$ brew install kira
==> Installing kira from tueda/loops
==> Downloading https://www.physik.hu-berlin.de/de/pep/tools/kira-1.0.tar.gz
Already downloaded: /Users/rds/Library/Caches/Homebrew/kira-1.0.tar.gz
==> ./configure --prefix=/usr/local/Cellar/kira/1.0 --disable-silent-rules
==> make
Last 15 lines from /Users/rds/Library/Logs/Homebrew/kira/02.make:
In file included from connect2kira.cpp:21:
In file included from ./connect2kira.h:20:
./integral.h:19:10: fatal error: 'omp.h' file not found
#include <omp.h>
         ^~~~~~~
1 error generated.
make[2]: *** [kira-connect2kira.o] Error 1
In file included from createSeeds.cpp:19:
./integral.h:19:10: fatal error: 'omp.h' file not found
#include <omp.h>
         ^~~~~~~
1 error generated.
make[2]: *** [kira-createSeeds.o] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/tueda/homebrew-loops/issues

make[3]: *** No rule to make target 'ninjago_module.mod', needed by 'all-am'.  Stop.

Run-time dependency firefly found: NO (tried pkgconfig and cmake)
Looking for a fallback subproject for the dependency firefly

|Executing subproject firefly method meson

Run-time dependency firefly found: NO (tried pkgconfig and cmake)
Not looking for a fallback subproject for the dependency firefly because:
Use of fallback dependencies is disabled.

../meson.build:86:2: ERROR: Dependency 'firefly' not found and fallback is disabled

A full log can be found at /tmp/kira-20200917-25681-nf3did/kira-2.0/build/meson-logs/meson-log.txt

Cloning into '/usr/local/Homebrew/Library/Taps/tueda/homebrew-loops'...
remote: Enumerating objects: 40, done.
remote: Counting objects: 100% (40/40), done.
remote: Compressing objects: 100% (38/38), done.
remote: Total 40 (delta 7), reused 7 (delta 1), pack-reused 0
Unpacking objects: 100% (40/40), done.
Error: Invalid formula: /usr/local/Homebrew/Library/Taps/tueda/homebrew-loops/kira.rb
kira: "cxx14" is not a recognized standard
Error: Cannot tap tueda/loops: invalid syntax in tap!

HOMEBREW_VERSION: 2.1.2
ORIGIN: https://github.com/Homebrew/brew
HEAD: 4025eadc2c3b9b71aa7029d7ddc6ede1cb88d482
Last commit: 6 days ago
Core tap ORIGIN: https://github.com/Homebrew/homebrew-core
Core tap HEAD: 61dcad8957f771f042da0ed4d227dd82ad52f6d3
Core tap last commit: 9 hours ago
HOMEBREW_PREFIX: /usr/local
CPU: quad-core 64-bit skylake
Homebrew Ruby: 2.3.7 => /System/Library/Frameworks/Ruby.framework/Versions/2.3/usr/bin/ruby
Clang: 10.0 build 1001
Git: 2.20.1 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 7.54.0 => /usr/bin/curl
macOS: 10.14.4-x86_64
CLT: 10.2.1.0.1.1554506761
Xcode: 10.2.1
CLT headers: 10.2.1.0.1.1554506761

$ brew audit --strict ./*.rb
chaplin:
  * C: 7: col 3: :fortran is deprecated. Usage should be "gcc".
epsilon-tools:
  * Head-only (no stable download)
fiesta:
  * C: 15: col 3: :mpi is deprecated. Usage should be "open-mpi".
fire:
  * C: 37: col 5: Use the double pipe equals operator `||=` instead.
[email protected]:
  * C: 17: col 3: :python is deprecated. Usage should be "python".
gosam:
  * C: 15: col 3: :python is deprecated. Usage should be "python".
gosam-contrib:
  * C: 12: col 3: :fortran is deprecated. Usage should be "gcc".
libfermat:
  * Head-only (no stable download)
qgraf:
  * C: 9: col 3: :fortran is deprecated. Usage should be "gcc".
reduze:
  * C: 14: col 3: :mpi is deprecated. Usage should be "open-mpi".
  * Dependency open-mpi does not define option :cxx
singular:
  * C: 18: col 3: :python is deprecated. Usage should be "python".
Error: 12 problems in 11 formulae

[100%] Built target Fermat
/Applications/Xcode.app/Contents/Developer/usr/bin/make -f CMakeFiles/fermat.dir/build.make CMakeFiles/fermat.dir/depend
make[2]: *** No rule to make target `CMakeFiles/fermat.dir/depend'.  Stop.
make[1]: *** [CMakeFiles/fermat.dir/all] Error 2
make: *** [all] Error 2

/usr/local/include/ginac/ex.h:119:30: error: member reference type 'ptr<GiNaC::basic>' is not a pointer; did you mean to use '.'?
        ex evalf() const { return bp->evalf(); }
                                  ~~^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
make[2]: *** [reduze/CMakeFiles/reduze.dir/crossing.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
20 errors generated.
make[2]: *** [reduze/CMakeFiles/reduze.dir/combinatorics.cpp.o] Error 1
20 errors generated.
make[2]: *** [reduze/CMakeFiles/reduze.dir/color.cpp.o] Error 1
20 errors generated.
make[2]: *** [reduze/CMakeFiles/reduze.dir/amplitude.cpp.o] Error 1
make[1]: *** [reduze/CMakeFiles/reduze.dir/all] Error 2
make: *** [all] Error 2