Formula 'Valgrind' does not work on macOS using Darwin version 18.6.0

[wtsegars]

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• [ ] ran brew update and can still reproduce the problem?
• [ ] ran brew doctor, fixed all issues and can still reproduce the problem?
• [ ] ran brew gist-logs <formula> (where <formula> is the name of the formula that failed) and included the output link?
• [ ] if brew gist-logs didn't work: ran brew config and brew doctor and included their output with your issue?

What you were trying to do (and why)

What happened (include command output)

I got an output from the terminal that stated that Valgrind only works with macOS using Darwin versions 10.x - 17.x.

Command output

$ brew install --HEAD valgrind
Updating Homebrew...
==> Auto-updated Homebrew!
Updated Homebrew from 5b126ec85 to 3317b0052.
Updated 3 taps (homebrew/core, homebrew/cask and sass/sass).
==> New Formulae
bic                        gh                         libfido2
cargo-instruments          iblinter
==> Updated Formulae
readline ✔          ed                  jenkins             pgweb
aws-okta            ensmallen           mahout              pulumi
balena-cli          exploitdb           micronaut           renameutils
bazel               fastlane            minio               sass/sass/migrator
bind                fetchmail           minio-mc            skaffold
byobu               ffuf                mmark               sn0int
carrot2             flow                monetdb             teleport
circleci            glooctl             ncurses             topgrade
crystal-icr         helm                nifi                typescript
detekt              helmfile            ode                 weechat
devspace            hugo                opa                 yq

==> Cloning git://sourceware.org/git/valgrind.git
Updating /Users/steelwind/Library/Caches/Homebrew/valgrind--git
From git://sourceware.org/git/valgrind
   40ab2f1..6f8920f  master     -> origin/master
==> Checking out branch master
Already on 'master'
Your branch is behind 'origin/master' by 1 commit, and can be fast-forwarded.
  (use "git pull" to update your local branch)
HEAD is now at 6f8920f PPC64, fix for alignment of the rt_sigframe data structure.
==> ./autogen.sh
==> ./configure --prefix=/usr/local/Cellar/valgrind/HEAD-6f8920f --enable-only64
Last 15 lines from /Users/steelwind/Library/Logs/Homebrew/valgrind/02.configure:
checking for gcc-ar... no
checking for perl... /usr/bin/perl
checking for gdb... /no/gdb/was/found/at/configure/time
checking dependency style of clang... none
checking for diff -u... yes
checking for clang option to accept ISO C99... none needed
checking for a supported version of gcc... ok (Apple LLVM version 10.0.1)
checking build system type... x86_64-pc-darwin
checking host system type... x86_64-pc-darwin
checking for a supported CPU... ok (x86_64)
checking for a 64-bit only build... yes
checking for a 32-bit only build... no
checking for a supported OS... ok (darwin)
checking for the kernel version... unsupported (18.6.0)
configure: error: Valgrind works on Darwin 10.x, 11.x, 12.x, 13.x, 14.x, 15.x, 16.x and 17.x (Mac OS X 10.6/7/8/9/10/11 and macOS 10.12/13)

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

  

What you expected to happen

It was supposed to updated Valgrind so that I can be used on the command line for macOS 10 Mojave.

Step-by-step reproduction instructions (by running brew install commands)

I followed these instructions here:

https://www.gungorbudak.com/blog/2018/04/28/how-to-install-valgrind-on-macos-high-sierra/

[SMillerDev]

As you can tell by the title there, that guide isn't for macOS 10.14/Mojave. There's also nothing homebrew can do about this, the best option is to work with the valgrind developers to add support for mojave.