Add subdir-objects to shut automake up

automake 1.14 onwards has started emitting lots of warnings about this
option:

automake: warning: possible forward-incompatibility.
automake: At least a source file is in a subdirectory, but the
'subdir-objects'
automake: automake option hasn't been enabled.  For now, the corresponding
output
automake: object file(s) will be placed in the top-level directory.
However,
automake: this behaviour will change in future Automake versions: they will
automake: unconditionally cause object files to be placed in the same
subdirectory
automake: of the corresponding sources.
automake: You are advised to start using 'subdir-objects' option throughout
your
automake: project, to avoid future incompatibilities.

So enable this in AM_INIT_AUTOMAKE.

This doesn't seem to break older automake versions.
1 file changed
tree: fc1c7672e569bfaa4fd8b0ffed2d028403cd42fa
  1. .gitignore
  2. .mailmap
  3. CHANGES
  4. COPYING
  5. FAQ
  6. Makefile.am
  7. README
  8. SYNCING
  9. TODO
  10. arguments.c
  11. array.h
  12. attributes.c
  13. autogen.sh
  14. cfg.c
  15. client.c
  16. clock.c
  17. cmd-attach-session.c
  18. cmd-bind-key.c
  19. cmd-break-pane.c
  20. cmd-capture-pane.c
  21. cmd-choose-buffer.c
  22. cmd-choose-client.c
  23. cmd-choose-list.c
  24. cmd-choose-tree.c
  25. cmd-clear-history.c
  26. cmd-clock-mode.c
  27. cmd-command-prompt.c
  28. cmd-confirm-before.c
  29. cmd-copy-mode.c
  30. cmd-delete-buffer.c
  31. cmd-detach-client.c
  32. cmd-display-message.c
  33. cmd-display-panes.c
  34. cmd-find-window.c
  35. cmd-has-session.c
  36. cmd-if-shell.c
  37. cmd-join-pane.c
  38. cmd-kill-pane.c
  39. cmd-kill-server.c
  40. cmd-kill-session.c
  41. cmd-kill-window.c
  42. cmd-link-window.c
  43. cmd-list-buffers.c
  44. cmd-list-clients.c
  45. cmd-list-commands.c
  46. cmd-list-keys.c
  47. cmd-list-panes.c
  48. cmd-list-sessions.c
  49. cmd-list-windows.c
  50. cmd-list.c
  51. cmd-load-buffer.c
  52. cmd-lock-server.c
  53. cmd-move-window.c
  54. cmd-new-session.c
  55. cmd-new-window.c
  56. cmd-paste-buffer.c
  57. cmd-pipe-pane.c
  58. cmd-queue.c
  59. cmd-refresh-client.c
  60. cmd-rename-session.c
  61. cmd-rename-window.c
  62. cmd-resize-pane.c
  63. cmd-respawn-pane.c
  64. cmd-respawn-window.c
  65. cmd-rotate-window.c
  66. cmd-run-shell.c
  67. cmd-save-buffer.c
  68. cmd-select-layout.c
  69. cmd-select-pane.c
  70. cmd-select-window.c
  71. cmd-send-keys.c
  72. cmd-server-info.c
  73. cmd-set-buffer.c
  74. cmd-set-environment.c
  75. cmd-set-option.c
  76. cmd-show-environment.c
  77. cmd-show-messages.c
  78. cmd-show-options.c
  79. cmd-source-file.c
  80. cmd-split-window.c
  81. cmd-start-server.c
  82. cmd-string.c
  83. cmd-suspend-client.c
  84. cmd-swap-pane.c
  85. cmd-swap-window.c
  86. cmd-switch-client.c
  87. cmd-unbind-key.c
  88. cmd-unlink-window.c
  89. cmd-wait-for.c
  90. cmd.c
  91. colour.c
  92. compat.h
  93. compat/
  94. configure.ac
  95. control-notify.c
  96. control.c
  97. environ.c
  98. examples/
  99. format.c
  100. grid-cell.c
  101. grid-view.c
  102. grid.c
  103. input-keys.c
  104. input.c
  105. job.c
  106. key-bindings.c
  107. key-string.c
  108. layout-custom.c
  109. layout-set.c
  110. layout.c
  111. log.c
  112. mdoc2man.awk
  113. mode-key.c
  114. names.c
  115. notify.c
  116. options-table.c
  117. options.c
  118. osdep-aix.c
  119. osdep-darwin.c
  120. osdep-dragonfly.c
  121. osdep-freebsd.c
  122. osdep-hpux.c
  123. osdep-linux.c
  124. osdep-netbsd.c
  125. osdep-openbsd.c
  126. osdep-sunos.c
  127. osdep-unknown.c
  128. paste.c
  129. resize.c
  130. screen-redraw.c
  131. screen-write.c
  132. screen.c
  133. server-client.c
  134. server-fn.c
  135. server-window.c
  136. server.c
  137. session.c
  138. signal.c
  139. status.c
  140. tmux.1
  141. tmux.c
  142. tmux.h
  143. tools/
  144. tty-acs.c
  145. tty-keys.c
  146. tty-term.c
  147. tty.c
  148. utf8.c
  149. window-choose.c
  150. window-clock.c
  151. window-copy.c
  152. window.c
  153. www/
  154. xmalloc.c
  155. xterm-keys.c