diff --git a/.github/workflows/test-cice.yml b/.github/workflows/test-cice.yml
index 9fb27a6cd..42e4ca14d 100644
--- a/.github/workflows/test-cice.yml
+++ b/.github/workflows/test-cice.yml
@@ -50,6 +50,7 @@ jobs:
           echo "xcrun --show-sdk-path: $(xcrun --show-sdk-path)"
           echo "xcode-select -p: $(xcode-select -p)"
           export SDKROOT=$(xcrun --show-sdk-path)
+          echo "SDKROOT: $SDKROOT"
       - name: system info
         shell: /bin/bash {0}
         run: |
diff --git a/configuration/scripts/machines/Macros.conda_macos b/configuration/scripts/machines/Macros.conda_macos
index 6f26da0fc..f8b95aa76 100644
--- a/configuration/scripts/machines/Macros.conda_macos
+++ b/configuration/scripts/machines/Macros.conda_macos
@@ -47,7 +47,8 @@ SDKPATH = $(shell xcrun --show-sdk-path)
 ifeq ($(strip $(SDKPATH)),)
   CFLAGS_HOST := 
 else
-  CFLAGS_HOST = -isysroot $(SDKPATH)
+  CFLAGS_HOST := -isysroot $(SDKPATH)
+  CFLAGS += -isysroot $(SDKPATH)
   LD += -L$(SDKPATH)/usr/lib
 endif