sane_backends: fix build

media-gfx/sane_backends/sane_backends-1.0.27.recipe

@@ -1,9 +1,8 @@
 SUMMARY="Scanner Access Now Easy (SANE)"
-DESCRIPTION="
-SANE stands for \"Scanner Access Now Easy\" and is an application programming \
-interface (API) that provides standardized access to any raster image scanner \
-hardware (flatbed scanner, hand-held scanner, video- and still-cameras, frame-\
-grabbers, etc.).
+DESCRIPTION="SANE stands for \"Scanner Access Now Easy\" and is an \
+application programming interface (API) that provides standardized access to \
+any raster image scanner hardware (flatbed scanner, hand-held scanner, video- \
+and still-cameras, frame-grabbers, etc.).
 
 The SANE standard is free and its discussion and development \
 are open to everybody. The current source code is written to support several \
@@ -13,12 +12,11 @@ backends are welcome, too, however).
 
 This package includes scanners backends, the command line frontend scanimage, \
 the saned server and the sane-find-scanner utility, along with their \
-documentation.
-"
+documentation."
 HOMEPAGE="http://www.sane-project.org"
 COPYRIGHT="David Mosberger-Tang, Andy Beck"
 LICENSE="GNU LGPL v2"
-REVISION="3"
+REVISION="4"
 SOURCE_URI="https://alioth.debian.org/frs/download.php/file/4224/sane-backends-$portVersion.tar.gz"
 CHECKSUM_SHA256="293747bf37275c424ebb2c833f8588601a60b2f9653945d5a3194875355e36c9"
 SOURCE_DIR="sane-backends-$portVersion"
@@ -82,7 +80,7 @@ BUILD()
 	libtoolize --force --copy --install
 	aclocal
 	autoconf
-	automake
+	automake --add-missing
 
 	runConfigure configure \
 		--prefix=$prefix \