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authorChris Packham <judge.packham@gmail.com>2021-08-29 21:27:29 +1200
committerChris Packham <judge.packham@gmail.com>2021-08-29 21:27:29 +1200
commitb346fa58b15b9880b714c6f0cc4dddaf84d3da6f (patch)
tree60bf7a60bcfd2f3c516699128dc787933f496e73 /config
parentf64bd272d8b879662ddbfecc9661553cac987c92 (diff)
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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>
Diffstat (limited to 'config')
-rw-r--r--config/cc/gcc.in19
1 files changed, 19 insertions, 0 deletions
diff --git a/config/cc/gcc.in b/config/cc/gcc.in
index 4d0a3eef..f4b0b7ef 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"