diff --git a/libs/curl/configure.ac b/libs/curl/configure.ac
index ce112fbcf5..179dc91f26 100644
--- a/libs/curl/configure.ac
+++ b/libs/curl/configure.ac
@@ -2043,6 +2043,34 @@ if test "x$ws2" = "xyes"; then
   LIBS="$LIBS -lws2_32"
 
 fi
+AC_DEFUN([AX_COMPILER_VENDOR],
+[
+AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
+ [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
+  # note: don't check for gcc first since some other compilers define __GNUC__
+  for ventest in intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ gnu:__GNUC__ sun:__SUNPRO_C,__SUNPRO_CC hp:__HP_cc,__HP_aCC dec:__DECC,__DECCXX,__DECC_VER,__DECCXX_VER borland:__BORLANDC__,__TURBOC__ comeau:__COMO__ cray:_CRAYC kai:__KCC lcc:__LCC__ metrowerks:__MWERKS__ sgi:__sgi,sgi microsoft:_MSC_VER watcom:__WATCOMC__ portland:__PGI; do
+    vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
+#if !($vencpp)
+      thisisanerror;
+#endif
+])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
+  done
+ ])
+])
+
+AX_COMPILER_VENDOR
+
+#  Enable 64 bit build
+AC_ARG_ENABLE(64,
+[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
+
+if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
+    if test "${enable_64}" = "yes"; then
+        CFLAGS="$CFLAGS -m64"
+        CXXFLAGS="$CXXFLAGS -m64"
+    fi
+fi
 
 AM_CONDITIONAL(CROSSCOMPILING, test x$cross_compiling = xyes)
 
diff --git a/libs/curl/lib/config.h.in b/libs/curl/lib/config.h.in
index 8602189707..4bc60b0df1 100644
--- a/libs/curl/lib/config.h.in
+++ b/libs/curl/lib/config.h.in
@@ -621,16 +621,16 @@
 /* Define to the function return type for send. */
 #undef SEND_TYPE_RETV
 
-/* The size of a `curl_off_t', as computed by sizeof. */
+/* The size of `curl_off_t', as computed by sizeof. */
 #undef SIZEOF_CURL_OFF_T
 
-/* The size of a `long', as computed by sizeof. */
+/* The size of `long', as computed by sizeof. */
 #undef SIZEOF_LONG
 
-/* The size of a `size_t', as computed by sizeof. */
+/* The size of `size_t', as computed by sizeof. */
 #undef SIZEOF_SIZE_T
 
-/* The size of a `time_t', as computed by sizeof. */
+/* The size of `time_t', as computed by sizeof. */
 #undef SIZEOF_TIME_T
 
 /* Define to 1 if you have the ANSI C header files. */
@@ -685,7 +685,7 @@
 /* type to use in place of in_addr_t if not defined */
 #undef in_addr_t
 
-/* Define to `unsigned' if <sys/types.h> does not define. */
+/* Define to `unsigned int' if <sys/types.h> does not define. */
 #undef size_t
 
 /* type to use in place of socklen_t if not defined */
diff --git a/libs/iax/configure.in b/libs/iax/configure.in
index 010a6bce47..affe9cca14 100644
--- a/libs/iax/configure.in
+++ b/libs/iax/configure.in
@@ -99,6 +99,17 @@ case "$host" in
                         IN_LINE=inline
 		;;
 esac
+#  Enable 64 bit build
+AC_ARG_ENABLE(64,
+[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
+
+if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
+    if test "${enable_64}" = "yes"; then
+        new_AM_CFLAGS="$new_AM_CFLAGS -m64"
+    fi
+fi
+
+
 AC_SUBST(new_AM_CFLAGS)
 AC_SUBST(new_AM_LDFLAGS)
 AC_SUBST(SOLINK)
diff --git a/libs/iksemel/configure.ac b/libs/iksemel/configure.ac
index fe1d369923..8a6f93cd16 100644
--- a/libs/iksemel/configure.ac
+++ b/libs/iksemel/configure.ac
@@ -55,6 +55,35 @@ if test "x$GCC" = "xyes"; then
   fi
 fi
 
+AC_DEFUN([AX_COMPILER_VENDOR],
+[
+AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
+ [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
+  # note: don't check for gcc first since some other compilers define __GNUC__
+  for ventest in intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ gnu:__GNUC__ sun:__SUNPRO_C,__SUNPRO_CC hp:__HP_cc,__HP_aCC dec:__DECC,__DECCXX,__DECC_VER,__DECCXX_VER borland:__BORLANDC__,__TURBOC__ comeau:__COMO__ cray:_CRAYC kai:__KCC lcc:__LCC__ metrowerks:__MWERKS__ sgi:__sgi,sgi microsoft:_MSC_VER watcom:__WATCOMC__ portland:__PGI; do
+    vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
+#if !($vencpp)
+      thisisanerror;
+#endif
+])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
+  done
+ ])
+])
+
+AX_COMPILER_VENDOR
+
+#  Enable 64 bit build
+AC_ARG_ENABLE(64,
+[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
+
+if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
+    if test "${enable_64}" = "yes"; then
+        CFLAGS="$CFLAGS -m64"
+        CXXFLAGS="$CXXFLAGS -m64"
+    fi
+fi
+
 dnl Generating makefiles
 AC_CONFIG_FILES([
 Makefile
diff --git a/libs/libdingaling/configure.in b/libs/libdingaling/configure.in
index e7d3d3bf18..3179e460c7 100755
--- a/libs/libdingaling/configure.in
+++ b/libs/libdingaling/configure.in
@@ -105,6 +105,17 @@ case "$host" in
                         DYNAMIC_LIB_EXTEN="so"
                         IN_LINE=inline
 esac
+
+#  Enable 64 bit build
+AC_ARG_ENABLE(64,
+[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
+
+if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
+    if test "${enable_64}" = "yes"; then
+        new_AM_CFLAGS="$new_AM_CFLAGS -m64"
+    fi
+fi
+
 AC_SUBST(new_AM_CFLAGS)
 AC_SUBST(new_AM_LDFLAGS)
 AC_SUBST(SOLINK)
diff --git a/libs/libsndfile/configure.ac b/libs/libsndfile/configure.ac
index 96b6aa0d42..180c603173 100644
--- a/libs/libsndfile/configure.ac
+++ b/libs/libsndfile/configure.ac
@@ -460,6 +460,35 @@ if test x$ac_cv_c_compiler_gnu = xyes ; then
 	AC_DEFINE_UNQUOTED([GCC_MAJOR_VERSION],${GCC_MAJOR_VERSION}, [Major version of GCC or 3 otherwise.])
 	fi
 
+AC_DEFUN([AX_COMPILER_VENDOR],
+[
+AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
+ [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
+  # note: don't check for gcc first since some other compilers define __GNUC__
+  for ventest in intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ gnu:__GNUC__ sun:__SUNPRO_C,__SUNPRO_CC hp:__HP_cc,__HP_aCC dec:__DECC,__DECCXX,__DECC_VER,__DECCXX_VER borland:__BORLANDC__,__TURBOC__ comeau:__COMO__ cray:_CRAYC kai:__KCC lcc:__LCC__ metrowerks:__MWERKS__ sgi:__sgi,sgi microsoft:_MSC_VER watcom:__WATCOMC__ portland:__PGI; do
+    vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
+#if !($vencpp)
+      thisisanerror;
+#endif
+])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
+  done
+ ])
+])
+
+AX_COMPILER_VENDOR
+
+#  Enable 64 bit build
+AC_ARG_ENABLE(64,
+[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
+
+if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
+    if test "${enable_64}" = "yes"; then
+        CFLAGS="$CFLAGS -m64"
+    fi
+fi
+
+
 CFLAGS="$CFLAGS $OS_SPECIFIC_CFLAGS"
 
 if test x"$CFLAGS" = x ; then
diff --git a/libs/sofia-sip/configure.ac b/libs/sofia-sip/configure.ac
index 3d03a4dc0a..513881ebea 100644
--- a/libs/sofia-sip/configure.ac
+++ b/libs/sofia-sip/configure.ac
@@ -230,6 +230,35 @@ AC_TYPE_SIZE_T
 
 AC_SYS_SA_LEN
 
+AC_DEFUN([AX_COMPILER_VENDOR],
+[
+AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
+ [ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=unknown
+  # note: don't check for gcc first since some other compilers define __GNUC__
+  for ventest in intel:__ICC,__ECC,__INTEL_COMPILER ibm:__xlc__,__xlC__,__IBMC__,__IBMCPP__ gnu:__GNUC__ sun:__SUNPRO_C,__SUNPRO_CC hp:__HP_cc,__HP_aCC dec:__DECC,__DECCXX,__DECC_VER,__DECCXX_VER borland:__BORLANDC__,__TURBOC__ comeau:__COMO__ cray:_CRAYC kai:__KCC lcc:__LCC__ metrowerks:__MWERKS__ sgi:__sgi,sgi microsoft:_MSC_VER watcom:__WATCOMC__ portland:__PGI; do
+    vencpp="defined("`echo $ventest | cut -d: -f2 | sed 's/,/) || defined(/g'`")"
+    AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
+#if !($vencpp)
+      thisisanerror;
+#endif
+])], [ax_cv_]_AC_LANG_ABBREV[_compiler_vendor=`echo $ventest | cut -d: -f1`; break])
+  done
+ ])
+])
+
+AX_COMPILER_VENDOR
+
+#  Enable 64 bit build
+AC_ARG_ENABLE(64,
+[AC_HELP_STRING([--enable-64],[build with 64 bit support])],[enable_64="$enable_64"],[enable_64="no"])
+
+if test "x${ax_cv_c_compiler_vendor}"  =  "xsun" ; then
+    if test "${enable_64}" = "yes"; then
+        SOFIA_CFLAGS="$SOFIA_CFLAGS -m64"
+    fi
+fi
+
+
 ### checks for library functions
 ### ----------------------------