X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=m4%2Fsigrok.m4;h=2d0d70fc0af83da629ec5f21e3dc7a9a85e6dee6;hb=64bc73f5282ec0e7da6e00a8d078191e5375dc5c;hp=30d87800577494e9476c581efa47437e2dcc5cf4;hpb=bc8ff24de6948efee1313c7884e56090d8424c8e;p=libsigrok.git

diff --git a/m4/sigrok.m4 b/m4/sigrok.m4
index 30d87800..2d0d70fc 100644
--- a/m4/sigrok.m4
+++ b/m4/sigrok.m4
@@ -1,22 +1,24 @@
-## Copyright (c) 2009  Openismus GmbH
-## Copyright (c) 2015  Daniel Elstner <daniel.kitta@gmail.com>
 ##
 ## This file is part of the sigrok project.
 ##
-## sigrok is free software: you can redistribute it and/or modify it
-## under the terms of the GNU General Public License as published by
+## Copyright (C) 2009 Openismus GmbH
+## Copyright (C) 2015 Daniel Elstner <daniel.kitta@gmail.com>
+##
+## This program is free software: you can redistribute it and/or modify
+## it under the terms of the GNU General Public License as published by
 ## the Free Software Foundation, either version 3 of the License, or
 ## (at your option) any later version.
 ##
-## sigrok is distributed in the hope that it will be useful,
+## This program is distributed in the hope that it will be useful,
 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
-## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ## GNU General Public License for more details.
 ##
 ## You should have received a copy of the GNU General Public License
-## along with sigrok. If not, see <http://www.gnu.org/licenses/>.
+## along with this program.  If not, see <http://www.gnu.org/licenses/>.
+##
 
-#serial 20150824
+#serial 20150825
 
 ## SR_APPEND(var-name, [list-sep,] element)
 ##
@@ -288,7 +290,8 @@ do
 	test "x$sr_ccf_result" = xno || break
 done
 CPPFLAGS=$sr_ccf_save_CPPFLAGS
-SR_APPEND([$1], [$sr_ccf_result])
+AS_IF([test "x$sr_ccf_result" != xno],
+	[SR_APPEND([$1], [$sr_ccf_result])])
 AC_MSG_RESULT([$sr_ccf_result])
 AC_SUBST([$1])
 ])