allow namespacing cxx

paleolimbot · paleolimbot · commit a717ff1b10fc · 2024-10-29T16:19:01.000-05:00
diff --git a/src/nanoarrow/nanoarrow_config.h.in b/src/nanoarrow/nanoarrow_config.h.in
@@ -29,7 +29,11 @@
 
 @NANOARROW_NAMESPACE_DEFINE@
 
-#define NANOARROW_CXX_NAMESPACE_BEGIN namespace nanoarrow {
+#if !defined(NANOARROW_CXX_NAMESPACE)
+#define NANOARROW_CXX_NAMESPACE nanoarrow
+#endif
+
+#define NANOARROW_CXX_NAMESPACE_BEGIN namespace NANOARROW_CXX_NAMESPACE {
 #define NANOARROW_CXX_NAMESPACE_END }
 
 #endif
