Simplify gl_LIBUNISTRING_VERSION_CMP expansion.

[pspp] / m4 / libunistring-base.m4

diff --git a/m4/libunistring-base.m4 b/m4/libunistring-base.m4
index 54aa521c7a792a436c98eac8b974ab1e2532dfd3..09165c5fc9e5554b1b233b3cfedcdc2cb7ee971a 100644 (file)
--- a/m4/libunistring-base.m4
+++ b/m4/libunistring-base.m4
@@ -1,4 +1,4 @@
-# libunistring-base.m4 serial 2
+# libunistring-base.m4 serial 4
 dnl Copyright (C) 2010 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -23,8 +23,7 @@ AC_DEFUN([gl_LIBUNISTRING_LIBSOURCE],
   AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE])
   dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from
   dnl gl_LIBUNISTRING_CORE if that macro has been run.
-  if gl_LIBUNISTRING_VERSION_CMP([$1])
-  then
+  if gl_LIBUNISTRING_VERSION_CMP([$1]); then
     m4_foreach_w([gl_source_file], [$2],
       [AC_LIBOBJ(m4_bpatsubst(m4_defn([gl_source_file]), [\.c$], []))
       ])
@@ -53,8 +52,7 @@ AC_DEFUN([gl_LIBUNISTRING_LIBHEADER],
   AC_REQUIRE([gl_LIBUNISTRING_LIB_PREPARE])
   dnl Use the variables HAVE_LIBUNISTRING, LIBUNISTRING_VERSION from
   dnl gl_LIBUNISTRING_CORE if that macro has been run.
-  if gl_LIBUNISTRING_VERSION_CMP([$1])
-  then
+  if gl_LIBUNISTRING_VERSION_CMP([$1]); then
     LIBUNISTRING_[]AS_TR_CPP([$2])='$2'
   else
     LIBUNISTRING_[]AS_TR_CPP([$2])=
@@ -66,6 +64,9 @@ dnl Miscellaneous preparations/initializations.
 
 AC_DEFUN([gl_LIBUNISTRING_LIB_PREPARE],
 [
+  dnl Ensure that HAVE_LIBUNISTRING is fully determined at this point.
+  m4_ifdef([gl_LIBUNISTRING], [AC_REQUIRE([gl_LIBUNISTRING])])
+
   AC_REQUIRE([AC_PROG_AWK])
 
 dnl Sed expressions to extract the parts of a version number.
@@ -135,8 +136,7 @@ AC_DEFUN([gl_LIBUNISTRING_VERSION_CMP],
                }
            ])
        }
-  }
-])
+  }])
 
 dnl gl_LIBUNISTRING_ARG_OR_ZERO([ARG], [ORIG]) expands to ARG if it is not the
 dnl same as ORIG, otherwise to 0.