configure.ac

   1 AC_PREREQ([2.68])
   2 AC_INIT([apply-default-acl], [0.3.0], [michael@orlitzky.com])
   3 AM_INIT_AUTOMAKE([-Wall foreign no-dist-gzip dist-xz])
   4 AC_CONFIG_SRCDIR([src/apply-default-acl.c])
   5 AC_CONFIG_FILES([Makefile src/Makefile])
   6
   7 # Checks for programs.
   8 AC_PROG_CC
   9 AM_PROG_AR
  10
  11 # Predefined header checks.
  12 AC_HEADER_STAT    # sys/stat.h
  13 AC_HEADER_STDBOOL # stdbool.h
  14 AC_HEADER_STDC    # stdlib.h string.h (implied: errno.h limits.h stdio.h)
  15
  16 # Check for header files not covered by the predefined macros above.
  17 AC_CHECK_HEADERS([ fcntl.h getopt.h libgen.h limits.h linux/xattr.h ])
  18 AC_CHECK_HEADERS([ sys/acl.h sys/libacl.h sys/types.h unistd.h ])
  19
  20 # We need openat() with O_NOFOLLOW from POSIX-2008. Without them, we
  21 # can't operate securely; I would rather refuse to be built.
  22 AC_CHECK_FUNC(openat,
  23               [],
  24               AC_MSG_ERROR(missing required openat function))
  25 AC_CHECK_DECLS([O_DIRECTORY],
  26                [],
  27                [AC_MSG_ERROR(missing required O_DIRECTORY flag in fcntl.h)],
  28                [[#include <fcntl.h>]])
  29 AC_CHECK_DECLS([O_NOFOLLOW],
  30                [],
  31                [AC_MSG_ERROR(missing required O_NOFOLLOW flag in fcntl.h)],
  32                [[#include <fcntl.h>]])
  33 AC_CHECK_DECLS([O_PATH],
  34                [],
  35                [AC_MSG_ERROR(missing required O_PATH flag in fcntl.h)],
  36                [[#define _GNU_SOURCE
  37                  #include <fcntl.h>]])
  38
  39 LT_INIT
  40 AC_OUTPUT