add --enable-64 configure flag to build 64 bit with suncc

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@6294 d0543943-73ff-0310-b7d9-9358b9ac24b2

libs/codec/gsm/configure.in

@@ -12,6 +12,35 @@ AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 AC_PROG_INSTALL
 
+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
+
 # Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC