summaryrefslogtreecommitdiff
path: root/cmake/modules/FindZLIB.cmake
blob: 212867e7694e2e517162c06147ace7f5a51d9e67 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
# - 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_DLL_DIR        - (Windows) Path to the zlib DLL.
#  ZLIB_DLL            - (Windows) Name of the zlib DLL.
#
#  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

#=============================================================================
# Copyright 2001-2009 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.)

# We set these manually on Windows.
#INCLUDE(FindWSWinLibs)
#FindWSWinLibs("zlib" "ZLIB_HINTS")

if (NOT ZLIB_INCLUDE_DIR OR NOT ZLIB_LIBRARY)
    find_package(PkgConfig)
    pkg_search_module(ZLIB zlib)

    FIND_PATH(ZLIB_INCLUDE_DIR
        NAMES
            zlib.h
        HINTS
            "${ZLIB_INCLUDEDIR}"
            ${ZLIB_HINTS}/include
            ${ZLIB_HINTS}
        PATHS
            "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/include"
    )

    SET(ZLIB_NAMES z zlib zdll zlib1 zlibd zlibd1)
    FIND_LIBRARY(ZLIB_LIBRARY
        NAMES
            ${ZLIB_NAMES}
        HINTS
            "${ZLIB_LIBDIR}"
            ${ZLIB_HINTS}/lib
            ${ZLIB_HINTS}
        PATHS
            "[HKEY_LOCAL_MACHINE\\SOFTWARE\\GnuWin32\\Zlib;InstallPath]/lib"
    )
endif()
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()

INCLUDE(CheckFunctionExists)
SET(CMAKE_REQUIRED_LIBRARIES ${ZLIB_LIBRARY})
CHECK_FUNCTION_EXISTS("inflatePrime" HAVE_INFLATEPRIME)
# reset
SET(CMAKE_REQUIRED_LIBRARIES "")

# handle the QUIETLY and REQUIRED arguments and set ZLIB_FOUND to TRUE if
# all listed variables are TRUE
INCLUDE(FindPackageHandleStandardArgs)
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 ${ZLIB_LIBRARY})
    #if (WIN32)
    #  set ( ZLIB_DLL_DIR "${ZLIB_HINTS}"
    #    CACHE PATH "Path to the Zlib DLL"
    #  )
    #  file( GLOB _zlib_dll RELATIVE "${ZLIB_DLL_DIR}"
    #    "${ZLIB_DLL_DIR}/zlib1.dll"
    #  )
    #  set ( ZLIB_DLL ${_zlib_dll}
    #    # We're storing filenames only. Should we use STRING instead?
    #    CACHE FILEPATH "Zlib DLL file name"
    #  )
    #  mark_as_advanced( ZLIB_DLL_DIR ZLIB_DLL )
    #endif()
ELSE()
    SET(ZLIB_INCLUDE_DIRS )
    SET(ZLIB_LIBRARIES )
    SET(ZLIB_DLL_DIR )
    SET(ZLIB_DLL )
ENDIF()