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1 file changed
tree: a073fe04598fe03800c1ef561aa7196ce97cc5b6
  1. .gitattributes
  2. .gitignore
  3. AUTHORS
  4. CONTRIBUTING.md
  5. CONTRIBUTORS
  6. LICENSE
  7. PATENTS
  8. README.md
  9. apidiff/
  10. cmd/
  11. codereview.cfg
  12. ebnf/
  13. ebnflint/
  14. errors/
  15. fsnotify/
  16. go.mod
  17. go.sum
  18. inotify/
  19. io/
  20. mmap/
  21. notary/
  22. old/
  23. rand/
  24. shiny/
  25. shootout/
  26. utf8string/
  27. winfsnotify/
README.md

exp

This subrepository holds experimental and deprecated (in the old directory) packages.

The idea for this subrepository originated as the pkg/exp directory of the main repository, but its presence there made it unavailable to users of the binary downloads of the Go installation. The subrepository has therefore been created to make it possible to go get these packages.

Warning: Packages here are experimental and unreliable. Some may one day be promoted to the main repository or other subrepository, or they may be modified arbitrarily or even disappear altogether.

In short, code in this subrepository is not subject to the Go 1 compatibility promise. (No subrepo is, but the promise is even more likely to be violated by go.exp than the others.)

Caveat emptor.