memtest: use precompiled memtest binary on x86_64

Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>

lfs/memtest

@@ -31,7 +31,7 @@ DL_FILE    = $(THISAPP).tar.gz
 DL_FROM    = $(URL_IPFIRE)
 DIR_APP    = $(DIR_SRC)/$(THISAPP)
 TARGET     = $(DIR_INFO)/$(THISAPP)
-SUP_ARCH   = i586
+SUP_ARCH   = i586 x86_64
 
 ###############################################################################
 # Top-level Rules
@@ -71,11 +71,19 @@ $(subst %,%_MD5,$(objects)) :
 $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	@$(PREBUILD)
 	@rm -rf $(DIR_APP) && cd $(DIR_SRC) && tar zxf $(DIR_DL)/$(DL_FILE)
+	-mkdir -p /usr/lib/memtest86+
+
+ifeq "$(MACHINE)" "i586"
 	# Enable SMP as default
 	cd $(DIR_APP) && sed -i -e "s|CONSERVATIVE_SMP 1|CONSERVATIVE_SMP 0|g" config.h
 	cd $(DIR_APP) && sed -i -e "s|scp |echo |g" Makefile
 	cd $(DIR_APP) && make $(EXTRA_MAKE)
-	-mkdir -p /usr/lib/memtest86+
 	cd $(DIR_APP) && cp -f memtest.bin /usr/lib/memtest86+
+else
+	# 64bit only systems cannot link mentest without 32bit gcc libs
+	# so we use the precompiled binary from memtest author
+	cd $(DIR_APP) && cp -f precomp.bin /usr/lib/memtest86+/memtest.bin
+endif
+
 	@rm -rf $(DIR_APP)
 	@$(POSTBUILD)