[Buildroot] [PATCH 1/1] package/zlib-ng: fix build on powerpc

[Fabrice Fontaine]

Disable POWER8 optimisations to fix the following build failure with
powerpc and libglib2 raised since bump to version 1.9.9-b1 in commit
1f7b12a0b4572d7e763c431a63c22cfb912b8b14 and
https://github.com/zlib-ng/zlib-ng/commit/b81f4ee96dcbdf1db34b00727b6f1829a2ba1edb:

/home/autobuild/autobuild/instance-9/output-1/host/lib/gcc/powerpc-buildroot-linux-musl/11.2.0/../../../../powerpc-buildroot-linux-musl/bin/ld: /home/autobuild/autobuild/instance-9/output-1/host/powerpc-buildroot-linux-musl/sysroot/usr/lib/libz.a(adler32_power8.c.o): in function `adler32_power8':
/home/autobuild/autobuild/instance-9/output-1/build/zlib-ng-2.0.6/arch/power/adler32_power8.c:106: undefined reference to `vec_sumsu'

Fixes:
 - http://autobuild.buildroot.org/results/f864a0e2307e25342b45c90a5b4fb57a0f5c1c93

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 package/zlib-ng/zlib-ng.mk | 1 +
 1 file changed, 1 insertion(+)

diff --git a/package/zlib-ng/zlib-ng.mk b/package/zlib-ng/zlib-ng.mk
index fb497b8c11..09edfe1faf 100644
--- a/package/zlib-ng/zlib-ng.mk
+++ b/package/zlib-ng/zlib-ng.mk
@@ -15,6 +15,7 @@ ZLIB_NG_PROVIDES = zlib
 ZLIB_NG_CONF_OPTS += \
 	-DWITH_GZFILEOP=1 \
 	-DWITH_OPTIM=1 \
+	-DWITH_POWER8=OFF \
 	-DZLIB_COMPAT=1 \
 	-DZLIB_ENABLE_TESTS=OFF
 
-- 
2.35.1