SWDEV-366823 - Change pragma message to warning

File reorganization feature was implemented with backward compatibility
The backward compatibility support will be deprecated in future release.
Changed the #pragma message to #warning for a smooth transition

Change-Id: Ib616bf4b7358a0607832a8af423c75e0bf2ab72d

src/header_template.hpp.in

@@ -22,7 +22,12 @@
 #ifndef @include_guard@
 #define @include_guard@
 
+#if defined(__GNUC__)
+#warning "This file is deprecated. Use file from include path /opt/rocm-ver/include/ and include as rdc/@header_name@"
+#else
 #pragma message("This file is deprecated. Use file from include path /opt/rocm-ver/include/ and include as rdc/@header_name@")
+#endif
+
 @include_statements@
 
 #endif