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# Written in 2016 by Henrik Steffen Gaßmann <henrik@gassmann.onl>
#
# To the extent possible under law, the author(s) have dedicated all copyright
# and related and neighboring rights to this software to the public domain
# worldwide. This software is distributed without any warranty.
#
# You should have received a copy of the CC0 Public Domain Dedication along with
# this software. If not, see
#
# http://creativecommons.org/publicdomain/zero/1.0/
#
# ##############################################################################
# Tries to find the local libsodium installation.
#
# On Windows the sodium_DIR environment variable is used as a default hint which
# can be overridden by setting the corresponding cmake variable.
#
# Once done the following variables will be defined:
#
# sodium_FOUND sodium_INCLUDE_DIR sodium_LIBRARY_DEBUG sodium_LIBRARY_RELEASE
# sodium_VERSION_STRING
#
# Furthermore an imported "sodium" target is created.
#
if(CMAKE_C_COMPILER_ID STREQUAL "GNU" OR CMAKE_C_COMPILER_ID STREQUAL "Clang")
set(_GCC_COMPATIBLE 1)
endif()
# static library option
if(NOT DEFINED sodium_USE_STATIC_LIBS)
option(sodium_USE_STATIC_LIBS "enable to statically link against sodium" OFF)
endif()
if(NOT (sodium_USE_STATIC_LIBS EQUAL sodium_USE_STATIC_LIBS_LAST))
unset(sodium_LIBRARY CACHE)
unset(sodium_LIBRARY_DEBUG CACHE)
unset(sodium_LIBRARY_RELEASE CACHE)
unset(sodium_DLL_DEBUG CACHE)
unset(sodium_DLL_RELEASE CACHE)
set(sodium_USE_STATIC_LIBS_LAST
${sodium_USE_STATIC_LIBS}
CACHE INTERNAL "internal change tracking variable")
endif()
# ##############################################################################
# UNIX
if(UNIX)
# import pkg-config
find_package(PkgConfig QUIET)
if(PKG_CONFIG_FOUND)
pkg_check_modules(sodium_PKG QUIET libsodium)
endif()
if(sodium_USE_STATIC_LIBS)
if(sodium_PKG_STATIC_LIBRARIES)
foreach(_libname ${sodium_PKG_STATIC_LIBRARIES})
if(NOT _libname MATCHES "^lib.*\\.a$") # ignore strings already ending
# with .a
list(INSERT sodium_PKG_STATIC_LIBRARIES 0 "lib${_libname}.a")
endif()
endforeach()
list(REMOVE_DUPLICATES sodium_PKG_STATIC_LIBRARIES)
else()
# if pkgconfig for libsodium doesn't provide static lib info, then
# override PKG_STATIC here..
set(sodium_PKG_STATIC_LIBRARIES libsodium.a)
endif()
set(XPREFIX sodium_PKG_STATIC)
else()
if(sodium_PKG_LIBRARIES STREQUAL "")
set(sodium_PKG_LIBRARIES sodium)
endif()
set(XPREFIX sodium_PKG)
endif()
find_path(sodium_INCLUDE_DIR sodium.h HINTS ${${XPREFIX}_INCLUDE_DIRS})
find_library(sodium_LIBRARY_DEBUG
NAMES ${${XPREFIX}_LIBRARIES}
HINTS ${${XPREFIX}_LIBRARY_DIRS})
find_library(sodium_LIBRARY_RELEASE
NAMES ${${XPREFIX}_LIBRARIES}
HINTS ${${XPREFIX}_LIBRARY_DIRS})
# ############################################################################
# Windows
elseif(WIN32)
set(sodium_DIR "$ENV{sodium_DIR}" CACHE FILEPATH "sodium install directory")
mark_as_advanced(sodium_DIR)
find_path(sodium_INCLUDE_DIR sodium.h
HINTS ${sodium_DIR}
PATH_SUFFIXES include)
if(MSVC)
# detect target architecture
file(WRITE "${CMAKE_CURRENT_BINARY_DIR}/arch.c" [=[
#if defined _M_IX86
#error ARCH_VALUE x86_32
#elif defined _M_X64
#error ARCH_VALUE x86_64
#endif
#error ARCH_VALUE unknown
]=])
try_compile(_UNUSED_VAR "${CMAKE_CURRENT_BINARY_DIR}"
"${CMAKE_CURRENT_BINARY_DIR}/arch.c"
OUTPUT_VARIABLE _COMPILATION_LOG)
string(REGEX
REPLACE ".*ARCH_VALUE ([a-zA-Z0-9_]+).*"
"\\1"
_TARGET_ARCH
"${_COMPILATION_LOG}")
# construct library path
if(_TARGET_ARCH STREQUAL "x86_32")
string(APPEND _PLATFORM_PATH "Win32")
elseif(_TARGET_ARCH STREQUAL "x86_64")
string(APPEND _PLATFORM_PATH "x64")
else()
message(
FATAL_ERROR
"the ${_TARGET_ARCH} architecture is not supported by Findsodium.cmake."
)
endif()
string(APPEND _PLATFORM_PATH "/$$CONFIG$$")
if(MSVC_VERSION LESS 1900)
math(EXPR _VS_VERSION "${MSVC_VERSION} / 10 - 60")
else()
math(EXPR _VS_VERSION "${MSVC_VERSION} / 10 - 50")
endif()
string(APPEND _PLATFORM_PATH "/v${_VS_VERSION}")
if(sodium_USE_STATIC_LIBS)
string(APPEND _PLATFORM_PATH "/static")
else()
string(APPEND _PLATFORM_PATH "/dynamic")
endif()
string(REPLACE "$$CONFIG$$"
"Debug"
_DEBUG_PATH_SUFFIX
"${_PLATFORM_PATH}")
string(REPLACE "$$CONFIG$$"
"Release"
_RELEASE_PATH_SUFFIX
"${_PLATFORM_PATH}")
find_library(sodium_LIBRARY_DEBUG libsodium.lib
HINTS ${sodium_DIR}
PATH_SUFFIXES ${_DEBUG_PATH_SUFFIX})
find_library(sodium_LIBRARY_RELEASE libsodium.lib
HINTS ${sodium_DIR}
PATH_SUFFIXES ${_RELEASE_PATH_SUFFIX})
if(NOT sodium_USE_STATIC_LIBS)
set(CMAKE_FIND_LIBRARY_SUFFIXES_BCK ${CMAKE_FIND_LIBRARY_SUFFIXES})
set(CMAKE_FIND_LIBRARY_SUFFIXES ".dll")
find_library(sodium_DLL_DEBUG libsodium
HINTS ${sodium_DIR}
PATH_SUFFIXES ${_DEBUG_PATH_SUFFIX})
find_library(sodium_DLL_RELEASE libsodium
HINTS ${sodium_DIR}
PATH_SUFFIXES ${_RELEASE_PATH_SUFFIX})
set(CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES_BCK})
endif()
elseif(_GCC_COMPATIBLE)
if(sodium_USE_STATIC_LIBS)
find_library(sodium_LIBRARY_DEBUG libsodium.a
HINTS ${sodium_DIR}
PATH_SUFFIXES lib)
find_library(sodium_LIBRARY_RELEASE libsodium.a
HINTS ${sodium_DIR}
PATH_SUFFIXES lib)
else()
find_library(sodium_LIBRARY_DEBUG libsodium.dll.a
HINTS ${sodium_DIR}
PATH_SUFFIXES lib)
find_library(sodium_LIBRARY_RELEASE libsodium.dll.a
HINTS ${sodium_DIR}
PATH_SUFFIXES lib)
file(GLOB _DLL
LIST_DIRECTORIES false
RELATIVE "${sodium_DIR}/bin"
"${sodium_DIR}/bin/libsodium*.dll")
find_library(sodium_DLL_DEBUG ${_DLL} libsodium
HINTS ${sodium_DIR}
PATH_SUFFIXES bin)
find_library(sodium_DLL_RELEASE ${_DLL} libsodium
HINTS ${sodium_DIR}
PATH_SUFFIXES bin)
endif()
else()
message(FATAL_ERROR "this platform is not supported by FindSodium.cmake")
endif()
# ############################################################################
# unsupported
else()
message(FATAL_ERROR "this platform is not supported by FindSodium.cmake")
endif()
# ##############################################################################
# common stuff
# extract sodium version
if(sodium_INCLUDE_DIR)
set(_VERSION_HEADER "${sodium_INCLUDE_DIR}/sodium/version.h")
if(EXISTS "${_VERSION_HEADER}")
file(READ "${_VERSION_HEADER}" _VERSION_HEADER_CONTENT)
string(
REGEX
REPLACE
".*#[ \t]*define[ \t]*sodium_VERSION_STRING_STRING[ \t]*\"([^\n]*)\".*"
"\\1"
sodium_VERSION_STRING
"${_VERSION_HEADER_CONTENT}")
set(sodium_VERSION_STRING "${sodium_VERSION_STRING}")
endif()
endif()
# communicate results
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(sodium
REQUIRED_VARS
sodium_LIBRARY_RELEASE
sodium_LIBRARY_DEBUG
sodium_INCLUDE_DIR
VERSION_VAR
sodium_VERSION_STRING)
# mark file paths as advanced
mark_as_advanced(sodium_INCLUDE_DIR)
mark_as_advanced(sodium_LIBRARY_DEBUG)
mark_as_advanced(sodium_LIBRARY_RELEASE)
if(WIN32)
mark_as_advanced(sodium_DLL_DEBUG)
mark_as_advanced(sodium_DLL_RELEASE)
endif()
# create imported target
if(sodium_USE_STATIC_LIBS)
set(_LIB_TYPE STATIC)
else()
set(_LIB_TYPE SHARED)
endif()
add_library(sodium ${_LIB_TYPE} IMPORTED)
set_target_properties(sodium
PROPERTIES INTERFACE_INCLUDE_DIRECTORIES
"${sodium_INCLUDE_DIR}"
IMPORTED_LINK_INTERFACE_LANGUAGES
"C")
if(sodium_USE_STATIC_LIBS)
set_target_properties(sodium
PROPERTIES INTERFACE_COMPILE_DEFINITIONS
"SODIUM_STATIC"
IMPORTED_LOCATION
"${sodium_LIBRARY_RELEASE}"
IMPORTED_LOCATION_DEBUG
"${sodium_LIBRARY_DEBUG}")
else()
if(UNIX)
set_target_properties(sodium
PROPERTIES IMPORTED_LOCATION
"${sodium_LIBRARY_RELEASE}"
IMPORTED_LOCATION_DEBUG
"${sodium_LIBRARY_DEBUG}")
elseif(WIN32)
set_target_properties(sodium
PROPERTIES IMPORTED_IMPLIB
"${sodium_LIBRARY_RELEASE}"
IMPORTED_IMPLIB_DEBUG
"${sodium_LIBRARY_DEBUG}")
if(NOT (sodium_DLL_DEBUG MATCHES ".*-NOTFOUND"))
set_target_properties(sodium
PROPERTIES IMPORTED_LOCATION_DEBUG
"${sodium_DLL_DEBUG}")
endif()
if(NOT (sodium_DLL_RELEASE MATCHES ".*-NOTFOUND"))
set_target_properties(sodium
PROPERTIES IMPORTED_LOCATION_RELWITHDEBINFO
"${sodium_DLL_RELEASE}"
IMPORTED_LOCATION_MINSIZEREL
"${sodium_DLL_RELEASE}"
IMPORTED_LOCATION_RELEASE
"${sodium_DLL_RELEASE}")
endif()
endif()
endif()
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