Commit a7d85386 authored by Claudio's avatar Claudio Committed by Brad King
Browse files

FindGLEW: Update implementation

Replicate behaviour of upstream GLEW.

* define the imported target GLEW::glew for the shared library GLEW

* if GLEW_USE_STATIC_LIBS is defined and set to TRUE, this module instead
  defines the imported target GLEW::glew_s for the static library GLEW

* an imported target GLEW::GLEW is created as a copy of either GLEW::glew
  or GLEW::glew_s

* by setting GLEW_VERBOSE you print out the log of the module.

Fixes: #17638, #17864, #18989
parent 80b761b9
FindGLEW-updates
----------------
* The :module:`FindGLEW` module now provides an interface more consistent
with what upstream GLEW provides in its own CMake package files.
......@@ -7,64 +7,300 @@ FindGLEW
Find the OpenGL Extension Wrangler Library (GLEW)
IMPORTED Targets
Input Variables
^^^^^^^^^^^^^^^
The following variables may be set to influence this module’s behavior:
``GLEW_USE_STATIC_LIBS``
to find and create :prop_tgt:`IMPORTED` target for static linkage.
``GLEW_VERBOSE``
to output a detailed log of this module.
Imported Targets
^^^^^^^^^^^^^^^^
This module defines the :prop_tgt:`IMPORTED` target ``GLEW::GLEW``,
if GLEW has been found.
This module defines the following :ref:`Imported Targets <Imported Targets>`:
``GLEW::glew``
The GLEW shared library.
``GLEW::glew_s``
The GLEW static library, if ``GLEW_USE_STATIC_LIBS`` is set to ``TRUE``.
``GLEW::GLEW``
Duplicates either ``GLEW::glew`` or ``GLEW::glew_s`` based on availability.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
::
``GLEW_INCLUDE_DIRS``
include directories for GLEW
``GLEW_LIBRARIES``
libraries to link against GLEW
``GLEW_SHARED_LIBRARIES``
libraries to link against shared GLEW
``GLEW_STATIC_LIBRARIES``
libraries to link against static GLEW
``GLEW_FOUND``
true if GLEW has been found and can be used
``GLEW_VERSION``
GLEW version
``GLEW_VERSION_MAJOR``
GLEW major version
``GLEW_VERSION_MINOR``
GLEW minor version
``GLEW_VERSION_MICRO``
GLEW micro version
GLEW_INCLUDE_DIRS - include directories for GLEW
GLEW_LIBRARIES - libraries to link against GLEW
GLEW_FOUND - true if GLEW has been found and can be used
#]=======================================================================]
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package(GLEW CONFIG QUIET)
if(GLEW_FOUND)
find_package_handle_standard_args(GLEW DEFAULT_MSG GLEW_CONFIG)
return()
endif()
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: did not find GLEW CMake config file. Searching for libraries.")
endif()
function(__glew_set_find_library_suffix shared_or_static)
if(UNIX AND "${shared_or_static}" MATCHES "SHARED")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".so" PARENT_SCOPE)
elseif(UNIX AND "${shared_or_static}" MATCHES "STATIC")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a" PARENT_SCOPE)
elseif(APPLE AND "${shared_or_static}" MATCHES "SHARED")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".dylib;.so" PARENT_SCOPE)
elseif(APPLE AND "${shared_or_static}" MATCHES "STATIC")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".a" PARENT_SCOPE)
elseif(WIN32 AND "${shared_or_static}" MATCHES "SHARED")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".lib" PARENT_SCOPE)
elseif(WIN32 AND "${shared_or_static}" MATCHES "STATIC")
set(CMAKE_FIND_LIBRARY_SUFFIXES ".lib;.dll.a" PARENT_SCOPE)
endif()
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: CMAKE_FIND_LIBRARY_SUFFIXES for ${shared_or_static}: ${CMAKE_FIND_LIBRARY_SUFFIXES}")
endif()
endfunction()
if(GLEW_VERBOSE)
if(DEFINED GLEW_USE_STATIC_LIBS)
message(STATUS "FindGLEW: GLEW_USE_STATIC_LIBS: ${GLEW_USE_STATIC_LIBS}.")
else()
message(STATUS "FindGLEW: GLEW_USE_STATIC_LIBS is undefined. Treated as FALSE.")
endif()
endif()
find_path(GLEW_INCLUDE_DIR GL/glew.h)
mark_as_advanced(GLEW_INCLUDE_DIR)
if(NOT GLEW_LIBRARY)
find_library(GLEW_LIBRARY_RELEASE NAMES GLEW glew32 glew glew32s PATH_SUFFIXES lib64 libx32)
find_library(GLEW_LIBRARY_DEBUG NAMES GLEWd glew32d glewd PATH_SUFFIXES lib64)
set(GLEW_INCLUDE_DIRS ${GLEW_INCLUDE_DIR})
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
select_library_configurations(GLEW)
endif ()
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: GLEW_INCLUDE_DIR: ${GLEW_INCLUDE_DIR}")
message(STATUS "FindGLEW: GLEW_INCLUDE_DIRS: ${GLEW_INCLUDE_DIRS}")
endif()
if("${CMAKE_GENERATOR_PLATFORM}" MATCHES "x64" OR "${CMAKE_GENERATOR}" MATCHES "Win64")
set(_arch "x64")
else()
set(_arch "Win32")
endif()
__glew_set_find_library_suffix(SHARED)
find_library(GLEW_SHARED_LIBRARY_RELEASE
NAMES GLEW glew glew32
PATH_SUFFIXES lib lib64 libx32 lib/Release/${_arch}
PATHS ENV GLEW_ROOT)
find_library(GLEW_SHARED_LIBRARY_DEBUG
NAMES GLEWd glewd glew32d
PATH_SUFFIXES lib lib64
PATHS ENV GLEW_ROOT)
__glew_set_find_library_suffix(STATIC)
find_library(GLEW_STATIC_LIBRARY_RELEASE
NAMES GLEW glew glew32s
PATH_SUFFIXES lib lib64 libx32 lib/Release/${_arch}
PATHS ENV GLEW_ROOT)
find_library(GLEW_STATIC_LIBRARY_DEBUG
NAMES GLEWds glewds glew32ds
PATH_SUFFIXES lib lib64
PATHS ENV GLEW_ROOT)
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
select_library_configurations(GLEW_SHARED)
select_library_configurations(GLEW_STATIC)
if(NOT GLEW_USE_STATIC_LIBS)
set(GLEW_LIBRARIES ${GLEW_SHARED_LIBRARY})
else()
set(GLEW_LIBRARIES ${GLEW_STATIC_LIBRARY})
endif()
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: GLEW_SHARED_LIBRARY_RELEASE: ${GLEW_SHARED_LIBRARY_RELEASE}")
message(STATUS "FindGLEW: GLEW_STATIC_LIBRARY_RELEASE: ${GLEW_STATIC_LIBRARY_RELEASE}")
message(STATUS "FindGLEW: GLEW_SHARED_LIBRARY_DEBUG: ${GLEW_SHARED_LIBRARY_DEBUG}")
message(STATUS "FindGLEW: GLEW_STATIC_LIBRARY_DEBUG: ${GLEW_STATIC_LIBRARY_DEBUG}")
message(STATUS "FindGLEW: GLEW_SHARED_LIBRARY: ${GLEW_SHARED_LIBRARY}")
message(STATUS "FindGLEW: GLEW_STATIC_LIBRARY: ${GLEW_STATIC_LIBRARY}")
message(STATUS "FindGLEW: GLEW_LIBRARIES: ${GLEW_LIBRARIES}")
endif()
# Read version from GL/glew.h file
if(EXISTS "${GLEW_INCLUDE_DIR}/GL/glew.h")
file(STRINGS "${GLEW_INCLUDE_DIR}/GL/glew.h" _contents REGEX "^VERSION_.+ [0-9]+")
if(_contents)
string(REGEX REPLACE ".*VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" GLEW_VERSION_MAJOR "${_contents}")
string(REGEX REPLACE ".*VERSION_MINOR[ \t]+([0-9]+).*" "\\1" GLEW_VERSION_MINOR "${_contents}")
string(REGEX REPLACE ".*VERSION_MICRO[ \t]+([0-9]+).*" "\\1" GLEW_VERSION_MICRO "${_contents}")
set(GLEW_VERSION "${GLEW_VERSION_MAJOR}.${GLEW_VERSION_MINOR}.${GLEW_VERSION_MICRO}")
endif()
endif()
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: GLEW_VERSION_MAJOR: ${GLEW_VERSION_MAJOR}")
message(STATUS "FindGLEW: GLEW_VERSION_MINOR: ${GLEW_VERSION_MINOR}")
message(STATUS "FindGLEW: GLEW_VERSION_MICRO: ${GLEW_VERSION_MICRO}")
message(STATUS "FindGLEW: GLEW_VERSION: ${GLEW_VERSION}")
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
find_package_handle_standard_args(GLEW
REQUIRED_VARS GLEW_INCLUDE_DIR GLEW_LIBRARY)
REQUIRED_VARS GLEW_INCLUDE_DIRS GLEW_LIBRARIES
VERSION_VAR GLEW_VERSION)
if(GLEW_FOUND)
set(GLEW_INCLUDE_DIRS ${GLEW_INCLUDE_DIR})
if(NOT GLEW_FOUND)
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: could not found GLEW library.")
endif()
return()
endif()
if(NOT TARGET GLEW::glew AND NOT GLEW_USE_STATIC_LIBS)
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: Creating GLEW::glew imported target.")
endif()
add_library(GLEW::glew UNKNOWN IMPORTED)
set_target_properties(GLEW::glew
PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${GLEW_INCLUDE_DIRS}")
if(GLEW_SHARED_LIBRARY_RELEASE)
set_property(TARGET GLEW::glew
APPEND
PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(GLEW::glew
PROPERTIES IMPORTED_LOCATION_RELEASE "${GLEW_SHARED_LIBRARY_RELEASE}")
endif()
if(GLEW_SHARED_LIBRARY_DEBUG)
set_property(TARGET GLEW::glew
APPEND
PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GLEW::glew
PROPERTIES IMPORTED_LOCATION_DEBUG "${GLEW_SHARED_LIBRARY_DEBUG}")
endif()
if(NOT GLEW_LIBRARIES)
set(GLEW_LIBRARIES ${GLEW_LIBRARY})
elseif(NOT TARGET GLEW::glew_s AND GLEW_USE_STATIC_LIBS)
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: Creating GLEW::glew_s imported target.")
endif()
if (NOT TARGET GLEW::GLEW)
add_library(GLEW::GLEW UNKNOWN IMPORTED)
set_target_properties(GLEW::GLEW PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${GLEW_INCLUDE_DIRS}")
add_library(GLEW::glew_s UNKNOWN IMPORTED)
if(GLEW_LIBRARY_RELEASE)
set_property(TARGET GLEW::GLEW APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(GLEW::GLEW PROPERTIES IMPORTED_LOCATION_RELEASE "${GLEW_LIBRARY_RELEASE}")
set_target_properties(GLEW::glew_s
PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${GLEW_INCLUDE_DIRS}")
if(GLEW_STATIC_LIBRARY_RELEASE)
set_property(TARGET GLEW::glew_s
APPEND
PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(GLEW::glew_s
PROPERTIES IMPORTED_LOCATION_RELEASE "${GLEW_STATIC_LIBRARY_RELEASE}")
endif()
if(GLEW_STATIC_LIBRARY_DEBUG)
set_property(TARGET GLEW::glew_s
APPEND
PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GLEW::glew_s
PROPERTIES IMPORTED_LOCATION_DEBUG "${GLEW_STATIC_LIBRARY_DEBUG}")
endif()
endif()
if(NOT TARGET GLEW::GLEW)
if(GLEW_VERBOSE)
message(STATUS "FindGLEW: Creating GLEW::GLEW imported target.")
endif()
add_library(GLEW::GLEW UNKNOWN IMPORTED)
set_target_properties(GLEW::GLEW
PROPERTIES INTERFACE_INCLUDE_DIRECTORIES "${GLEW_INCLUDE_DIRS}")
if(TARGET GLEW::glew)
if(GLEW_SHARED_LIBRARY_RELEASE)
set_property(TARGET GLEW::GLEW
APPEND
PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(GLEW::GLEW
PROPERTIES IMPORTED_LOCATION_RELEASE "${GLEW_SHARED_LIBRARY_RELEASE}")
endif()
if(GLEW_SHARED_LIBRARY_DEBUG)
set_property(TARGET GLEW::GLEW
APPEND
PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GLEW::GLEW
PROPERTIES IMPORTED_LOCATION_DEBUG "${GLEW_SHARED_LIBRARY_DEBUG}")
endif()
if(GLEW_LIBRARY_DEBUG)
set_property(TARGET GLEW::GLEW APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GLEW::GLEW PROPERTIES IMPORTED_LOCATION_DEBUG "${GLEW_LIBRARY_DEBUG}")
elseif(TARGET GLEW::glew_s)
if(GLEW_STATIC_LIBRARY_RELEASE)
set_property(TARGET GLEW::GLEW
APPEND
PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(GLEW::GLEW
PROPERTIES IMPORTED_LOCATION_RELEASE "${GLEW_STATIC_LIBRARY_RELEASE}")
endif()
if(NOT GLEW_LIBRARY_RELEASE AND NOT GLEW_LIBRARY_DEBUG)
set_property(TARGET GLEW::GLEW APPEND PROPERTY IMPORTED_LOCATION "${GLEW_LIBRARY}")
if(GLEW_STATIC_LIBRARY_DEBUG AND GLEW_USE_STATIC_LIBS)
set_property(TARGET GLEW::GLEW
APPEND
PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GLEW::GLEW
PROPERTIES IMPORTED_LOCATION_DEBUG "${GLEW_STATIC_LIBRARY_DEBUG}")
endif()
elseif(GLEW_VERBOSE)
message(WARNING "FindGLEW: no `GLEW::glew` or `GLEW::glew_s` target was created. Something went wrong in FindGLEW target creation.")
endif()
endif()
mark_as_advanced(GLEW_INCLUDE_DIR)
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