Make it work with a brain-dead /bin/sh and a brain-dead /bin/test.

1998-08-26  Martin Baulig  <martin@home-of-linux.org>

	* gnome-libgtop-check.m4 (GNOME_INIT_LIBGTOP): Make it work
	with a brain-dead /bin/sh and a brain-dead /bin/test.

svn path=/trunk/; revision=342

1 files changed, 53 insertions, 3 deletions

diff --git a/macros/gnome-libgtop-check.m4 b/macros/gnome-libgtop-check.m4
index a8fbfb6d74..6510f0f3f9 100644
--- a/macros/gnome-libgtop-check.m4
+++ b/macros/gnome-libgtop-check.m4
@@ -61,15 +61,65 @@ AC_DEFUN([GNOME_LIBGTOP_HOOK],
 	fi
 
 	AC_PATH_PROG(LIBGTOP_CONFIG, libgtop-config, no)
-	min_libgtop_version=ifelse([$1], ,0.25.0,$1)
+	dnl IMPORTANT NOTICE:
+	dnl   If you increase this number here, this means that *ALL*
+	dnl   modules will require the new version, even if they explicitly
+	dnl   give a lower number in their `configure.in' !!!
+	real_min_libgtop_version=0.25.0
+	min_libgtop_version=ifelse([$1], ,$real_min_libgtop_version,$1)
+	dnl I know, the following code looks really ugly, but if you want
+	dnl to make changes, please test it with a brain-dead /bin/sh and
+	dnl with a brain-dead /bin/test (not all shells/tests support the
+	dnl `<' operator to compare strings, that's why I convert everything
+	dnl into numbers and test them).
+	min_libgtop_major=`echo $min_libgtop_version | \
+	  sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+	min_libgtop_minor=`echo $min_libgtop_version | \
+	  sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+	min_libgtop_micro=`echo $min_libgtop_version | \
+	  sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+	test x$min_libgtop_micro = x && min_libgtop_micro=0
+	real_min_libgtop_major=`echo $real_min_libgtop_version | \
+	  sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+	real_min_libgtop_minor=`echo $real_min_libgtop_version | \
+	  sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+	real_min_libgtop_micro=`echo $real_min_libgtop_version | \
+	  sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+	test x$real_min_libgtop_micro = x && real_min_libgtop_micro=0
+	dnl You cannot require a version less then $real_min_libgtop_version,
+	dnl so you don't need to update each `configure.in' when it's increased.
+	if test $real_min_libgtop_major -gt $min_libgtop_major ; then
+	  min_libgtop_major=$real_min_libgtop_major
+	  min_libgtop_minor=$real_min_libgtop_minor
+	  min_libgtop_micro=$real_min_libgtop_micro
+	elif test $real_min_libgtop_major = $min_libgtop_major ; then
+	  if test $real_min_libgtop_minor -gt $min_libgtop_minor ; then
+	    min_libgtop_minor=$real_min_libgtop_minor
+	    min_libgtop_micro=$real_min_libgtop_micro
+	  elif test $real_min_libgtop_minor = $min_libgtop_minor ; then
+	    if test $real_min_libgtop_micro -gt $min_libgtop_micro ; then
+	      min_libgtop_micro=$real_min_libgtop_micro
+	    fi
+	  fi
+	fi
+	min_libgtop_version="$min_libgtop_major.$min_libgtop_minor.$min_libgtop_micro"
 	AC_MSG_CHECKING(for libgtop - version >= $min_libgtop_version)
 	no_libgtop=""
 	if test "$LIBGTOP_CONFIG" = "no" ; then
 	  no_libgtop=yes
 	else
 	  configfile=`$LIBGTOP_CONFIG --config`
-	  libgtop_version=`$LIBGTOP_CONFIG --version | sed -e 's,pre.*,,'`
-	  test $libgtop_version \< $min_libgtop_version && no_libgtop=yes
+	  libgtop_major_version=`$LIBGTOP_CONFIG --version | \
+	    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+	  libgtop_minor_version=`$LIBGTOP_CONFIG --version | \
+	    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+	  libgtop_micro_version=`$LIBGTOP_CONFIG --version | \
+	    sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+	  test $libgtop_major_version != $min_libgtop_major && no_libgtop=yes
+	  test $libgtop_minor_version -lt $min_libgtop_minor && no_libgtop=yes
+	  if test $libgtop_minor_version = $min_libgtop_minor ; then
+	    test $libgtop_micro_version -lt $min_libgtop_micro && no_libgtop=yes
+	  fi
 	  . $configfile
 	fi
 	if test x$no_libgtop = x ; then