--- slang-1.4.9/autoconf/configure.in.old	2002-09-13 13:53:56.000000000 +0200
+++ slang-1.4.9/autoconf/configure.in	2002-09-13 14:01:44.000000000 +0200
@@ -17,6 +17,62 @@
 AC_CONFIG_AUX_DIR(autoconf)
 AC_CANONICAL_HOST
 
+AH_TOP([
+/* -*- c -*- */
+/* Note: this is for unix only. */
+
+#ifndef SL_CONFIG_H
+#define SL_CONFIG_H
+])
+
+AH_BOTTOM([
+#if defined(HAVE_SIGADDSET) && defined(HAVE_SIGEMPTYSET)
+# if defined(HAVE_SIGACTION) && defined(HAVE_SIGPROCMASK)
+#  define SLANG_POSIX_SIGNALS
+# endif
+#endif
+
+/* Define if you need to in order for stat and other things to work.  */
+#undef _POSIX_SOURCE
+
+#ifdef _AIX
+# ifndef _POSIX_SOURCE
+#  define _POSIX_SOURCE 1
+# endif
+# ifndef _ALL_SOURCE
+#  define _ALL_SOURCE
+# endif
+/* This may generate warnings but the fact is that without it, xlc will 
+ * INCORRECTLY inline many str* functions. */
+# undef __STR__
+#endif
+
+/* define USE_TERMCAP if you want to use it instead of terminfo. */
+#if defined(sequent) || defined(NeXT)
+# ifndef USE_TERMCAP
+#  define USE_TERMCAP
+# endif
+#endif
+
+#if defined(ultrix) && !defined(__GNUC__)
+# ifndef NO_PROTOTYPES
+#  define NO_PROTOTYPES
+# endif
+#endif
+
+#ifndef unix
+# define unix 1
+#endif
+
+#ifndef __unix__
+# define __unix__ 1
+#endif
+
+#define _SLANG_SOURCE_	1
+#endif /* SL_CONFIG_H */
+])
+
+
 JD_INIT
 JD_ANSI_CC
 
@@ -69,9 +125,9 @@
 times gmtime \
 )
 
-AC_CHECK_LIB(m, acosh, [AC_DEFINE(HAVE_ACOSH)])
-AC_CHECK_LIB(m, asinh, [AC_DEFINE(HAVE_ASINH)])
-AC_CHECK_LIB(m, atanh, [AC_DEFINE(HAVE_ATANH)])
+AC_CHECK_LIB(m, acosh, [AC_DEFINE(HAVE_ACOSH,1,[Define to 1 if you have the `acosh' function])])
+AC_CHECK_LIB(m, asinh, [AC_DEFINE(HAVE_ASINH,1,[Define to 1 if you have the `asinh' function])])
+AC_CHECK_LIB(m, atanh, [AC_DEFINE(HAVE_ATANH,1,[Define to 1 if you have the `atanh' function])])
 
 JD_ELF_COMPILER
 JD_IEEE_CFLAGS
--- slang-1.4.9/utoconf/aclocal.m4.old	2002-09-13 13:35:17.000000000 +0200
+++ slang-1.4.9/autoconf/aclocal.m4	2002-09-13 14:16:10.000000000 +0200
@@ -258,18 +258,18 @@
 AC_DEFUN(JD_GCC_WARNINGS,
 [
 AC_ARG_ENABLE(warnings,
-	      [  --enable-warnings       turn on GCC compiler warnings],
+	      AC_HELP_STRING([--enable-warnings],[turn on GCC compiler warnings]),
 	      [gcc_warnings=$enableval])
-if test -n "$GCC"
+if test -n "$GCC" && test -n "$gcc_warnings"
 then
-  CFLAGS="$CFLAGS -fno-strength-reduce"
-  if test -n "$gcc_warnings"
-  then
-    CFLAGS="$CFLAGS -Wall -W -pedantic -Winline -Wmissing-prototypes \
- -Wnested-externs -Wpointer-arith -Wcast-align -Wshadow -Wstrict-prototypes"
-    # Now trim excess whitespace
-    CFLAGS=`echo $CFLAGS`
-  fi
+  CFLAGS="$CFLAGS -Wall -W -pedantic -Winline -Wmissing-prototypes \
+  -Wnested-externs -Wpointer-arith -Wcast-align -Wshadow -Wstrict-prototypes \
+  -Wformat -Wformat-security"
+  ELF_CFLAGS="$ELF_CFLAGS -Wall -W -pedantic -Winline -Wmissing-prototypes \
+  -Wnested-externs -Wpointer-arith -Wcast-align -Wshadow -Wstrict-prototypes \
+  -Wformat -Wformat-security"
+  # Now trim excess whitespace
+  CFLAGS=`echo $CFLAGS`
 fi
 ])
 
@@ -415,7 +415,7 @@
 done
 if test "$TERMCAP"; then
   AC_MSG_RESULT(no)
-  AC_DEFINE(USE_TERMCAP)
+  AC_DEFINE(USE_TERMCAP,1,[Define to use termcap])
 fi
 AC_SUBST(TERMCAP)dnl
 AC_SUBST(MISC_TERMINFO_DIRS)dnl
@@ -439,7 +439,7 @@
   yes
 #endif
 ], [
-AC_DEFINE(_HPUX_SOURCE)
+AC_DEFINE(_HPUX_SOURCE,1,[Special define needed for HPUX])
 if test "$CC" = cc; then CC="cc -Ae"; fi
 ])dnl
 dnl
@@ -462,8 +462,11 @@
 dnl # Check for dynamic linker
 dnl #-------------------------------------------------------------------------
 DYNAMIC_LINK_LIB=""
+
+AH_TEMPLATE([HAVE_DLOPEN],[Define if you have dlopen])
+
 AC_CHECK_HEADER(dlfcn.h,[
-  AC_DEFINE(HAVE_DLFCN_H)
+  AC_DEFINE(HAVE_DLFCN_H,1,[Define if you have the dlfcn.h header])
   AC_CHECK_LIB(dl,dlopen,[
     DYNAMIC_LINK_LIB="-ldl"
     AC_DEFINE(HAVE_DLOPEN)
@@ -484,7 +487,7 @@
   *linux* )
     DYNAMIC_LINK_FLAGS="-Wl,-export-dynamic"
     ELF_CC="gcc"
-    ELF_CFLAGS="-O2 -fno-strength-reduce -fPIC"
+    ELF_CFLAGS="$ELF_CFLAGS -fPIC"
     ELF_LINK="gcc -shared -Wl,-soname#"
     ELF_LINK_CMD="\$(ELF_LINK),\$(ELFLIB_MAJOR)"
     ELF_DEP_LIBS="\$(DL_LIB) -lm -lc"