[oe] [meta-oe][dizzy][PATCH] ptpd: disable libpcap detection via pcap-config

[akuster808]

merged to akuster/dizzy-next

- armin

On 05/19/2015 11:52 PM, Stefan Agner wrote:
> When the host system provides pcap-config, the configure scripts
> detect that and add a bogous CPPFLAG:
>
> checking for pcap-config... /usr/bin/pcap-config
> checking if we want to build with libpcap support... yes, pcap-config
> ...
> PCAP_CPPFLAGS =  -I/usr/include
>
> Which down the line can lead to compile errors due to wrong headers
> being included. Fix this issue by using --with-pcap-config=no which
> prevents detection using pcap-config but does "guessing", which works
> fine for OE.
>
> Signed-off-by: Stefan Agner <stefan at agner.ch>
> ---
> If the host has libpcap development packages installed (which provide
> pcap-config), this lead to compile errors like:
> cc1: warning: include location "/usr/include" is unsafe for cross-compilation
> [-Wpoison-system-directories]
> cc1: warning: include location "/usr/include" is unsafe for cross-compilation
> [-Wpoison-system-directories]
> cc1: warning: include location "/usr/include" is unsafe for cross-compilation
> [-Wpoison-system-directories]
> In file included from /usr/include/bits/byteswap.h:35:0,
>                   from /usr/include/endian.h:60,
>                   from /usr/include/bits/waitstatus.h:64,
>                   from /usr/include/stdlib.h:42,
>                   from
> /home/cceylan01/mywork/pdu/toradex/oe-core/build/out-glibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/ptpd/2.3.1-rc2-r0/ptpd-2.3.1-rc2/src/ptpd.h:40,
>                   from
> /home/cceylan01/mywork/pdu/toradex/oe-core/build/out-glibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/ptpd/2.3.1-rc2-r0/ptpd-2.3.1-rc2/src/bmc.c:54:
> /home/cceylan01/mywork/pdu/toradex/oe-core/build/out-glibc/work/armv7at2hf-vfp-neon-angstrom-linux-gnueabi/ptpd/2.3.1-rc2-r0/ptpd-2.3.1-rc2/src/bmc.c:
> In function 'initData':
> /usr/include/bits/byteswap-16.h:31:5: error: invalid 'asm': invalid operand for
> code 'w'
>       __asm__ ("rorw $8, %w0"           \
>       ^
> /usr/include/netinet/in.h:403:21: note: in expansion of macro '__bswap_16'
>   #   define htons(x) __bswap_16 (x)
>
> This problem is already solved in fido/master due to the change to
> pkgconfig by Joe MacDonald...
>
>   meta-networking/recipes-daemons/ptpd/ptpd_2.3.1-rc2.bb | 4 ++--
>   1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/meta-networking/recipes-daemons/ptpd/ptpd_2.3.1-rc2.bb b/meta-networking/recipes-daemons/ptpd/ptpd_2.3.1-rc2.bb
> index db74e44..b6abfee 100644
> --- a/meta-networking/recipes-daemons/ptpd/ptpd_2.3.1-rc2.bb
> +++ b/meta-networking/recipes-daemons/ptpd/ptpd_2.3.1-rc2.bb
> @@ -8,7 +8,7 @@ SECTION = "network"
>   LICENSE = "BSD"
>   LIC_FILES_CHKSUM = "file://README;md5=2452033fe374283f29579898663b1aa8"
>
> -DEPENDS = "libpcap"
> +DEPENDS = "linux-libc-headers libpcap"
>
>   inherit autotools
>
> @@ -30,7 +30,7 @@ S = "${WORKDIR}/ptpd-${PV}"
>
>   EXTRA_OEMAKE = ""
>
> -EXTRA_OECONF += "--disable-snmp"
> +EXTRA_OECONF += "--disable-snmp --with-pcap-config=no"
>
>   do_install() {
>       install -d ${D}${bindir} ${D}${mandir}/man8
>