# This flavour enables link-time optimization (LTO).

# This requires GCC 4.5 or higher; it's known to work on GCC 4.6.3.

include build/flavour-opt.mk

# Enable LTO for compiling and linking.

# Don't bother with native code output in the compile phase, since new code

# will be generated in the link phase.

# Ideally LTO would be enabled for the 3rdparty libs as well, but I haven't

# been able to make that work.

COMPILE_FLAGS+=-flto

LINK_FLAGS+=-flto=jobserver

# Enable this line to speed up compilation. This is supported from gcc-4.7

# onward. Quote from the gcc manual:

#     -fno-fat-lto-objects improves compilation time over plain LTO, but

#     requires the complete toolchain to be aware of LTO. It requires a

#     linker with linker plugin support for basic functionality.

#COMPILE_FLAGS+=-fno-fat-lto-objects