Updated for Tcl 7.5a2 and Tk 4.1a2

1 files changed, 571 insertions, 113 deletions

diff --git a/gdb/aclocal.m4 b/gdb/aclocal.m4
index 19ba7ed..d23d084 100644
--- a/gdb/aclocal.m4
+++ b/gdb/aclocal.m4
@@ -1,147 +1,605 @@
-AC_DEFUN(CYGNUS_PATH_TK, [
+dnl This file is duplicated in four places:
+dnl * gdb/aclocal.m4
+dnl * gdb/testsuite/aclocal.m4
+dnl * expect/aclocal.m4
+dnl * dejagnu/aclocal.m4
+dnl Consider modifying all copies in parallel.
+dnl written by Rob Savoye <rob@cygnus.com> for Cygnus Support
+dnl CYGNUS LOCAL: This gets the right posix flag for gcc
+AC_DEFUN(CY_AC_TCL_LYNX_POSIX,
+[AC_REQUIRE([AC_PROG_CC])AC_REQUIRE([AC_PROG_CPP])
+AC_MSG_CHECKING([to see if this is LynxOS])
+AC_CACHE_VAL(ac_cv_os_lynx,
+[AC_EGREP_CPP(yes,
+[/*
+ * The old Lynx "cc" only defines "Lynx", but the newer one uses "__Lynx__"
+ */
+#if defined(__Lynx__) || defined(Lynx)
+yes
+#endif
+], ac_cv_os_lynx=yes, ac_cv_os_lynx=no)])
 #
-# Ok, lets find the tk source trees so we can use the headers
-# If the directory (presumably symlink) named "tk" exists, use that one
-# in preference to any others.  Same logic is used when choosing library
-# and again with Tcl.
+if test "$ac_cv_os_lynx" = "yes" ; then
+  AC_MSG_RESULT(yes)
+  AC_DEFINE(LYNX)
+  AC_MSG_CHECKING([whether -mposix or -X is available])
+  AC_CACHE_VAL(ac_cv_c_posix_flag,
+  [AC_TRY_COMPILE(,[
+  /*
+   * This flag varies depending on how old the compiler is.
+   * -X is for the old "cc" and "gcc" (based on 1.42).
+   * -mposix is for the new gcc (at least 2.5.8).
+   */
+  #if defined(__GNUC__) && __GNUC__ >= 2
+  choke me
+  #endif
+  ], ac_cv_c_posix_flag=" -mposix", ac_cv_c_posix_flag=" -X")])
+  CC="$CC $ac_cv_c_posix_flag"
+  AC_MSG_RESULT($ac_cv_c_posix_flag)
+  else
+  AC_MSG_RESULT(no)
+fi
+])
 #
-AC_CHECKING(for Tk source directory)
-TKHDIR=""
-for i in `ls -d ${srcdir}/../tk* 2>/dev/null` ${srcdir}/../tk ; do
-  if test -f $i/tk.h ; then
-    TKHDIR="-I$i"
-  fi
-done
-# if we can't find it, see if one is installed
-if test x"$TKHDIR" = x ; then
-  installed=0
-  if test -f $prefix/include/tk.h; then
-    installed=1 TKHDIR="-I$prefix/include"
+# Sometimes the native compiler is a bogus stub for gcc or /usr/ucb/cc. This
+# makes configure think it's cross compiling. If --target wasn't used, then
+# we can't configure, so something is wrong.
+AC_DEFUN(CY_AC_C_CROSS,
+[# If we cannot run a trivial program, we must be cross compiling.
+AC_MSG_CHECKING(whether cross-compiling)
+AC_CACHE_VAL(ac_cv_c_cross,[
+AC_TRY_RUN([
+  main(){return(0);}],
+  ac_cv_c_cross=no, ac_cv_c_cross=yes, ac_cv_c_cross=yes)
+])
+if test x"${target}" = x"${host}" -a x"${ac_cv_c_cross}" = x"yes"; then
+  dnl this hack is cause the message is so long we don't call AC_MSG_ERROR
+  echo "configure: error: You need to specify --target to cross compile," 1>&2;
+  echo "	or the native compiler is broken" 1>&2;
+  exit 1;
+else
+  cross_compiling=$ac_cv_c_cross
+  AC_MSG_RESULT($ac_cv_c_cross)
+fi
+])
+AC_DEFUN(CY_AC_PATH_TCLH, [
+#
+# Ok, lets find the tcl source trees so we can use the headers
+# Warning: transition of version 9 to 10 will break this algorithm
+# because 10 sorts before 9. We also look for just tcl. We have to
+# be careful that we don't match stuff like tclX by accident.
+# the alternative search directory is involked by --with-tclinclude
+#
+no_tcl=true
+AC_MSG_CHECKING(for Tcl private headers)
+AC_ARG_WITH(tclinclude, [  --with-tclinclude       directory where tcl private headers are], with_tclinclude=${withval})
+AC_CACHE_VAL(ac_cv_c_tclh,[
+# first check to see if --with-tclinclude was specified
+if test x"${with_tclinclude}" != x ; then
+  if test -f ${with_tclinclude}/tclInt.h ; then
+    ac_cv_c_tclh=`(cd ${with_tclinclude}; pwd)`
   else
-  AC_HEADER_CHECK(tk.h, installed=1)
+    AC_MSG_ERROR([${with_tclinclude} directory doesn't contain private headers])
   fi
-  if test $installed -eq 0 ; then
-    TKHDIR="# no Tk directory found"
-    AC_MSG_WARN(Can't find Tk directory)
+fi
+# next check in private source directory
+#
+# since ls returns lowest version numbers first, reverse its output
+if test x"${ac_cv_c_tclh}" = x ; then
+  for i in \
+		${srcdir}/../tcl \
+		`ls -dr ${srcdir}/../tcl[[0-9]]* 2>/dev/null` \
+		${srcdir}/../../tcl \
+		`ls -dr ${srcdir}/../../tcl[[0-9]]* 2>/dev/null` \
+		${srcdir}/../../../tcl \
+		`ls -dr ${srcdir}/../../../tcl[[0-9]]* 2>/dev/null ` ; do
+    if test -f $i/tclInt.h ; then
+      ac_cv_c_tclh=`(cd $i; pwd)`
+      break
+    fi
+    # Tcl 7.5 and greater puts headers in subdirectory.
+    if test -f $i/generic/tclInt.h ; then
+       ac_cv_c_tclh=`(cd $i; pwd)`/generic
+    fi
+  done
+fi
+# finally check in a few common install locations
+#
+# since ls returns lowest version numbers first, reverse its output
+if test x"${ac_cv_c_tclh}" = x ; then
+  for i in \
+		`ls -dr /usr/local/src/tcl[[0-9]]* 2>/dev/null` \
+		`ls -dr /usr/local/lib/tcl[[0-9]]* 2>/dev/null` \
+		/usr/local/src/tcl \
+		/usr/local/lib/tcl \
+		${prefix}/include ; do
+    if test -f $i/tclInt.h ; then
+      ac_cv_c_tclh=`(cd $i; pwd)`
+      break
+    fi
+  done
+fi
+# see if one is installed
+if test x"${ac_cv_c_tclh}" = x ; then
+   AC_HEADER_CHECK(tclInt.h, ac_cv_c_tclh=installed, ac_cv_c_tclh="")
+fi
+])
+if test x"${ac_cv_c_tclh}" = x ; then
+  TCLHDIR="# no Tcl private headers found"
+  AC_MSG_ERROR([Can't find Tcl private headers])
+fi
+if test x"${ac_cv_c_tclh}" != x ; then
+  no_tcl=""
+  if test x"${ac_cv_c_tkh}" = x"installed" ; then
+    AC_MSG_RESULT([is installed])
+    TCLHDIR=""
+  else
+    AC_MSG_RESULT([found in ${ac_cv_c_tclh}])
+    # this hack is cause the TCLHDIR won't print if there is a "-I" in it.
+    TCLHDIR="-I${ac_cv_c_tclh}"
   fi
 fi
-if test x"$TKHDIR" != x ; then
-  AC_MSG_RESULT(Setting TKHDIR to be $i)
+
+AC_MSG_CHECKING([Tcl version])
+rm -rf tclmajor tclminor
+orig_includes="$CPPFLAGS"
+
+if test x"${TCLHDIR}" != x ; then
+  CPPFLAGS="$CPPFLAGS $TCLHDIR"
 fi
 
+AC_TRY_RUN([
+#include <stdio.h>
+#include "tcl.h"
+main() {
+	FILE *maj = fopen("tclmajor","w");
+	FILE *min = fopen("tclminor","w");
+	fprintf(maj,"%d",TCL_MAJOR_VERSION);
+	fprintf(min,"%d",TCL_MINOR_VERSION);
+	fclose(maj);
+	fclose(min);
+	return 0;
+}],
+	tclmajor=`cat tclmajor`
+	tclminor=`cat tclminor`
+	tclversion=$tclmajor.$tclminor
+	AC_MSG_RESULT($tclversion)
+	rm -f tclmajor tclminor
+,
+	AC_MSG_RESULT([can't happen])
+,
+	AC_MSG_ERROR([can't be cross compiled])
+)
+CPPFLAGS="${orig_includes}"
+
+AC_PROVIDE([$0])
+AC_SUBST(TCLHDIR)
+])
+AC_DEFUN(CY_AC_PATH_TCLLIB, [
 #
-# Ok, lets find the tk library
+# Ok, lets find the tcl library
 # First, look for one uninstalled.  
+# the alternative search directory is invoked by --with-tcllib
 #
-TKLIB=""
-AC_CHECKING(for Tk library)
-for i in `ls -d ../tk* 2>/dev/null` ../tk ; do
-  if test -f "$i/Makefile" ; then
-    TKLIB=$i/libtk.a
+
+if test $tclmajor -ge 7 -a $tclminor -ge 4 ; then
+  installedtcllibroot=tcl$tclversion
+else
+  installedtcllibroot=tcl
+fi
+
+if test x"${no_tcl}" = x ; then
+  # we reset no_tcl incase something fails here
+  no_tcl=true
+  AC_ARG_WITH(tcllib, [  --with-tcllib           directory where the tcl library is],
+         with_tcllib=${withval})
+  AC_MSG_CHECKING([for Tcl library])
+  AC_CACHE_VAL(ac_cv_c_tcllib,[
+  # First check to see if --with-tcllib was specified.
+  # This requires checking for both the installed and uninstalled name-styles
+  # since we have no idea if it's installed or not.
+  if test x"${with_tcllib}" != x ; then
+    if test -f "${with_tcllib}/lib$installedtcllibroot.so" ; then
+      ac_cv_c_tcllib=`(cd ${with_tcllib}; pwd)`/lib$installedtcllibroot.so
+    elif test -f "${with_tcllib}/libtcl.so" ; then
+      ac_cv_c_tcllib=`(cd ${with_tcllib}; pwd)`/libtcl.so
+    # then look for a freshly built statically linked library
+    # if Makefile exists we assume its configured and libtcl will be built first.
+    elif test -f "${with_tcllib}/lib$installedtcllibroot.a" ; then
+      ac_cv_c_tcllib=`(cd ${with_tcllib}; pwd)`/lib$installedtcllibroot.a
+    elif test -f "${with_tcllib}/libtcl.a" ; then
+      ac_cv_c_tcllib=`(cd ${with_tcllib}; pwd)`/libtcl.a
+    else
+      AC_MSG_ERROR([${with_tcllib} directory doesn't contain libraries])
+    fi
   fi
-done    
-# If not found, look for installed version
-if test x"$TKLIB" = x ; then
-dnl This doesn't work because of unresolved symbols.
-dnl  AC_HAVE_LIBRARY(libtk.a, installed=1, installed=0)
-  if test -f $prefix/lib/libtk.a; then
-    installed=1
-  else
-    installed=0
+  # then check for a private Tcl library
+  # Since these are uninstalled, use the simple lib name root.
+  if test x"${ac_cv_c_tcllib}" = x ; then
+    for i in \
+		../tcl \
+		`ls -dr ../tcl[[0-9]]* 2>/dev/null` \
+		../../tcl \
+		`ls -dr ../../tcl[[0-9]]* 2>/dev/null` \
+		../../../tcl \
+		`ls -dr ../../../tcl[[0-9]]* 2>/dev/null` ; do
+      # Tcl 7.5 and greater puts library in subdir.  Look there first.
+      if test -f "$i/unix/libtcl.so" ; then
+	 ac_cv_c_tcllib=`(cd $i; pwd)`/unix/libtcl.so
+	 break
+      elif test -f "$i/unix/libtcl.a" -o -f "$i/unix/Makefile"; then
+	 ac_cv_c_tcllib=`(cd $i; pwd)`/unix/libtcl.a
+	 break
+      # look for a freshly built dynamically linked library
+      elif test -f "$i/libtcl.so" ; then
+        ac_cv_c_tcllib=`(cd $i; pwd)`/libtcl.so
+	break
+
+      # then look for a freshly built statically linked library
+      # if Makefile exists we assume its configured and libtcl will be
+      # built first.
+      elif test -f "$i/libtcl.a" -o -f "$i/Makefile" ; then
+        ac_cv_c_tcllib=`(cd $i; pwd)`/libtcl.a
+	break
+      fi
+    done
   fi
-  if test $installed -eq 1 ; then
-    TKLIB="-ltk"
+  # check in a few common install locations
+  if test x"${ac_cv_c_tcllib}" = x ; then
+    for i in `ls -d ${prefix}/lib /usr/local/lib 2>/dev/null` ; do
+      # first look for a freshly built dynamically linked library
+      if test -f "$i/lib$installedtcllibroot.so" ; then
+        ac_cv_c_tcllib=`(cd $i; pwd)`/lib$installedtcllibroot.so
+	break
+      # then look for a freshly built statically linked library
+      # if Makefile exists we assume its configured and libtcl will be built first.
+      elif test -f "$i/lib$installedtcllibroot.a" -o -f "$i/Makefile" ; then
+        ac_cv_c_tcllib=`(cd $i; pwd)`/lib$installedtcllibroot.a
+	break
+      fi
+    done
   fi
-fi
+  # check in a few other private locations
+  if test x"${ac_cv_c_tcllib}" = x ; then
+    for i in \
+		${srcdir}/../tcl \
+		`ls -dr ${srcdir}/../tcl[[0-9]]* 2>/dev/null` ; do
+      # Tcl 7.5 and greater puts library in subdir.  Look there first.
+      if test -f "$i/unix/libtcl.so" ; then
+	 ac_cv_c_tcllib=`(cd $i; pwd)`/unix/libtcl.so
+	 break
+      elif test -f "$i/unix/libtcl.a" -o -f "$i/unix/Makefile"; then
+	 ac_cv_c_tcllib=`(cd $i; pwd)`/unix/libtcl.a
+	 break
+      # look for a freshly built dynamically linked library
+      elif test -f "$i/libtcl.so" ; then
+        ac_cv_c_tcllib=`(cd $i; pwd)`/libtcl.so
+	break
 
-# If still not found, assume Tk simply hasn't been built yet
-if test x"$TKLIB" = x ; then
-  for i in `ls -d ../tk* 2>/dev/null` ../tk ; do
-    if test -f "$i/tk.h" ; then
-      TKLIB=$i/libtk.a
+      # then look for a freshly built statically linked library
+      # if Makefile exists we assume its configured and libtcl will be
+      # built first.
+      elif test -f "$i/libtcl.a" -o -f "$i/Makefile" ; then
+        ac_cv_c_tcllib=`(cd $i; pwd)`/libtcl.a
+	break
+      fi
+    done
   fi
-  done    
-fi
 
-if test x"$TKLIB" = x ; then
-    TKLIB="# no Tk library found"
-    AC_MSG_WARN(Can't find Tk library)
-else
-    AC_MSG_RESULT(setting TKLIB to be $TKLIB)
-    no_tk=
+  # see if one is conveniently installed with the compiler
+  if test x"${ac_cv_c_tcllib}" = x ; then	
+    orig_libs="$LIBS"
+    LIBS="$LIBS -l$installedtcllibroot -lm"    
+    AC_TRY_RUN([
+    Tcl_AppInit()
+    { exit(0); }], ac_cv_c_tcllib="-l$installedtcllibroot", ac_cv_c_tcllib=""
+    , ac_cv_c_tclib="-l$installedtcllibroot")
+    LIBS="${orig_libs}"
+   fi
+  ])
+  if test x"${ac_cv_c_tcllib}" = x ; then
+    TCLLIB="# no Tcl library found"
+    AC_MSG_WARN(Can't find Tcl library)
+  else
+    TCLLIB=${ac_cv_c_tcllib}
+    AC_MSG_RESULT(found $TCLLIB)
+    no_tcl=
+  fi
 fi
 
-AC_SUBST(TKHDIR)
-AC_SUBST(TKLIB)
+AC_PROVIDE([$0])
+AC_SUBST(TCLLIB)
 ])
-
-
-AC_DEFUN(CYGNUS_PATH_TCL, [
-#
-# Ok, lets find the tcl source trees so we can use the headers
+AC_DEFUN(CY_AC_PATH_TKH, [
 #
-# Warning: transition of version 9 to 10 will break this algorithm
-# because 10 sorts before 9.
+# Ok, lets find the tk source trees so we can use the headers
+# If the directory (presumably symlink) named "tk" exists, use that one
+# in preference to any others.  Same logic is used when choosing library
+# and again with Tcl. The search order is the best place to look first, then in
+# decreasing significance. The loop breaks if the trigger file is found.
+# Note the gross little conversion here of srcdir by cd'ing to the found
+# directory. This converts the path from a relative to an absolute, so
+# recursive cache variables for the path will work right. We check all
+# the possible paths in one loop rather than many seperate loops to speed
+# things up.
+# the alternative search directory is invoked by --with-tkinclude
 #
-AC_CHECKING(for Tcl source directory)
-TCLHDIR=""
-for i in `ls -d ${srcdir}/../tcl* 2>/dev/null` ${srcdir}/../tcl ; do
-  if test -f $i/tclInt.h ; then
-    TCLHDIR="-I$i"
-  fi
-done
-# if we can't find it, see if one is installed
-if test x"$TCLHDIR" = x ; then
-  installed=0
-  if test -f $prefix/include/tclInt.h; then
-    installed=1 TCLHDIR="-I$prefix/include"
+AC_MSG_CHECKING(for Tk private headers)
+AC_ARG_WITH(tkinclude, [  --with-tkinclude        directory where the tk private headers are],
+            with_tkinclude=${withval})
+no_tk=true
+AC_CACHE_VAL(ac_cv_c_tkh,[
+# first check to see if --with-tkinclude was specified
+if test x"${with_tkinclude}" != x ; then
+  if test -f ${with_tkinclude}/tk.h ; then
+    ac_cv_c_tkh=`(cd ${with_tkinclude}; pwd)`
   else
-  AC_HEADER_CHECK(tclInt.h, installed=1)
+    AC_MSG_ERROR([${with_tkinclude} directory doesn't contain private headers])
   fi
-  if test $installed -eq 0 ; then
-    TCLHDIR="# no Tcl directory found"
-    AC_MSG_WARN(Can't find Tcl directory)
+fi
+# next check in private source directory
+#
+# since ls returns lowest version numbers first, reverse the entire list
+# and search for the worst fit, overwriting it with better fits as we find them
+if test x"${ac_cv_c_tkh}" = x ; then
+  for i in \
+		${srcdir}/../tk \
+		`ls -dr ${srcdir}/../tk[[0-9]]* 2>/dev/null` \
+		${srcdir}/../../tk \
+		`ls -dr ${srcdir}/../../tk[[0-9]]* 2>/dev/null` \
+		${srcdir}/../../../tk \
+		`ls -dr ${srcdir}/../../../tk[[0-9]]* 2>/dev/null ` ; do
+    if test -f $i/tk.h ; then
+      ac_cv_c_tkh=`(cd $i; pwd)`
+      break
+    fi
+    # Tk 4.1 and greater puts this in a subdir.
+    if test -f $i/generic/tk.h; then
+       ac_cv_c_tkh=`(cd $i; pwd)`/generic
+    fi
+  done
+fi
+# finally check in a few common install locations
+#
+# since ls returns lowest version numbers first, reverse the entire list
+# and search for the worst fit, overwriting it with better fits as we find them
+if test x"${ac_cv_c_tkh}" = x ; then
+  for i in \
+		`ls -dr /usr/local/src/tk[[0-9]]* 2>/dev/null` \
+		`ls -dr /usr/local/lib/tk[[0-9]]* 2>/dev/null` \
+		/usr/local/src/tk \
+		/usr/local/lib/tk \
+		${prefix}/include ; do
+    if test -f $i/tk.h ; then
+      ac_cv_c_tkh=`(cd $i; pwd)`
+      break
+    fi
+  done
+fi
+# see if one is installed
+if test x"${ac_cv_c_tkh}" = x ; then
+  AC_HEADER_CHECK(tk.h, ac_cv_c_tkh=installed)
+fi
+])
+if test x"${ac_cv_c_tkh}" != x ; then
+  no_tk=""
+  if test x"${ac_cv_c_tkh}" = x"installed" ; then
+    AC_MSG_RESULT([is installed])
+    TKHDIR=""
+  else
+    AC_MSG_RESULT([found in $ac_cv_c_tkh])
+    # this hack is cause the TKHDIR won't print if there is a "-I" in it.
+    TKHDIR="-I${ac_cv_c_tkh}"
   fi
 else
-  AC_MSG_RESULT(setting TCLHDIR to be $i)
+  TKHDIR="# no Tk directory found"
+  AC_MSG_WARN([Can't find Tk private headers])
+  no_tk=true
 fi
 
+# if Tk is installed, extract the major/minor version
+if test x"${no_tk}" = x ; then
+AC_MSG_CHECKING([Tk version])
+rm -rf tkmajor tkminor
+orig_includes="$CPPFLAGS"
+
+if test x"${TCLHDIR}" != x ; then
+  CPPFLAGS="$CPPFLAGS $TCLHDIR"
+fi
+if test x"${TKHDIR}" != x ; then
+  CPPFLAGS="$CPPFLAGS $TKHDIR"
+fi
+if test x"${x_includes}" != x -a x"${x_includes}" != xNONE ; then
+  CPPFLAGS="$CPPFLAGS -I$x_includes"
+fi
+
+AC_TRY_RUN([
+#include <stdio.h>
+#include "tk.h"
+  main() {
+	FILE *maj = fopen("tkmajor","w");
+	FILE *min = fopen("tkminor","w");
+	fprintf(maj,"%d",TK_MAJOR_VERSION);
+	fprintf(min,"%d",TK_MINOR_VERSION);
+	fclose(maj);
+	fclose(min);
+	return 0;
+}],
+	tkmajor=`cat tkmajor`
+	tkminor=`cat tkminor`
+	tkversion=$tkmajor.$tkminor
+	AC_MSG_RESULT($tkversion)
+	rm -f tkmajor tkminor
+,
+	AC_MSG_ERROR([
+cannot compile a simple X program - suspect your xmkmf is
+misconfigured and is incorrectly reporting the location of your X
+include or libraries - report this to your system admin]) ,
+	AC_MSG_ERROR([can't be cross compiled])
+)
+CPPFLAGS="${orig_includes}"
+fi
+
+AC_PROVIDE([$0])
+AC_SUBST(TKHDIR)
+])
+AC_DEFUN(CY_AC_PATH_TKLIB, [
+AC_REQUIRE([CY_AC_PATH_TCL])
 #
-# Ok, lets find the tcl library
-# First, look for the latest uninstalled
+# Ok, lets find the tk library
+# First, look for the latest private (uninstalled) copy
+# Notice that the destinations in backwards priority since the tests have
+# no break.
+# Then we look for either .a, .so, or Makefile.  A Makefile is acceptable
+# is it indicates the target has been configured and will (probably)
+# soon be built.  This allows an entire tree of Tcl software to be
+# configured at once and then built.
+# the alternative search directory is invoked by --with-tklib
 #
-TCLLIB=""
-AC_CHECKING(for Tcl library)
-for i in `ls -d ../tcl* 2>/dev/null` ../tcl ; do
-  if test -f "$i/Makefile" ; then
-    TCLLIB=$i/libtcl.a
+
+if test x"${no_tk}" = x ; then
+  # reset no_tk incase something fails here
+  no_tk="true"
+
+  if test $tkmajor -ge 4 ; then
+    installedtklibroot=tk$tkversion
+  else
+    installedtkllibroot=tk
   fi
-done    
-# If not found, look for installed version
-if test x"$TCLLIB" = x ; then
-dnl Don't use this, since we can't use it for libtk.a.
-dnl  AC_HAVE_LIBRARY(libtcl.a, installed=1, installed=0)
-  if test -f $prefix/lib/libtcl.a; then installed=1; else installed=0; fi
-  if test $installed -eq 1 ; then
-    TCLLIB="-ltcl"
+
+  AC_ARG_WITH(tklib, [  --with-tklib            directory where the tk library is],
+              with_tklib=${withval})
+  AC_MSG_CHECKING([for Tk library])
+  AC_CACHE_VAL(ac_cv_c_tklib,[
+  # first check to see if --with-tklib was specified
+  # This requires checking for both the installed and uninstalled name-styles
+  # since we have no idea if it's installed or not.
+  if test x"${with_tklib}" != x ; then
+    if test -f "${with_tklib}/lib$installedtklibroot.so" ; then
+      ac_cv_c_tklib=`(cd ${with_tklib}; pwd)`/lib$installedtklibroot.so
+      no_tk=""
+    elif test -f "${with_tklib}/libtk.so" ; then
+      ac_cv_c_tklib=`(cd ${with_tklib}; pwd)`/libtk.so
+      no_tk=""
+    # then look for a freshly built statically linked library
+    # if Makefile exists we assume its configured and libtk will be built
+    elif test -f "${with_tklib}/lib$installedtklibroot.a" ; then
+      ac_cv_c_tklib=`(cd ${with_tklib}; pwd)`/lib$installedtklibroot.a
+      no_tk=""
+    elif test -f "${with_tklib}/libtk.a" ; then
+      ac_cv_c_tklib=`(cd ${with_tklib}; pwd)`/libtk.a
+      no_tk=""
+    else
+      AC_MSG_ERROR([${with_tklib} directory doesn't contain libraries])
+    fi
   fi
-fi
-# If still not found, assume Tcl simply hasn't been built yet
-if test x"$TCLLIB" = x ; then
-  for i in `ls -d ../tcl* 2>/dev/null` ../tcl ; do
-    if test -f "$i/tcl.h" ; then
-      TCLLIB=$i/libtcl.a
+  # then check for a private Tk library
+  # Since these are uninstalled, use the simple lib name root.
+  if test x"${ac_cv_c_tklib}" = x ; then
+    for i in \
+		../tk \
+		`ls -dr ../tk[[0-9]]* 2>/dev/null` \
+		../../tk \
+		`ls -dr ../../tk[[0-9]]* 2>/dev/null` \
+		../../../tk \
+		`ls -dr ../../../tk[[0-9]]* 2>/dev/null` ; do
+      # Tk 4.1 and greater puts things in subdirs.  Check these first.
+      if test -f "$i/unix/libtk.so" ; then
+	 ac_cv_c_tklib=`(cd $i; pwd)`/unix/libtk.so
+	 no_tk=
+	 break
+      elif test -f "$i/unix/libtk.a" -o -f "$i/unix/Makefile"; then
+	 ac_cv_c_tklib=`(cd $i; pwd)`/unix/libtk.a
+	 no_tk=
+	 break
+      # look for a freshly built dynamically linked library
+      elif test -f "$i/libtk.so" ; then
+        ac_cv_c_tklib=`(cd $i; pwd)`/libtk.so
+        no_tk=
+	break
+      # then look for a freshly built statically linked library
+      # if Makefile exists we assume its configured and libtk will be built 
+      elif test -f "$i/libtk.a" -o -f "$i/Makefile" ; then
+        ac_cv_c_tklib=`(cd $i; pwd)`/libtk.a
+        no_tk=""
+ 	break
+      fi
+    done
+  fi
+  # finally check in a few common install locations
+  if test x"${ac_cv_c_tklib}" = x ; then
+    for i in `ls -d ${prefix}/lib /usr/local/lib 2>/dev/null` ; do
+      # first look for a freshly built dynamically linked library
+      if test -f "$i/lib$installedtklibroot.so" ; then
+        ac_cv_c_tklib=`(cd $i; pwd)`/lib$installedtklibroot.so
+        no_tk=""
+	break
+      # then look for a freshly built statically linked library
+      # if Makefile exists, we assume it's configured and libtcl will be built 
+      elif test -f "$i/lib$installedtklibroot.a" -o -f "$i/Makefile" ; then
+        ac_cv_c_tklib=`(cd $i; pwd)`/lib$installedtklibroot.a
+        no_tk=""
+ 	break
+      fi
+    done
+  fi
+  # check in a few other private locations
+  if test x"${ac_cv_c_tklib}" = x ; then
+    for i in \
+		${srcdir}/../tk \
+		`ls -dr ${srcdir}/../tk[[0-9]]* 2>/dev/null` ; do
+      # Tk 4.1 and greater puts things in subdirs.  Check these first.
+      if test -f "$i/unix/libtk.so" ; then
+	 ac_cv_c_tklib=`(cd $i; pwd)`/unix/libtk.so
+	 no_tk=
+	 break
+      elif test -f "$i/unix/libtk.a" -o -f "$i/unix/Makefile"; then
+	 ac_cv_c_tcllib=`(cd $i; pwd)`/unix/libtk.a
+	 no_tk=
+	 break
+      # look for a freshly built dynamically linked library
+      elif test -f "$i/libtk.so" ; then
+        ac_cv_c_tklib=`(cd $i; pwd)`/libtk.so
+        no_tk=""
+	break
+      # then look for a freshly built statically linked library
+      # if Makefile exists, we assume it's configured and libtcl will be built 
+      elif test -f "$i/libtk.a" -o -f "$i/Makefile" ; then
+        ac_cv_c_tklib=`(cd $i; pwd)`/libtk.a
+        no_tk=""
+ 	break
+      fi
+    done
+  fi
+  # see if one is conveniently installed with the compiler
+  if test x"${ac_cv_c_tklib}" = x ; then
+       AC_REQUIRE([AC_PATH_X])
+       orig_libs="$LIBS"
+       LIBS="$LIBS -l$installedtklibroot $x_libraries $ac_cv_c_tcllib -lm"    
+       AC_TRY_RUN([
+       Tcl_AppInit()
+       { exit(0); }], ac_cv_c_tklib="-l$installedtklibroot", ac_cv_c_tklib=""
+       , ac_cv_c_tklib="-l$installedtklibroot")
+       LIBS="${orig_libs}"
+   fi
+  ])
+  if test x"${ac_cv_c_tklib}" = x ; then
+    TKLIB="# no Tk library found"
+    AC_MSG_WARN(Can't find Tk library)
+  else
+    TKLIB=$ac_cv_c_tklib
+    AC_MSG_RESULT(found $TKLIB)
+    no_tk=
   fi
-  done    
-fi
-
-if test x"$TCLLIB" = x ; then
-    TCLLIB="# no Tcl library found"
-    AC_MSG_WARN(Can't find Tcl library)
-else
-    AC_MSG_RESULT(setting TCLLIB to be $TCLLIB)
 fi
-
-AC_SUBST(TCLHDIR)
-AC_SUBST(TCLLIB)
-])
\ No newline at end of file
+AC_PROVIDE([$0])
+AC_SUBST(TKLIB)
+])
+AC_DEFUN(CY_AC_PATH_TK, [
+  CY_AC_PATH_TKH
+  CY_AC_PATH_TKLIB
+])
+AC_DEFUN(CY_AC_PATH_TCL, [
+  CY_AC_PATH_TCLH
+  CY_AC_PATH_TCLLIB
+])