diff --git a/projects/gnome.org/libxml2/package.yml b/projects/gnome.org/libxml2/package.yml
index 42fb9b4d..3997a76f 100644
--- a/projects/gnome.org/libxml2/package.yml
+++ b/projects/gnome.org/libxml2/package.yml
@@ -34,8 +34,9 @@ build:
     ARGS:
       - --prefix={{prefix}}
       - --without-lzma
-    # undefined symbol errors in newer llvms prevent building shared libs
-    CFLAGS: $CFLAGS -Wl,--undefined-version
+    linux:
+      # undefined symbol errors in newer llvms prevent building shared libs
+      CFLAGS: $CFLAGS -Wl,--undefined-version
 
 test:
   dependencies: