configure.ac: place build artifacts in the "build-aux" directory.

During the build, autotools generates a bunch of files that need a
place to live. By default, most of them (the "compile" and "missing"
scripts, for example) wind up in the project root. This commit sets

  AC_CONFIG_AUX_DIR([build-aux])

in configure.ac so that the aforementioned files are placed in the
build-aux directory instead. This keeps the top-level directory
nice and clean.

diff --git a/configure.ac b/configure.ac
index 83729dc544abccc1735c8b2c78721b6965d77c58..6de8a998cdcbe589016ed84ad265ab0b8ab696cf 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,7 @@
 AC_PREREQ([2.68])
 AC_INIT([apply-default-acl], [0.4.2], [michael@orlitzky.com])
+# Store build artifacts in this directory to keep the house clean.
+AC_CONFIG_AUX_DIR([build-aux])
 AM_INIT_AUTOMAKE([-Wall foreign no-dist-gzip dist-xz tar-ustar])
 AC_CONFIG_FILES([Makefile src/Makefile])
 AC_CONFIG_SRCDIR([src/apply-default-acl.c])