1 files changed, 62 insertions, 0 deletions
diff --git a/cmake/zlib.cmake b/cmake/zlib.cmake
new file mode 100644
index 00000000..9e085189
--- /dev/null
+++ b/cmake/zlib.cmake
@@ -0,0 +1,62 @@
+# 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 bundled 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()