cmake_minimum_required (VERSION 2.6)
PROJECT(FindPackageTest)

# Look for a package that has a find module and may be found.
FIND_PACKAGE(OpenGL QUIET)

# Look for a package that has no find module and will not be found.
FIND_PACKAGE(NotAPackage QUIET)

# Look for a package that has an advanced find module.
FIND_PACKAGE(VTK QUIET)

ADD_EXECUTABLE(FindPackageTest FindPackageTest.cxx)

# test behaviour of cmFindBase wrt. the CMAKE_PREFIX_PATH variable
# foo.h should be found in ${CMAKE_CURRENT_SOURCE_DIR}/include:

SET(CMAKE_PREFIX_PATH /blub /blah "${CMAKE_CURRENT_SOURCE_DIR}")
FIND_PATH(FOO_DIR foo.h)

IF(NOT FOO_DIR)
  MESSAGE(FATAL_ERROR "Did not find foo.h which is in ${CMAKE_CURRENT_SOURCE_DIR}/include
  CMAKE_PREFIX_PATH = ${CMAKE_PREFIX_PATH}")
ENDIF(NOT FOO_DIR)

LIST(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR})
FIND_PACKAGE(VersionTestA 1)
FIND_PACKAGE(VersionTestB 1.2)
FIND_PACKAGE(VersionTestC 1.2.3)
FIND_PACKAGE(VersionTestD 1.2.3.4)

#-----------------------------------------------------------------------------

#SET(CMAKE_FIND_DEBUG_MODE 1)

# For purposes of the test wipe out previous find results.
SET(PACKAGES
  foo Foo Bar TFramework Tframework TApp Tapp Special
  VersionedA VersionedB
  wibbleA wibbleB
  )
FOREACH(p ${PACKAGES})
  SET(${p}_DIR "" CACHE FILEPATH "Wipe out find results for testing." FORCE)
ENDFOREACH(p)

# Enable framework and bundle searching.  Make sure bundles are found
# before unix-syle packages.
SET(CMAKE_FIND_FRAMEWORK LAST)
SET(CMAKE_FIND_APPBUNDLE FIRST)

# Look for packages with new-style signatures.
FIND_PACKAGE(foo NO_MODULE)
FIND_PACKAGE(Foo CONFIGS FooConfig.cmake)
FIND_PACKAGE(Bar)
FIND_PACKAGE(TFramework CONFIGS TFrameworkConfig.cmake)
FIND_PACKAGE(Tframework)
FIND_PACKAGE(TApp)
FIND_PACKAGE(Tapp CONFIGS tapp-config.cmake)
FIND_PACKAGE(Special NAMES Suffix SuffixTest PATH_SUFFIXES test)
FIND_PACKAGE(VersionedA 2 NAMES zot)
FIND_PACKAGE(VersionedB 3.1 EXACT NAMES zot)

# HINTS should override the system but PATHS should not
LIST(INSERT CMAKE_SYSTEM_PREFIX_PATH 0 "${CMAKE_CURRENT_SOURCE_DIR}/A")
FIND_PACKAGE(wibbleA NAMES wibble PATHS B)
FIND_PACKAGE(wibbleB NAMES wibble HINTS B)

# Expected locations at which packages should be found.
SET(foo_EXPECTED "lib/foo-1.2/foo-config.cmake")
SET(Foo_EXPECTED "lib/foo-1.2/CMake/FooConfig.cmake")
SET(Bar_EXPECTED "lib/Bar/BarConfig.cmake")
SET(Special_EXPECTED "lib/suffix/test/SuffixTestConfig.cmake")
SET(TFramework_EXPECTED
  "TFramework.framework/Versions/A/Resources/CMake/TFrameworkConfig.cmake")
SET(Tframework_EXPECTED
  "TFramework.framework/Versions/A/Resources/tframework-config.cmake")
SET(TApp_EXPECTED
  "TApp.app/Contents/Resources/TAppConfig.cmake")
SET(Tapp_EXPECTED
  "TApp.app/Contents/Resources/cmake/tapp-config.cmake")
SET(VersionedA_EXPECTED "lib/zot-2.0/zot-config.cmake")
SET(VersionedB_EXPECTED "lib/zot-3.1/zot-config.cmake")
SET(wibbleA_EXPECTED "A/wibble-config.cmake")
SET(wibbleB_EXPECTED "B/wibble-config.cmake")

# Check the results.
FOREACH(p ${PACKAGES})
  IF(${p}_FOUND)
    # Convert to relative path for comparison to expected location.
    FILE(RELATIVE_PATH REL_${p}_CONFIG "${CMAKE_CURRENT_SOURCE_DIR}"
      "${${p}_CONFIG}")

    # Debugging output.
    IF(CMAKE_FIND_DEBUG_MODE)
      MESSAGE("Package ${p} found [${REL_${p}_CONFIG}]")
    ENDIF(CMAKE_FIND_DEBUG_MODE)

    # Check and report failure.
    IF(NOT "${REL_${p}_CONFIG}" STREQUAL "${${p}_EXPECTED}")
      MESSAGE(SEND_ERROR
        "Package ${p} should have been [${${p}_EXPECTED}] but "
        "was [${REL_${p}_CONFIG}]")
    ENDIF(NOT "${REL_${p}_CONFIG}" STREQUAL "${${p}_EXPECTED}")
  ELSE(${p}_FOUND)
    MESSAGE(SEND_ERROR "Package ${p} not found!")
  ENDIF(${p}_FOUND)
ENDFOREACH(p)

# Check that version information was extracted.
IF(NOT "${VersionedA_VERSION}" STREQUAL "2.0")
  MESSAGE(SEND_ERROR
    "Package VersionedA is version [${VersionedA_VERSION}], not [2.0]")
ENDIF(NOT "${VersionedA_VERSION}" STREQUAL "2.0")
IF(NOT "${VersionedA_VERSION_MAJOR}" STREQUAL "2")
  MESSAGE(SEND_ERROR
    "Package VersionedA is major version [${VersionedA_VERSION_MAJOR}], not [2]")
ENDIF(NOT "${VersionedA_VERSION_MAJOR}" STREQUAL "2")
IF(NOT "${VersionedA_VERSION_MINOR}" STREQUAL "0")
  MESSAGE(SEND_ERROR
    "Package VersionedA is minor version [${VersionedA_VERSION_MINOR}], not [0]")
ENDIF(NOT "${VersionedA_VERSION_MINOR}" STREQUAL "0")

IF(NOT "${VersionedB_VERSION}" STREQUAL "3.1")
  MESSAGE(SEND_ERROR
    "Package VersionedB is version [${VersionedB_VERSION}], not [3.1]")
ENDIF(NOT "${VersionedB_VERSION}" STREQUAL "3.1")
IF(NOT "${VersionedB_VERSION_MAJOR}" STREQUAL "3")
  MESSAGE(SEND_ERROR
    "Package VersionedB is major version [${VersionedB_VERSION_MAJOR}], not [3]")
ENDIF(NOT "${VersionedB_VERSION_MAJOR}" STREQUAL "3")
IF(NOT "${VersionedB_VERSION_MINOR}" STREQUAL "1")
  MESSAGE(SEND_ERROR
    "Package VersionedB is minor version [${VersionedB_VERSION_MINOR}], not [1]")
ENDIF(NOT "${VersionedB_VERSION_MINOR}" STREQUAL "1")

IF(NOT "${Special_VERSION}" STREQUAL "1.2")
  MESSAGE(SEND_ERROR
    "Package Special is version [${Special_VERSION}], not [1.2]")
ENDIF(NOT "${Special_VERSION}" STREQUAL "1.2")
IF(NOT "${Special_VERSION_MAJOR}" STREQUAL "1")
  MESSAGE(SEND_ERROR
    "Package Special is major version [${Special_VERSION_MAJOR}], not [1]")
ENDIF(NOT "${Special_VERSION_MAJOR}" STREQUAL "1")
IF(NOT "${Special_VERSION_MINOR}" STREQUAL "2")
  MESSAGE(SEND_ERROR
    "Package Special is minor version [${Special_VERSION_MINOR}], not [2]")
ENDIF(NOT "${Special_VERSION_MINOR}" STREQUAL "2")

# Test version number comparison.
IF(NOT "1.2.3.4" VERSION_LESS "1.2.3.5")
  MESSAGE(SEND_ERROR "1.2.3.4 VERSION_LESS 1.2.3.5 is not true!")
ENDIF()
IF(NOT "1.2" VERSION_LESS "1.10")
  MESSAGE(SEND_ERROR "1.2 VERSION_LESS 1.10 is not true!")
ENDIF()
IF(NOT "1.02" VERSION_GREATER "1.1")
  MESSAGE(SEND_ERROR "1.02 VERSION_GREATER 1.1 is not true!")
ENDIF()
IF("1.2.3" VERSION_GREATER "1.2.3.4")
  MESSAGE(SEND_ERROR "1.2.3 VERSION_GREATER 1.2.3.4 is not false!")
ENDIF()
IF(NOT "1.2" VERSION_EQUAL "1.2.0.0")
  MESSAGE(SEND_ERROR "1.2 VERSION_EQUAL 1.2.0.0 is not true!")
ENDIF()
