[Buildroot] [PATCH v3 2/3] package/zstd: Change Build options
Norbert Lange
nolange79 at gmail.com
Tue Jun 15 10:35:47 UTC 2021
Disable the legacy format, these are just needed for
decompressing files created with pre-release version.
Use Buildroot's setting for optimization, zstd's build system
overrides CFLAGS, but MOREFLAGS can override again.
Quick tests show that using -O2 (like buildroot)
is actually a little faster than -O3 on x86_64 Atoms.
Signed-off-by: Norbert Lange <nolange79 at gmail.com>
---
v2->v3:
* Remove ZSTD_OPTS_MOREFLAGS variable
---
package/zstd/zstd.mk | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/package/zstd/zstd.mk b/package/zstd/zstd.mk
index 95f25ebfa4..54ce4133fe 100644
--- a/package/zstd/zstd.mk
+++ b/package/zstd/zstd.mk
@@ -13,6 +13,7 @@ ZSTD_CPE_ID_VENDOR = facebook
ZSTD_CPE_ID_PRODUCT = zstandard
ZSTD_OPTS += PREFIX=/usr
+ZSTD_OPTS += ZSTD_LEGACY_SUPPORT=0
ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
ZSTD_OPTS += HAVE_THREAD=1
@@ -41,6 +42,9 @@ else
ZSTD_OPTS += HAVE_LZ4=0
endif
+# zstd will append -O3 after $(CFLAGS), use MOREFLAGS to override again
+ZSTD_OPTS += MOREFLAGS="$(TARGET_OPTIMIZATION)"
+
ZSTD_BUILD_PROG_TARGET = zstd-release
# Since v1.5.0 the dynamic library is built for
--
2.30.2
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