[PATCH 02/15] havelib: allow expansions in $5

[Paolo Bonzini]

* m4/lib-link.m4 (m4_default_quoted): New, for older autoconfs.
(AC_LIB_HAVE_LINKFLAGS): Double-quote missing message.  Use m4_default_quoted.
---
 m4/lib-link.m4 |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/m4/lib-link.m4 b/m4/lib-link.m4
index 90e1ac9..c2118e9 100644
--- a/m4/lib-link.m4
+++ b/m4/lib-link.m4
@@ -8,6 +8,9 @@ dnl From Bruno Haible.
 
 AC_PREREQ([2.54])
 
+m4_define([m4_default_quoted],
+[m4_if([$1], [], [[$2]], [[$1]])])
+
 dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
 dnl the libraries corresponding to explicit and implicit dependencies.
 dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
@@ -77,7 +80,7 @@ AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
     LIBS="$LIBS $LIB[]NAME"
     AC_TRY_LINK([$3], [$4],
       [ac_cv_lib[]Name=yes],
-      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
+      [ac_cv_lib[]Name="m4_default_quoted([$5], [no])"])
     LIBS="$ac_save_LIBS"
   ])
   if test "$ac_cv_lib[]Name" = yes; then
-- 
1.6.6.1