* configure.in: Don't use in-tree texinfo, because libiberty must

be built before it.  Check for makeinfo version 4 or higher.
* functions.texi: Regenerate.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45846 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 13 insertions, 12 deletions

diff --git a/libiberty/configure.in b/libiberty/configure.in
index 0f1427a4e93..3417827b42c 100644
--- a/libiberty/configure.in
+++ b/libiberty/configure.in
@@ -49,18 +49,19 @@ fi
 AC_SUBST(MAINT)dnl
 AC_SUBST(NOTMAINT)dnl
 
-# Do we have a single-tree copy of texinfo?
-if test -f $srcdir/../texinfo/Makefile.in; then
-  MAKEINFO='$(objdir)/../texinfo/makeinfo/makeinfo'
-  AC_MSG_RESULT([Using makeinfo from the unified source tree.])
-else
-  AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
-fi
-if test x"$MAKEINFO" = x""; then
-  BUILD_INFO=
-else
-  BUILD_INFO=info
-fi
+# Do we have a single-tree copy of texinfo?  Even if we do, we can't
+# rely on it - libiberty is built before texinfo.
+AC_CHECK_PROG(MAKEINFO, makeinfo, makeinfo, )
+BUILD_INFO=info
+case x"`$MAKEINFO --version | grep 'GNU texinfo'`" in
+  x*\ [[1-3]].* )
+    MAKEINFO="@echo $MAKEINFO is too old, 4.0 or newer required ;true"
+    BUILD_INFO=
+    AC_MSG_WARN([
+*** Makeinfo is too old. Info documentation will not be built.])
+    ;;
+esac
+AC_SUBST(MAKEINFO)
 AC_SUBST(BUILD_INFO)
 
 AC_CHECK_PROG(PERL, perl, perl, )