katie/cmake/modules/FindMySQL.cmake

# - Try to find MySQL
# Once done this will define
#
#  MYSQL_FOUND - system has MySQL
#  MYSQL_INCLUDES - the MySQL include directory
#  MYSQL_LIBRARIES - the libraries needed to use MySQL
#
# Copyright (c) 2015-2020, Ivailo Monev, <xakepa10@gmail.com>
#
# Redistribution and use is allowed according to the terms of the BSD license.

# Only MariaDB provides pkg-config files and only in recent versions
if(NOT WIN32)
    include(FindPkgConfig)
    pkg_check_modules(PC_MYSQL QUIET libmariadb)
endif()

# However, both provide config program
find_program(MYSQL_CONFIG
    NAMES mariadb_config mysql_config
    HINTS $ENV{MYSQLDIR}/bin
)

if(MYSQL_CONFIG)
    execute_process(
        COMMAND ${MYSQL_CONFIG} --variable=pkgincludedir
        RESULT_VARIABLE procerror1
        OUTPUT_VARIABLE MYSQL_INCLUDES
        OUTPUT_STRIP_TRAILING_WHITESPACE
    )
    execute_process(
        COMMAND ${MYSQL_CONFIG} --libmysqld-libs
        RESULT_VARIABLE proceerror2
        OUTPUT_VARIABLE MYSQL_LIBRARIES
        OUTPUT_STRIP_TRAILING_WHITESPACE
    )
    execute_process(
        COMMAND ${MYSQL_CONFIG} --version
        RESULT_VARIABLE proceerror3
        OUTPUT_VARIABLE MYSQL_VERSION
        OUTPUT_STRIP_TRAILING_WHITESPACE
    )
    # just in case, MYSQL_VERSION is not critical
    if(NOT procerror1 STREQUAL "0" OR NOT proceerror2 STREQUAL "0")
        set(MYSQL_INCLUDES)
        set(MYSQL_LIBRARIES)
        set(MYSQL_VERSION)
    endif()
endif()

if(NOT MYSQL_INCLUDES OR NOT MYSQL_LIBRARIES)
    find_path(MYSQL_INCLUDES
        NAMES mysql.h
        PATH_SUFFIXES mariadb mysql
        HINTS $ENV{MYSQLDIR}/include ${PC_MYSQL_INCLUDEDIR}
    )

    find_library(MYSQL_LIBRARIES
        NAMES mariadbd mysqld
        HINTS $ENV{MYSQLDIR}/lib ${PC_MYSQL_LIBDIR}
    )
endif()

include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(MySQL
    VERSION_VAR MYSQL_VERSION
    REQUIRED_VARS MYSQL_LIBRARIES MYSQL_INCLUDES
)

mark_as_advanced(MYSQL_INCLUDES MYSQL_LIBRARIES)