Make Python interface available from out-of-source builddir with PYTHONPATH

Makefile.in

@@ -107,7 +107,7 @@ am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
 mkinstalldirs = $(install_sh) -d
 CONFIG_HEADER = $(top_builddir)/config/config.h
 CONFIG_CLEAN_FILES =
-CONFIG_CLEAN_VPATH_FILES =
+CONFIG_CLEAN_VPATH_FILES = src/mtime/__init__.py src/mtime/libmtime.py
 AM_V_P = $(am__v_P_@AM_V@)
 am__v_P_ = $(am__v_P_@AM_DEFAULT_V@)
 am__v_P_0 = false
@@ -168,7 +168,9 @@ am__DIST_COMMON = $(srcdir)/Makefile.in $(top_srcdir)/config/compile \
 	$(top_srcdir)/config/config.h.in \
 	$(top_srcdir)/config/config.sub \
 	$(top_srcdir)/config/install-sh $(top_srcdir)/config/ltmain.sh \
-	$(top_srcdir)/config/missing AUTHORS NEWS README \
+	$(top_srcdir)/config/missing \
+	$(top_srcdir)/src/mtime/__init__.py \
+	$(top_srcdir)/src/mtime/libmtime.py AUTHORS NEWS README \
 	config/compile config/config.guess config/config.sub \
 	config/depcomp config/install-sh config/ltmain.sh \
 	config/missing config/py-compile

configure

@@ -20276,9 +20276,15 @@ else
 fi
-ac_config_files="$ac_config_files Makefile doc/Makefile doc/Doxyfile examples/Makefile include/Makefile src/Makefile test/Makefile"
+ac_config_files="$ac_config_files Makefile doc/Doxyfile doc/Makefile examples/Makefile include/Makefile src/Makefile test/Makefile"
+if test "x$enable_shared" = xyes
+then :
+  ac_config_links="$ac_config_links src/mtime/__init__.py:src/mtime/__init__.py src/mtime/libmtime.py:src/mtime/libmtime.py"
+
+fi
+
 cat >confcache <<\_ACEOF
 # This file is a shell script that caches the results of configure
 # tests run on this system so they can be shared between configure
@@ -20873,6 +20879,7 @@ cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 # Files that config.status was made for.
 config_files="$ac_config_files"
 config_headers="$ac_config_headers"
+config_links="$ac_config_links"
 config_commands="$ac_config_commands"
 _ACEOF
@@ -20903,6 +20910,9 @@ $config_files
 Configuration headers:
 $config_headers
+Configuration links:
+$config_links
+
 Configuration commands:
 $config_commands
@@ -21430,12 +21440,14 @@ do
     "depfiles") CONFIG_COMMANDS="$CONFIG_COMMANDS depfiles" ;;
     "libtool") CONFIG_COMMANDS="$CONFIG_COMMANDS libtool" ;;
     "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
-    "doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
     "doc/Doxyfile") CONFIG_FILES="$CONFIG_FILES doc/Doxyfile" ;;
+    "doc/Makefile") CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
     "examples/Makefile") CONFIG_FILES="$CONFIG_FILES examples/Makefile" ;;
     "include/Makefile") CONFIG_FILES="$CONFIG_FILES include/Makefile" ;;
     "src/Makefile") CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
     "test/Makefile") CONFIG_FILES="$CONFIG_FILES test/Makefile" ;;
+    "src/mtime/__init__.py") CONFIG_LINKS="$CONFIG_LINKS src/mtime/__init__.py:src/mtime/__init__.py" ;;
+    "src/mtime/libmtime.py") CONFIG_LINKS="$CONFIG_LINKS src/mtime/libmtime.py:src/mtime/libmtime.py" ;;
   *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;
   esac
@@ -21449,6 +21461,7 @@ done
 if $ac_need_defaults; then
   test ${CONFIG_FILES+y} || CONFIG_FILES=$config_files
   test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers
+  test ${CONFIG_LINKS+y} || CONFIG_LINKS=$config_links
   test ${CONFIG_COMMANDS+y} || CONFIG_COMMANDS=$config_commands
 fi
@@ -21746,7 +21759,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 fi # test -n "$CONFIG_HEADERS"
-eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS    :C $CONFIG_COMMANDS"
+eval set X "  :F $CONFIG_FILES  :H $CONFIG_HEADERS  :L $CONFIG_LINKS  :C $CONFIG_COMMANDS"
 shift
 for ac_tag
 do
@@ -22023,7 +22036,38 @@ printf "%s\n" X"$_am_arg" |
 	  }
 	  s/.*/./; q'`/stamp-h$_am_stamp_count
  ;;
+  :L)
+  #
+  # CONFIG_LINK
+  #
+  if test "$ac_source" = "$ac_file" && test "$srcdir" = '.'; then
+    :
+  else
+    # Prefer the file from the source tree if names are identical.
+    if test "$ac_source" = "$ac_file" || test ! -r "$ac_source"; then
+      ac_source=$srcdir/$ac_source
+    fi
+
+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: linking $ac_source to $ac_file" >&5
+printf "%s\n" "$as_me: linking $ac_source to $ac_file" >&6;}
+
+    if test ! -r "$ac_source"; then
+      as_fn_error $? "$ac_source: file not found" "$LINENO" 5
+    fi
+    rm -f "$ac_file"
+
+    # Try a relative symlink, then a hard link, then a copy.
+    case $ac_source in
+    [\\/$]* | ?:[\\/]* ) ac_rel_source=$ac_source ;;
+	*) ac_rel_source=$ac_top_build_prefix$ac_source ;;
+    esac
+    ln -s "$ac_rel_source" "$ac_file" 2>/dev/null ||
+      ln "$ac_source" "$ac_file" 2>/dev/null ||
+      cp -p "$ac_source" "$ac_file" ||
+      as_fn_error $? "cannot link or copy $ac_source to $ac_file" "$LINENO" 5
+  fi
+ ;;
   :C)  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: executing $ac_file commands" >&5
 printf "%s\n" "$as_me: executing $ac_file commands" >&6;}
  ;;

configure.ac

@@ -120,13 +120,19 @@ AM_CONDITIONAL([DX_FLAG_html], [test $DX_FLAG_html -eq 1])
 AM_CONDITIONAL([DX_FLAG_ps], [test $DX_FLAG_ps -eq 1])
 
 AC_CONFIG_FILES([
-        Makefile
-        doc/Makefile
-        doc/Doxyfile
-        examples/Makefile
-        include/Makefile
-        src/Makefile
-        test/Makefile
+  Makefile
+  doc/Doxyfile
+  doc/Makefile
+  examples/Makefile
+  include/Makefile
+  src/Makefile
+  test/Makefile
 ])
 
+AS_VAR_IF([enable_shared], [yes],
+  [AC_CONFIG_LINKS([
+     src/mtime/__init__.py:src/mtime/__init__.py
+     src/mtime/libmtime.py:src/mtime/libmtime.py
+])])
+
 AC_OUTPUT