speed: use O3
size: use Os
default: use O2
The priority order is to use speed if set, then size, and fallback
to default when neither are set.
Signed-off-by: Ian Leonard <antonlacon@gmail.com>
Relies on the assumption that the machine that will build the toolchain will
also be the machine to use said toolchain.
Signed-off-by: Ian Leonard <antonlacon@gmail.com>
Builds use a mix of styles for the hash table in the ELF header. Only
one style of table is necessary, and the GNU one is more performant
for lookups. Eliminating the SysV style hash table trims ~450kb. This
is done via setting the default linker in gcc instead of LDFLAGS as
some packages ignore LDFLAGS.
Note that if MIPS is ever added as a supported architecture, it
does not support hash-style=gnu at this time.
Signed-off-by: Ian Leonard <antonlacon@gmail.com>
Split up the LTO flags in config/optimize and assemble
full C/CXX/LDFLAGS in config/functions.
Add flags for parallel/single-threaded lto and fat/non-fat
lto object creation.
Change the default lto build flag to use non-fat lto objects.
Signed-off-by: Matthias Reichl <hias@horus.com>
- replace strip_lto/strip_gold (only allowed to disable)
- add flag for PIC feature
- add flag to stop build parallel
- add support for hardening option (initial copy from debian 9)
All build parameters, are added in setup_toolchain.
`PKG_[FLAG]_[HOST/TARGET]_ENABLED` variable is introduced for checking the flag (yes/no) in the package.mk
Thanks to @MilhouseVH, for support and fixing
