Make Gambit slowness message accurate

Closes #17118.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

1 files changed, 7 insertions, 4 deletions

diff --git a/Library/Formula/gambit-scheme.rb b/Library/Formula/gambit-scheme.rb
index c769760f1..91128e8a8 100644
--- a/Library/Formula/gambit-scheme.rb
+++ b/Library/Formula/gambit-scheme.rb
@@ -30,10 +30,13 @@ class GambitScheme < Formula
 
     unless ENV.compiler == :gcc
       opoo <<-EOS.undent
-        Compiling Gambit Scheme with Clang or LLVM-GCC takes a very long time.
-        If you have GCC, you can compile it much faster with:
-          brew install gambit-scheme --use-gcc
-        EOS
+        Gambit will build with GCC if an acceptable version is found on your
+        system, or Clang otherwise.  If it finds only Clang, the build will
+        take a very, very long time.  Programs built with Gambit after the
+        install may also tke a long time to compile.
+
+        You can remedy this by installing an apple-gcc* or gcc* package.
+      EOS
     end
 
     system "./configure", *args