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+# Copyright (c) 2009, 2018, Oracle and/or its affiliates. All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; version 2 of the License.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
+
+MACRO (MYSQL_USE_BUNDLED_ZLIB)
+ SET(ZLIB_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/zlib ${CMAKE_BINARY_DIR}/zlib)
+ SET(BUILD_BUNDLED_ZLIB 1)
+ SET(ZLIB_LIBRARY zlib CACHE INTERNAL "Bundled zlib library")
+ SET(ZLIB_FOUND TRUE)
+ SET(WITH_ZLIB "bundled" CACHE STRING "Use bundled zlib")
+ ADD_SUBDIRECTORY(zlib)
+ENDMACRO()
+
+# MYSQL_CHECK_ZLIB_WITH_COMPRESS
+#
+# Provides the following configure options:
+# WITH_ZLIB_BUNDLED
+# If this is set,we use bindled zlib
+# If this is not set,search for system zlib.
+# if system zlib is not found, use bundled copy
+# ZLIB_LIBRARIES, ZLIB_INCLUDE_DIR and ZLIB_SOURCES
+# are set after this macro has run
+
+MACRO (MYSQL_CHECK_ZLIB_WITH_COMPRESS)
+
+ IF(WITH_ZLIB STREQUAL "bundled")
+ MYSQL_USE_BUNDLED_ZLIB()
+ ELSE()
+ INCLUDE(FindZLIB)
+ IF(ZLIB_FOUND)
+ INCLUDE(CheckFunctionExists)
+ SET(CMAKE_REQUIRED_LIBRARIES z)
+ CHECK_FUNCTION_EXISTS(crc32 HAVE_CRC32)
+ CHECK_FUNCTION_EXISTS(compressBound HAVE_COMPRESSBOUND)
+ CHECK_FUNCTION_EXISTS(deflateBound HAVE_DEFLATEBOUND)
+ SET(CMAKE_REQUIRED_LIBRARIES)
+ IF(HAVE_CRC32 AND HAVE_COMPRESSBOUND AND HAVE_DEFLATEBOUND)
+ SET(WITH_ZLIB "system" CACHE STRING
+ "Which zlib to use (possible values are 'bundled' or 'system')")
+ SET(ZLIB_SOURCES "")
+ ELSE()
+ SET(ZLIB_FOUND FALSE CACHE INTERNAL "Zlib found but not usable")
+ MESSAGE(STATUS "system zlib found but not usable")
+ ENDIF()
+ ENDIF()
+ IF(NOT ZLIB_FOUND)
+ MYSQL_USE_BUNDLED_ZLIB()
+ ENDIF()
+ ENDIF()
+ SET(HAVE_COMPRESS 1)
+ENDMACRO()