From 43658278ff46c04fc6a0d8f88e01bb550220527f Mon Sep 17 00:00:00 2001
From: Russell Bryant <russell@russellbryant.com>
Date: Mon, 18 Jun 2007 16:35:51 +0000
Subject: [PATCH] Merged revisions 69702 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r69702 | russell | 2007-06-18 11:35:02 -0500 (Mon, 18 Jun 2007) | 6 lines

To prevent 92138749238754 more reports of "I have unixodbc installed, but
still can't build *_odbc.so!", check for ltdl directly, instead of just listing
it as another library to include in the unixodbc check in the configure script.
This also makes ltdl show up as a dependency in menuselect so people know what
to go install.  (related to issue #9989, patch by me)

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@69703 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 apps/app_voicemail.c             |   1 +
 build_tools/menuselect-deps.in   |   1 +
 cdr/cdr_odbc.c                   |   1 +
 configure                        | 453 ++++++++++++++++++++++++++++++-
 configure.ac                     |   6 +-
 funcs/func_odbc.c                |   1 +
 include/asterisk/autoconfig.h.in |   6 +
 res/res_config_odbc.c            |   1 +
 res/res_odbc.c                   |   1 +
 9 files changed, 458 insertions(+), 13 deletions(-)

diff --git a/apps/app_voicemail.c b/apps/app_voicemail.c
index 8b934fbd846..604f64e575f 100644
--- a/apps/app_voicemail.c
+++ b/apps/app_voicemail.c
@@ -48,6 +48,7 @@ c-client (http://www.washington.edu/imap/
 <category name="MENUSELECT_OPTS_app_voicemail" displayname="Voicemail Build Options" positive_output="yes" remove_on_change="apps/app_voicemail.o">
 	<member name="ODBC_STORAGE" displayname="Storage of Voicemail using ODBC">
 		<depend>unixodbc</depend>
+		<depend>ltdl</depend>
 		<conflict>IMAP_STORAGE</conflict>
 		<defaultenabled>no</defaultenabled>
 	</member>
diff --git a/build_tools/menuselect-deps.in b/build_tools/menuselect-deps.in
index 196542fb436..addffb94e47 100644
--- a/build_tools/menuselect-deps.in
+++ b/build_tools/menuselect-deps.in
@@ -10,6 +10,7 @@ IKSEMEL=@PBX_IKSEMEL@
 IMAP_TK=@PBX_IMAP_TK@
 IXJUSER=@PBX_IXJUSER@
 KDE=@PBX_KDE@
+LTDL=@PBX_LTDL@
 NBS=@PBX_NBS@
 NETSNMP=@PBX_NETSNMP@
 NEWT=@PBX_NEWT@
diff --git a/cdr/cdr_odbc.c b/cdr/cdr_odbc.c
index d9b1cbb9ee1..d1aa1f2d17c 100644
--- a/cdr/cdr_odbc.c
+++ b/cdr/cdr_odbc.c
@@ -30,6 +30,7 @@
 
 /*** MODULEINFO
 	<depend>unixodbc</depend>
+	<depend>ltdl</depend>
  ***/
 
 #include "asterisk.h"
diff --git a/configure b/configure
index 3a9660c6c13..ed88bbd6065 100755
--- a/configure
+++ b/configure
@@ -1,5 +1,5 @@
 #! /bin/sh
-# From configure.ac Revision: 66175 .
+# From configure.ac Revision: 67029 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.61.
 #
@@ -765,6 +765,10 @@ KDE_LIB
 KDE_INCLUDE
 KDE_DIR
 PBX_KDE
+LTDL_LIB
+LTDL_INCLUDE
+LTDL_DIR
+PBX_LTDL
 MISDN_LIB
 MISDN_INCLUDE
 MISDN_DIR
@@ -1533,6 +1537,7 @@ Optional Packages:
   --with-imap=PATH        use UW IMAP Toolkit files in PATH
   --with-isdnnet=PATH     use ISDN4Linux Library files in PATH
   --with-kde=PATH         use KDE files in PATH
+  --with-ltdl=PATH        use libtool files in PATH
   --with-misdn=PATH       use mISDN User Library files in PATH
   --with-nbs=PATH         use Network Broadcast Sound files in PATH
   --with-ncurses=PATH     use ncurses files in PATH
@@ -7986,6 +7991,34 @@ PBX_KDE=0
 
 
 
+LTDL_DESCRIP="libtool"
+LTDL_OPTION="ltdl"
+
+# Check whether --with-ltdl was given.
+if test "${with_ltdl+set}" = set; then
+  withval=$with_ltdl;
+case ${withval} in
+     n|no)
+     USE_LTDL=no
+     ;;
+     y|ye|yes)
+     ac_mandatory_list="${ac_mandatory_list} LTDL"
+     ;;
+     *)
+     LTDL_DIR="${withval}"
+     ac_mandatory_list="${ac_mandatory_list} LTDL"
+     ;;
+esac
+
+fi
+
+PBX_LTDL=0
+
+
+
+
+
+
 MISDN_DESCRIP="mISDN User Library"
 MISDN_OPTION="misdn"
 
@@ -19303,6 +19336,398 @@ echo "${ECHO_T}no" >&6; }
    fi
 fi
 
+# Needed by unixodbc
+
+if test "x${PBX_LTDL}" != "x1" -a "${USE_LTDL}" != "no"; then
+   pbxlibdir=""
+   if test "x${LTDL_DIR}" != "x"; then
+      if test -d ${LTDL_DIR}/lib; then
+      	 pbxlibdir="-L${LTDL_DIR}/lib"
+      else
+      	 pbxlibdir="-L${LTDL_DIR}"
+      fi
+   fi
+   pbxfuncname="lt_dlinit"
+   if test "x${pbxfuncname}" = "x" ; then   # empty lib, assume only headers
+      AST_LTDL_FOUND=yes
+   else
+      as_ac_Lib=`echo "ac_cv_lib_ltdl_${pbxfuncname}" | $as_tr_sh`
+{ echo "$as_me:$LINENO: checking for ${pbxfuncname} in -lltdl" >&5
+echo $ECHO_N "checking for ${pbxfuncname} in -lltdl... $ECHO_C" >&6; }
+if { as_var=$as_ac_Lib; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lltdl ${pbxlibdir}  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any GCC internal prototype to avoid an error.
+   Use char because int might match the return type of a GCC
+   builtin and then its argument prototype would still apply.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+char ${pbxfuncname} ();
+int
+main ()
+{
+return ${pbxfuncname} ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (ac_try="$ac_link"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_link") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest$ac_exeext &&
+       $as_test_x conftest$ac_exeext; then
+  eval "$as_ac_Lib=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	eval "$as_ac_Lib=no"
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+ac_res=`eval echo '${'$as_ac_Lib'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
+if test `eval echo '${'$as_ac_Lib'}'` = yes; then
+  AST_LTDL_FOUND=yes
+else
+  AST_LTDL_FOUND=no
+fi
+
+   fi
+
+   if test "${AST_LTDL_FOUND}" = "yes"; then
+      LTDL_LIB="-lltdl "
+      LTDL_HEADER_FOUND="1"
+      if test "x${LTDL_DIR}" != "x"; then
+         LTDL_LIB="${pbxlibdir} ${LTDL_LIB}"
+	 LTDL_INCLUDE="-I${LTDL_DIR}/include"
+	 saved_cppflags="${CPPFLAGS}"
+	 CPPFLAGS="${CPPFLAGS} -I${LTDL_DIR}/include"
+	 if test "xltdl.h" != "x" ; then
+	    as_ac_Header=`echo "ac_cv_header_${LTDL_DIR}/include/ltdl.h" | $as_tr_sh`
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  { echo "$as_me:$LINENO: checking for ${LTDL_DIR}/include/ltdl.h" >&5
+echo $ECHO_N "checking for ${LTDL_DIR}/include/ltdl.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
+else
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ${LTDL_DIR}/include/ltdl.h usability" >&5
+echo $ECHO_N "checking ${LTDL_DIR}/include/ltdl.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <${LTDL_DIR}/include/ltdl.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ${LTDL_DIR}/include/ltdl.h presence" >&5
+echo $ECHO_N "checking ${LTDL_DIR}/include/ltdl.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <${LTDL_DIR}/include/ltdl.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ${LTDL_DIR}/include/ltdl.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ${LTDL_DIR}/include/ltdl.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ${LTDL_DIR}/include/ltdl.h" >&5
+echo $ECHO_N "checking for ${LTDL_DIR}/include/ltdl.h... $ECHO_C" >&6; }
+if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  eval "$as_ac_Header=\$ac_header_preproc"
+fi
+ac_res=`eval echo '${'$as_ac_Header'}'`
+	       { echo "$as_me:$LINENO: result: $ac_res" >&5
+echo "${ECHO_T}$ac_res" >&6; }
+
+fi
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  LTDL_HEADER_FOUND=1
+else
+  LTDL_HEADER_FOUND=0
+fi
+
+
+	 fi
+	 CPPFLAGS="${saved_cppflags}"
+      else
+	 if test "xltdl.h" != "x" ; then
+            if test "${ac_cv_header_ltdl_h+set}" = set; then
+  { echo "$as_me:$LINENO: checking for ltdl.h" >&5
+echo $ECHO_N "checking for ltdl.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_ltdl_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_ltdl_h" >&5
+echo "${ECHO_T}$ac_cv_header_ltdl_h" >&6; }
+else
+  # Is the header compilable?
+{ echo "$as_me:$LINENO: checking ltdl.h usability" >&5
+echo $ECHO_N "checking ltdl.h usability... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <ltdl.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (ac_try="$ac_compile"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_compile") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && {
+	 test -z "$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       } && test -s conftest.$ac_objext; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+	ac_header_compiler=no
+fi
+
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6; }
+
+# Is the header present?
+{ echo "$as_me:$LINENO: checking ltdl.h presence" >&5
+echo $ECHO_N "checking ltdl.h presence... $ECHO_C" >&6; }
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ltdl.h>
+_ACEOF
+if { (ac_try="$ac_cpp conftest.$ac_ext"
+case "(($ac_try" in
+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
+  *) ac_try_echo=$ac_try;;
+esac
+eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
+  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null && {
+	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
+	 test ! -s conftest.err
+       }; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+
+rm -f conftest.err conftest.$ac_ext
+{ echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6; }
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: ltdl.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: ltdl.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ltdl.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: ltdl.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: ltdl.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: ltdl.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ltdl.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: ltdl.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ltdl.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: ltdl.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ltdl.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: ltdl.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ltdl.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: ltdl.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: ltdl.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: ltdl.h: in the future, the compiler will take precedence" >&2;}
+
+    ;;
+esac
+{ echo "$as_me:$LINENO: checking for ltdl.h" >&5
+echo $ECHO_N "checking for ltdl.h... $ECHO_C" >&6; }
+if test "${ac_cv_header_ltdl_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_ltdl_h=$ac_header_preproc
+fi
+{ echo "$as_me:$LINENO: result: $ac_cv_header_ltdl_h" >&5
+echo "${ECHO_T}$ac_cv_header_ltdl_h" >&6; }
+
+fi
+if test $ac_cv_header_ltdl_h = yes; then
+  LTDL_HEADER_FOUND=1
+else
+  LTDL_HEADER_FOUND=0
+fi
+
+
+	 fi
+      fi
+      if test "x${LTDL_HEADER_FOUND}" = "x0" ; then
+         LTDL_LIB=""
+         LTDL_INCLUDE=""
+      else
+         if test "x${pbxfuncname}" = "x" ; then		# only checking headers -> no library
+	    LTDL_LIB=""
+	 fi
+         PBX_LTDL=1
+         # XXX don't know how to evaluate the description (third argument) in AC_DEFINE_UNQUOTED
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LTDL 1
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define HAVE_LTDL_VERSION
+_ACEOF
+
+      fi
+   fi
+fi
+
+
 ac_ext=cpp
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -22312,7 +22737,7 @@ if { as_var=$as_ac_Lib; eval "test \"\${$as_var+set}\" = set"; }; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_check_lib_save_LIBS=$LIBS
-LIBS="-lodbc ${pbxlibdir} -lltdl $LIBS"
+LIBS="-lodbc ${pbxlibdir}  $LIBS"
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
@@ -22377,7 +22802,7 @@ fi
    fi
 
    if test "${AST_UNIXODBC_FOUND}" = "yes"; then
-      UNIXODBC_LIB="-lodbc -lltdl"
+      UNIXODBC_LIB="-lodbc "
       UNIXODBC_HEADER_FOUND="1"
       if test "x${UNIXODBC_DIR}" != "x"; then
          UNIXODBC_LIB="${pbxlibdir} ${UNIXODBC_LIB}"
@@ -36209,6 +36634,10 @@ KDE_LIB!$KDE_LIB$ac_delim
 KDE_INCLUDE!$KDE_INCLUDE$ac_delim
 KDE_DIR!$KDE_DIR$ac_delim
 PBX_KDE!$PBX_KDE$ac_delim
+LTDL_LIB!$LTDL_LIB$ac_delim
+LTDL_INCLUDE!$LTDL_INCLUDE$ac_delim
+LTDL_DIR!$LTDL_DIR$ac_delim
+PBX_LTDL!$PBX_LTDL$ac_delim
 MISDN_LIB!$MISDN_LIB$ac_delim
 MISDN_INCLUDE!$MISDN_INCLUDE$ac_delim
 MISDN_DIR!$MISDN_DIR$ac_delim
@@ -36253,10 +36682,6 @@ PGSQL_LIB!$PGSQL_LIB$ac_delim
 PGSQL_INCLUDE!$PGSQL_INCLUDE$ac_delim
 PGSQL_DIR!$PGSQL_DIR$ac_delim
 PBX_PGSQL!$PBX_PGSQL$ac_delim
-PRI_LIB!$PRI_LIB$ac_delim
-PRI_INCLUDE!$PRI_INCLUDE$ac_delim
-PRI_DIR!$PRI_DIR$ac_delim
-PBX_PRI!$PBX_PRI$ac_delim
 _ACEOF
 
   if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -36298,6 +36723,10 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   cat >conf$$subs.sed <<_ACEOF
+PRI_LIB!$PRI_LIB$ac_delim
+PRI_INCLUDE!$PRI_INCLUDE$ac_delim
+PRI_DIR!$PRI_DIR$ac_delim
+PBX_PRI!$PBX_PRI$ac_delim
 SS7_LIB!$SS7_LIB$ac_delim
 SS7_INCLUDE!$SS7_INCLUDE$ac_delim
 SS7_DIR!$SS7_DIR$ac_delim
@@ -36391,10 +36820,6 @@ PG_CONFIG!$PG_CONFIG$ac_delim
 PTLIB_CONFIG!$PTLIB_CONFIG$ac_delim
 PWLIBDIR!$PWLIBDIR$ac_delim
 PWLIB_INCDIR!$PWLIB_INCDIR$ac_delim
-PWLIB_LIBDIR!$PWLIB_LIBDIR$ac_delim
-PWLIB_PLATFORM!$PWLIB_PLATFORM$ac_delim
-OPENH323DIR!$OPENH323DIR$ac_delim
-OPENH323_INCDIR!$OPENH323_INCDIR$ac_delim
 _ACEOF
 
   if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 97; then
@@ -36436,6 +36861,10 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   cat >conf$$subs.sed <<_ACEOF
+PWLIB_LIBDIR!$PWLIB_LIBDIR$ac_delim
+PWLIB_PLATFORM!$PWLIB_PLATFORM$ac_delim
+OPENH323DIR!$OPENH323DIR$ac_delim
+OPENH323_INCDIR!$OPENH323_INCDIR$ac_delim
 OPENH323_LIBDIR!$OPENH323_LIBDIR$ac_delim
 OPENH323_SUFFIX!$OPENH323_SUFFIX$ac_delim
 OPENH323_BUILD!$OPENH323_BUILD$ac_delim
@@ -36455,7 +36884,7 @@ CURL_CONFIG!$CURL_CONFIG$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 17; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 21; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
diff --git a/configure.ac b/configure.ac
index 9d0a628c5f3..50945031aa6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -193,6 +193,7 @@ AST_EXT_LIB_SETUP([IKSEMEL], [Iksemel Jabber Library], [iksemel])
 AST_EXT_LIB_SETUP([IMAP_TK], [UW IMAP Toolkit], [imap])
 AST_EXT_LIB_SETUP([ISDNNET], [ISDN4Linux Library], [isdnnet])
 AST_EXT_LIB_SETUP([KDE], [KDE], [kde])
+AST_EXT_LIB_SETUP([LTDL], [libtool], [ltdl])
 AST_EXT_LIB_SETUP([MISDN], [mISDN User Library], [misdn])
 AST_EXT_LIB_SETUP([NBS], [Network Broadcast Sound], [nbs])
 AST_EXT_LIB_SETUP([NCURSES], [ncurses], [ncurses])
@@ -580,6 +581,9 @@ if test "${USE_IMAP_TK}" != "no"; then
    fi
 fi
 
+# Needed by unixodbc
+AST_EXT_LIB_CHECK([LTDL], [ltdl], [lt_dlinit], [ltdl.h], [])
+
 AC_LANG_PUSH(C++)
 
 if test "${USE_KDE}" != "no"; then
@@ -671,7 +675,7 @@ fi
 
 AST_EXT_LIB_CHECK([NEWT], [newt], [newtBell], [newt.h])
 
-AST_EXT_LIB_CHECK([UNIXODBC], [odbc], [SQLConnect], [sql.h], [-lltdl])
+AST_EXT_LIB_CHECK([UNIXODBC], [odbc], [SQLConnect], [sql.h], [])
 
 AST_EXT_LIB_CHECK([OGG], [ogg], [ogg_sync_init], [])
 
diff --git a/funcs/func_odbc.c b/funcs/func_odbc.c
index 5206c2492e5..4852a08673d 100644
--- a/funcs/func_odbc.c
+++ b/funcs/func_odbc.c
@@ -28,6 +28,7 @@
 
 /*** MODULEINFO
 	<depend>unixodbc</depend>
+	<depend>ltdl</depend>
 	<depend>res_odbc</depend>
  ***/
 
diff --git a/include/asterisk/autoconfig.h.in b/include/asterisk/autoconfig.h.in
index 915c0c7d895..85618b9e35e 100644
--- a/include/asterisk/autoconfig.h.in
+++ b/include/asterisk/autoconfig.h.in
@@ -226,6 +226,12 @@
 /* Define to 1 if you have the `localtime_r' function. */
 #undef HAVE_LOCALTIME_R
 
+/* Define this to indicate the ${LTDL_DESCRIP} library */
+#undef HAVE_LTDL
+
+/* Define to indicate the ${LTDL_DESCRIP} library version */
+#undef HAVE_LTDL_VERSION
+
 /* Define to 1 if you have the <malloc.h> header file. */
 #undef HAVE_MALLOC_H
 
diff --git a/res/res_config_odbc.c b/res/res_config_odbc.c
index 825ca39c4fd..ae712042aa1 100644
--- a/res/res_config_odbc.c
+++ b/res/res_config_odbc.c
@@ -30,6 +30,7 @@
 
 /*** MODULEINFO
 	<depend>unixodbc</depend>
+	<depend>ltdl</depend>
 	<depend>res_odbc</depend>
  ***/
 
diff --git a/res/res_odbc.c b/res/res_odbc.c
index 36b5d116d5d..a62f8976c69 100644
--- a/res/res_odbc.c
+++ b/res/res_odbc.c
@@ -31,6 +31,7 @@
 
 /*** MODULEINFO
 	<depend>unixodbc</depend>
+	<depend>ltdl</depend>
  ***/
 
 #include "asterisk.h"