20 files changed, 609 insertions, 0 deletions
diff --git a/src/external/crypto.m4 b/src/external/crypto.m4
new file mode 100644
index 000000000..d1bcf40ac
--- /dev/null
+++ b/src/external/crypto.m4
@@ -0,0 +1,13 @@
+AC_ARG_ENABLE(crypto,
+    [  --enable-crypto         Use OpenSSL crypto instead of NSS],
+    [CRYPTO="$enableval"],
+    [CRYPTO="no"]
+)
+
+if test x$CRYPTO != xyes; then
+    PKG_CHECK_MODULES([NSS],[nss],[have_nss=1],[have_nss=])
+else
+    PKG_CHECK_MODULES([CRYPTO],[libcrypto],[have_crypto=1],[have_crypto=])
+fi
+AM_CONDITIONAL([HAVE_NSS], [test x$have_nss != x])
+AM_CONDITIONAL([HAVE_CRYPTO], [test x$have_crypto != x])
diff --git a/src/external/docbook.m4 b/src/external/docbook.m4
new file mode 100644
index 000000000..cae89feb1
--- /dev/null
+++ b/src/external/docbook.m4
@@ -0,0 +1,35 @@
+dnl Checks for tools needed to generate manual pages
+AC_DEFUN([CHECK_XML_TOOLS],
+[
+  AC_PATH_PROG([XSLTPROC], [xsltproc])
+  if test ! -x "$XSLTPROC"; then
+    AC_MSG_ERROR([Could not find xsltproc])
+  fi
+
+  AC_PATH_PROG([XMLLINT], [xmllint])
+  if test ! -x "$XMLLINT"; then
+    AC_MSG_ERROR([Could not find xmllint])
+  fi
+
+  AC_PATH_PROG([XMLCATALOG], [xmlcatalog])
+  if test ! -x "$XMLCATALOG"; then
+    AC_MSG_ERROR([Could not find xmlcatalog])
+  fi
+])
+
+dnl Usage:
+dnl   CHECK_STYLESHEET_URI(FILE, URI, [FRIENDLY-NAME])
+dnl Checks if the XML catalog given by FILE exists and
+dnl if a particular URI appears in the XML catalog
+AC_DEFUN([CHECK_STYLESHEET],
+[
+  AC_CHECK_FILE($1, [], [AC_MSG_ERROR([could not find XML catalog])])
+
+  AC_MSG_CHECKING([for ifelse([$3],,[$2],[$3]) in XML catalog])
+  if AC_RUN_LOG([$XMLCATALOG --noout "$1" "$2" >&2]); then
+    AC_MSG_RESULT([yes])
+  else
+    AC_MSG_ERROR([could not find ifelse([$3],,[$2],[$3]) in XML catalog])
+  fi
+])
+
diff --git a/src/external/krb5.m4 b/src/external/krb5.m4
new file mode 100644
index 000000000..84bb44174
--- /dev/null
+++ b/src/external/krb5.m4
@@ -0,0 +1,62 @@
+AC_SUBST(KRB5_CFLAGS)
+AC_SUBST(KRB5_LIBS)
+
+if test x$KRB5_LIBS != x; then
+    KRB5_PASSED_LIBS=$KRB5_LIBS
+fi
+
+if test x$KRB5_CFLAGS != x; then
+    KRB5_PASSED_CFLAGS=$KRB5_CFLAGS
+fi
+
+AC_PATH_PROG(KRB5_CONFIG, krb5-config)
+AC_MSG_CHECKING(for working krb5-config)
+if test -x "$KRB5_CONFIG"; then
+  KRB5_CFLAGS="`$KRB5_CONFIG --cflags`"
+  KRB5_LIBS="`$KRB5_CONFIG --libs`"
+  AC_MSG_RESULT(yes)
+else
+    if test x$KRB5_PASSED_LIBS = x; then
+        AC_MSG_ERROR(no. Please install MIT kerberos devel package)
+    fi
+fi
+
+if test x$KRB5_PASSED_LIBS != x; then
+    KRB5_LIBS=$KRB5_PASSED_LIBS
+fi
+
+if test x$KRB5_PASSED_CFLAGS != x; then
+    KRB5_CFLAGS=$KRB5_PASSED_CFLAGS
+fi
+
+AC_ARG_VAR([KRB5_CFLAGS], [C compiler flags for kerberos, overriding krb5-config])dnl
+AC_ARG_VAR([KRB5_LIBS], [linker flags for kerberos, overriding krb5-config])dnl
+
+SAVE_CFLAGS=$CFLAGS
+SAVE_LIBS=$LIBS
+CFLAGS="$CFLAGS $KRB5_CFLAGS"
+LIBS="$LIBS $KRB5_LIBS"
+AC_CHECK_HEADERS([krb5.h krb5/krb5.h])
+AC_CHECK_FUNCS([krb5_get_init_creds_opt_alloc krb5_get_error_message \
+                krb5_free_unparsed_name])
+CFLAGS=$SAVE_CFLAGS
+LIBS=$SAVE_LIBS
+
+if test x$ac_cv_header_krb5_h != xyes -a x$ac_cv_header_krb5_krb5_h != xyes
+then
+  AC_MSG_ERROR(you must have Kerberos 5 header files to build sssd)
+fi
+
+AC_ARG_ENABLE([krb5-locator-plugin],
+              [AS_HELP_STRING([--disable-krb5-locator-plugin],
+                              [do not build Kerberos locator plugin])],
+              [build_locator=$enableval],
+              [build_locator=yes])
+
+AC_CHECK_HEADER([krb5/locate_plugin.h],
+                [have_locate_plugin=yes],
+                [have_locate_plugin=no]
+                [AC_MSG_NOTICE([Kerberos locator plugin cannot be build])])
+AM_CONDITIONAL([BUILD_KRB5_LOCATOR_PLUGIN],
+               [test x$have_locate_plugin == xyes -a x$build_locator == xyes])
+
diff --git a/src/external/ldap.m4 b/src/external/ldap.m4
new file mode 100644
index 000000000..87d95fa8b
--- /dev/null
+++ b/src/external/ldap.m4
@@ -0,0 +1,63 @@
+dnl AC_SUBST(LDAP_LIBS)
+dnl
+dnl AC_CHECK_HEADERS(lber.h ldap.h, , AC_MSG_ERROR("could not locate ldap header files please install devel package"))
+dnl
+dnl AC_CHECK_LIB(lber, main, LDAP_LIBS="-llber $LDAP_LIBS")
+dnl AC_CHECK_LIB(ldap, main, LDAP_LIBS="-lldap $LDAP_LIBS")
+dnl
+dnl ---------------------------------------------------------------------------
+dnl - Check for Mozilla LDAP or OpenLDAP SDK
+dnl ---------------------------------------------------------------------------
+
+AC_CHECK_LIB(ldap, ldap_search, with_ldap=yes)
+dnl Check for other libraries we need to link with to get the main routines.
+test "$with_ldap" != "yes" && { AC_CHECK_LIB(ldap, ldap_open, [with_ldap=yes with_ldap_lber=yes], , -llber) }
+test "$with_ldap" != "yes" && { AC_CHECK_LIB(ldap, ldap_open, [with_ldap=yes with_ldap_lber=yes with_ldap_krb=yes], , -llber -lkrb) }
+test "$with_ldap" != "yes" && { AC_CHECK_LIB(ldap, ldap_open, [with_ldap=yes with_ldap_lber=yes with_ldap_krb=yes with_ldap_des=yes], , -llber -lkrb -ldes) }
+dnl Recently, we need -lber even though the main routines are elsewhere,
+dnl because otherwise be get link errors w.r.t. ber_pvt_opt_on.  So just
+dnl check for that (it's a variable not a fun but that doesn't seem to
+dnl matter in these checks)  and stick in -lber if so.  Can't hurt (even to
+dnl stick it in always shouldn't hurt, I don't think) ... #### Someone who
+dnl #### understands LDAP needs to fix this properly.
+test "$with_ldap_lber" != "yes" && { AC_CHECK_LIB(lber, ber_pvt_opt_on, with_ldap_lber=yes) }
+
+if test "$with_ldap" = "yes"; then
+  if test "$with_ldap_des" = "yes" ; then
+    OPENLDAP_LIBS="${OPENLDAP_LIBS} -ldes"
+  fi
+  if test "$with_ldap_krb" = "yes" ; then
+    OPENLDAP_LIBS="${OPENLDAP_LIBS} -lkrb"
+  fi
+  if test "$with_ldap_lber" = "yes" ; then
+    OPENLDAP_LIBS="${OPENLDAP_LIBS} -llber"
+  fi
+  OPENLDAP_LIBS="${OPENLDAP_LIBS} -lldap"
+else
+  AC_MSG_ERROR([OpenLDAP not found])
+fi
+
+AC_SUBST(OPENLDAP_LIBS)
+
+SAVE_CFLAGS=$CFLAGS
+SAVE_LIBS=$LIBS
+CFLAGS="$CFLAGS $OPENLDAP_CFLAGS"
+LIBS="$LIBS $OPENLDAP_LIBS"
+AC_CHECK_FUNCS([ldap_control_create])
+AC_CHECK_MEMBERS([struct ldap_conncb.lc_arg],
+                 [AC_RUN_IFELSE(
+                   [AC_LANG_PROGRAM(
+                     [[ #include <ldap.h> ]],
+                     [[
+                       struct ldap_conncb cb;
+                       return ldap_set_option(NULL, LDAP_OPT_CONNECT_CB, &cb);
+                     ]] )],
+                   [AC_DEFINE([HAVE_LDAP_CONNCB], [1],
+                     [Define if LDAP connection callbacks are available])],
+                   [AC_MSG_WARN([Found broken callback implementation])],
+                   [])],
+                 [], [[#include <ldap.h>]])
+
+CFLAGS=$SAVE_CFLAGS
+LIBS=$SAVE_LIBS
+
diff --git a/src/external/libcares.m4 b/src/external/libcares.m4
new file mode 100644
index 000000000..657deac59
--- /dev/null
+++ b/src/external/libcares.m4
@@ -0,0 +1,20 @@
+AC_SUBST(CARES_OBJ)
+AC_SUBST(CARES_LIBS)
+AC_SUBST(CARES_CFLAGS)
+
+AC_CHECK_HEADERS(ares.h,
+    [AC_CHECK_LIB([cares], [ares_init], [ CARES_LIBS="-lcares" ], [AC_MSG_ERROR([No usable c-ares library found])])],
+    [AC_MSG_ERROR([c-ares header files are not installed])]
+)
+
+dnl Check if this particular version of c-ares supports the generic ares_free_data function
+AC_CHECK_LIB([cares],
+             [ares_free_data],
+             [AC_DEFINE([HAVE_ARES_DATA], 1, [Does c-ares have ares_free_data()?])
+             ],
+             [
+                ares_data=1
+             ]
+)
+
+AM_CONDITIONAL(BUILD_ARES_DATA, test x$ares_data = x1)
diff --git a/src/external/libcollection.m4 b/src/external/libcollection.m4
new file mode 100644
index 000000000..8fc37e8c7
--- /dev/null
+++ b/src/external/libcollection.m4
@@ -0,0 +1,12 @@
+AC_SUBST(SYSTEM_COLLECTION_OBJ)
+AC_SUBST(SYSTEM_COLLECTION_CFLAGS)
+AC_SUBST(SYSTEM_COLLECTION_LIBS)
+
+PKG_CHECK_MODULES(SYSTEM_COLLECTION, collection >= 0.4.0,
+    have_system_collection=true,
+    have_system_collection=false
+    )
+# This is future-compatible. Right now, we'll force the use of our
+# in-tree copy. When collection is split off as its own source package, we'll
+# fix this test
+AM_CONDITIONAL(HAVE_SYSTEM_COLLECTION, test x$have_system_collection = xtrue_FORCE_IN_TREE)
diff --git a/src/external/libdhash.m4 b/src/external/libdhash.m4
new file mode 100644
index 000000000..e3afdac38
--- /dev/null
+++ b/src/external/libdhash.m4
@@ -0,0 +1,12 @@
+AC_SUBST(SYSTEM_DHASH_OBJ)
+AC_SUBST(SYSTEM_DHASH_CFLAGS)
+AC_SUBST(SYSTEM_DHASH_LIBS)
+
+PKG_CHECK_MODULES(SYSTEM_DHASH, dhash >= 0.4.0,
+    have_system_dhash=true,
+    have_system_dhash=false
+    )
+# This is future-compatible. Right now, we'll force the use of our
+# in-tree copy. When dhash is split off as its own source package, we'll
+# fix this test
+AM_CONDITIONAL(HAVE_SYSTEM_DHASH, test x$have_system_dhash = xtrue_FORCE_IN_TREE)
diff --git a/src/external/libini_config.m4 b/src/external/libini_config.m4
new file mode 100644
index 000000000..20291efa5
--- /dev/null
+++ b/src/external/libini_config.m4
@@ -0,0 +1,12 @@
+AC_SUBST(SYSTEM_INI_CONFIG_OBJ)
+AC_SUBST(SYSTEM_INI_CONFIG_CFLAGS)
+AC_SUBST(SYSTEM_INI_CONFIG_LIBS)
+
+PKG_CHECK_MODULES(SYSTEM_INI_CONFIG, ini_config >= 0.4.0,
+    have_system_ini_config=true,
+    have_system_ini_config=false
+    )
+# This is future-compatible. Right now, we'll force the use of our
+# in-tree copy. When ini_config is split off as its own source package, we'll
+# fix this test
+AM_CONDITIONAL(HAVE_SYSTEM_INI_CONFIG, test x$have_system_ini_config = xtrue_FORCE_IN_TREE)
diff --git a/src/external/libldb.m4 b/src/external/libldb.m4
new file mode 100644
index 000000000..0679e1d19
--- /dev/null
+++ b/src/external/libldb.m4
@@ -0,0 +1,28 @@
+AC_SUBST(LDB_OBJ)
+AC_SUBST(LDB_CFLAGS)
+AC_SUBST(LDB_LIBS)
+
+PKG_CHECK_MODULES(LDB, ldb >= 0.9.2)
+
+AC_CHECK_HEADERS(ldb.h ldb_module.h,
+   [AC_CHECK_LIB(ldb, ldb_init, [LDB_LIBS="-lldb"], , -ltevent) ],
+   [AC_MSG_ERROR([LDB header files are not installed])]
+)
+
+AC_ARG_WITH([ldb-lib-dir],
+            [AC_HELP_STRING([--with-ldb-lib-dir=PATH],
+                            [Path to store ldb modules [${libdir}/ldb]]
+                           )
+            ]
+           )
+
+if test x"$with_ldb_lib_dir" != x; then
+    ldblibdir=$with_ldb_lib_dir
+else
+    ldblibdir="`$PKG_CONFIG --variable=modulesdir ldb`"
+    if ! test -d $ldblibdir; then
+        ldblibdir="${libdir}/ldb"
+    fi
+fi
+AC_MSG_NOTICE([ldb lib directory: $ldblibdir])
+AC_SUBST(ldblibdir)
diff --git a/src/external/libpcre.m4 b/src/external/libpcre.m4
new file mode 100644
index 000000000..5917c8cfd
--- /dev/null
+++ b/src/external/libpcre.m4
@@ -0,0 +1,15 @@
+PCRE_OBJ=""
+AC_SUBST(PCRE_OBJ)
+AC_SUBST(PCRE_LIBS)
+AC_SUBST(PCRE_CFLAGS)
+
+PKG_CHECK_MODULES(PCRE, libpcre)
+PKG_CHECK_EXISTS(libpcre >= 7,
+                 [AC_MSG_NOTICE([PCRE version is 7 or higher])],
+                 [AC_MSG_NOTICE([PCRE version is below 7])
+                  AC_DEFINE([HAVE_LIBPCRE_LESSER_THAN_7],
+                            1,
+                            [Define if libpcre version is less than 7])])
+
+AC_CHECK_HEADERS(pcre.h)
+AC_CHECK_LIB(pcre, pcre_compile, [ PCRE_LIBS="-lpcre" ], [AC_MSG_ERROR([PCRE is required])])
diff --git a/src/external/libpopt.m4 b/src/external/libpopt.m4
new file mode 100644
index 000000000..e59b2610e
--- /dev/null
+++ b/src/external/libpopt.m4
@@ -0,0 +1,9 @@
+POPT_OBJ=""
+AC_SUBST(POPT_OBJ)
+AC_SUBST(POPT_LIBS)
+AC_SUBST(POPT_CFLAGS)
+
+AC_CHECK_HEADERS([popt.h],
+    [AC_CHECK_LIB(popt, poptGetContext, [ POPT_LIBS="-lpopt" ], [AC_MSG_ERROR([POPT must support poptGetContext])])],
+    [AC_MSG_ERROR([POPT development libraries not installed])]
+)
diff --git a/src/external/libtalloc.m4 b/src/external/libtalloc.m4
new file mode 100644
index 000000000..a4c5b8a9d
--- /dev/null
+++ b/src/external/libtalloc.m4
@@ -0,0 +1,7 @@
+AC_SUBST(TALLOC_OBJ)
+AC_SUBST(TALLOC_CFLAGS)
+AC_SUBST(TALLOC_LIBS)
+
+AC_CHECK_HEADER(talloc.h,
+   [AC_CHECK_LIB(talloc, talloc_init, [TALLOC_LIBS="-ltalloc"]) ],
+   [PKG_CHECK_MODULES(TALLOC, talloc)])
diff --git a/src/external/libtdb.m4 b/src/external/libtdb.m4
new file mode 100644
index 000000000..196bc5ccb
--- /dev/null
+++ b/src/external/libtdb.m4
@@ -0,0 +1,8 @@
+AC_SUBST(TDB_OBJ)
+AC_SUBST(TDB_CFLAGS)
+AC_SUBST(TDB_LIBS)
+
+AC_CHECK_HEADERS([tdb.h],
+   [AC_CHECK_LIB(tdb, tdb_repack, [TDB_LIBS="-ltdb"], [AC_MSG_ERROR([TDB must support tdb_repack])]) ],
+   [PKG_CHECK_MODULES(TDB, tdb >= 1.1.3)]
+)
diff --git a/src/external/libtevent.m4 b/src/external/libtevent.m4
new file mode 100644
index 000000000..6a0e36af8
--- /dev/null
+++ b/src/external/libtevent.m4
@@ -0,0 +1,7 @@
+AC_SUBST(TEVENT_OBJ)
+AC_SUBST(TEVENT_CFLAGS)
+AC_SUBST(TEVENT_LIBS)
+
+AC_CHECK_HEADER(tevent.h,
+   [AC_CHECK_LIB(tevent, tevent_context_init, [TEVENT_LIBS="-ltevent"]) ],
+   [PKG_CHECK_MODULES(TEVENT, tevent)])
diff --git a/src/external/pam.m4 b/src/external/pam.m4
new file mode 100644
index 000000000..40c8fd0dc
--- /dev/null
+++ b/src/external/pam.m4
@@ -0,0 +1,6 @@
+AC_SUBST(PAM_LIBS)
+
+AC_CHECK_HEADERS([security/pam_appl.h security/pam_misc.h security/pam_modules.h],
+    [AC_CHECK_LIB(pam, pam_get_item, [ PAM_LIBS="-lpam" ], [AC_MSG_ERROR([PAM must support pam_get_item])])],
+    [AC_MSG_ERROR([PAM development libraries not installed])]
+)
diff --git a/src/external/pkg.m4 b/src/external/pkg.m4
new file mode 100644
index 000000000..a8b3d06c8
--- /dev/null
+++ b/src/external/pkg.m4
@@ -0,0 +1,156 @@
+# pkg.m4 - Macros to locate and utilise pkg-config.            -*- Autoconf -*-
+# 
+# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
+#
+# 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 of the License, 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/>.
+#
+# As a special exception to the GNU General Public License, if you
+# distribute this file as part of a program that contains a
+# configuration script generated by Autoconf, you may include it under
+# the same distribution terms that you use for the rest of that program.
+
+# PKG_PROG_PKG_CONFIG([MIN-VERSION])
+# ----------------------------------
+AC_DEFUN([PKG_PROG_PKG_CONFIG],
+[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
+m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
+AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
+fi
+if test -n "$PKG_CONFIG"; then
+	_pkg_min_version=m4_default([$1], [0.9.0])
+	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
+	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+		AC_MSG_RESULT([yes])
+	else
+		AC_MSG_RESULT([no])
+		PKG_CONFIG=""
+	fi
+		
+fi[]dnl
+])# PKG_PROG_PKG_CONFIG
+
+# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+#
+# Check to see whether a particular set of modules exists.  Similar
+# to PKG_CHECK_MODULES(), but does not set variables or print errors.
+#
+#
+# Similar to PKG_CHECK_MODULES, make sure that the first instance of
+# this or PKG_CHECK_MODULES is called, or make sure to call
+# PKG_CHECK_EXISTS manually
+# --------------------------------------------------------------
+AC_DEFUN([PKG_CHECK_EXISTS],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+if test -n "$PKG_CONFIG" && \
+    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
+  m4_ifval([$2], [$2], [:])
+m4_ifvaln([$3], [else
+  $3])dnl
+fi])
+
+
+# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
+# ---------------------------------------------
+m4_define([_PKG_CONFIG],
+[if test -n "$PKG_CONFIG"; then
+    if test -n "$$1"; then
+        pkg_cv_[]$1="$$1"
+    else
+        PKG_CHECK_EXISTS([$3],
+                         [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
+			 [pkg_failed=yes])
+    fi
+else
+	pkg_failed=untried
+fi[]dnl
+])# _PKG_CONFIG
+
+# _PKG_SHORT_ERRORS_SUPPORTED
+# -----------------------------
+AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
+if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
+        _pkg_short_errors_supported=yes
+else
+        _pkg_short_errors_supported=no
+fi[]dnl
+])# _PKG_SHORT_ERRORS_SUPPORTED
+
+
+# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
+# [ACTION-IF-NOT-FOUND])
+#
+#
+# Note that if there is a possibility the first call to
+# PKG_CHECK_MODULES might not happen, you should be sure to include an
+# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
+#
+#
+# --------------------------------------------------------------
+AC_DEFUN([PKG_CHECK_MODULES],
+[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
+AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
+AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
+
+pkg_failed=no
+AC_MSG_CHECKING([for $1])
+
+_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
+_PKG_CONFIG([$1][_LIBS], [libs], [$2])
+
+m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
+and $1[]_LIBS to avoid the need to call pkg-config.
+See the pkg-config man page for more details.])
+
+if test $pkg_failed = yes; then
+        _PKG_SHORT_ERRORS_SUPPORTED
+        if test $_pkg_short_errors_supported = yes; then
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
+        else 
+	        $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
+        fi
+	# Put the nasty error message in config.log where it belongs
+	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
+
+	ifelse([$4], , [AC_MSG_ERROR(dnl
+[Package requirements ($2) were not met:
+
+$$1_PKG_ERRORS
+
+Consider adjusting the PKG_CONFIG_PATH environment variable if you
+installed software in a non-standard prefix.
+
+_PKG_TEXT
+])],
+		[AC_MSG_RESULT([no])
+                $4])
+elif test $pkg_failed = untried; then
+	ifelse([$4], , [AC_MSG_FAILURE(dnl
+[The pkg-config script could not be found or is too old.  Make sure it
+is in your PATH or set the PKG_CONFIG environment variable to the full
+path to pkg-config.
+
+_PKG_TEXT
+
+To get pkg-config, see <http://www.freedesktop.org/software/pkgconfig>.])],
+		[$4])
+else
+	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
+	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
+        AC_MSG_RESULT([yes])
+	ifelse([$3], , :, [$3])
+fi[]dnl
+])# PKG_CHECK_MODULES
diff --git a/src/external/platform.m4 b/src/external/platform.m4
new file mode 100644
index 000000000..71b4f2c85
--- /dev/null
+++ b/src/external/platform.m4
@@ -0,0 +1,29 @@
+AC_ARG_WITH([os],
+            [AC_HELP_STRING([--with-os=OS_TYPE], [Type of your operation system (fedora|redhat|suse)])]
+           )
+osname=""
+if test x"$with_os" != x ; then
+    if test x"$with_os" == xfedora -o \
+            x"$with_os" == xredhat -o \
+            x"$with_os" == xsuse ; then
+        osname=$with_os
+    else
+        AC_MSG_ERROR([Illegal value -$with_os- for option --with-os])
+    fi
+fi
+
+if test x"$osname" = x ; then
+    if test -f /etc/fedora-release ; then
+        osname="fedora"
+    elif test -f /etc/redhat-release ; then
+        osname="redhat"
+    elif test -f /etc/SuSE-release ; then
+        osname="suse"
+    fi
+
+    AC_MSG_NOTICE([Detected operation system type: $osname])
+fi
+
+AM_CONDITIONAL([HAVE_FEDORA], [test x"$osname" == xfedora])
+AM_CONDITIONAL([HAVE_REDHAT], [test x"$osname" == xredhat])
+AM_CONDITIONAL([HAVE_SUSE], [test x"$osname" == xsuse])
diff --git a/src/external/python.m4 b/src/external/python.m4
new file mode 100644
index 000000000..db5986385
--- /dev/null
+++ b/src/external/python.m4
@@ -0,0 +1,58 @@
+dnl Check for python-config and substitute needed CFLAGS and LDFLAGS
+dnl Usage:
+dnl     AM_PYTHON_CONFIG
+
+AC_DEFUN([AM_PYTHON_CONFIG],
+[   AC_SUBST(PYTHON_CFLAGS)
+    AC_SUBST(PYTHON_LIBS)
+
+dnl We need to check for python build flags using distutils.sysconfig
+dnl We cannot use python-config, as it was not available on older
+dnl versions of python
+    AC_PATH_PROG(PYTHON, python)
+    AC_MSG_CHECKING([for working python])
+    if test -x "$PYTHON"; then
+        PYTHON_CFLAGS="`$PYTHON -c \"from distutils import sysconfig; \
+            print '-I' + sysconfig.get_python_inc() + \
+            ' -I' + sysconfig.get_python_inc(plat_specific=True) + ' ' + \
+            sysconfig.get_config_var('BASECFLAGS')\"`"
+        PYTHON_LIBS="`$PYTHON -c \"from distutils import sysconfig; \
+            print \\\" \\\".join(sysconfig.get_config_var('LIBS').split() + \
+            sysconfig.get_config_var('SYSLIBS').split()) + \
+            ' -lpython' + sysconfig.get_config_var('VERSION')\"`"
+            AC_MSG_RESULT([yes])
+    else
+        AC_MSG_ERROR([no. Please install python devel package])
+    fi
+])
+
+dnl Taken from GNOME sources
+dnl a macro to check for ability to create python extensions
+dnl  AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
+dnl function also defines PYTHON_INCLUDES
+AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
+[AC_REQUIRE([AM_PATH_PYTHON])
+    AC_MSG_CHECKING(for headers required to compile python extensions)
+
+    dnl deduce PYTHON_INCLUDES
+    py_prefix=`$PYTHON -c "import sys; print sys.prefix"`
+    py_exec_prefix=`$PYTHON -c "import sys; print sys.exec_prefix"`
+    PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
+    if test "$py_prefix" != "$py_exec_prefix"; then
+        PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
+    fi
+
+    AC_SUBST(PYTHON_INCLUDES)
+
+    dnl check if the headers exist:
+    save_CPPFLAGS="$CPPFLAGS"
+    CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
+    AC_TRY_CPP([#include <Python.h>],dnl
+               [AC_MSG_RESULT([found])
+                $1],dnl
+               [AC_MSG_RESULT([not found])
+               $2])
+    CPPFLAGS="$save_CPPFLAGS"
+])
+
+
diff --git a/src/external/selinux.m4 b/src/external/selinux.m4
new file mode 100644
index 000000000..0c5d5294e
--- /dev/null
+++ b/src/external/selinux.m4
@@ -0,0 +1,13 @@
+dnl A macro to check the availability of SELinux
+AC_DEFUN([AM_CHECK_SELINUX],
+[
+    AC_CHECK_HEADERS(selinux/selinux.h,
+                     [AC_CHECK_LIB(selinux, is_selinux_enabled,
+                                            [SELINUX_LIBS="-lselinux"],
+                                            [AC_MSG_ERROR([SELinux library is missing])]
+                                  )
+                     ],
+                     [AC_MSG_ERROR([SELinux headers are missing])])
+    AC_SUBST(SELINUX_LIBS)
+])
+
diff --git a/src/external/sizes.m4 b/src/external/sizes.m4
new file mode 100644
index 000000000..53df61ded
--- /dev/null
+++ b/src/external/sizes.m4
@@ -0,0 +1,44 @@
+# Solaris needs HAVE_LONG_LONG defined
+AC_CHECK_TYPES(long long)
+
+AC_CHECK_SIZEOF(int)
+AC_CHECK_SIZEOF(char)
+AC_CHECK_SIZEOF(short)
+AC_CHECK_SIZEOF(long)
+AC_CHECK_SIZEOF(long long)
+
+if test $ac_cv_sizeof_long_long -lt 8 ; then
+AC_MSG_ERROR([SSSD requires long long of 64-bits])
+fi
+
+AC_CHECK_TYPE(uint_t, unsigned int)
+AC_CHECK_TYPE(int8_t, char)
+AC_CHECK_TYPE(uint8_t, unsigned char)
+AC_CHECK_TYPE(int16_t, short)
+AC_CHECK_TYPE(uint16_t, unsigned short)
+
+if test $ac_cv_sizeof_int -eq 4 ; then
+AC_CHECK_TYPE(int32_t, int)
+AC_CHECK_TYPE(uint32_t, unsigned int)
+elif test $ac_cv_size_long -eq 4 ; then
+AC_CHECK_TYPE(int32_t, long)
+AC_CHECK_TYPE(uint32_t, unsigned long)
+else
+AC_MSG_ERROR([LIBREPLACE no 32-bit type found])
+fi
+
+AC_CHECK_TYPE(int64_t, long long)
+AC_CHECK_TYPE(uint64_t, unsigned long long)
+
+AC_CHECK_TYPE(size_t, unsigned int)
+AC_CHECK_TYPE(ssize_t, int)
+
+AC_CHECK_SIZEOF(off_t)
+AC_CHECK_SIZEOF(size_t)
+AC_CHECK_SIZEOF(ssize_t)
+
+AC_CHECK_TYPE(intptr_t, long long)
+AC_CHECK_TYPE(uintptr_t, unsigned long long)
+AC_CHECK_TYPE(ptrdiff_t, unsigned long long)
+
+