diff --git a/ChangeLog b/ChangeLog
index 2ec66245..6f2caccc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,13 @@
+2000-01-24  Martin Baulig  <martin@home-of-linux.org>
+
+	* libgtop-sysdeps.m4 (GNOME_LIBGTOP_TYPES_PRIVATE): New macro.
+	This is the same than `GNOME_LIBGTOP_TYPES' but also checks for
+	`u_int8_t' and `int8_t' and it doesn't force people to put this
+	in their acconfig.h.
+
+	* configure.in: Use GNOME_LIBGTOP_TYPES_PRIVATE instead of
+	GNOME_LIBGTOP_TYPES.
+
 2000-01-23  Martin Baulig  <martin@home-of-linux.org>
 
 	* lib/sysdeps-init-kernel.c: Load the "glibtop-backend-kernel" before
diff --git a/configure.in b/configure.in
index ee0baabd..ad1b3ea3 100644
--- a/configure.in
+++ b/configure.in
@@ -115,7 +115,7 @@ fi
 AM_CONDITIONAL(CROSS_COMPILING, test "x$cross_compiling" = xyes)
 
 GNOME_LIBGTOP_SYSDEPS
-GNOME_LIBGTOP_TYPES
+GNOME_LIBGTOP_TYPES_PRIVATE
 
 sysdeps_dir="$libgtop_sysdeps_dir"
 sysdeps_name="$libgtop_sysdeps_name"
@@ -123,7 +123,7 @@ AC_SUBST(sysdeps_dir)
 AC_SUBST(sysdeps_name)
 
 AC_MSG_CHECKING(for sysdeps_init_file)
-if x$linux_sysctl = xyes ; then
+if test x$linux_sysctl = xyes ; then
   sysdeps_init_file='sysdeps-init-kernel.c'
 else
   sysdeps_init_file='sysdeps-init-'"$libgtop_sysdeps_name"'.c'
@@ -442,6 +442,26 @@ typedef signed long long int int64_t;
 _______EOF
 	fi
 
+	if test x$glibtop_uint8_t != xyes ; then
+	  did_typedefs=yes
+	  cat >> $outfile <<\_______EOF
+
+#ifndef u_int8_t
+typedef unsigned char u_int8_t;
+#endif
+_______EOF
+	fi
+
+	if test x$glibtop_int8_t != xyes ; then
+	  did_typedefs=yes
+	  cat >> $outfile <<\_______EOF
+
+#ifndef int8_t
+typedef signed char int8_t;
+#endif
+_______EOF
+	fi
+
 	if test x$did_typedefs = xyes ; then
 	  cat >>$outfile <<_______EOF
 
@@ -505,6 +525,8 @@ esac
 ],[
 glibtop_uint64_t=$ac_cv_type_u_int64_t
 glibtop_int64_t=$ac_cv_type_int64_t
+glibtop_uint8_t=$ac_cv_type_u_int8_t
+glibtop_int8_t=$ac_cv_type_int8_t
 libgtop_major_version=$LIBGTOP_MAJOR_VERSION
 libgtop_minor_version=$LIBGTOP_MINOR_VERSION
 libgtop_micro_version=$LIBGTOP_MICRO_VERSION
diff --git a/libgtop-sysdeps.m4 b/libgtop-sysdeps.m4
index 9e54f769..37f8e39d 100644
--- a/libgtop-sysdeps.m4
+++ b/libgtop-sysdeps.m4
@@ -1,3 +1,13 @@
+dnl This is used internally for <glibtop-config.h>.
+
+AC_DEFUN([GNOME_LIBGTOP_TYPES_PRIVATE],
+[
+	AC_CHECK_TYPE(u_int64_t, unsigned long long int)
+	AC_CHECK_TYPE(int64_t, signed long long int)
+	AC_CHECK_TYPE(u_int8_t, unsigned char)
+	AC_CHECK_TYPE(int8_t, signed char)
+])
+
 dnl This file is intended for use both internally in libgtop and in every program
 dnl that wants to use it.
 dnl