create a globale configure/make

- move the configure from nominatim out and add checks for all dependencies
- bring module under automake control
- add osm2pgsql as a submodule, configure and build with the others

configure.ac

@@ -0,0 +1,65 @@
+AC_INIT(Nominatim,1.9.9)
+
+dnl Required autoconf version
+AC_PREREQ(2.61)
+
+AM_INIT_AUTOMAKE([1.9.6 dist-bzip2 std-options check-news])
+
+dnl Additional macro definitions are in here
+AC_CONFIG_MACRO_DIR([osm2pgsql/m4])
+
+dnl Generate configuration header file
+AC_CONFIG_HEADER(nominatim/config.h)
+
+
+dnl Find C compiler
+AC_PROG_CC
+
+dnl Find C++ compiler
+AC_PROG_CXX
+
+dnl pthread
+AX_PTHREAD([], [AC_MSG_ERROR([pthread library required])])
+
+dnl check for zlib library
+AX_CHECK_ZLIB
+
+dnl Check for Geos library
+AX_LIB_GEOS
+if test "x$GEOS_VERSION" = "x" 
+then
+  AC_MSG_ERROR([required library not found]);
+fi
+
+dnl Check for Proj library
+AX_LIB_PROJ
+if test "$HAVE_PROJ" = "no" 
+then
+  AC_MSG_ERROR([required library not found]);
+fi
+
+
+dnl Check for PostgresSQL client library
+AX_LIB_POSTGRESQL(8.4)
+if test "x$POSTGRESQL_VERSION" = "x"
+then
+    AC_MSG_ERROR([postgresql client library not found])
+fi
+if test ! -f "$POSTGRESQL_PGXS"
+then
+    AC_MSG_ERROR([postgresql server development library not found])
+fi
+
+dnl Check for bzip2 library
+AX_LIB_BZIP2
+if test "$HAVE_BZIP2" = "no" 
+then
+  AC_MSG_ERROR([required library not found]);
+fi
+
+dnl Check for libxml2 library
+AM_PATH_XML2
+
+AC_CONFIG_SUBDIRS([osm2pgsql])
+
+AC_OUTPUT(Makefile nominatim/Makefile module/Makefile)