From 32dac66d58e9b2a4e98406bfa1c58ff9ffec322e Mon Sep 17 00:00:00 2001
From: Richard Brooksby <rb@ravenbrook.com>
Date: Sun, 15 Jan 2023 14:07:44 +0000
Subject: [PATCH] Third attempt to use environment variables to select the
 compiler.

---
 mps/.github/workflows/build-and-test.yml | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/mps/.github/workflows/build-and-test.yml b/mps/.github/workflows/build-and-test.yml
index f13e4621f63..7e1b51ede2c 100644
--- a/mps/.github/workflows/build-and-test.yml
+++ b/mps/.github/workflows/build-and-test.yml
@@ -26,13 +26,17 @@ jobs:
         env:
           - CC: gcc
           - CC: clang
+      exclude:
+        - os: macos-latest
+          env:
+            - CC: gcc
 
     runs-on: ${{ matrix.os }}
 
     steps:
     - uses: actions/checkout@v3
     - name: configure
-      run: ./configure
+      run: CC=${{ matrix.env.cc }} ./configure
     - name: make
       run: make
     - name: make test