compliing the project faild in arm 64

[magnate3]

I complile the project but fails in arm 64. because of libz.so.
so,I solve the problem by the following steps :
################ download zlib-1.2.8.tar.gz################
################ make & install zlib-1.2.8 ####################

./configure

make && make install
headers will be installed in /usr/local/include/ and libz.so.1.2.8 will be installed in /usr/local/lib/
ls /usr/local/include/

ls /usr/local/lib/

################edit common/common.mk ####################

LDFLAGS ?= -L$(LIBBPF_DIR) -L/usr/local/lib

LIBS = -l:libbpf.a -lelf $(USER_LIBS) -lz -l:libz.so.1.2.8

the solution is here:https://github.com/magnate3/xdp

[tohojo]

magnate3 <notifications@github.com> writes:

I complile the project but fails in arm 64. because of libz.so. so,I solve the problem by the following steps : ################ download zlib-1.2.8.tar.gz################ ################ make & install zlib-1.2.8 #################### ./configure make && make install headers will be installed in /usr/local/include/ and libz.so.1.2.8 will be installed in /usr/local/lib/ ls /usr/local/include/ ls /usr/local/lib/ ################edit common/common.mk #################### LDFLAGS ?= -L$(LIBBPF_DIR) -L/usr/local/lib LIBS = -l:libbpf.a -lelf $(USER_LIBS) -lz -l:libz.so.1.2.8

Doesn't your distro provide a libz-devel (or libz-dev) package?

[magnate3]

I have installed libz-devel in my os ,but in the process of compling report
undefined reference to 'gzopen()';
undefined reference to 'gzwrite()';
undefined reference to 'gzclose()';

so,I make & install zlib-1.2.8 and finally solve the problem.

[tohojo]

magnate3 <notifications@github.com> writes:

I have installed libz-devel in my os ,but in the process of compling report undefined reference to 'gzopen()'; undefined reference to 'gzwrite()'; undefined reference to 'gzclose()'; so,I make & install zlib-1.2.8 and finally solve the problem.

With the libz-devel package it should be enough to just add the -lz linker flag. Did you manually update the libbpf version, BTW? The version referenced in the git submodule does not depend on zlib...

[magnate3]

I the following steps
1、 git submodule add https://github.com/libbpf/libbpf/ libbpf
2、 add -lz linker flag.
but reports the bugs such as undefined reference to 'gzopen()' and so on

[tohojo]

magnate3 <notifications@github.com> writes:

I the following steps 1、 git submodule add https://github.com/libbpf/libbpf/ libbpf

Yeah, no reason to do that. If you clone the repo with --recurse-submodules, or just do git submodule init git submodule update after a clone (without doing any 'submodule add'), you'll get the specific revision of libbpf we've tested against, and not have any problems with new versions. We'll update the build system to include zlib when we do pull forward the libbpf version.

[magnate3]

thank you very much ,your way can also solve my probleem. cloud you tell me where I can share my notes about the kernel achivements of xdp

[tohojo]

magnate3 <notifications@github.com> writes:

thank you very much ,your way can also solve my proble. cloud you tell me where I can share my notes about the kernel achivements of xdp

Hmm, good question. There's not really a repository for these kinds of things; so I think your best bet may be to just publish it somewhere else and share the link, for example on the xdp-newbies list...

[dmitris]

here's the issue I hit: git clone --recurse-submodules https://github.com/xdp-project/xdp-tutorial as @magnate3 wrote above works fine, but git clone --recurse-submodules --remote-submodules https://github.com/xdp-project/xdp-tutorial gets a wrong version of libbpf and correspondingly the ZLIB compile failure.