diff --git a/.github/workflows/build_all.yml b/.github/workflows/build_all.yml
index 16181b20..55b94090 100644
--- a/.github/workflows/build_all.yml
+++ b/.github/workflows/build_all.yml
@@ -38,8 +38,6 @@ jobs:
           tar zxf Xcode10.app.tar.gz
           rm -rf Xcode10.app.tar.gz
           sudo xcode-select --print-path
-          which ar
-          which ranlib
           sudo xcode-select -s $PWD/Xcode.app/Contents/Developer/
           echo "$PWD/Xcode.app/Contents/Developer/usr/bin" >> $GITHUB_PATH
           echo "$PWD/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/" >> $GITHUB_PATH
@@ -158,7 +156,11 @@ jobs:
             make AR=g++ BACKEND=cudastatic USERLINKOPT='lib/libzmat.a -Wl,-Bstatic -lgomp -Wl,-Bdynamic'
             ldd ../bin/mcx
           elif [[ "$RUNNER_OS" == "macOS" ]]; then
-            mkdir build && cd build && cmake .. -DCMAKE_AR=/usr/bin/ar -DCMAKE_RANLIB=/usr/bin/ranlib && make VERBOSE=1 && cd ..
+            ar --version
+            ranlib --version
+            ls -l `which ranlib`
+            ls -l `which ar`
+            mkdir build && cd build && cmake .. && make VERBOSE=1 && cd ..
             otool -L ../bin/mcx
             otool -L ../mcxlab/mcx.mex*
           else