configure.ac: use the subdir-objects option
This avoids clutter in the top-level dir, and also fixes this automake
warning:
Makefile.am:118: warning: source file 'twin_demos/twin_calc.c' is in a subdirectory,
Makefile.am:118: but option 'subdir-objects' is disabled
automake: warning: possible forward-incompatibility.
automake: At least a source file is in a subdirectory, but the 'subdir-objects'
automake: automake option hasn't been enabled. For now, the corresponding output
automake: object file(s) will be placed in the top-level directory. However,
automake: this behaviour will change in future Automake versions: they will
automake: unconditionally cause object files to be placed in the same subdirectory
automake: of the corresponding sources.
automake: You are advised to start using 'subdir-objects' option throughout your
automake: project, to avoid future incompatibilities.
Signed-off-by: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Geoff Levand <geoff@infradead.org>
diff --git a/configure.ac b/configure.ac
index 2ab7f96..78dcf83 100644
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@
AC_INIT([libtwin],[0.0.3],[Geoff Levand <geoff@infradead.org>])
AC_CONFIG_AUX_DIR(.)
-AM_INIT_AUTOMAKE()
+AM_INIT_AUTOMAKE([subdir-objects])
AM_MAINTAINER_MODE
# Library versioning info
