Comression level -19 was chosen as it provides a very good tradeoff
between compression ratio and performance, especially in multithreaded
operation.

Signed-off-by: Matthias Schiffer <mschif...@universe-factory.net>
---
 target/imagebuilder/Makefile | 8 ++++----
 target/sdk/Makefile          | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/target/imagebuilder/Makefile b/target/imagebuilder/Makefile
index b463feb456ee..5c09109150a8 100644
--- a/target/imagebuilder/Makefile
+++ b/target/imagebuilder/Makefile
@@ -21,7 +21,7 @@ IB_IDIR:=$(patsubst 
$(TOPDIR)/%,$(PKG_BUILD_DIR)/%,$(STAGING_DIR_IMAGE))
 
 all: compile
 
-$(BIN_DIR)/$(IB_NAME).tar.xz: clean
+$(BIN_DIR)/$(IB_NAME).tar.zst: clean
        rm -rf $(PKG_BUILD_DIR)
        mkdir -p $(IB_KDIR) $(IB_LDIR) $(PKG_BUILD_DIR)/staging_dir/host/lib \
                $(PKG_BUILD_DIR)/target $(PKG_BUILD_DIR)/scripts $(IB_DTSDIR)
@@ -86,12 +86,12 @@ endif
        (cd $(PKG_BUILD_DIR); find staging_dir/host/bin/ 
$(IB_LDIR)/scripts/dtc/ -type f | \
                $(XARGS) $(SCRIPT_DIR)/bundle-libraries.sh 
$(PKG_BUILD_DIR)/staging_dir/host)
        STRIP=sstrip $(SCRIPT_DIR)/rstrip.sh 
$(PKG_BUILD_DIR)/staging_dir/host/bin/
-       $(TAR) -cf - -C $(BUILD_DIR) $(IB_NAME) | xz -T$(if $(filter 
1,$(NPROC)),2,0) -zc -7e > $@
+       $(TAR) -cf - -C $(BUILD_DIR) $(IB_NAME) | zstd -T0 -19 -f -o $@
 
 download:
 prepare:
-compile: $(BIN_DIR)/$(IB_NAME).tar.xz
+compile: $(BIN_DIR)/$(IB_NAME).tar.zst
 install: compile
 
 clean: FORCE
-       rm -rf $(PKG_BUILD_DIR) $(BIN_DIR)/$(IB_NAME).tar.xz
+       rm -rf $(PKG_BUILD_DIR) $(BIN_DIR)/$(IB_NAME).tar.zst
diff --git a/target/sdk/Makefile b/target/sdk/Makefile
index 6d818347204a..13389c849958 100644
--- a/target/sdk/Makefile
+++ b/target/sdk/Makefile
@@ -81,7 +81,7 @@ KERNEL_FILES := $(patsubst $(TOPDIR)/%,%,$(wildcard 
$(addprefix $(LINUX_DIR)/,$(
 
 all: compile
 
-$(BIN_DIR)/$(SDK_NAME).tar.xz: clean
+$(BIN_DIR)/$(SDK_NAME).tar.zst: clean
        mkdir -p $(SDK_BUILD_DIR)/dl $(SDK_BUILD_DIR)/package
        $(CP) -L $(INCLUDE_DIR) $(SCRIPT_DIR) $(SDK_BUILD_DIR)/
        $(TAR) -cf - -C $(TOPDIR) \
@@ -156,13 +156,13 @@ $(BIN_DIR)/$(SDK_NAME).tar.xz: clean
        find $(SDK_BUILD_DIR) -name CVS | $(XARGS) rm -rf
        -make -C $(SDK_BUILD_DIR)/scripts/config clean
        (cd $(BUILD_DIR); \
-               tar -I 'xz -7e' -cf $@ $(SDK_NAME); \
+               tar -I 'zstd -T0 -19' -cf $@ $(SDK_NAME); \
        )
 
 download:
 prepare:
-compile: $(BIN_DIR)/$(SDK_NAME).tar.xz
+compile: $(BIN_DIR)/$(SDK_NAME).tar.zst
 install: compile
 
 clean:
-       rm -rf $(SDK_BUILD_DIR) $(BIN_DIR)/$(SDK_NAME).tar.xz
+       rm -rf $(SDK_BUILD_DIR) $(BIN_DIR)/$(SDK_NAME).tar.zst
-- 
2.26.2


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