netdev - Re: [bpf PATCH v2] bpf: fix for lex/yacc build error with gcc-5

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Date:   Wed, 25 Apr 2018 23:42:28 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     John Fastabend <john.fastabend@...il.com>, ast@...nel.org,
        jbenc@...hat.com
Cc:     netdev@...r.kernel.org
Subject: Re: [bpf PATCH v2] bpf: fix for lex/yacc build error with gcc-5

On 04/25/2018 11:22 PM, John Fastabend wrote:
> Fix build error found with Ubuntu shipped gcc-5
> 
> ~/git/bpf/tools/bpf$ make all
> 
> Auto-detecting system features:
> ...                        libbfd: [ OFF ]
> ...        disassembler-four-args: [ OFF ]
> 
>   CC       bpf_jit_disasm.o
>   LINK     bpf_jit_disasm
>   CC       bpf_dbg.o
> /home/john/git/bpf/tools/bpf/bpf_dbg.c: In function ‘cmd_load’:
> /home/john/git/bpf/tools/bpf/bpf_dbg.c:1077:13: warning: ‘cont’ may be used uninitialized in this function [-Wmaybe-uninitialized]
>   } else if (matches(subcmd, "pcap") == 0) {
>              ^
>   LINK     bpf_dbg
>   CC       bpf_asm.o
> make: *** No rule to make target `bpf_exp.yacc.o', needed by `bpf_asm'.  Stop.
> 
> Fixes: 5a8997f20715 ("tools: bpf: respect output directory during build")
> Signed-off-by: John Fastabend <john.fastabend@...il.com>

Applied to bpf, thanks John! Will see to get that annoying bpf_dbg warn out
of the way if no one beats me to it. ;)