cmake: install compat binaries

cmake/config.cmake

@@ -12,3 +12,5 @@ if (HAVE_PTHREAD)
 else()
   set(USE_ASYNC OFF)
 endif()
+
+option(ESPEAK_COMPAT "Install compat binary symlinks" OFF)

src/CMakeLists.txt

@@ -19,10 +19,18 @@ endif()
 if (NOT WIN32)
   add_custom_target(
     speak-ng ALL
-    ${CMAKE_COMMAND} -E create_symlink espeak-ng ${CMAKE_CURRENT_BINARY_DIR}/speak-ng
-    COMMENT "Link espeak-ng to speak-ng"
+    COMMAND ${CMAKE_COMMAND} -E create_symlink espeak-ng ${CMAKE_CURRENT_BINARY_DIR}/speak-ng
+    COMMAND ${CMAKE_COMMAND} -E create_symlink espeak-ng ${CMAKE_CURRENT_BINARY_DIR}/espeak
+    COMMAND ${CMAKE_COMMAND} -E create_symlink espeak-ng ${CMAKE_CURRENT_BINARY_DIR}/speak
+    COMMENT "Link espeak-ng to compat names"
     DEPENDS espeak-ng-bin
   )
 endif()
 install(TARGETS espeak-ng-bin)
 install(DIRECTORY include/espeak include/espeak-ng TYPE INCLUDE)
+
+if (ESPEAK_COMPAT AND NOT WIN32)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/speak-ng DESTINATION bin)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/espeak DESTINATION bin)
+  install(FILES ${CMAKE_CURRENT_BINARY_DIR}/speak DESTINATION bin)
+endif()