Initial commit

1 files changed, 109 insertions, 0 deletions

diff --git a/acinclude.m4 b/acinclude.m4
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+++ b/acinclude.m4
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+# Copyright (C) 2001, 2006, 2008-2012 Sergey Poznyakoff
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+AC_DEFUN([GR_ENABLE],[
+  AC_ARG_ENABLE($1,
+                AC_HELP_STRING([--disable-$1], [Disable pam_$1]),
+                [build_$1=$enableval],
+                [build_$1=m4_if([$2],[],yes,m4_if([$3],[],probe,[$3]))])
+  m4_pushdef([upmodname],translit($1, [a-z.-], [A-Z__]))
+  m4_if([$2],[],,[if test $build_$1 != no; then
+    $2
+    test $build_$1 = probe && build_$1=no
+  fi])
+  AM_CONDITIONAL([GR_COND_]upmodname, [test "$[]build_$1" = "yes"])
+  m4_popdef([upmodname])
+])
+
+dnl GR_FLUSHLEFT -- remove all whitespace at the beginning of lines
+dnl This is useful for c-code which may include cpp statements
+dnl
+define([GR_FLUSHLEFT],
+ [changequote(`,')dnl
+patsubst(`$1', `^[      ]+')
+changequote([,])])dnl
+
+dnl GR_RESULT_ACTIONS -- generate shell code for the result of a test
+dnl   $1 -- CVAR  -- cache variable to check
+dnl   $2 -- NAME  -- if not empty, used to generate a default value TRUE:
+dnl                  `AC_DEFINE(HAVE_NAME)'
+dnl   $2 -- TRUE  -- what to do if the CVAR is not `no'
+dnl   $3 -- FALSE -- what to do otherwise; defaults to `:'
+dnl
+AC_DEFUN([GR_RESULT_ACTIONS], [
+[if test "$$1" != "" -a "$$1" != no; then
+  ]ifelse([$3], ,
+          [AC_DEFINE(HAVE_]translit($2, [a-z ./<>], [A-Z___])[,1,[FIXME])],
+          [$3])[
+else
+  ]ifelse([$4], , [:], [$4])[
+fi]])dnl
+
+dnl GR_CHECK_STRUCT_FIELD -- See if a structure has a particular field
+dnl   $1 - NAME  -- name of structure
+dnl   $2 - FIELD -- name of field to test
+dnl   $3 - INCLS -- C program text to inculde necessary files for testing
+dnl   $4 - TRUE  -- what to do if struct NAME has FIELD; defaults to 
+dnl                 `AC_DEFINE(HAVE_NAME_FIELD)'
+dnl   $5 - FALSE -- what to do if not; defaults to `:'
+dnl
+dnl NOTE: We still don't use AC_CHECK_MEMBERS, since it has (as of
+dnl autoconf 2.53) a bug which prevents it from recognizing members
+dnl of aggregate type.
+
+AC_DEFUN([GR_CHECK_STRUCT_FIELD], [
+  define([pm_CVAR], [pm_cv_struct_]translit($1_$2, [A-Z], [a-z]))dnl
+  AC_CACHE_CHECK([whether struct $1 has $2 field], pm_CVAR,
+    AC_TRY_COMPILE(GR_FLUSHLEFT([$3]),
+      [struct $1 pm_x; int pm_y = sizeof pm_x.$2;],
+      pm_CVAR[=yes], pm_CVAR[=no]))
+  GR_RESULT_ACTIONS(pm_CVAR, [$1_$2], [$4], [$5])dnl
+  undefine([pm_CVAR])])dnl
+
+dnl Arguments:
+dnl   $1     --    Library to look for
+dnl   $2     --    Function to check in the library
+dnl   $3     --    Any additional libraries that might be needed
+dnl   $4     --    Action to be taken when test succeeds
+dnl   $5     --    Action to be taken when test fails
+dnl   $6     --    Directories where the library may reside
+AC_DEFUN([GR_CHECK_LIB],
+[m4_ifval([$4], , [AH_CHECK_LIB([$1])])dnl
+AS_VAR_PUSHDEF([pm_Lib], [pm_cv_lib_$1])dnl
+AC_CACHE_CHECK([for $2 in -l$1], [pm_Lib],
+[AS_VAR_SET([pm_Lib], [no])
+ pm_check_lib_save_LIBS=$LIBS
+ for path in "" $6
+ do
+   if test -n "$path"; then
+     pm_ldflags="-L$path -l$1 $3"
+   else
+     pm_ldflags="-l$1 $3"
+   fi
+   LIBS="$pm_ldflags $pm_check_lib_save_LIBS"
+   AC_LINK_IFELSE([AC_LANG_CALL([], [$2])],
+                  [AS_VAR_SET([pm_Lib], ["$pm_ldflags"])
+                   break])
+ done             
+ LIBS=$pm_check_lib_save_LIBS])
+AS_IF([test "AS_VAR_GET([pm_Lib])" != no],
+      [m4_default([$4], [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_LIB$1))
+  LIBS="-l$1 $LIBS"
+])],
+      [$5])dnl
+AS_VAR_POPDEF([pm_Lib])dnl
+])# GR_CHECK_LIB
+
+