Index: configure.ac
==================================================================
--- configure.ac
+++ configure.ac
@@ -970,10 +970,11 @@
 		;;
 	esac
 
 	AC_DEFINE(OF_HAVE_THREADS, 1, [Whether we have threads])
 	AC_SUBST(USE_SRCS_THREADS, '${SRCS_THREADS}')
+	AC_SUBST(OBJC_SYNC, objc_sync)
 
 	AC_ARG_ENABLE(compiler-tls,
 		AS_HELP_STRING([--disable-compiler-tls],
 			[disable compiler thread local storage]))
 

Index: extra.mk.in
==================================================================
--- extra.mk.in
+++ extra.mk.in
@@ -36,10 +36,11 @@
 LINKLIB = @LINKLIB@
 LOOKUP_ASM_A = @LOOKUP_ASM_A@
 LOOKUP_ASM_AMIGALIB_A = @LOOKUP_ASM_AMIGALIB_A@
 LOOKUP_ASM_LIB_A = @LOOKUP_ASM_LIB_A@
 MAP_LDFLAGS = @MAP_LDFLAGS@
+OBJC_SYNC = @OBJC_SYNC@
 OFARC = @OFARC@
 OFDNS = @OFDNS@
 OFHASH = @OFHASH@
 OFHTTP = @OFHTTP@
 OF_BLOCK_TESTS_M = @OF_BLOCK_TESTS_M@

Index: tests/Makefile
==================================================================
--- tests/Makefile
+++ tests/Makefile
@@ -1,9 +1,9 @@
 include ../extra.mk
 
 SUBDIRS = ${TESTPLUGIN}	\
-	  objc_sync	\
+	  ${OBJC_SYNC}	\
 	  terminal
 
 CLEAN = EBOOT.PBP		\
 	boot.dol		\
 	${PROG_NOINST}.arm9	\