Hi,
On Mon, 2020-07-13 at 16:45 -0400, John Rama wrote:
> Hello expert
>
> I'm now trying to evalute avtp plugin of gst-plugins-bad, however I can not
> build avtp plugin successfully because meson can not find "strut sock_txtime"
> in "linux/net_tstamp.h" of my system.
>
> I'm using the custom build kernel of 4.19.0 and it's headers are installed at
> /usr/src/linux-headers-4.19.0
>
> Question is how can I tell meson to look for /usr/src/linux-headers-4.19.0 ??
>
> Really appreciated your help !!
>
> ============================================================
>
> # What I tried
> I tried followings, but meson can not detect "strut sock_txtime" in "linux/net_tstamp.h".
> 1. export C_INCLUDE_PATH="/usr/src/linux-headers-4.19.0"
> to add /usr/src/linux-headers-4.19.0 for default search path.
> $cc -E -v -
> ...
> #include <...> search starts here:
> /usr/src/linux-headers-4.19.0
> /usr/lib/gcc/x86_64-linux-gnu/6/include
> /usr/local/include
> /usr/lib/gcc/x86_64-linux-gnu/6/include-fixed
> /usr/include/x86_64-linux-gnu
> /usr/include
> End of search list.
> 2. add following line in gst-plugins-bad/ext/avtp/meson.build
> include_directories('/usr/src/linux-headers-4.19.0/')
>
> # environment
> I'm using master of gst-build.
>
> the version of meson and ninja is as following.
> $meson --version
> 0.53.1
> $ ninja --version
> 17.7.2
>
> # how to build
> $meson build
Did you try something like `CFLAGS='-I/usr/src/linux-headers-4.19.0' meson build`?
>
> $ninja -C build
>
> # Log of "meson build"
> |Dependency avtp from subproject subprojects/avtp found: YES 0.1.0
> |Checking for type "struct sock_txtime" : NO
>
> # The code of gst-plugins-bad/ext/avtp/meson.build
> if avtp_dep.found() and cc.has_type('struct sock_txtime', prefix : '#include <linux/net_tstamp.h>')
> gstavtp = library('gstavtp', avtp_sources,
> .....
> )
>
> ============================================================
> John Rama
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