Commit 611735e7 authored by Roger Leigh's avatar Roger Leigh Committed by Roger Leigh

FindGTest: Add imported targets and update documentation

parent fc6c5074
......@@ -4,88 +4,89 @@
#
# Locate the Google C++ Testing Framework.
#
# Defines the following variables:
# Imported targets
# ^^^^^^^^^^^^^^^^
#
# ::
#
# GTEST_FOUND - Found the Google Testing framework
# GTEST_INCLUDE_DIRS - Include directories
# This module defines the following :prop_tgt:`IMPORTED` targets:
#
# ``GTest::GTest``
# The Google Test ``gtest`` library, if found; adds Thread::Thread
# automatically
# ``GTest::Main``
# The Google Test ``gtest_main`` library, if found
#
#
# Also defines the library variables below as normal variables. These
# contain debug/optimized keywords when a debugging library is found.
#
# ::
# Result variables
# ^^^^^^^^^^^^^^^^
#
# GTEST_BOTH_LIBRARIES - Both libgtest & libgtest-main
# GTEST_LIBRARIES - libgtest
# GTEST_MAIN_LIBRARIES - libgtest-main
# This module will set the following variables in your project:
#
# ``GTEST_FOUND``
# Found the Google Testing framework
# ``GTEST_INCLUDE_DIRS``
# the directory containing the Google Test headers
#
# The library variables below are set as normal variables. These
# contain debug/optimized keywords when a debugging library is found.
#
# Accepts the following variables as input:
#
# ::
#
# GTEST_ROOT - (as a CMake or environment variable)
# The root directory of the gtest install prefix
#
#
# ``GTEST_LIBRARIES``
# The Google Test ``gtest`` library; note it also requires linking
# with an appropriate thread library
# ``GTEST_MAIN_LIBRARIES``
# The Google Test ``gtest_main`` library
# ``GTEST_BOTH_LIBRARIES``
# Both ``gtest`` and ``gtest_main``
#
# ::
# Cache variables
# ^^^^^^^^^^^^^^^
#
# GTEST_MSVC_SEARCH - If compiling with MSVC, this variable can be set to
# "MD" or "MT" to enable searching a GTest build tree
# (defaults: "MD")
# The following cache variables may also be set:
#
# ``GTEST_ROOT``
# The root directory of the Google Test installation (may also be
# set as an environment variable)
# ``GTEST_MSVC_SEARCH``
# If compiling with MSVC, this variable can be set to ``MD`` or
# ``MT`` (the default) to enable searching a GTest build tree
#
#
# Example Usage:
# Example usage
# ^^^^^^^^^^^^^
#
# ::
#
# enable_testing()
# find_package(GTest REQUIRED)
# include_directories(${GTEST_INCLUDE_DIRS})
#
#
#
# ::
#
# add_executable(foo foo.cc)
# target_link_libraries(foo ${GTEST_BOTH_LIBRARIES})
#
#
#
# ::
# target_link_libraries(foo GTest::GTest GTest::Main)
#
# add_test(AllTestsInFoo foo)
#
#
#
#
# Deeper integration with CTest
# ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
#
# If you would like each Google test to show up in CTest as a test you
# may use the following macro. NOTE: It will slow down your tests by
# running an executable for each test and test fixture. You will also
# have to rerun CMake after adding or removing tests or test fixtures.
#
# GTEST_ADD_TESTS(executable extra_args ARGN)
#
# ::
# may use the following macro::
#
# executable = The path to the test executable
# extra_args = Pass a list of extra arguments to be passed to
# executable enclosed in quotes (or "" for none)
# ARGN = A list of source files to search for tests & test
# fixtures. Or AUTO to find them from executable target.
# GTEST_ADD_TESTS(executable extra_args files...)
#
# ``executable``
# the path to the test executable
# ``extra_args``
# a list of extra arguments to be passed to executable enclosed in
# quotes (or ``""`` for none)
# ``files...``
# a list of source files to search for tests and test fixtures. Or
# ``AUTO`` to find them from executable target
#
# However, note that this macro will slow down your tests by running
# an executable for each test and test fixture. You will also have to
# re-run CMake after adding or removing tests or test fixtures.
#
# ::
# Example usage::
#
# Example:
# set(FooTestArgs --foo 1 --bar 2)
# add_executable(FooTest FooUnitTest.cc)
# GTEST_ADD_TESTS(FooTest "${FooTestArgs}" AUTO)
......@@ -208,5 +209,60 @@ if(GTEST_FOUND)
_gtest_append_debugs(GTEST_LIBRARIES GTEST_LIBRARY)
_gtest_append_debugs(GTEST_MAIN_LIBRARIES GTEST_MAIN_LIBRARY)
set(GTEST_BOTH_LIBRARIES ${GTEST_LIBRARIES} ${GTEST_MAIN_LIBRARIES})
endif()
include(CMakeFindDependencyMacro)
find_dependency(Threads)
if(NOT TARGET GTest::GTest)
add_library(GTest::GTest UNKNOWN IMPORTED)
set_target_properties(GTest::GTest PROPERTIES
INTERFACE_LINK_LIBRARIES "Threads::Threads")
if(GTEST_INCLUDE_DIRS)
set_target_properties(GTest::GTest PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${GTEST_INCLUDE_DIRS}")
endif()
if(EXISTS "${GTEST_LIBRARY}")
set_target_properties(GTest::GTest PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
IMPORTED_LOCATION "${GTEST_LIBRARY}")
endif()
if(EXISTS "${GTEST_LIBRARY_DEBUG}")
set_property(TARGET GTest::GTest APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GTest::GTest PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "CXX"
IMPORTED_LOCATION_DEBUG "${GTEST_LIBRARY_DEBUG}")
endif()
if(EXISTS "${GTEST_LIBRARY_RELEASE}")
set_property(TARGET GTest::GTest APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(GTest::GTest PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"
IMPORTED_LOCATION_RELEASE "${GTEST_LIBRARY_RELEASE}")
endif()
endif()
if(NOT TARGET GTest::Main)
add_library(GTest::Main UNKNOWN IMPORTED)
set_target_properties(GTest::Main PROPERTIES
INTERFACE_LINK_LIBRARIES "GTest::GTest")
if(EXISTS "${GTEST_MAIN_LIBRARY}")
set_target_properties(GTest::Main PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
IMPORTED_LOCATION "${GTEST_MAIN_LIBRARY}")
endif()
if(EXISTS "${GTEST_MAIN_LIBRARY_DEBUG}")
set_property(TARGET GTest::Main APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GTest::Main PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "CXX"
IMPORTED_LOCATION_DEBUG "${GTEST_MAIN_LIBRARY_DEBUG}")
endif()
if(EXISTS "${GTEST_MAIN_LIBRARY_RELEASE}")
set_property(TARGET GTest::Main APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(GTest::Main PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"
IMPORTED_LOCATION_RELEASE "${GTEST_MAIN_LIBRARY_RELEASE}")
endif()
endif()
endif()
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