Some bugfixes, also added public function for closer integration btwn GoogleTest & CTest, contributed by Dan Blezek.

Other minor changes:
* Enhanced documentation & added examples
* _INCLUDE_DIRS and _LIBRARIES was being set regardless of _FOUND
* Fixed status message to include library rather than include dir
* Improved detection of MSVC compiled libraries
* Added a variable (GTEST_BOTH_LIBRARIES) for libgtest + libgtest_main

Modules/FindGTest.cmake

@@ -4,17 +4,57 @@
 #
 #   GTEST_FOUND - Found the Google Testing framework
 #   GTEST_INCLUDE_DIRS - Include directories
-#   GTEST_LIBRARIES - The GTest library
-#   GTEST_MAIN_LIBRARIES - The GTest library for automatic main()
 #
-# Accepts the following CMake/Environment variables as input:
+# Also defines the library variables below as normal
+# variables.  These contain debug/optimized keywords when
+# a debugging library is found.
 #
-#   GTEST_ROOT - The root directory of the gtest install prefix
+#   GTEST_BOTH_LIBRARIES - Both libgtest & libgtest-main
+#   GTEST_LIBRARIES - libgtest
+#   GTEST_MAIN_LIBRARIES - libgtest-main
 #
+# Accepts the following variables as input:
+#
+#   GTEST_ROOT - (as CMake or env. variable)
+#                The root directory of the gtest install prefix
+#
+#   GTEST_MSVC_SEARCH - If on MSVC, enables searching the build tree of
+#                       GTest if set to MD or MT (defaults: MD)
+#
+#-----------------------
+# Example Usage:
+#
+#    enable_testing(true)
+#    find_package(GTest REQUIRED)
+#    include_directories(${GTEST_INCLUDE_DIRS})
+#
+#    add_executable(foo foo.cc)
+#    target_link_libraries(foo ${GTEST_BOTH_LIBRARIES})
+#
+#    add_test(AllTestsInFoo foo)
+#
+#-----------------------
+#
+# If you would like each Google test to show up in CTest as
+# a test you may use the following macro.  NOTE: It WILL slow
+# down your tests, so be warned.
+#
+# GTEST_ADD_TESTS(executable extra_args ARGN)
+#    executable = The path to the test executable
+#    extra_args = Pass a list of extra arguments to be passed to
+#                 executable enclosed in quotes (or "" for none)
+#    ARGN =       A list of source files to search for tests & test
+#                 fixtures.
+#
+#  Example:
+#     set(FooTestArgs --foo 1 --bar 2)
+#     add_executable(FooTest FooUnitTest.cc)
+#     GTEST_ADD_TESTS(FooTest "${FooTestArgs}" FooUnitTest.cc)
 
 #=============================================================================
 # Copyright 2009 Kitware, Inc.
 # Copyright 2009 Philip Lowman <[email protected]>
+# Copyright 2009 Daniel Blezek <[email protected]>
 #
 # Distributed under the OSI-approved BSD License (the "License");
 # see accompanying file Copyright.txt for details.
@@ -25,53 +65,91 @@
 #=============================================================================
 # (To distributed this file outside of CMake, substitute the full
 #  License text for the above reference.)
+#
+# Thanks to Daniel Blezek <[email protected]> for the GTEST_ADD_TESTS code
 
-find_path(GTEST_INCLUDE_DIR gtest/gtest.h
-    HINTS
-        $ENV{GTEST_ROOT}/include
-        ${GTEST_ROOT}/include
-)
+function(GTEST_ADD_TESTS executable extra_args)
+    if(NOT ARGN)
+        message(FATAL_ERROR "Missing ARGN: Read the documentation for GTEST_ADD_TESTS")
+    endif()
+    foreach(source ${ARGN})
+        file(READ "${source}" contents)
+        string(REGEX MATCHALL "TEST_?F?\\(([A-Za-z_0-9 ,]+)\\)" found_tests ${contents})
+        foreach(hit ${found_tests})
+            string(REGEX REPLACE ".*\\(([A-Za-z_0-9]+)[, ]*([A-Za-z_0-9]+)\\).*" "\\1.\\2" test_name ${hit})
+            add_test(${test_name} ${executable} --gtest_filter=${test_name} ${extra_args})
+        endforeach()
+    endforeach()
+endfunction()
 
-function(_gtest_find_library _name _library)
-   find_library(${_name} ${_library}
-      HINTS
-         $ENV{GTEST_ROOT}
-         ${GTEST_ROOT}
-      PATH_SUFFIXES lib64 lib
-   )
+function(_gtest_append_debugs _endvar _library)
+    if(${_library} AND ${_library}_DEBUG)
+        set(_output optimized ${${_library}} debug ${${_library}_DEBUG})
+    else()
+        set(_output ${${_library}})
+    endif()
+    set(${_endvar} ${_output} PARENT_SCOPE)
 endfunction()
 
-_gtest_find_library(GTEST_LIBRARY gtest)
-_gtest_find_library(GTEST_LIBRARY_DEBUG gtestd)
-_gtest_find_library(GTEST_MAIN_LIBRARY gtest_main)
-_gtest_find_library(GTEST_MAIN_LIBRARY_DEBUG gtest_maind)
+function(_gtest_find_library _name)
+    find_library(${_name}
+        NAMES ${ARGN}
+        HINTS
+            $ENV{GTEST_ROOT}
+            ${GTEST_ROOT}
+        PATH_SUFFIXES ${_gtest_libpath_suffixes}
+    )
+    mark_as_advanced(${_name})
+endfunction()
 
-mark_as_advanced(GTEST_INCLUDE_DIR)
-mark_as_advanced(GTEST_LIBRARY)
-mark_as_advanced(GTEST_LIBRARY_DEBUG)
-mark_as_advanced(GTEST_MAIN_LIBRARY)
-mark_as_advanced(GTEST_MAIN_LIBRARY_DEBUG)
+#
 
-include(FindPackageHandleStandardArgs)
-FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTEST DEFAULT_MSG GTEST_INCLUDE_DIR GTEST_LIBRARY GTEST_MAIN_LIBRARY)
+if(NOT DEFINED GTEST_MSVC_SEARCH)
+    set(GTEST_MSVC_SEARCH MD)
+endif()
+
+set(_gtest_libpath_suffixes lib)
+if(MSVC)
+    if(GTEST_MSVC_SEARCH STREQUAL "MD")
+        list(APPEND _gtest_libpath_suffixes
+            msvc/gtest-md/Debug
+            msvc/gtest-md/Release)
+    elseif(GTEST_MSVC_SEARCH STREQUAL "MT")
+        list(APPEND _gtest_libpath_suffixes
+            msvc/gtest/Debug
+            msvc/gtest/Release)
+    endif()
+endif()
 
-set(GTEST_INCLUDE_DIRS ${GTEST_INCLUDE_DIR})
 
-# Have *_LIBRARIES contain debug/release keywords if DEBUG library is available
+find_path(GTEST_INCLUDE_DIR gtest/gtest.h
+    HINTS
+        $ENV{GTEST_ROOT}/include
+        ${GTEST_ROOT}/include
+)
+mark_as_advanced(GTEST_INCLUDE_DIR)
 
-if(GTEST_LIBRARY AND GTEST_LIBRARY_DEBUG)
-   set(GTEST_LIBRARIES
-         optimized ${GTEST_LIBRARY}
-         debug ${GTEST_LIBRARY_DEBUG})
+if(MSVC AND GTEST_MSVC_SEARCH STREQUAL "MD")
+    # The provided /MD project files for Google Test add -md suffixes to the
+    # library names.
+    _gtest_find_library(GTEST_LIBRARY            gtest-md  gtest)
+    _gtest_find_library(GTEST_LIBRARY_DEBUG      gtest-mdd gtestd)
+    _gtest_find_library(GTEST_MAIN_LIBRARY       gtest_main-md  gtest_main)
+    _gtest_find_library(GTEST_MAIN_LIBRARY_DEBUG gtest_main-mdd gtest_maind)
 else()
-   set(GTEST_LIBRARIES ${GTEST_LIBRARY})
+    _gtest_find_library(GTEST_LIBRARY            gtest)
+    _gtest_find_library(GTEST_LIBRARY_DEBUG      gtestd)
+    _gtest_find_library(GTEST_MAIN_LIBRARY       gtest_main)
+    _gtest_find_library(GTEST_MAIN_LIBRARY_DEBUG gtest_maind)
 endif()
 
-if(GTEST_MAIN_LIBRARY AND GTEST_MAIN_LIBRARY_DEBUG)
-   set(GTEST_MAIN_LIBRARIES
-         optimized ${GTEST_MAIN_LIBRARY}
-         debug ${GTEST_MAIN_LIBRARY_DEBUG})
-else()
-   set(GTEST_MAIN_LIBRARIES ${GTEST_MAIN_LIBRARY})
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(GTest DEFAULT_MSG GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY)
+
+if(GTEST_FOUND)
+    set(GTEST_INCLUDE_DIRS ${GTEST_INCLUDE_DIR})
+    _gtest_append_debugs(GTEST_LIBRARIES      GTEST_LIBRARY)
+    _gtest_append_debugs(GTEST_MAIN_LIBRARIES GTEST_MAIN_LIBRARY)
+    set(GTEST_BOTH_LIBRARIES ${GTEST_LIBRARIES} ${GTEST_MAIN_LIBRARIES})
 endif()