More robust libsane check.
diff --git a/configure.ac b/configure.ac
index 6b828a6..7606801 100644
--- a/configure.ac
+++ b/configure.ac
@@ -373,11 +373,13 @@
ac_save_LIBS="$LIBS"
CPPFLAGS="$CPPFLAGS $SANEINCL"
LIBS="$LIBS $SANELIBS"
- AC_CHECK_HEADER(sane/sane.h,[
- AC_CHECK_LIB(sane,sane_open,[AC_DEFINE(HAVE_SANE, 1, [Define if we have SANE development environment])],
- SANELIBS=""
- ])
- )
+ AC_CHECK_HEADER(sane/sane.h,
+ [AC_CHECK_LIB(sane,sane_open,
+ [AC_DEFINE(HAVE_SANE, 1, [Define if we have SANE development environment])],
+ [SANELIBS=""
+ SANEINCL=""])],
+ [SANELIBS=""
+ SANEINCL=""])
LIBS="$ac_save_LIBS"
CPPFLAGS="$ac_save_CPPFLAGS"
fi