forked from Mirrors/openclonk
114 lines
4.7 KiB
CMake
114 lines
4.7 KiB
CMake
# - Find zlib
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# Find the native ZLIB includes and library.
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# Once done this will define
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#
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# ZLIB_INCLUDE_DIRS - where to find zlib.h, etc.
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# ZLIB_LIBRARIES - List of libraries when using zlib.
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# ZLIB_FOUND - True if zlib found.
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#
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# ZLIB_VERSION_STRING - The version of zlib found (x.y.z)
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# ZLIB_VERSION_MAJOR - The major version of zlib
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# ZLIB_VERSION_MINOR - The minor version of zlib
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# ZLIB_VERSION_PATCH - The patch version of zlib
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# ZLIB_VERSION_TWEAK - The tweak version of zlib
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#
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# The following variable are provided for backward compatibility
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#
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# ZLIB_MAJOR_VERSION - The major version of zlib
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# ZLIB_MINOR_VERSION - The minor version of zlib
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# ZLIB_PATCH_VERSION - The patch version of zlib
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#
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# An includer may set ZLIB_ROOT to a zlib installation root to tell
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# this module where to look.
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#=============================================================================
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# CMake - Cross Platform Makefile Generator
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# Copyright 2000-2011 Kitware, Inc., Insight Software Consortium
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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#
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# * Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# * Neither the names of Kitware, Inc., the Insight Software Consortium,
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# nor the names of their contributors may be used to endorse or promote
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# products derived from this software without specific prior written
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# permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#=============================================================================
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set(_ZLIB_SEARCHES)
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# Search ZLIB_ROOT first if it is set.
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if(ZLIB_ROOT)
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set(_ZLIB_SEARCH_ROOT PATHS ${ZLIB_ROOT} NO_DEFAULT_PATH)
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list(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_ROOT)
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endif()
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# Normal search.
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set(_ZLIB_SEARCH_NORMAL
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PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]"
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"$ENV{PROGRAMFILES}/zlib"
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)
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list(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_NORMAL)
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set(ZLIB_NAMES z zlib zlibstatic zdll zlib1 zlibd zlibd1)
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# Try each search configuration.
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foreach(search ${_ZLIB_SEARCHES})
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find_path(ZLIB_INCLUDE_DIR NAMES zlib.h ${${search}} PATH_SUFFIXES include)
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find_library(ZLIB_LIBRARY NAMES ${ZLIB_NAMES} ${${search}} PATH_SUFFIXES lib)
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endforeach()
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mark_as_advanced(ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
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if(ZLIB_INCLUDE_DIR AND EXISTS "${ZLIB_INCLUDE_DIR}/zlib.h")
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file(STRINGS "${ZLIB_INCLUDE_DIR}/zlib.h" ZLIB_H REGEX "^#define ZLIB_VERSION \"[^\"]*\"$")
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string(REGEX REPLACE "^.*ZLIB_VERSION \"([0-9]+).*$" "\\1" ZLIB_VERSION_MAJOR "${ZLIB_H}")
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string(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_MINOR "${ZLIB_H}")
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string(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_PATCH "${ZLIB_H}")
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set(ZLIB_VERSION_STRING "${ZLIB_VERSION_MAJOR}.${ZLIB_VERSION_MINOR}.${ZLIB_VERSION_PATCH}")
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# only append a TWEAK version if it exists:
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set(ZLIB_VERSION_TWEAK "")
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if( "${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$")
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set(ZLIB_VERSION_TWEAK "${CMAKE_MATCH_1}")
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set(ZLIB_VERSION_STRING "${ZLIB_VERSION_STRING}.${ZLIB_VERSION_TWEAK}")
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endif()
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set(ZLIB_MAJOR_VERSION "${ZLIB_VERSION_MAJOR}")
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set(ZLIB_MINOR_VERSION "${ZLIB_VERSION_MINOR}")
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set(ZLIB_PATCH_VERSION "${ZLIB_VERSION_PATCH}")
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endif()
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# handle the QUIETLY and REQUIRED arguments and set ZLIB_FOUND to TRUE if
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# all listed variables are TRUE
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include(FindPackageHandleStandardArgs)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(ZLIB REQUIRED_VARS ZLIB_LIBRARY ZLIB_INCLUDE_DIR
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VERSION_VAR ZLIB_VERSION_STRING)
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if(ZLIB_FOUND)
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set(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
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set(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
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endif()
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