diff --git a/gnuradio-core/src/lib/filter/CMakeLists.txt b/gnuradio-core/src/lib
index d039a2a..9a975f9 100644
--- a/gnuradio-core/src/lib/filter/CMakeLists.txt
+++ b/gnuradio-core/src/lib/filter/CMakeLists.txt
@@ -32,6 +32,10 @@ IF(APPLE AND "${CMAKE_SYSTEM_PROCESSOR}" STREQUAL "i386")
     SET(CMAKE_SYSTEM_PROCESSOR "x86_64")
 ENDIF()

+IF(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64")
+    SET_PROPERTY(SOURCE ${gr_core_filter_asm} PROPERTY COMPILE_FLAGS "-m64")
+ENDIF()
+
 ########################################################################
 # Generate the makefile.gen, then extract its sources:
 # This is a round-about way to extract the sources,
diff --git a/gruel/src/include/gruel/pmt_sugar.h b/gruel/src/include/gruel/pmt_s
index 92bcb5f..e58734e 100644