From fe083155f1560b8796e116cbe335378e9715de58 Mon Sep 17 00:00:00 2001
From: Derek Atkins <derek@ihtfp.com>
Date: Thu, 8 May 2003 02:05:15 +0000
Subject: [PATCH] 	* macros/autogen.sh: require autoconf >= 2.53 and
 automake >= 1.5 	  Also look for appropriately-named versions on
 systems like RH7.3

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@8277 57a11ea4-9604-0410-9ed3-97b8803252fd
---
 ChangeLog         |  5 +++
 macros/autogen.sh | 92 ++++++++++++++++++++++++++++++++++++++++++++---
 2 files changed, 93 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index bd300c283e..01768ac07f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2003-05-07  Derek Atkins  <derek@ihtfp.com>
+
+	* macros/autogen.sh: require autoconf >= 2.53 and automake >= 1.5
+	  Also look for appropriately-named versions on systems like RH7.3
+
 2003-05-05  Christian Stimming  <stimming@tuhh.de>
 
 	* src/import-export/hbci/dialog-hbcitrans.c, gnc-hbci-utils.h,
diff --git a/macros/autogen.sh b/macros/autogen.sh
index 7940ccfa15..490347865c 100644
--- a/macros/autogen.sh
+++ b/macros/autogen.sh
@@ -3,10 +3,6 @@
 
 DIE=0
 
-AUTOCONF=${AUTOCONF:-autoconf}
-AUTOHEADER=${AUTOHEADER:-autoheader}
-AUTOMAKE=${AUTOMAKE:-automake}
-ACLOCAL=${ACLOCAL:-aclocal}
 GETTEXTIZE=${GETTEXTIZE:-gettextize}
 INTLTOOLIZE=${INTLTOOLIZE:-intltoolize}
 LIBTOOLIZE=${LIBTOOLIZE:-libtoolize}
@@ -18,6 +14,94 @@ if [ -n "$GNOME2_PATH" ]; then
 	export PATH
 fi
 
+# usage: test_version program version
+# returns 0 if program >= version; returns 1 if not.
+test_version()
+{
+    this_prog="$1"
+    want_vers="$2"
+
+    testv=`"$this_prog" --version | head -1 | awk '{print $NF}'`
+    if test -z "$testv" ; then return 1 ; fi
+
+    testv_major=`echo "$testv" | sed 's/\([0-9]*\).\([0-9]*\).*$/\1/'`
+    testv_minor=`echo "$testv" | sed 's/\([0-9]*\).\([0-9]*\).*$/\2/'`
+
+    vers_major=`echo "$want_vers" | sed 's/\([0-9]*\).\([0-9]*\).*$/\1/'`
+    vers_minor=`echo "$want_vers" | sed 's/\([0-9]*\).\([0-9]*\).*$/\2/'`
+
+    # if wanted_major > found_major, this isn't good enough
+    if test $vers_major -gt $testv_major ; then
+	return 1
+    # if wanted_major < found_major, then this is fine
+    elif test $vers_major -lt $testv_major ; then
+	return 0
+    # if we get here, then the majors are equal, so test the minor version
+    # we want found_minor >= want_minor.
+    # So, if want_minor > found_minor, this is bad.
+    elif test $vers_minor -gt $testv_minor ; then
+	return 1
+    # this is it.
+    else
+	return 0
+    fi
+}
+
+# usage: find_program preset program version
+# sets "program" to the name of the program to use.
+# if preset is set, then use that regardless,
+#  otherwise check if "program" is of a good enough version and use that,
+#  otherwise check if "program-version" is of a good enough version and use that.
+#  otherwise return an error.
+find_program()
+{
+    find="$1"
+    prog="$2"
+    vers="$3"
+
+    if test -n "$find" ; then
+	test_version "$find" "$vers"
+	status="$?"
+	if test "$status" = 0 ; then
+	    program="$find"
+	    return 0
+	fi
+	echo "**Error**: cannot use $find"
+    else
+
+	test_version "$prog" "$vers"
+	status=$?
+	if test "$status" = 0 ; then
+	    program="$prog"
+	    return 0
+	fi
+
+	test_version "$prog-$vers" "$vers"
+	status=$?
+	if test "$status" = 0 ; then
+	    program="$prog-$vers"
+	    return 0
+	fi
+    fi
+
+    echo
+    echo "**Error**: You must have at least version $vers of $prog installed."
+    echo "Please check your distribution or the appropriate web site."
+    echo
+    DIE=1
+    return 1
+}
+
+find_program "$AUTOCONF" autoconf 2.53
+[ "$?" = 0 ] && AUTOCONF="$program"
+find_program "$AUTOHEADER" autoheader 2.53
+[ "$?" = 0 ] && AUTOHEADER="$program"
+find_program "$AUTOMAKE" automake 1.5
+[ "$?" = 0 ] && AUTOMAKE="$program"
+find_program "$ACLOCAL" aclocal 1.5
+[ "$?" = 0 ] && ACLOCAL="$program"
+
+
 (${AUTOCONF} --version) < /dev/null > /dev/null 2>&1 || {
   echo
   echo "**Error**: You must have \`autoconf' installed to compile GnuCash."