6 files changed, 92 insertions, 0 deletions
diff --git a/Tests/ExternalOBJ/CMakeLists.txt b/Tests/ExternalOBJ/CMakeLists.txt
new file mode 100644
index 0000000..4ff75b8
--- /dev/null
+++ b/Tests/ExternalOBJ/CMakeLists.txt
@@ -0,0 +1,63 @@
+cmake_minimum_required (VERSION 2.6)
+project (ExternalOBJ)
+
+if(APPLE)
+  # set _CMAKE_OSX_MACHINE to umame -m
+  exec_program(uname ARGS -m OUTPUT_VARIABLE _CMAKE_OSX_MACHINE)
+  # check for Power PC and change to ppc
+  if("${_CMAKE_OSX_MACHINE}" MATCHES "Power")
+    set(_CMAKE_OSX_MACHINE ppc)
+  endif()
+  set(CMAKE_OSX_ARCHITECTURES ${_CMAKE_OSX_MACHINE})
+endif()
+
+# Build the external object file.
+try_compile(EXTERNAL_OBJECT_BUILT
+  ${ExternalOBJ_BINARY_DIR}/Object
+  ${ExternalOBJ_SOURCE_DIR}/Object
+  Object
+  external
+  OUTPUT_VARIABLE OUTPUT
+  )
+if(EXTERNAL_OBJECT_BUILT)
+  message(
+    "Building external_object.cxx succeeded with the following output:\n"
+    "[${OUTPUT}]"
+    )
+else()
+  message(FATAL_ERROR
+    "Building external_object.cxx failed with the following output:\n"
+    "[${OUTPUT}]"
+    )
+endif()
+
+# Find the external object file.
+set(DIR ${ExternalOBJ_BINARY_DIR}/Object)
+file(GLOB_RECURSE EXTERNAL_OBJECT
+  "${DIR}/external_object*${CMAKE_CXX_OUTPUT_EXTENSION}")
+if(EXTERNAL_OBJECT)
+  list (GET EXTERNAL_OBJECT 0 EXTERNAL_OBJECT)
+  message("Found \"${EXTERNAL_OBJECT}\".")
+else()
+  message(FATAL_ERROR "Could not find external object.")
+endif()
+
+# Test creation of external objects by custom commands.
+set(CUSTOM_OBJECT
+  ${CMAKE_CURRENT_BINARY_DIR}/custom_object${CMAKE_C_OUTPUT_EXTENSION})
+add_custom_command(
+  OUTPUT ${CUSTOM_OBJECT}
+  COMMAND ${CMAKE_COMMAND} -E copy ${EXTERNAL_OBJECT} ${CUSTOM_OBJECT}
+  DEPENDS ${EXTERNAL_OBJECT}
+  )
+
+message("${EXTERNAL_OBJECT}")
+# Build an executable using the external object file.
+add_executable(ExternalOBJ executable.cxx ${CUSTOM_OBJECT})
+# A bug showed up in VS2010 where an object file that was
+# part of a custom command output worked, but ones that were
+# not didn't work.  So, repeat the executable using the object
+# directly and not from the output of the copy.
+add_executable(ExternalOBJ2 executable.cxx ${EXTERNAL_OBJECT})
+
+add_subdirectory(Sub)
diff --git a/Tests/ExternalOBJ/Object/CMakeLists.txt b/Tests/ExternalOBJ/Object/CMakeLists.txt
new file mode 100644
index 0000000..dbfe09e
--- /dev/null
+++ b/Tests/ExternalOBJ/Object/CMakeLists.txt
@@ -0,0 +1,13 @@
+cmake_minimum_required (VERSION 2.6)
+project(Object)
+if(APPLE)
+  # set _CMAKE_OSX_MACHINE to umame -m
+  exec_program(uname ARGS -m OUTPUT_VARIABLE _CMAKE_OSX_MACHINE)
+  # check for Power PC and change to ppc
+  if("${_CMAKE_OSX_MACHINE}" MATCHES "Power")
+    set(_CMAKE_OSX_MACHINE ppc)
+  endif()
+  set(CMAKE_OSX_ARCHITECTURES ${_CMAKE_OSX_MACHINE})
+endif()
+
+add_executable(external external_object.cxx external_main.cxx)
diff --git a/Tests/ExternalOBJ/Object/external_main.cxx b/Tests/ExternalOBJ/Object/external_main.cxx
new file mode 100644
index 0000000..f8b643a
--- /dev/null
+++ b/Tests/ExternalOBJ/Object/external_main.cxx
@@ -0,0 +1,4 @@
+int main()
+{
+  return 0;
+}
diff --git a/Tests/ExternalOBJ/Object/external_object.cxx b/Tests/ExternalOBJ/Object/external_object.cxx
new file mode 100644
index 0000000..5b4adaf
--- /dev/null
+++ b/Tests/ExternalOBJ/Object/external_object.cxx
@@ -0,0 +1,4 @@
+int external_object_function()
+{
+  return 0;
+}
diff --git a/Tests/ExternalOBJ/Sub/CMakeLists.txt b/Tests/ExternalOBJ/Sub/CMakeLists.txt
new file mode 100644
index 0000000..35cd30c
--- /dev/null
+++ b/Tests/ExternalOBJ/Sub/CMakeLists.txt
@@ -0,0 +1,3 @@
+set_property(SOURCE ${CUSTOM_OBJECT} PROPERTY GENERATED 1)
+add_executable(ExternalOBJSub ../executable.cxx ${CUSTOM_OBJECT})
+add_dependencies(ExternalOBJSub ExternalOBJ) # depend on generating target
diff --git a/Tests/ExternalOBJ/executable.cxx b/Tests/ExternalOBJ/executable.cxx
new file mode 100644
index 0000000..f9ec61d
--- /dev/null
+++ b/Tests/ExternalOBJ/executable.cxx
@@ -0,0 +1,5 @@
+extern int external_object_function();
+int main()
+{
+  return external_object_function();
+}