mac: build.yaml debugging

.github/workflows/build.yaml

@@ -296,9 +296,16 @@ jobs:
           done
 
       - name: check
-        timeout-minutes: 40
+        timeout-minutes: 20
         run: |
+          # this check seems to hang intermittently at this point, before
+          # printing the IFS statement and before running any 'make demos'.
+          # Adding some debug echo statements here:
+          echo "::group::Starting check (1)"
+          echo "::endgroup::"
+          echo "::group::Starting check (2)"
           IFS=':' read -r -a libs <<< "${CHECK_LIBS_MAC}"
+          echo "::endgroup::"
           for lib in "${libs[@]}"; do
             printf "::group::   \033[0;32m==>\033[0m Checking library \033[0;32m${lib}\033[0m\n"
             cd ${GITHUB_WORKSPACE}/${lib}

LAGraph/Makefile

@@ -77,7 +77,7 @@ verbose_test: library
 	( cd build && ctest . --verbose || ctest . --rerun-failed --output-on-failure )
 
 # target used in CI
-demos: test
+demos: verbose_test
 
 # just compile after running cmake; do not run cmake again
 remake: