acinclude/pam.m4

   1 dnl
   2 dnl AUTHOR: Francesco Chemolli <kinkie@squid-cache.org>
   3 dnl
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  27 dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
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  29
  30
  31
  32 dnl check whether PAM's struct pam_conv takes a const (linux-style) or
  33 dnl non-const (solaris-style) parametrs to the conv function.
  34 dnl
  35 dnl sets the shell variable squid_cv_pam_conv_signature to either
  36 dnl "linux", "solaris" or "unknown".
  37 dnl defines the C preprocessor macro PAM_CONV_FUNC_CONST_PARM to either
  38 dnl "static" (linux-style) or the empty string (solaris-style or default)
  39
  40 AC_DEFUN([CHECK_STRUCT_PAM_CONV], [
  41   AH_TEMPLATE([PAM_CONV_FUNC_CONST_PARM],
  42     [Defined to const or empty depending on the style used by the OS to refer to the PAM message dialog func])
  43   AC_CACHE_CHECK([for PAM conversation struct signature type],
  44                   squid_cv_pam_conv_signature, [
  45     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  46 #include <security/pam_appl.h>
  47 static int
  48 password_conversation(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata_ptr) {}
  49 static struct pam_conv conv = { &password_conversation, 0 };
  50 ]])], [
  51    squid_cv_pam_conv_signature=linux
  52 ], [
  53     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
  54 #include <security/pam_appl.h>
  55 static int
  56 password_conversation(int num_msg, struct pam_message **msg, struct pam_response **resp, void *appdata_ptr) {}
  57 static struct pam_conv conv = { &password_conversation, 0 };
  58 ]])], [
  59   squid_cv_pam_conv_signature=solaris
  60  ], [
  61   squid_cv_pam_conv_signature=unknown
  62   ])
  63     ])
  64   ])
  65   case $squid_cv_pam_conv_signature in
  66     linux) AC_DEFINE([PAM_CONV_FUNC_CONST_PARM],[const]) ;;
  67     solaris) AC_DEFINE([PAM_CONV_FUNC_CONST_PARM],[]) ;;
  68     *) AC_DEFINE([PAM_CONV_FUNC_CONST_PARM],[]) ;;
  69   esac
  70 ]) dnl CHECK_STRUCT_PAM_CONV
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  72