On Mon, Mar 15, 2021 at 3:44 PM Marek Behun marek.behun@nic.cz wrote:
On Fri, 12 Mar 2021 10:01:34 -0800 Tim Harvey tharvey@gateworks.com wrote:
Marek / Heinrich,
Yes, 'make -j1' does work.
Tim
Tim, could you try make -j8, but change the toplevel Makefile: find string "-flto=jobserver" and change it to "-flto".
Does make -j8 fail then?
Thank you.
Marek,
diff --git a/Makefile b/Makefile index 9518ba4a32..20b27e6dd5 100644 --- a/Makefile +++ b/Makefile @@ -688,7 +688,7 @@ ifdef CONFIG_LTO ifeq ($(cc-name),clang) LTO_FINAL_LDFLAGS += -flto else - LTO_FINAL_LDFLAGS += -fuse-linker-plugin -flto=jobserver + LTO_FINAL_LDFLAGS += -fuse-linker-plugin -flto
# use plugin aware tools AR = $(CROSS_COMPILE)gcc-ar
make distclean imx8mm_venice_defconfig make -j8 flash.bin
This now builds but the LTO steps do take noticeably several seconds longer than without LTO (13 seconds without CONFIG_LTO vs 23 seconds with) which is a bummer for development workflow.
You can of course play with building this as well... if you need me to boot test something I can do that for you (and this does boot just fine).
Best regards,
Tim