can't compile on mojave—32bit support dropped

[selfagency]

➜ brew install grv
==> Downloading https://github.com/rgburke/grv/releases/download/v0.2.0/grv-0.2.0-src.tar.gz
==> Downloading from https://github-production-release-asset-2e65be.s3.amazonaws.com/102900463/a1219f96-78c7-11e8-9bde-3149ffaf93b5?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20180927%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20180927T192927
######################################################################## 100.0%
==> make build-only
Last 15 lines from /Users/daniel/Library/Logs/Homebrew/grv/01.make:
  "_set_menu_spacing", referenced from:
      __cgo_eed8f6ed3399_Cfunc_set_menu_spacing in _x006.o
     (maybe you meant: __cgo_eed8f6ed3399_Cfunc_set_menu_spacing)
  "_set_menu_sub", referenced from:
      __cgo_eed8f6ed3399_Cfunc_set_menu_sub in _x006.o
     (maybe you meant: __cgo_eed8f6ed3399_Cfunc_set_menu_sub)
  "_set_menu_win", referenced from:
      __cgo_eed8f6ed3399_Cfunc_set_menu_win in _x006.o
     (maybe you meant: __cgo_eed8f6ed3399_Cfunc_set_menu_win)
  "_unpost_menu", referenced from:
      __cgo_eed8f6ed3399_Cfunc_unpost_menu in _x006.o
     (maybe you meant: __cgo_eed8f6ed3399_Cfunc_unpost_menu)
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [build-only] Error 2

READ THIS: https://docs.brew.sh/Troubleshooting

you can see there ld: symbol(s) not found for architecture x86_64

mojave is 64-bit only so that may be the source of the issue

[rgburke]

Thanks for reporting this issue. GRV was failing to build on Mojave due to the issues discussed here: Homebrew/homebrew-core/pull/32533

Homebrew has been updated with a new release of GRV which should now build successfully on Mojave. Please try running brew install grv again.