build: be robust against install-sh files above the root dir
Explicitly set AC_CONFIG_AUX_DIR.
To reproduce the error avoided by this patch:
rm install-sh # in case it was already generated.
touch ../install-sh # yes, outside this source tree
autoreconf -fi
This will produce an error like
...
configure.ac:16: error: required file '../ltmain.sh' not found
configure.ac:5: installing '../missing'
src/Makefile.am: installing '../depcomp'
autoreconf: automake failed with exit status: 1
See also automake (vim `which automake`) and look for 'sub locate_aux_dir'.
Change-Id: I3b6d9ad4e5af44c2bdf3844c7bf8e8517bd61d8e
diff --git a/openbsc/configure.ac b/openbsc/configure.ac
index 173c6c8..4b00af7 100644
--- a/openbsc/configure.ac
+++ b/openbsc/configure.ac
@@ -3,6 +3,9 @@
m4_esyscmd([./git-version-gen .tarball-version]),
[openbsc@lists.osmocom.org])
+dnl *This* is the root dir, even if an install-sh exists in ../ or ../../
+AC_CONFIG_AUX_DIR([.])
+
AM_INIT_AUTOMAKE([dist-bzip2])
AC_CONFIG_TESTDIR(tests)