diff options
Diffstat (limited to 'cmake/modules/FindZLIBNG.cmake')
| -rw-r--r-- | cmake/modules/FindZLIBNG.cmake | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/cmake/modules/FindZLIBNG.cmake b/cmake/modules/FindZLIBNG.cmake new file mode 100644 index 00000000..ae779e4b --- /dev/null +++ b/cmake/modules/FindZLIBNG.cmake @@ -0,0 +1,130 @@ +# - Find zlib-ng +# +# Find the native ZLIBNG includes and library. +# Once done this will define +# +# ZLIBNG_INCLUDE_DIRS - where to find zlib-ng.h, etc. +# ZLIBNG_LIBRARIES - List of libraries when using zlib-ng. +# ZLIBNG_FOUND - True if zlib-ng found. +# ZLIBNG_DLL_DIR - (Windows) Path to the zlib-ng DLL. +# ZLIBNG_DLL - (Windows) Name of the zlib-ng DLL. +# ZLIBNG_PDB - (Windows) Name of the zlib-ng PDB. +# +# ZLIBNG_VERSION_STRING - The version of zlib-ng found (x.y.z) +# ZLIBNG_VERSION_MAJOR - The major version of zlib-ng +# ZLIBNG_VERSION_MINOR - The minor version of zlib-ng +# ZLIBNG_VERSION_PATCH - The patch version of zlib-ng +# ZLIBNG_VERSION_TWEAK - The tweak version of zlib-ng +# +# The following variable are provided for backward compatibility +# +# ZLIBNG_MAJOR_VERSION - The major version of zlib-ng +# ZLIBNG_MINOR_VERSION - The minor version of zlib-ng +# ZLIBNG_PATCH_VERSION - The patch version of zlib-ng + +#============================================================================= +# 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.) + +include( FindWSWinLibs ) +# Zlib is included with GLib2 +FindWSWinLibs( "zlib-ng-" "ZLIBNG_HINTS" ) + +if (NOT USE_REPOSITORY) # else we'll find Strawberry Perl's pkgconfig + find_package(PkgConfig) + pkg_search_module(ZLIBNG zlib-ng) +endif() + +FIND_PATH(ZLIBNG_INCLUDE_DIR + NAMES + zlib-ng.h + HINTS + ${ZLIBNG_INCLUDEDIR} + ${ZLIBNG_HINTS}/include + /usr/include + /usr/local/include +) + +SET(ZLIBNG_NAMES z-ng zlib-ng libz-ng.a) +FIND_LIBRARY(ZLIBNG_LIBRARY + NAMES + ${ZLIBNG_NAMES} + HINTS + ${ZLIBNG_LIBDIR} + ${ZLIBNG_HINTS}/lib + PATHS + /usr/lib + /usr/local/lib +) + +MARK_AS_ADVANCED(ZLIBNG_LIBRARY ZLIBNG_INCLUDE_DIR) + +# handle the QUIETLY and REQUIRED arguments and set ZLIBNG_FOUND to TRUE if +# all listed variables are TRUE +INCLUDE(FindPackageHandleStandardArgs) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(ZLIBNG REQUIRED_VARS ZLIBNG_LIBRARY ZLIBNG_INCLUDE_DIR + VERSION_VAR ZLIBNG_VERSION_STRING) + +if(ZLIBNG_FOUND) + IF(ZLIBNG_INCLUDE_DIR AND EXISTS "${ZLIBNG_INCLUDE_DIR}/zlib-ng.h") + FILE(STRINGS "${ZLIBNG_INCLUDE_DIR}/zlib-ng.h" ZLIBNG_H REGEX "^#define ZLIBNG_VERSION \"[^\"]*\"$") + + STRING(REGEX REPLACE "^.*ZLIBNG_VERSION \"([0-9]+).*$" "\\1" ZLIBNG_VERSION_MAJOR "${ZLIBNG_H}") + STRING(REGEX REPLACE "^.*ZLIBNG_VERSION \"[0-9]+\\.([0-9]+).*$" "\\1" ZLIBNG_VERSION_MINOR "${ZLIBNG_H}") + STRING(REGEX REPLACE "^.*ZLIBNG_VERSION \"[0-9]+\\.[0-9]+\\.([0-9]+).*$" "\\1" ZLIBNG_VERSION_PATCH "${ZLIBNG_H}") + SET(ZLIBNG_VERSION_STRING "${ZLIBNG_VERSION_MAJOR}.${ZLIBNG_VERSION_MINOR}.${ZLIBNG_VERSION_PATCH}") + + # only append a TWEAK version if it exists: + SET(ZLIBNG_VERSION_TWEAK "") + IF( "${ZLIBNG_H}" MATCHES "^.*ZLIBNG_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$") + SET(ZLIBNG_VERSION_TWEAK "${CMAKE_MATCH_1}") + SET(ZLIBNG_VERSION_STRING "${ZLIBNG_VERSION_STRING}.${ZLIBNG_VERSION_TWEAK}") + ENDIF( "${ZLIBNG_H}" MATCHES "^.*ZLIBNG_VERSION \"[0-9]+\\.[0-9]+\\.[0-9]+\\.([0-9]+).*$") + + SET(ZLIBNG_MAJOR_VERSION "${ZLIBNG_VERSION_MAJOR}") + SET(ZLIBNG_MINOR_VERSION "${ZLIBNG_VERSION_MINOR}") + SET(ZLIBNG_PATCH_VERSION "${ZLIBNG_VERSION_PATCH}") + ENDIF() + INCLUDE(CMakePushCheckState) + INCLUDE(CheckFunctionExists) + CMAKE_PUSH_CHECK_STATE() + set(CMAKE_REQUIRED_INCLUDES ${ZLIBNG_INCLUDE_DIR}) + set(CMAKE_REQUIRED_LIBRARIES ${ZLIBNG_LIBRARY}) + # + # Check for inflate() in zlib, to make sure the zlib library is + # usable. + # + # For example, on at least some versions of Fedora, if you have a + # 64-bit machine, have both the 32-bit and 64-bit versions of the + # run-time zlib package installed, and have only the *32-bit* + # version of the zlib development package installed, it'll find the + # header, and think it can use zlib, and will use it in subsequent + # tests, but it'll try and link 64-bit test programs with the 32-bit + # library, causing those tests to falsely fail. Hilarity ensues. + # + CHECK_FUNCTION_EXISTS("zng_gzopen" WITH_GZFILEOP) + IF(NOT WITH_GZFILEOP) + MESSAGE(FATAL_ERROR "zlib-ng.h found but linking with -lz failed to find zng_gzopen();") + ENDIF() + # reset + CMAKE_POP_CHECK_STATE() + + AddWSWinDLL(ZLIBNG ZLIBNG_HINTS "zlib-ng*") + SET(ZLIBNG_INCLUDE_DIRS ${ZLIBNG_INCLUDE_DIR}) + SET(ZLIBNG_LIBRARIES ${ZLIBNG_LIBRARY}) +ELSE() + SET(ZLIBNG_INCLUDE_DIRS ) + SET(ZLIBNG_LIBRARIES ) + SET(ZLIBNG_DLL_DIR ) + SET(ZLIBNG_DLL ) + SET(ZLIBNG_PDB ) +ENDIF() |