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# Author: sum01 <sum01@protonmail.com>
# Git: https://github.com/sum01/FindBerkeleyDB
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or distribute
# this software, either in source code form or as a compiled binary, for any
# purpose, commercial or non-commercial, and by any means.
#
# In jurisdictions that recognize copyright laws, the author or authors of this
# software dedicate any and all copyright interest in the software to the public
# domain. We make this dedication for the benefit of the public at large and to
# the detriment of our heirs and successors. We intend this dedication to be an
# overt act of relinquishment in perpetuity of all present and future rights to
# this software under copyright law.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
# For more information, please refer to <http://unlicense.org>
#
# NOTE: If Berkeley DB ever gets a Pkg-config ".pc" file, add pkg_check_modules() here
# Checks if environment paths are empty, set them if they aren't
if(NOT "$ENV{BERKELEYDB_ROOT}" STREQUAL "")
set(_BERKELEYDB_PATHS "$ENV{BERKELEYDB_ROOT}")
elseif(NOT "$ENV{Berkeleydb_ROOT}" STREQUAL "")
set(_BERKELEYDB_PATHS "$ENV{Berkeleydb_ROOT}")
elseif(NOT "$ENV{BERKELEYDBROOT}" STREQUAL "")
set(_BERKELEYDB_PATHS "$ENV{BERKELEYDBROOT}")
else()
# Set just in case, as it's used regardless if it's empty or not
set(_BERKELEYDB_PATHS "")
endif()
# Allow user to pass a path instead of guessing
if(BerkeleyDB_ROOT_DIR)
set(_BERKELEYDB_PATHS "${BerkeleyDB_ROOT_DIR}")
elseif(CMAKE_SYSTEM_NAME MATCHES ".*[wW]indows.*")
# MATCHES is used to work on any devies with windows in the name
# Shameless copy-paste from FindOpenSSL.cmake v3.8
file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _programfiles)
list(APPEND _BERKELEYDB_PATHS "${_programfiles}")
# There's actually production release and version numbers in the file path.
# For example, if they're on v6.2.32: C:/Program Files/Oracle/Berkeley DB 12cR1 6.2.32/
# But this still works to find it, so I'm guessing it can accept partial path matches.
foreach(_TARGET_BERKELEYDB_PATH "Oracle/Berkeley DB" "Berkeley DB")
list(APPEND _BERKELEYDB_PATHS
"${_programfiles}/${_TARGET_BERKELEYDB_PATH}"
"C:/Program Files (x86)/${_TARGET_BERKELEYDB_PATH}"
"C:/Program Files/${_TARGET_BERKELEYDB_PATH}"
"C:/${_TARGET_BERKELEYDB_PATH}"
)
endforeach()
else()
# Paths for anything other than Windows
# Cellar/berkeley-db is for macOS from homebrew installation
list(APPEND _BERKELEYDB_PATHS
"/usr"
"/usr/local"
"/usr/local/Cellar/berkeley-db"
"/opt"
"/opt/local"
)
endif()
# Find includes path
find_path(BerkeleyDB_INCLUDE_DIRS
NAMES "db.h"
HINTS ${_BERKELEYDB_PATHS}
PATH_SUFFIXES "include" "includes"
)
# Checks if the version file exists, save the version file to a var, and fail if there's no version file
if(BerkeleyDB_INCLUDE_DIRS)
# Read the version file db.h into a variable
file(READ "${BerkeleyDB_INCLUDE_DIRS}/db.h" _BERKELEYDB_DB_HEADER)
# Parse the DB version into variables to be used in the lib names
string(REGEX REPLACE ".*DB_VERSION_MAJOR ([0-9]+).*" "\\1" BerkeleyDB_VERSION_MAJOR "${_BERKELEYDB_DB_HEADER}")
string(REGEX REPLACE ".*DB_VERSION_MINOR ([0-9]+).*" "\\1" BerkeleyDB_VERSION_MINOR "${_BERKELEYDB_DB_HEADER}")
# Patch version example on non-crypto installs: x.x.xNC
string(REGEX REPLACE ".*DB_VERSION_PATCH ([0-9]+(NC)?).*" "\\1" BerkeleyDB_VERSION_PATCH "${_BERKELEYDB_DB_HEADER}")
else()
if(BerkeleyDB_FIND_REQUIRED)
# If the find_package(BerkeleyDB REQUIRED) was used, fail since we couldn't find the header
message(FATAL_ERROR "Failed to find Berkeley DB's header file \"db.h\"! Try setting \"BerkeleyDB_ROOT_DIR\" when initiating Cmake.")
elseif(NOT BerkeleyDB_FIND_QUIETLY)
message(WARNING "Failed to find Berkeley DB's header file \"db.h\"! Try setting \"BerkeleyDB_ROOT_DIR\" when initiating Cmake.")
endif()
# Set some garbage values to the versions since we didn't find a file to read
set(BerkeleyDB_VERSION_MAJOR "0")
set(BerkeleyDB_VERSION_MINOR "0")
set(BerkeleyDB_VERSION_PATCH "0")
endif()
# The actual returned/output version variable (the others can be used if needed)
set(BerkeleyDB_VERSION "${BerkeleyDB_VERSION_MAJOR}.${BerkeleyDB_VERSION_MINOR}.${BerkeleyDB_VERSION_PATCH}")
# Finds the target library for berkeley db, since they all follow the same naming conventions
macro(findpackage_berkeleydb_get_lib _BERKELEYDB_OUTPUT_VARNAME _TARGET_BERKELEYDB_LIB)
# Different systems sometimes have a version in the lib name...
# and some have a dash or underscore before the versions.
# CMake recommends to put unversioned names before versioned names
find_library(${_BERKELEYDB_OUTPUT_VARNAME}
NAMES
"${_TARGET_BERKELEYDB_LIB}"
"lib${_TARGET_BERKELEYDB_LIB}"
"lib${_TARGET_BERKELEYDB_LIB}${BerkeleyDB_VERSION_MAJOR}.${BerkeleyDB_VERSION_MINOR}"
"lib${_TARGET_BERKELEYDB_LIB}-${BerkeleyDB_VERSION_MAJOR}.${BerkeleyDB_VERSION_MINOR}"
"lib${_TARGET_BERKELEYDB_LIB}_${BerkeleyDB_VERSION_MAJOR}.${BerkeleyDB_VERSION_MINOR}"
"lib${_TARGET_BERKELEYDB_LIB}${BerkeleyDB_VERSION_MAJOR}${BerkeleyDB_VERSION_MINOR}"
"lib${_TARGET_BERKELEYDB_LIB}-${BerkeleyDB_VERSION_MAJOR}${BerkeleyDB_VERSION_MINOR}"
"lib${_TARGET_BERKELEYDB_LIB}_${BerkeleyDB_VERSION_MAJOR}${BerkeleyDB_VERSION_MINOR}"
"lib${_TARGET_BERKELEYDB_LIB}${BerkeleyDB_VERSION_MAJOR}"
"lib${_TARGET_BERKELEYDB_LIB}-${BerkeleyDB_VERSION_MAJOR}"
"lib${_TARGET_BERKELEYDB_LIB}_${BerkeleyDB_VERSION_MAJOR}"
HINTS ${_BERKELEYDB_PATHS}
PATH_SUFFIXES "lib" "lib64" "libs" "libs64"
)
# If the library was found, add it to our list of libraries
if(${_BERKELEYDB_OUTPUT_VARNAME})
# If found, append to our libraries variable
# The ${{}} is because the first expands to target the real variable, the second expands the variable's contents...
# and the real variable's contents is the path to the lib. Thus, it appends the path of the lib to BerkeleyDB_LIBRARIES.
list(APPEND BerkeleyDB_LIBRARIES "${${_BERKELEYDB_OUTPUT_VARNAME}}")
endif()
endmacro()
# Find and set the paths of the specific library to the variable
findpackage_berkeleydb_get_lib(BerkeleyDB_LIBRARY "db")
# NOTE: Windows doesn't have a db_cxx lib, but instead compiles the cxx code into the "db" lib
findpackage_berkeleydb_get_lib(BerkeleyDB_Cxx_LIBRARY "db_cxx")
# NOTE: I don't think Linux/Unix gets an SQL lib
findpackage_berkeleydb_get_lib(BerkeleyDB_Sql_LIBRARY "db_sql")
findpackage_berkeleydb_get_lib(BerkeleyDB_Stl_LIBRARY "db_stl")
# Needed for find_package_handle_standard_args()
include(FindPackageHandleStandardArgs)
# Fails if required vars aren't found, or if the version doesn't meet specifications.
find_package_handle_standard_args(BerkeleyDB
FOUND_VAR BerkeleyDB_FOUND
REQUIRED_VARS
BerkeleyDB_INCLUDE_DIRS
BerkeleyDB_LIBRARY
VERSION_VAR BerkeleyDB_VERSION
)
# Create an imported lib for easy linking by external projects
if(BerkeleyDB_FOUND AND BerkeleyDB_LIBRARIES AND NOT TARGET Oracle::BerkeleyDB)
add_library(Oracle::BerkeleyDB UNKNOWN IMPORTED)
set_target_properties(Oracle::BerkeleyDB PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${BerkeleyDB_INCLUDE_DIRS}"
IMPORTED_LOCATION "${BerkeleyDB_LIBRARY}"
INTERFACE_LINK_LIBRARIES "${BerkeleyDB_LIBRARIES}"
)
endif()
# Only show the includes path and libraries in the GUI if they click "advanced".
# Does nothing when using the CLI
mark_as_advanced(FORCE
BerkeleyDB_INCLUDE_DIRS
BerkeleyDB_LIBRARIES
BerkeleyDB_LIBRARY
BerkeleyDB_Cxx_LIBRARY
BerkeleyDB_Sql_LIBRARY
BerkeleyDB_Stl_LIBRARY
)
include(FindPackageMessage)
# A message that tells the user what includes/libs were found, and obeys the QUIET command.
find_package_message(BerkeleyDB
"Found BerkeleyDB libraries: ${BerkeleyDB_LIBRARIES}"
"[${BerkeleyDB_LIBRARIES}[${BerkeleyDB_INCLUDE_DIRS}]]"
)
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