File: check_memfd_create.m4

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dnl Checks for memfd_create() support

AC_DEFUN([CHECK_MEMFD_CREATE], [

  AC_MSG_CHECKING([for memfd_create])

  AC_LINK_IFELSE([
    AC_LANG_PROGRAM([[
      #ifndef _GNU_SOURCE
      #define _GNU_SOURCE
      #endif
      #include <sys/mman.h>
    ]], [[
      (void)memfd_create("configure test", MFD_CLOEXEC);
      return 0;
    ]])
  ], [
    AC_MSG_RESULT([yes])
    AC_DEFINE([HAVE_MEMFD_CREATE], [1], [Define if MEMFD_CREATE is supported])
    have_memfd_create=yes
  ], [
    AC_MSG_RESULT([no])
    have_memfd_create=no
  ])
])