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autotools: preparation to use memfd_create(2)

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This is a preparation to use memfd_create(2) system call for test programs
of axfer. The system call was introduced at Linux kernel v3.17 and
relatively new.

For safe, this commit adds detection of memfd_create() in autotools side
so that application can handle the case not to detect.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Sakamoto 2021-03-11 14:21:38 +09:00 committed by Jaroslav Kysela
parent 6b0f1b20ae
commit e9a4d32e29
1 changed files with 5 additions and 0 deletions
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5
configure.ac
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@ -62,6 +62,11 @@ AC_CHECK_LIB([ffado], [ffado_streaming_init], [have_ffado="yes"], [have_ffado="n
AS_IF([test x"$have_ffado" = xyes], AS_IF([test x"$have_ffado" = xyes],
[AC_DEFINE([WITH_FFADO], [1], [Define if FFADO library is available])]) [AC_DEFINE([WITH_FFADO], [1], [Define if FFADO library is available])])
# Test programs for axfer use shm by memfd_create(2). If not supported, open(2) is used alternatively.
AC_CHECK_FUNC([memfd_create], [have_memfd_create="yes"], [have_memfd_create="no"])
AS_IF([test x$have_memfd_create = xyes],
[AC_DEFINE([HAVE_MEMFD_CREATE], [1], [Define if Linux kernel supports memfd_create system call])])
AM_CONDITIONAL(HAVE_PCM, test "$have_pcm" = "yes") AM_CONDITIONAL(HAVE_PCM, test "$have_pcm" = "yes")
AM_CONDITIONAL(HAVE_MIXER, test "$have_mixer" = "yes") AM_CONDITIONAL(HAVE_MIXER, test "$have_mixer" = "yes")
AM_CONDITIONAL(HAVE_RAWMIDI, test "$have_rawmidi" = "yes") AM_CONDITIONAL(HAVE_RAWMIDI, test "$have_rawmidi" = "yes")