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# Copyright (c) 2017, 2025, Oracle and/or its affiliates.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2.0,
# as published by the Free Software Foundation.
#
# This program is designed to work with certain software (including
# but not limited to OpenSSL) that is licensed under separate terms,
# as designated in a particular file or component or in included license
# documentation. The authors of MySQL hereby grant you an additional
# permission to link the program and your derivative works with the
# separately licensed software that they have either included with
# the program or referenced in the documentation.
#
# 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, version 2.0, 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 02110-1301 USA
# We support different versions of ICU:
# - "bundled" uses source code in <source dir>/extra/icu
# - "system" (typically) uses headers/libraries in /usr/lib and /usr/lib64
# - a custom installation of ICU can be used like this
# - cmake -DCMAKE_PREFIX_PATH=</path/to/custom/icu> -DWITH_ICU="system"
# or
# - cmake -DWITH_ICU=</path/to/custom/icu>
#
# The default value for WITH_ICU is "bundled".
# We create an INTERFACE library called icu_interface,
# and an ALIAS ext::icu.
# It will have the necessary INTERFACE_INCLUDE_DIRECTORIES property,
# so just link with it, no need to do INCLUDE_DIRECTORIES.
# To do: The default should probably be different depending on platform. On
# Windows, it should likely be wherever NuGet puts the libraries.
# The ICU library was introduced to MySQL sources with:
# WL#8987 Add the ICU library to handle RLIKE/REGEXP.
# in a series of patches, the first one titled
# WL#8987: ICU 59.1 source added almost without altering.
# The lowest checked version is 55 on Ubuntu 16.
SET(MIN_ICU_VERSION_REQUIRED "55")
MACRO(FIND_ICU_VERSION ICU_COMMON_DIR)
# Extract the version number. Major version information looks like:
# #define U_ICU_VERSION_MAJOR_NUM nn
FILE(STRINGS "${ICU_COMMON_DIR}/unicode/uvernum.h"
ICU_MAJOR_VERSION_INFO
REGEX "^#[ ]*define[\t ]+U_ICU_VERSION_MAJOR_NUM[\t ]+[0-9]+$"
)
STRING(REGEX REPLACE
"^.*U_ICU_VERSION_MAJOR_NUM[\t ]+([0-9]+)$" "\\1"
ICU_MAJOR_VERSION ${ICU_MAJOR_VERSION_INFO}
)
SET(ICU_VERSION "${ICU_MAJOR_VERSION}")
SET(ICU_VERSION "${ICU_VERSION}" CACHE INTERNAL "ICU major")
MESSAGE(STATUS "ICU_VERSION (${WITH_ICU}) is ${ICU_VERSION}")
MESSAGE(STATUS "ICU_INCLUDE_DIRS ${ICU_INCLUDE_DIRS}")
MESSAGE(STATUS "ICU_LIBRARIES ${ICU_LIBRARIES}")
ENDMACRO()
#
# install_root is either 'system' or is assumed to be a path.
#
FUNCTION(FIND_ICU install_root)
IF("${install_root}" STREQUAL "system")
SET(EXTRA_FIND_LIB_ARGS)
SET(EXTRA_FIND_INC_ARGS)
IF(APPLE)
SET(EXTRA_FIND_LIB_ARGS HINTS "${HOMEBREW_HOME}/icu4c"
PATH_SUFFIXES "lib")
SET(EXTRA_FIND_INC_ARGS HINTS "${HOMEBREW_HOME}/icu4c"
PATH_SUFFIXES "include")
ENDIF()
ELSE()
SET(EXTRA_FIND_LIB_ARGS HINTS "${install_root}"
PATH_SUFFIXES "lib" "lib64" NO_DEFAULT_PATH)
SET(EXTRA_FIND_INC_ARGS HINTS "${install_root}"
PATH_SUFFIXES "include" NO_DEFAULT_PATH)
ENDIF()
FIND_PATH(ICU_INCLUDE_DIR NAMES unicode/regex.h ${EXTRA_FIND_INC_ARGS})
IF (NOT ICU_INCLUDE_DIR)
MESSAGE(FATAL_ERROR "Cannot find ICU regular expression headers")
ENDIF()
IF(WIN32)
SET(ICU_LIBS icuuc icuio icudt icuin)
ELSE()
SET(ICU_LIBS icuuc icuio icudata icui18n)
ENDIF()
SET(ICU_SYSTEM_LIBRARIES)
FOREACH(ICU_LIB ${ICU_LIBS})
UNSET(ICU_LIB_PATH CACHE)
FIND_LIBRARY(ICU_LIB_PATH NAMES ${ICU_LIB} ${EXTRA_FIND_LIB_ARGS})
IF(NOT ICU_LIB_PATH)
MESSAGE(FATAL_ERROR "Cannot find the ICU library ${ICU_LIB}")
ENDIF()
LIST(APPEND ICU_SYSTEM_LIBRARIES ${ICU_LIB_PATH})
ENDFOREACH()
SET(ICU_INCLUDE_DIRS ${ICU_INCLUDE_DIR})
SET(ICU_LIBRARIES ${ICU_SYSTEM_LIBRARIES})
SET(ICU_COMMON_DIR ${ICU_INCLUDE_DIR})
FIND_ICU_VERSION(${ICU_COMMON_DIR})
ADD_LIBRARY(icu_interface INTERFACE)
TARGET_LINK_LIBRARIES(icu_interface INTERFACE ${ICU_LIBRARIES})
IF(NOT ICU_INCLUDE_DIR STREQUAL "/usr/include")
TARGET_INCLUDE_DIRECTORIES(icu_interface SYSTEM INTERFACE
${ICU_INCLUDE_DIR})
ENDIF()
ENDFUNCTION(FIND_ICU)
SET(ICU_VERSION_DIR "icu-release-77-1")
SET(BUNDLED_ICU_PATH ${CMAKE_SOURCE_DIR}/extra/icu/${ICU_VERSION_DIR})
# ICU data files come in two flavours, big and little endian.
# (Actually, there's an 'e' for EBCDIC version as well.)
IF(SOLARIS_SPARC)
SET(ICUDT_DIR "icudt77b")
ELSEIF(LINUX AND CMAKE_SYSTEM_PROCESSOR STREQUAL "s390x")
SET(ICUDT_DIR "icudt77b")
ELSE()
SET(ICUDT_DIR "icudt77l")
ENDIF()
FUNCTION(MYSQL_USE_BUNDLED_ICU)
SET(WITH_ICU "bundled" CACHE STRING "Use bundled icu library")
SET(ICU_SOURCE_DIR ${BUNDLED_ICU_PATH}/source)
SET(ICU_COMMON_DIR ${ICU_SOURCE_DIR}/common)
SET(ICU_INCLUDE_DIRS
${ICU_COMMON_DIR}
${ICU_SOURCE_DIR}/stubdata
${ICU_SOURCE_DIR}/i18n
)
# Unset the variables used for system icu.
UNSET(ICU_INCLUDE_DIR)
UNSET(ICU_INCLUDE_DIR CACHE)
UNSET(ICU_LIB_PATH)
UNSET(ICU_LIB_PATH CACHE)
ADD_SUBDIRECTORY(${CMAKE_SOURCE_DIR}/extra/icu)
SET(ICU_LIBRARIES icui18n icuuc icustubdata)
FIND_ICU_VERSION(${ICU_COMMON_DIR})
ADD_LIBRARY(icu_interface INTERFACE)
TARGET_LINK_LIBRARIES(icu_interface INTERFACE ${ICU_LIBRARIES})
TARGET_INCLUDE_DIRECTORIES(icu_interface SYSTEM BEFORE INTERFACE
${ICU_INCLUDE_DIRS})
ENDFUNCTION(MYSQL_USE_BUNDLED_ICU)
MACRO (MYSQL_CHECK_ICU)
IF(NOT WITH_ICU)
SET(WITH_ICU bundled CACHE STRING
"By default use bundled icu library")
ENDIF()
FILE(TO_CMAKE_PATH "${WITH_ICU}" WITH_ICU)
IF (WITH_ICU STREQUAL "bundled")
MYSQL_USE_BUNDLED_ICU()
ELSEIF(WITH_ICU STREQUAL "system")
FIND_ICU("system")
ELSEIF(EXISTS "${WITH_ICU}")
FIND_ICU("${WITH_ICU}")
ELSE()
MESSAGE(FATAL_ERROR "WITH_ICU must be 'bundled', 'system' or a path")
ENDIF()
IF(ICU_VERSION VERSION_LESS MIN_ICU_VERSION_REQUIRED)
MESSAGE(FATAL_ERROR
"ICU version must be at least ${MIN_ICU_VERSION_REQUIRED}, "
"found ${ICU_VERSION}.\nPlease use -DWITH_ICU=bundled")
ENDIF()
IF(WIN32)
TARGET_COMPILE_DEFINITIONS(icu_interface INTERFACE
-DU_STATIC_IMPLEMENTATION)
ENDIF()
ADD_LIBRARY(ext::icu ALIAS icu_interface)
ENDMACRO(MYSQL_CHECK_ICU)
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