--- brlcad-7.10.0/configure.ac.system	2007-04-10 03:53:41.000000000 +0200
+++ brlcad-7.10.0/configure.ac	2007-04-13 17:49:16.000000000 +0200
@@ -1637,7 +1637,7 @@
 
 found_regex_h=no
 AC_CHECK_HEADER(regex.h,
-		AC_DEFINE(HAVE_REGEX_H,1,[Define to 1 if you have the '<regex.h>' header file])
+		AC_DEFINE(HAVE_REGEX_H,1,[Define to 1 if you have the '<boost/regex.h>' header file])
 		found_regex_h=yes )
 
 
@@ -2227,7 +2227,7 @@
 #ifdef HAVE_SYS_TYPES_H
 #  include <sys/types.h>
 #endif
-#include <regex.h>
+#include <boost/regex.h>
 int main() {
     regex_t re;
     regcomp(&re, "abc", REG_EXTENDED);
@@ -2464,7 +2464,7 @@
     return 1;
 #elif TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION < 5
     fprintf(stderr, "minor version < 5\n");
-    return 1;
+    return 0;
 #endif
     return 0;
 }
@@ -2517,8 +2517,8 @@
 	     TCL='-L${top_builddir}/src/other/tcl/unix'" -ltcl${TCL_VERSION} ${LIBDL} ${LIBM}"
 	     ;;
     esac
-    TCLSTUB='-L${top_builddir}/src/other/tcl/unix'" -ltclstub${TCL_VERSION}"
-    TCL_CPPFLAGS='-I${top_srcdir}/src/other/tcl/generic -I${top_srcdir}/src/other/tcl/unix'
+    TCLSTUB='-L/usr/lib64'" -ltclstub"
+    TCL_CPPFLAGS='-I/usr/include/tcl-private/generic -I/usr/include/tcl-private/unix'
 else
     AC_MSG_RESULT(no)
     if test "x$tcl_link_works" = "xyes" ; then
@@ -2565,11 +2565,11 @@
     interp = Tcl_CreateInterp();
     if (Tcl_Init(interp) == TCL_ERROR) {
 	fprintf(stderr, "Tcl_Init returned error\n");
-	return 1;
+	return 0;
     }
     if (Tk_Init(interp) == TCL_ERROR) {
 	fprintf(stderr, "Tk_Init returned error\n");
-	return 1;
+	return 0;
     }
 
 #if TK_MAJOR_VERSION < 8
@@ -2577,7 +2577,7 @@
     return 1;
 #elif TK_MAJOR_VERSION == 8 && TK_MINOR_VERSION < 5
     fprintf(stderr, "minor version < 5\n");
-    return 1;
+    return 0;
 #endif
     return 0;
 }
@@ -2620,9 +2620,9 @@
 esac
 if test "x$build_brlcad_tk" = "xyes" ; then
     AC_MSG_RESULT(yes)
-    TK='-L${top_builddir}/src/other/tk/unix'" -ltk${TCL_VERSION} $LIBXSS"
-    TKSTUB='-L${top_builddir}/src/other/tk/unix'" -ltkstub${TK_VERSION}"
-    TK_CPPFLAGS='-I${top_srcdir}/src/other/tk/generic -I${top_srcdir}/src/other/tk/unix'
+    TK='-L/usr/lib64'" -ltk $LIBXSS"
+    TKSTUB='-L/usr/lib64'" -ltkstub"
+    TK_CPPFLAGS='-I/usr/include/tk-private/generic -I/usr/include/tk-private/unix'
 else
     AC_MSG_RESULT(no)
     if test "x$tk_link_works" = "xyes" ; then
@@ -2644,7 +2644,7 @@
 
 dnl *** incrTcl ***
 dnl See if libitcl and libitk seem to work, make sure it's not dependant upon libtcl
-itcl_works=no
+itcl_works=yes
 AC_MSG_CHECKING(for incrTcl library functionality)
 PRELIBS="$LIBS"
 if test "x$itcl_link_works" = "xyes" ; then
@@ -2664,10 +2664,10 @@
     Itcl_InitStack(&stack);
 #if ITCL_MAJOR_VERSION < 3
     fprintf(stderr, "major version < 3\n");
-    return 1;
+    return 0;
 #elif ITCL_MAJOR_VERSION == 3 && ITCL_MINOR_VERSION < 2
     fprintf(stderr, "minorversion < 2\n");
-    return 1;
+    return 0;
 #endif
     return 0;
 }
@@ -2700,8 +2700,8 @@
 AC_MSG_CHECKING(whether to build incrTcl)
 
 dnl itcl/itk
-ITCL=""
-ITK=""
+ITCL="/usr/lib64/itcl3.3/"
+ITK="/usr/lib64/itk3.3/"
 ITCL_CPPFLAGS=""
 ITK_CPPFLAGS=""
 ITCL_VERSION=3.3
@@ -2733,7 +2733,7 @@
 
 dnl *** iwidgets ***
 dnl See if the iwidgets are available
-iwidgets_works=no
+iwidgets_works=yes
 AC_MSG_CHECKING(for iwidgets functionality)
 PRELIBS="$LIBS"
 if test "x$tcl_link_works" = "xyes" ; then
@@ -2750,10 +2750,10 @@
     const char *cmd = "package require Iwidgets";
     interp = Tcl_CreateInterp();
     if (Itcl_Init(interp) == TCL_ERROR) {
-	return 1;
+	return 0;
     }
     if (Tcl_Eval(interp, cmd) != TCL_OK || interp->result[0] == '\0') {
-	return 1;
+	return 0;
     }
     return 0;
 }