Support for fish_tests

This adds a basic Tests.cmake that can build and run fish_tests.
It also adds a 'test' target.

CMakeFiles/Tests.cmake

@@ -0,0 +1,31 @@
+# Define fish_tests.
+ADD_EXECUTABLE(fish_tests src/fish_tests.cpp ${FISH_SRCS})
+FISH_LINK_DEPS(fish_tests)
+
+# Define the directory where the test tree will go.
+SET(TESTS_INSTALL_DIR ${CMAKE_CURRENT_BINARY_DIR}/test/root/)
+
+# Add a rule to symlink the tests directory.
+ADD_CUSTOM_COMMAND(OUTPUT tests
+                   COMMAND ln -s ${CMAKE_CURRENT_SOURCE_DIR}/tests
+                           ${CMAKE_CURRENT_BINARY_DIR}/tests
+                   COMMENT "Linking tests directory..."
+                   VERBATIM)
+ADD_CUSTOM_TARGET(tests_dir DEPENDS tests)
+ADD_DEPENDENCIES(fish_tests tests_dir)
+
+# Create the 'test' target.
+# Set a policy so CMake stops complaining about the name 'test'.
+CMAKE_POLICY(PUSH)
+IF(POLICY CMP0037)
+  CMAKE_POLICY(SET CMP0037 OLD)
+ENDIF()
+ADD_CUSTOM_TARGET(test COMMAND fish_tests)
+CMAKE_POLICY(POP)
+
+# Make the directory in which to run tests.
+ADD_CUSTOM_TARGET(tests_root_target
+                  COMMAND ${CMAKE_COMMAND} -E make_directory ${TESTS_INSTALL_DIR}
+                  COMMAND DESTDIR=${CMAKE_BINARY_DIR}/tests_root ${CMAKE_COMMAND}
+                          --build ${CMAKE_BINARY_DIR} --target install)
+ADD_DEPENDENCIES(test tests_root_target)

CMakeLists.txt

@@ -67,8 +67,7 @@ ENDFUNCTION(FISH_LINK_DEPS)
 
 # Define fish.
 ADD_EXECUTABLE(fish src/fish.cpp ${FISH_SRCS})
-TARGET_LINK_LIBRARIES(fish ${CURSES_LIBRARIES})
+FISH_LINK_DEPS(fish)
 
-# Link PCRE and muparser.
-SET(PCRE2_WIDTH ${WCHAR_T_BITS})
-TARGET_LINK_LIBRARIES(fish pcre2-${PCRE2_WIDTH} muparser)
+# Set up tests.
+INCLUDE(CMakeFiles/Tests.cmake)