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Diffstat (limited to 'Modules/FindZLIB.cmake')
-rw-r--r-- | Modules/FindZLIB.cmake | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/Modules/FindZLIB.cmake b/Modules/FindZLIB.cmake new file mode 100644 index 000000000..166e29181 --- /dev/null +++ b/Modules/FindZLIB.cmake @@ -0,0 +1,92 @@ +# - Find zlib +# Find the native ZLIB includes and library. +# Once done this will define +# +# ZLIB_INCLUDE_DIRS - where to find zlib.h, etc. +# ZLIB_LIBRARIES - List of libraries when using zlib. +# ZLIB_FOUND - True if zlib found. +# +# ZLIB_VERSION_STRING - The version of zlib found (x.y.z) +# ZLIB_VERSION_MAJOR - The major version of zlib +# ZLIB_VERSION_MINOR - The minor version of zlib +# ZLIB_VERSION_PATCH - The patch version of zlib +# ZLIB_VERSION_TWEAK - The tweak version of zlib +# +# The following variable are provided for backward compatibility +# +# ZLIB_MAJOR_VERSION - The major version of zlib +# ZLIB_MINOR_VERSION - The minor version of zlib +# ZLIB_PATCH_VERSION - The patch version of zlib +# +# An includer may set ZLIB_ROOT to a zlib installation root to tell +# this module where to look. + +#============================================================================= +# Copyright 2001-2011 Kitware, Inc. +# +# Distributed under the OSI-approved BSD License (the "License"); +# see accompanying file Copyright.txt for details. +# +# This software is distributed WITHOUT ANY WARRANTY; without even the +# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# See the License for more information. +#============================================================================= +# (To distribute this file outside of CMake, substitute the full +# License text for the above reference.) + +SET(_ZLIB_SEARCHES) + +# Search ZLIB_ROOT first if it is set. +IF(ZLIB_ROOT) + SET(_ZLIB_SEARCH_ROOT PATHS ${ZLIB_ROOT} NO_DEFAULT_PATH) + LIST(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_ROOT) +ENDIF() + +# Normal search. +SET(_ZLIB_SEARCH_NORMAL + PATHS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]" + "$ENV{PROGRAMFILES}/zlib" + ) +LIST(APPEND _ZLIB_SEARCHES _ZLIB_SEARCH_NORMAL) + +SET(ZLIB_NAMES z zlib zdll zlib1 zlibd zlibd1) + +# Try each search configuration. +FOREACH(search ${_ZLIB_SEARCHES}) + FIND_PATH(ZLIB_INCLUDE_DIR NAMES zlib.h ${${search}} PATH_SUFFIXES include) + FIND_LIBRARY(ZLIB_LIBRARY NAMES ${ZLIB_NAMES} ${${search}} PATH_SUFFIXES lib) +ENDFOREACH() + +MARK_AS_ADVANCED(ZLIB_LIBRARY ZLIB_INCLUDE_DIR) + +IF(ZLIB_INCLUDE_DIR AND EXISTS "${ZLIB_INCLUDE_DIR}/zlib.h") + FILE(STRINGS "${ZLIB_INCLUDE_DIR}/zlib.h" ZLIB_H REGEX "^#define ZLIB_VERSION \"[^\"]*\"$") + + STRING(REGEX REPLACE "^.*ZLIB_VERSION \"([0-9]+).*$" "\\1" ZLIB_VERSION_MAJOR "${ZLIB_H}") + STRING(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_MINOR "${ZLIB_H}") + STRING(REGEX REPLACE "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ZLIB_VERSION_PATCH "${ZLIB_H}") + SET(ZLIB_VERSION_STRING "${ZLIB_VERSION_MAJOR}.${ZLIB_VERSION_MINOR}.${ZLIB_VERSION_PATCH}") + + # only append a TWEAK version if it exists: + SET(ZLIB_VERSION_TWEAK "") + IF( "${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$") + SET(ZLIB_VERSION_TWEAK "${CMAKE_MATCH_1}") + SET(ZLIB_VERSION_STRING "${ZLIB_VERSION_STRING}.${ZLIB_VERSION_TWEAK}") + ENDIF( "${ZLIB_H}" MATCHES "^.*ZLIB_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$") + + SET(ZLIB_MAJOR_VERSION "${ZLIB_VERSION_MAJOR}") + SET(ZLIB_MINOR_VERSION "${ZLIB_VERSION_MINOR}") + SET(ZLIB_PATCH_VERSION "${ZLIB_VERSION_PATCH}") +ENDIF() + +# handle the QUIETLY and REQUIRED arguments and set ZLIB_FOUND to TRUE if +# all listed variables are TRUE +INCLUDE(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(ZLIB REQUIRED_VARS ZLIB_LIBRARY ZLIB_INCLUDE_DIR + VERSION_VAR ZLIB_VERSION_STRING) + +IF(ZLIB_FOUND) + SET(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR}) + SET(ZLIB_LIBRARIES ${ZLIB_LIBRARY}) +ENDIF() + |