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| author |   Chris Packham <judge.packham@gmail.com> | 2021-08-29 09:27:29 (GMT) |
|---|---|---|
| committer | Chris Packham <judge.packham@gmail.com> | 2021-08-29 09:27:29 (GMT) |
| commit | b346fa58b15b9880b714c6f0cc4dddaf84d3da6f (patch) | |
| tree | 60bf7a60bcfd2f3c516699128dc787933f496e73 | |
| parent | f64bd272d8b879662ddbfecc9661553cac987c92 (diff) | |
cc/gcc: Add options for zstd usage
GCC can support using zstd compression for LTO object files. By default
GCC's configure will enable this if libzstd is installed on the machine
building the toolchain. This may be undesirable if the toolchain is to
be used on a different machine. Add an option to control zstd usage and
set the default to the same as the current behaviour (i.e. auto).
Fixes #1579
Signed-off-by: Chris Packham <judge.packham@gmail.com>
| -rw-r--r-- | config/cc/gcc.in | 19 | ||||
| -rw-r--r-- | scripts/build/cc/gcc.sh | 5 |
2 files changed, 24 insertions, 0 deletions
diff --git a/config/cc/gcc.in b/config/cc/gcc.in index 4d0a3ee..f4b0b7e 100644 --- a/config/cc/gcc.in +++ b/config/cc/gcc.in @@ -179,6 +179,25 @@ config CC_GCC_USE_LTO help Enable the Link Time Optimisations. +config CC_GCC_LTO_ZSTD + tristate + prompt "Support LTO compression with zstd" + default m + depends on CC_GCC_USE_LTO + depends on GCC_10_or_later + depends on ! STATIC_TOOLCHAIN + help + Support zstd compression for LTO object files. This will require + libzstd to be installed when using the toolchain + + Option | ZSTD use | Associated ./configure switch + ---------+--------------------+-------------------------------- + Y | forcibly used | --with-zstd + M | auto | (none, ./configure decides) + N | forcibly not used | --without-zstd + + If unsure, say 'M' + #----------------------------------------------------------------------------- comment "Settings for libraries running on target" diff --git a/scripts/build/cc/gcc.sh b/scripts/build/cc/gcc.sh index 4e0def0..fdfa7d6 100644 --- a/scripts/build/cc/gcc.sh +++ b/scripts/build/cc/gcc.sh @@ -1130,6 +1130,11 @@ do_gcc_backend() { else extra_config+=("--disable-lto") fi + case "${CT_CC_GCC_LTO_ZSTD}" in + y) extra_config+=("--with-zstd");; + m) ;; + *) extra_config+=("--without-zstd");; + esac if [ ${#host_libstdcxx_flags[@]} -ne 0 ]; then extra_config+=("--with-host-libstdcxx=${host_libstdcxx_flags[*]}") |