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package/dhcp: fix cross build

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Fixes build error

Building dns library in /home/bernd/buildroot/br4/output/build/dhcp-4.4.3-
P1/bind/bind-9.11.36/lib/dns
./gen: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.38' not found
(required by ./gen)
make[4]: *** [Makefile:601: include/dns/enumtype.h] Error 1
make[3]: *** [Makefile:595: include] Error 2

with this defconfig

BR2_x86_64=y
BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
BR2_PACKAGE_DHCP=y

Please note that this build error only occurs when the target and the
host system have the same arch. For example this defconfig builds fine:

BR2_PACKAGE_BUSYBOX_SHOW_OTHERS=y
BR2_PACKAGE_DHCP=y

on a Debian 12 x86_64 host using glibc-2.36:

$ /lib/ld-linux.so.2  --version
ld.so (Debian GLIBC 2.36-9+deb12u1) stable release version 2.36.

The error occurs since buildroot commit 34f8d874ee which bumped glibc
from 2.37 to 2.38.

This patch is inspired by the Yocto Project:
https://patchwork.yoctoproject.org/project/oe/patch/20230715212159.3265080-1-raj.khem@gmail.com/

Signed-off-by: Bernd Kuhls <bernd@kuhls.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Bernd Kuhls 2023-10-02 21:51:59 +02:00 committed by Thomas Petazzoni
parent 5a0f41e56d
commit e1dc10b7b8
1 changed files with 3 additions and 0 deletions
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3
package/dhcp/dhcp.mk
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@ -33,6 +33,9 @@ DHCP_CONF_ENV = \
CFLAGS='$(TARGET_CFLAGS) -DISC_CHECK_NONE=1'
DHCP_BIND_EXTRA_CONFIG = \
--build=$(GNU_HOST_NAME) \
--host=$(GNU_TARGET_NAME) \
--target=$(GNU_TARGET_NAME) \
BUILD_CC='$(HOSTCC)' \
BUILD_CFLAGS='$(HOST_CFLAGS)' \
BUILD_CPPFLAGS='$(HOST_CPPFLAGS)' \