Port build system to non-recursive Automake.

All but toplevel Makefile.am are replaced with their non-recursive
counterparts. The generation of configure.in was removed (and thus
configure-{pre,post}.in are also removed) in favor of configure.ac
and m4 macros adding backend specific configure parts.

Version number is generated like in old build system.

There are still many things to improve, but for now there are no
immediate regressions. AUTOTOOLS-TODO contains a list of possible
improvements and fixes. AUTOTOOLS-TESTING contains what was tested
with current build system (configure flags, make options).

1 files changed, 38 insertions, 0 deletions

diff --git a/build/gen-backends-am.sh b/build/gen-backends-am.sh
new file mode 100755
index 00000000..f4fbb73a
--- /dev/null
+++ b/build/gen-backends-am.sh
@@ -0,0 +1,38 @@
+#!/bin/sh
+
+amfile='src/backends/backends.am'
+tmpfile="$amfile.$$"
+
+rm -f "$tmpfile"
+touch "$tmpfile"
+
+BACKENDS="`echo src/backends/*/configure-sub.in | sed -e 's%/configure-sub\.in%%g' | sort`"
+BACKEND_REGISTRIES="`echo src/backends/*/*Register.cpp | sort`"
+
+tf()
+{
+  echo "$1" >>"$tmpfile"
+}
+
+tf '# This is a stupid workaround for an absolute path in SYNCEVOLUTION_LIBS.'
+tf '# See AUTOTOOLS-TODO for details.'
+tf '@SYNCEVOLUTION_LIBS@: src/syncevo/libsyncevolution.la ; @true'
+tf ''
+tf "BACKENDS = $BACKENDS"
+tf ''
+tf "BACKEND_REGISTRIES = $BACKEND_REGISTRIES"
+tf ''
+tf '# backend includes'
+
+for backend in $BACKENDS
+do
+  name=`echo "$backend" | sed -e 's%src/backends/%%'`
+  tf "include \$(top_srcdir)/$backend/$name.am"
+done
+
+if test ! -f "$amfile" || ! cmp -s "$amfile" "$tmpfile"
+then
+  mv "$tmpfile" "$amfile"
+else
+  rm -f "$tmpfile"
+fi