forked from Mirrors/openclonk
64 lines
2.3 KiB
CMake
64 lines
2.3 KiB
CMake
# OpenClonk, http://www.openclonk.org
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#
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# Copyright (c) 2015-2016, The OpenClonk Team and contributors
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#
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# Distributed under the terms of the ISC license; see accompanying file
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# "COPYING" for details.
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#
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# "Clonk" is a registered trademark of Matthes Bender, used with permission.
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# See accompanying file "TRADEMARK" for details.
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#
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# To redistribute this file separately, substitute the full license texts
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# for the above references.
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# Locate GLEW.
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# This module defines
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# GLEW_INCLUDE_DIRS - a list of directories that need to be added to the include path
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# GLEW_LIBRARIES - a list of libraries to link against to use GLEW
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# GLEW_DEFINITIONS - a list of compile-time macros that need to be defined to use GLEW
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# GLEW_FOUND - if false, GLEW cannot be used
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find_path(GLEW_INCLUDE_DIR GL/glew.h PATH_SUFFIXES)
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mark_as_advanced(GLEW_INCLUDE_DIR)
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# Read GLEW version from header
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if (GLEW_INCLUDE_DIR AND EXISTS "${GLEW_INCLUDE_DIR}/GL/glew.h")
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file(STRINGS "${GLEW_INCLUDE_DIR}/GL/glew.h" glew_version_str REGEX "^VERSION .+")
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string(REGEX REPLACE "^VERSION (.+)" "\\1" GLEW_VERSION_STRING "${glew_version_str}")
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unset(glew_version_str)
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endif()
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# On OS other than Windows, it doesn't matter whether we confuse the shared
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# library and the static one. On Windows, we need to #define GLEW_STATIC if
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# (and only if) we're linking against the static library. "glew32" may match
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# the static library on MinGW, so we have to test for that explicitly.
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find_library(GLEW_STATIC_LIBRARY glew32s)
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mark_as_advanced(GLEW_STATIC_LIBRARY)
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find_library(GLEW_SHARED_LIBRARY NAMES GLEW glew32)
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mark_as_advanced(GLEW_SHARED_LIBRARY)
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if (GLEW_SHARED_LIBRARY)
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set(GLEW_LIBRARY "${GLEW_SHARED_LIBRARY}")
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if (WIN32 AND MINGW AND GLEW_SHARED_LIBRARY MATCHES "\\.a$")
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# not actually a shared library
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set(GLEW_DEFINITIONS "-DGLEW_STATIC")
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else()
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set(GLEW_DEFINITIONS)
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endif()
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elseif (GLEW_STATIC_LIBRARY)
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set(GLEW_LIBRARY "${GLEW_STATIC_LIBRARY}")
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set(GLEW_DEFINITIONS "-DGLEW_STATIC")
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endif()
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include(FindPackageHandleStandardArgs)
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if (NOT "${CMAKE_VERSION}" VERSION_LESS "2.8.3")
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find_package_handle_standard_args(GLEW VERSION_VAR GLEW_VERSION_STRING REQUIRED_VARS GLEW_LIBRARY GLEW_INCLUDE_DIR)
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else()
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find_package_handle_standard_args(GLEW GLEW_LIBRARY GLEW_INCLUDE_DIR)
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endif()
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if (GLEW_FOUND)
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set(GLEW_LIBRARIES "${GLEW_LIBRARY}")
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set(GLEW_INCLUDE_DIRS "${GLEW_INCLUDE_DIR}")
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endif()
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