# Copyright (c) 2009, 2024, 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

#
# Headers which need to be checked for abi/api compatibility are in
# API_PREPROCESSOR_HEADER. plugin.h is tested implicitly via
# plugin_audit.h and plugin_ftparser.h.
#
# We use gcc specific preprocessing command and sed/diff, so it will
# only be run on Unix and only if gcc is used. On some Unixes,
# (Solaris) sed or diff might act differently from GNU, so we run only
# on systems we can trust.
# On Windows we use the Windows subsystem for Linux and gcc and sed
# installed in it, if available.
SET(RUN_ABI_CHECK 0)
IF(LINUX AND MY_COMPILER_IS_GNU)
  SET(RUN_ABI_CHECK 1)
ELSEIF(WIN32)
  FIND_PROGRAM(WSL_EXECUTABLE wsl HINTS C:/Windows/Sysnative)
  IF (WSL_EXECUTABLE)
    SET (COMPILER "gcc")
    # Check that the compiler is available under WSL.
    EXECUTE_PROCESS(
      COMMAND ${WSL_EXECUTABLE} which ${COMPILER}
      OUTPUT_STRIP_TRAILING_WHITESPACE OUTPUT_VARIABLE COMPILER_LOCATION)
    IF (COMPILER_LOCATION STREQUAL "/usr/bin/gcc")
      SET(RUN_ABI_CHECK 1)
      MESSAGE(STATUS "Will do ABI check using ${WSL_EXECUTABLE} (gcc/sed)")
    ENDIF()
  ENDIF()
ENDIF()

SET(API_PREPROCESSOR_HEADER
  ${CMAKE_SOURCE_DIR}/include/mysql/plugin_audit.h
  ${CMAKE_SOURCE_DIR}/include/mysql/plugin_ftparser.h
  ${CMAKE_SOURCE_DIR}/include/mysql.h
  ${CMAKE_SOURCE_DIR}/include/mysql/client_plugin.h
  ${CMAKE_SOURCE_DIR}/include/mysql/plugin_auth.h
  ${CMAKE_SOURCE_DIR}/include/mysql/plugin_keyring.h
)
IF(NOT WITHOUT_SERVER)
  LIST(APPEND API_PREPROCESSOR_HEADER
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_thread_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_mutex_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_rwlock_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_cond_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_file_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_socket_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_table_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_mdl_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_idle_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_stage_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_statement_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_transaction_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_memory_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_error_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_system_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/psi/psi_abi_metric_v1.h
    ${CMAKE_SOURCE_DIR}/include/mysql/services.h
  )
ENDIF()

IF(MY_COMPILER_IS_GNU)
  IF(CMAKE_C_COMPILER MATCHES "ccache$")
    SET(COMPILER ${CMAKE_C_COMPILER_ARG1})
    STRING(REGEX REPLACE "^ " "" COMPILER ${COMPILER})
  ELSE()
    SET(COMPILER ${CMAKE_C_COMPILER})
  ENDIF()
ENDIF()

IF(RUN_ABI_CHECK)
  UNSET(API_PP_FILES)
  FOREACH(file ${API_PREPROCESSOR_HEADER})
    LIST(APPEND API_PP_FILES ${file}.pp)
  ENDFOREACH()

  ADD_CUSTOM_COMMAND(
    OUTPUT ${CMAKE_BINARY_DIR}/abi_check.out
    COMMAND ${CMAKE_COMMAND}
    -DCOMPILER=${COMPILER}
    -DSOURCE_DIR=${CMAKE_SOURCE_DIR}
    -DBINARY_DIR=${CMAKE_BINARY_DIR}
    -DWSL_EXECUTABLE=${WSL_EXECUTABLE}
    "-DABI_HEADERS=${API_PREPROCESSOR_HEADER}"
    -P ${CMAKE_SOURCE_DIR}/cmake/do_abi_check.cmake
    DEPENDS ${API_PREPROCESSOR_HEADER} ${API_PP_FILES}
    VERBATIM
  )

  ADD_CUSTOM_TARGET(abi_check ALL
    DEPENDS ${CMAKE_BINARY_DIR}/abi_check.out
    )
ENDIF()