Fix c and python build on mac os
diff --git a/build.yaml b/build.yaml
index d636287..e97087f 100644
--- a/build.yaml
+++ b/build.yaml
@@ -3377,8 +3377,8 @@
   ares:
     CFLAGS: -Wno-sign-conversion -Wno-invalid-source-encoding
     CPPFLAGS: -Ithird_party/c-ares -Isrc/c-ares $(if $(subst Linux,,$(SYSTEM)),,-Isrc/c-ares/config_linux)
-      -fvisibility=hidden -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0
-      -DNOMINMAX -DHAVE_CONFIG_H
+      $(if $(subst Darwin,,$(SYSTEM)),,-Isrc/c-ares/config_darwin) -fvisibility=hidden
+      -D_GNU_SOURCE -DWIN32_LEAN_AND_MEAN -D_HAS_EXCEPTIONS=0 -DNOMINMAX -DHAVE_CONFIG_H
   boringssl:
     CFLAGS: -Wno-sign-conversion -Wno-conversion -Wno-unused-value -Wno-unknown-pragmas
       -Wno-implicit-function-declaration -Wno-unused-variable -Wno-sign-compare $(NO_W_EXTRA_SEMI)