diff --git a/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj b/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj
index 68194be6..bf11722d 100644
--- a/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj
+++ b/BasiliskII/src/MacOSX/BasiliskII.xcodeproj/project.pbxproj
@@ -1227,6 +1227,7 @@
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					HAVE_CONFIG_H,
+					"USE_XCODE=1",
 					"DEBUG=1",
 				);
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
@@ -1281,6 +1282,7 @@
 				GCC_PREPROCESSOR_DEFINITIONS = (
 					"$(inherited)",
 					HAVE_CONFIG_H,
+					"USE_XCODE=1",
 				);
 				GCC_WARN_64_TO_32_BIT_CONVERSION = YES;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR;
diff --git a/BasiliskII/src/MacOSX/config.h b/BasiliskII/src/MacOSX/config.h
index e88fee35..76393d47 100644
--- a/BasiliskII/src/MacOSX/config.h
+++ b/BasiliskII/src/MacOSX/config.h
@@ -1,6 +1,13 @@
 /* config.h.  Generated from config.h.in by configure.  */
 /* config.h.in.  Generated from configure.ac by autoheader.  */
 
+#if ! USE_XCODE
+// HACK, dludwig@pobox.com: Unless we are building with Xcode, use the
+// config.h file that Autotools generates.  This is located in
+// BasiliskII/src/Unix/
+#include "../Unix/config.h"
+#else
+
 /* Define if building universal (internal helper macro) */
 /* #undef AC_APPLE_UNIVERSAL_BUILD */
 
@@ -811,3 +818,4 @@
 #define FPU_UAE 1
 //#define FPU_IMPLEMENTATION 1
 
+#endif