--- a/acconfig.h	Wed Jan 24 20:38:43 1996 +0000
+++ b/acconfig.h	Wed Jan 24 20:50:22 1996 +0000
@@ -26,6 +26,9 @@
 /* Define if your gnuplot has mutliplot. */
 #undef GNUPLOT_HAS_MULTIPLOT
 
+/* Define if your system has program_invocation_name. */
+#undef HAVE_PROGRAM_INVOCATION_NAME
+
 /* Define if your system has a sys_siglist variable. */
 #undef HAVE_SYS_SIGLIST
 

--- a/aclocal.m4	Wed Jan 24 20:38:43 1996 +0000
+++ b/aclocal.m4	Wed Jan 24 20:50:22 1996 +0000
@@ -402,3 +402,16 @@
 if test $octave_cv_func_putenv_malloc = yes; then
   AC_DEFINE(SMART_PUTENV)
 fi])
+dnl
+dnl This is a GNU libc invention, and this check is also from Karl
+dnl Berry's kpathsea library.
+dnl
+AC_DEFUN(OCTAVE_PROGRAM_INVOCATION_NAME,
+[AC_MSG_CHECKING(whether program_invocation_name is predefined)
+AC_CACHE_VAL(octave_cv_var_program_inv_name,
+[AC_TRY_LINK(, [main() { program_invocation_name = "love"; }],
+  octave_cv_var_program_inv_name=yes, octave_cv_var_program_inv_name=no)])dnl
+AC_MSG_RESULT($octave_cv_var_program_inv_name)
+if test $octave_cv_var_program_inv_name = yes; then
+  AC_DEFINE(HAVE_PROGRAM_INVOCATION_NAME)
+fi])

--- a/configure.in	Wed Jan 24 20:38:43 1996 +0000
+++ b/configure.in	Wed Jan 24 20:50:22 1996 +0000
@@ -20,7 +20,7 @@
 ### along with Octave; see the file COPYING.  If not, write to the Free
 ### Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
-AC_REVISION($Revision: 1.155 $)
+AC_REVISION($Revision: 1.156 $)
 AC_PREREQ(2.0)
 AC_INIT(src/octave.cc)
 AC_CONFIG_HEADER(config.h)
@@ -638,7 +638,7 @@
   AC_DEFINE(FSQP_MISSING, 1)
 fi
 
-### Checks for functions.
+### Checks for functions and variables.
 
 AC_CHECK_FUNCS(setvbuf getcwd gethostname bzero bcopy rindex vfprintf vsprintf)
 AC_CHECK_FUNCS(stricmp strnicmp strcasecmp strncasecmp strerror atexit)
@@ -647,6 +647,7 @@
 AC_CHECK_FUNCS(sigaction sigprocmask sigpending sigsuspend)
 
 OCTAVE_SMART_PUTENV
+OCTAVE_PROGRAM_INVOCATION_NAME
 
 AC_CHECK_LIB(dl, dlopen)
 AC_CHECK_FUNCS(dlopen dlsym dlerror dlclose)