Hi Tom, On Wed, 3 Aug 2022 at 12:13, Simon Glass <s...@chromium.org> wrote: > > LTO (Link-Time Optimisation) is an very useful feature which can > significantly reduce the size of U-Boot binaries. So far it has been > made available for selected ARM boards and sandbox. > > However, incremental builds are much slower when LTO is used. For example, > an incremental build of sandbox takes 2.1 seconds on my machine, but 6.7 > seconds with LTO enabled. > > Add a NO_LTO parameter to the build, similar to NO_SDL, so it can be > disabled during development if needed, for faster builds. > > Add some documentation about LTO while we are here. > > Signed-off-by: Simon Glass <s...@chromium.org> > --- > > Changes in v3: > - Rework to operate like the NO_SDL flag > > Makefile | 17 ++++++++++++----- > arch/arm/config.mk | 4 ++-- > arch/arm/include/asm/global_data.h | 2 +- > doc/build/gcc.rst | 17 +++++++++++++++++ > scripts/Makefile.spl | 2 +- > 5 files changed, 33 insertions(+), 9 deletions(-)
Any word on this patch and the next one, please? Regards, Simon
