I have thought some more on config_version_require and ended up with the
conclusion that I need to use double parentheses since it takes a
variable number of arguments and ... is unsupported prior to C99.
Thus the attached patch is what I will go with.
/MF
Index: clean/configure.in
===================================================================
--- clean.orig/configure.in 2008-06-11 23:33:31.000000000 +0200
+++ clean/configure.in 2008-06-11 23:33:31.000000000 +0200
@@ -752,6 +752,11 @@
AC_ARG_ENABLE(old-features,
[ --enable-old-features Compile in old MIB modules and other deprecated features
which were replaced in the default build of this major release.])
+
+AC_ARG_WITH(features-of,
+[ --with-features-of=version Compile in MIB modules and other features
+ as if this was release [version].],,
+[with_features_of=$PACKAGE_VERSION])
#
AC_ARG_WITH(enterprise-oid,
@@ -2185,6 +2190,48 @@
AC_MSG_MODULE_DBG(" $i required old features: $new_list")
#---------------------
+ # macro: config_version_require((base, version, version-modules, ...))
+ # - lists alternative modules used from different versions.
+ #
+ [new_list_alt3=`$MODULECPP module_tmp_header.h | \
+ $GREP config_version_require | \
+ $SED -e 's/ */ /g' \
+ -e 's/.*config_version_require(( *\([^)]*\) *)).*/\1/' \
+ -e 's/ *, */,/g' | \
+ awk '
+ BEGIN {
+ if("'"$enable_new_features"'" == "yes")
+ method="max";
+ else if("'"$enable_old_features"'" == "yes")
+ method="max-less";
+ else
+ method="max-less-equal";
+ FS = ".";
+ split("'"$with_features_of"'", a);
+ version=sprintf("%03u%03u%03u", a[1], a[2], a[3]);
+ }
+ {
+ FS = ",";
+ n = split($0, a);
+ FS = ".";
+ actver = "000000000";
+ actstr = a[1];
+ for(i = 2; i < n; i += 2) {
+ split(a[i], b);
+ curver=sprintf("%03u%03u%03u", b[1], b[2], b[3]);
+ if (curver > actver &&
+ (method != "max-less" || curver < version) &&
+ (method != "max-less-equal" || curver <= version)) {
+ actver = curver;
+ actstr = a[i + 1];
+ }
+ }
+ printf(" %s", actstr);
+ }'`]
+ AC_MSG_MODULE_DBG(" $i required versioned features: $new_list_alt3")
+ new_list="${new_list}${new_list_alt3}"
+
+ #---------------------
# macro: config_require(modules)
# - lists modules required for this module
#
Index: clean/acconfig.h
===================================================================
--- clean.orig/acconfig.h 2008-06-11 22:39:23.000000000 +0200
+++ clean/acconfig.h 2008-06-11 23:33:31.000000000 +0200
@@ -82,6 +82,7 @@
/* Not-to-be-compiled macros for use by configure only */
#define config_require(x)
+#define config_version_require(x)
#define config_exclude(x)
#define config_arch_require(x,y)
#define config_parse_dot_conf(w,x,y,z)
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