Re: Build failure: 'seccomp-filter'

[Colin Baxter <m43cap@yandex.com>]

>>>>> Philipp  <p.stephani2@gmail.com> writes:

    >> Am 11.04.2021 um 12:45 schrieb Colin Baxter <m43cap@yandex.com>:
    >> 
    >>>>>>> Philipp Stephani <p.stephani2@gmail.com> writes:
    >> 
    >>> Am So., 11. Apr. 2021 um 09:51 Uhr schrieb Colin Baxter
    >>> <m43cap@yandex.com>:
    >>>> 
    >>>>>>>>> Eli Zaretskii <eliz@gnu.org> writes:
    >>>> 
>>>>> From: Colin Baxter <m43cap@yandex.com> Cc: Date: Sun, 11 Apr 2021
    >>>> >> 07:45:19 +0100
>>>>> 
>>>>> I get a build with the latest pull of emacs:
>>>>> 
>>>>> Makefile:415: recipe for target 'seccomp-filter' failed make[1]:
    >>>> >> *** [seccomp-filter] Error 1 make[1]: Leaving directory >>
    >>>> '/home/redknight/git/emacs/lib-src' Makefile:396: recipe for >>
    >>>> target 'lib-src' failed make: *** [lib-src] Error 2
    >>>> 
    >>>>> Are there no error or warning messages before the
    >>>> "Makefile:415" > one?  If there are, please show all the
    >>>> messages.
    >>>> 
    >>>> Yes, sorry, I missed the earlier errors. Here is the full list
    >>>> beginning after the attempt to compile seccomp-filter:
    >>>> 
    >>>> ---------- Begin error list ------------
    >>>> 
    >>>> CCLD seccomp-filter seccomp-filter.c: In function ‘main’:
    >>>> seccomp-filter.c:142:23: error: ‘SCMP_ACT_KILL_PROCESS’
    >>>> undeclared (first use in this function) ctx = seccomp_init
    >>>> (SCMP_ACT_KILL_PROCESS); ^~~~~~~~~~~~~~~~~~~~~
    >> 
    >> 
    >>> This is an interesting failure. Looks like seccomp.h exists on
    >>> your system, but doesn't contain the right definitions?  What
    >>> does your config.log say about seccomp.h (not linux/seccomp.h)
    >>> and seccomp_init?
    >> 
    >> I have appended below the occurrences in config.log for
    >> seccomp.h. (Do you want me to attach the whole config.log in a
    >> second email?) The only other mentions are multiple lines of the
    >> form
    >> 
    >> 5090:| #define HAVE_LINUX_SECCOMP_H 1
    >> 
    >> ending with
    >> 
    >> 27758:ac_cv_header_linux_seccomp_h=yes
    >> 27771:ac_cv_header_seccomp_h=yes 29332:#define
    >> HAVE_LINUX_SECCOMP_H 1
    >> 
    >> Hope this helps.
    >> 
    >> ---------- Begin relevant portion of config.log -----------
    >> 
    >> configure:17719: checking linux/seccomp.h usability
    >> configure:17719: gcc -c -g3 -O2 -pthread -isystem
    >> /usr/include/librsvg-2.0 -isystem /usr/include/gdk-pixbuf-2.0
    >> -isystem /usr/include/libpng16 -isystem /usr/include/cairo
    >> -isystem /usr/include/glib-2.0 -isystem
    >> /usr/lib/i386-linux-gnu/glib-2.0/include -isystem
    >> /usr/include/pixman-1 -isystem /usr/include/freetype2 -isystem
    >> /usr/include/libpng16 -isystem /usr/include/cairo -isystem
    >> /usr/include/glib-2.0 -isystem
    >> /usr/lib/i386-linux-gnu/glib-2.0/include -isystem
    >> /usr/include/pixman-1 -isystem /usr/include/freetype2 -isystem
    >> /usr/include/libpng16 conftest.c >&5 configure:17719: $? = 0
    >> configure:17719: result: yes configure:17719: checking
    >> linux/seccomp.h presence configure:17719: gcc -E conftest.c
    >> configure:17719: $? = 0 configure:17719: result: yes
    >> configure:17719: checking for linux/seccomp.h configure:17719:
    >> result: yes configure:17731: checking seccomp.h usability
    >> configure:17731: gcc -c -g3 -O2 -pthread -isystem
    >> /usr/include/librsvg-2.0 -isystem /usr/include/gdk-pixbuf-2.0
    >> -isystem /usr/include/libpng16 -isystem /usr/include/cairo
    >> -isystem /usr/include/glib-2.0 -isystem
    >> /usr/lib/i386-linux-gnu/glib-2.0/include -isystem
    >> /usr/include/pixman-1 -isystem /usr/include/freetype2 -isystem
    >> /usr/include/libpng16 -isystem /usr/include/cairo -isystem
    >> /usr/include/glib-2.0 -isystem
    >> /usr/lib/i386-linux-gnu/glib-2.0/include -isystem
    >> /usr/include/pixman-1 -isystem /usr/include/freetype2 -isystem
    >> /usr/include/libpng16 conftest.c >&5 configure:17731: $? = 0
    >> configure:17731: result: yes configure:17731: checking seccomp.h
    >> presence configure:17731: gcc -E conftest.c configure:17731: $? =
    >> 0 configure:17731: result: yes configure:17731: checking for
    >> seccomp.h configure:17731: result: yes configure:17733: checking
    >> for seccomp_init in -lseccomp configure:17758: gcc -o conftest
    >> -g3 -O2 -pthread -isystem /usr/include/librsvg-2.0 -isystem
    >> /usr/include/gdk-pixbuf-2.0 -isystem /usr/include/libpng16
    >> -isystem /usr/include/cairo -isystem /usr/include/glib-2.0
    >> -isystem /usr/lib/i386-linux-gnu/glib-2.0/include -isystem
    >> /usr/include/pixman-1 -isystem /usr/include/freetype2 -isystem
    >> /usr/include/libpng16 -isystem /usr/include/cairo -isystem
    >> /usr/include/glib-2.0 -isystem
    >> /usr/lib/i386-linux-gnu/glib-2.0/include -isystem
    >> /usr/include/pixman-1 -isystem /usr/include/freetype2 -isystem
    >> /usr/include/libpng16 conftest.c -lseccomp -lX11 -lcairo >&5
    >> configure:17758: $? = 0 configure:17767: result: yes
    >> 
    >> ---------- End relevant portion of config.log ----
    >> 
    >> 


    > OK, looks like libseccomp is available and should be working.
    > Does /usr/include/seccomp.h contain at least some of the symbols
    > the compiler complains about?

Well my /usr/include/seccomp.h does contain SCMP_ACT_KILL,
SCMP_CMP_MASKED_EQ, SCMP_ACT_ALLOW, but I don't understand the contents
of the file.

Best wishes, Colin.