homebrew - Is there a way I can find what HOMEBREW_CC/XX was set to when I installed a package -


some of i'm doing compiler dependent. possible check if, example, boost formula installed gcc-4.9 or clang compiler?

what i'm looking might this:

$ echo homebrew_cc  $ brew install boost $ <comand>     built clang $ brew uninstall --force boost $ export homebrew_cc = gcc-4.9 ;  export homebrew_cxx = g++-4.9 $ brew install boost $ <command>     built gcc-4.9

the compiler listed in receipt

$ cat /usr/local/cellar/boost/1.58.0/install_receipt.json  {"used_options":["--c++11","--with-mpi","--without-single"],"unused_options":["--universal","--with-icu4c","--without-static"],"built_as_bottle":false,"poured_from_bottle":false,"time":1437512231,"head":"1d7b6215cbe7d690e961f1a72f497a58c95f6de4","stdlib":"libstdcxx","compiler":"gcc-5","source":{"path":"/usr/local/library/formula/boost.rb","tap":"homebrew/homebrew"}}~

..although hacked solution

diff --git a/library/homebrew/formula.rb b/library/homebrew/formula.rb index bf11af0..1c1caf3 100644 --- a/library/homebrew/formula.rb +++ b/library/homebrew/formula.rb @@ -774,7 +774,9 @@ class formula            "version" => keg.version.to_s,            "used_options" => tab.used_options.as_flags,            "built_as_bottle" => tab.built_bottle, -          "poured_from_bottle" => tab.poured_from_bottle +          "poured_from_bottle" => tab.poured_from_bottle, +          "cc_compiler" => tab.cc_compiler, +          "cxx_compiler" => tab.cxx_compiler          }        end  diff --git a/library/homebrew/tab.rb b/library/homebrew/tab.rb index 37b0db2..de0fe11 100644 --- a/library/homebrew/tab.rb +++ b/library/homebrew/tab.rb @@ -182,6 +182,16 @@ class tab < openstruct    end     def to_json +  if env['homebrew_cc'] +    cc_compiler = env['homebrew_cc'] +  else +    cc_compiler = "clang" +  end +  if env['homebrew_cxx'] +    cxx_compiler = env['homebrew_cxx'] +  else +    cxx_compiler = "clang"  +  end      attributes = {        "used_options" => used_options.as_flags,        "unused_options" => unused_options.as_flags, @@ -192,6 +202,8 @@ class tab < openstruct        "stdlib" => (stdlib.to_s if stdlib),        "compiler" => (compiler.to_s if compiler),        "source" => source, +      "cc_compiler" => cc_compiler, +      "cxx_compiler" => cxx_compiler        }       utils::json.dump(attributes)

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