diff --git a/cmake_modules/Findjsoncpp.cmake b/cmake_modules/Findjsoncpp.cmake new file mode 100644 index 0000000000000000000000000000000000000000..67045e97b1b57bb2d3362297f0e9b22ea15de4a4 --- /dev/null +++ b/cmake_modules/Findjsoncpp.cmake @@ -0,0 +1,392 @@ +# - Find jsoncpp - Overarching find module +# This is a over-arching find module to find older jsoncpp versions and those sadly built +# without JSONCPP_WITH_CMAKE_PACKAGE=ON, as well as those built with the cmake config file. +# It also wraps the different versions of the module. +# +# On CMake 3.0 and newer: +# JsonCpp::JsonCpp - Imported target (possibly an interface/alias) to use: +# if anything is populated, this is. If both shared and static are found, then +# this will be the static version on DLL platforms and shared on non-DLL platforms. +# JsonCpp::JsonCppShared - Imported target (possibly an interface/alias) for a +# shared library version. +# JsonCpp::JsonCppStatic - Imported target (possibly an interface/alias) for a +# static library version. +# +# On all CMake versions: (Note that on CMake 2.8.10 and earlier, you may need to use JSONCPP_INCLUDE_DIRS) +# JSONCPP_LIBRARY - wraps JsonCpp::JsonCpp or equiv. +# JSONCPP_LIBRARY_IS_SHARED - if we know for sure JSONCPP_LIBRARY is shared, this is true-ish. We try to "un-set" it if we don't know one way or another. +# JSONCPP_LIBRARY_SHARED - wraps JsonCpp::JsonCppShared or equiv. +# JSONCPP_LIBRARY_STATIC - wraps JsonCpp::JsonCppStatic or equiv. +# JSONCPP_INCLUDE_DIRS - Include directories - should (generally?) not needed if you require CMake 2.8.11+ since it handles target include directories. +# +# JSONCPP_FOUND - True if JsonCpp was found. +# +# Original Author: +# 2016 Ryan Pavlik +# Incorporates work from the module contributed to VRPN under the same license: +# 2011 Philippe Crassous (ENSAM ParisTech / Institut Image) p.crassous _at_ free.fr +# +# Copyright Philippe Crassous 2011. +# Copyright Sensics, Inc. 2016. +# Distributed under the Boost Software License, Version 1.0. +# (See accompanying file LICENSE_1_0.txt or copy at +# http://www.boost.org/LICENSE_1_0.txt) + +set(__jsoncpp_have_namespaced_targets OFF) +set(__jsoncpp_have_interface_support OFF) +if(NOT ("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" LESS 3.0)) + set(__jsoncpp_have_namespaced_targets ON) + set(__jsoncpp_have_interface_support ON) +elseif(("${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}" EQUAL 2.8) AND "${CMAKE_PATCH_VERSION}" GREATER 10) + set(__jsoncpp_have_interface_support ON) +endif() + +# sets __jsoncpp_have_jsoncpplib based on whether or not we have a real imported jsoncpp_lib target. +macro(_jsoncpp_check_for_real_jsoncpplib) + set(__jsoncpp_have_jsoncpplib FALSE) + if(TARGET jsoncpp_lib) + get_property(__jsoncpp_lib_type TARGET jsoncpp_lib PROPERTY TYPE) + # We make interface libraries. If an actual config module made it, it would be an imported library. + if(NOT __jsoncpp_lib_type STREQUAL "INTERFACE_LIBRARY") + set(__jsoncpp_have_jsoncpplib TRUE) + endif() + endif() + #message(STATUS "__jsoncpp_have_jsoncpplib ${__jsoncpp_have_jsoncpplib}") +endmacro() + +include(FindPackageHandleStandardArgs) +# Ensure that if this is TRUE later, it's because we set it. +set(JSONCPP_FOUND FALSE) +set(__jsoncpp_have_jsoncpplib FALSE) + +# See if we find a CMake config file - there is no harm in calling this more than once, +# and we need to call it at least once every CMake invocation to create the original +# imported targets, since those don't stick around like cache variables. +find_package(jsoncpp QUIET NO_MODULE) + +if(jsoncpp_FOUND) + # Build a string to help us figure out when to invalidate our cache variables. + # start with where we found jsoncpp + set(__jsoncpp_info_string "[${jsoncpp_DIR}]") + + # part of the string to indicate if we found a real jsoncpp_lib (and what kind) + _jsoncpp_check_for_real_jsoncpplib() + + macro(_jsoncpp_apply_map_config target) + if(MSVC) + # Can't do this - different runtimes, incompatible ABI, etc. + set(_jsoncpp_debug_fallback) + else() + set(_jsoncpp_debug_fallback DEBUG) + #osvr_stash_map_config(DEBUG DEBUG RELWITHDEBINFO RELEASE MINSIZEREL NONE) + endif() + # Appending, just in case using project or upstream fixes this. + set_property(TARGET ${target} APPEND PROPERTY MAP_IMPORTED_CONFIG_RELEASE RELEASE RELWITHDEBINFO MINSIZEREL NONE ${_jsoncpp_debug_fallback}) + set_property(TARGET ${target} APPEND PROPERTY MAP_IMPORTED_CONFIG_RELWITHDEBINFO RELWITHDEBINFO RELEASE MINSIZEREL NONE ${_jsoncpp_debug_fallback}) + set_property(TARGET ${target} APPEND PROPERTY MAP_IMPORTED_CONFIG_MINSIZEREL MINSIZEREL RELEASE RELWITHDEBINFO NONE ${_jsoncpp_debug_fallback}) + set_property(TARGET ${target} APPEND PROPERTY MAP_IMPORTED_CONFIG_NONE RELEASE RELWITHDEBINFO MINSIZEREL ${_jsoncpp_debug_fallback}) + if(NOT MSVC) + set_property(TARGET ${target} APPEND PROPERTY MAP_IMPORTED_CONFIG_DEBUG DEBUG RELWITHDEBINFO RELEASE MINSIZEREL NONE) + endif() + endmacro() + if(__jsoncpp_have_jsoncpplib) + list(APPEND __jsoncpp_info_string "[${__jsoncpp_lib_type}]") + _jsoncpp_apply_map_config(jsoncpp_lib) + else() + list(APPEND __jsoncpp_info_string "[]") + endif() + # part of the string to indicate if we found jsoncpp_lib_static + if(TARGET jsoncpp_lib_static) + list(APPEND __jsoncpp_info_string "[T]") + _jsoncpp_apply_map_config(jsoncpp_lib_static) + else() + list(APPEND __jsoncpp_info_string "[]") + endif() +endif() + + +# If we found something, and it's not the exact same as what we've found before... +# NOTE: The contents of this "if" block update only (internal) cache variables! +# (since this will only get run the first CMake pass that finds jsoncpp or that finds a different/updated install) +if(jsoncpp_FOUND AND NOT __jsoncpp_info_string STREQUAL "${JSONCPP_CACHED_JSONCPP_DIR_DETAILS}") + #message("Updating jsoncpp cache variables! ${__jsoncpp_info_string}") + set(JSONCPP_CACHED_JSONCPP_DIR_DETAILS "${__jsoncpp_info_string}" CACHE INTERNAL "" FORCE) + unset(JSONCPP_IMPORTED_LIBRARY_SHARED) + unset(JSONCPP_IMPORTED_LIBRARY_STATIC) + unset(JSONCPP_IMPORTED_LIBRARY) + unset(JSONCPP_IMPORTED_INCLUDE_DIRS) + unset(JSONCPP_IMPORTED_LIBRARY_IS_SHARED) + + # if(__jsoncpp_have_jsoncpplib) is equivalent to if(TARGET jsoncpp_lib) except it excludes our + # "invented" jsoncpp_lib interface targets, made for convenience purposes after this block. + + if(__jsoncpp_have_jsoncpplib AND TARGET jsoncpp_lib_static) + + # A veritable cache of riches - we have both shared and static! + set(JSONCPP_IMPORTED_LIBRARY_SHARED jsoncpp_lib CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY_STATIC jsoncpp_lib_static CACHE INTERNAL "" FORCE) + if(WIN32 OR CYGWIN OR MINGW) + # DLL platforms: static library should be default + set(JSONCPP_IMPORTED_LIBRARY ${JSONCPP_IMPORTED_LIBRARY_STATIC} CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY_IS_SHARED FALSE CACHE INTERNAL "" FORCE) + else() + # Other platforms - might require PIC to be linked into shared libraries, so safest to prefer shared. + set(JSONCPP_IMPORTED_LIBRARY ${JSONCPP_IMPORTED_LIBRARY_SHARED} CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY_IS_SHARED TRUE CACHE INTERNAL "" FORCE) + endif() + + elseif(TARGET jsoncpp_lib_static) + # Well, only one variant, but we know for sure that it's static. + set(JSONCPP_IMPORTED_LIBRARY_STATIC jsoncpp_lib_static CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY jsoncpp_lib_static CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY_IS_SHARED FALSE CACHE INTERNAL "" FORCE) + + elseif(__jsoncpp_have_jsoncpplib AND __jsoncpp_lib_type STREQUAL "STATIC_LIBRARY") + # We were able to figure out the mystery library is static! + set(JSONCPP_IMPORTED_LIBRARY_STATIC jsoncpp_lib CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY jsoncpp_lib CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY_IS_SHARED FALSE CACHE INTERNAL "" FORCE) + + elseif(__jsoncpp_have_jsoncpplib AND __jsoncpp_lib_type STREQUAL "SHARED_LIBRARY") + # We were able to figure out the mystery library is shared! + set(JSONCPP_IMPORTED_LIBRARY_SHARED jsoncpp_lib CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY jsoncpp_lib CACHE INTERNAL "" FORCE) + set(JSONCPP_IMPORTED_LIBRARY_IS_SHARED TRUE CACHE INTERNAL "" FORCE) + + elseif(__jsoncpp_have_jsoncpplib) + # One variant, and we have no idea if this is just an old version or if + # this is shared based on the target name alone. Hmm. + set(JSONCPP_IMPORTED_LIBRARY jsoncpp_lib CACHE INTERNAL "" FORCE) + endif() + + # Now, we need include directories. Can't just limit this to old CMakes, since + # new CMakes might be used to build projects designed to support older ones. + if(__jsoncpp_have_jsoncpplib) + get_property(__jsoncpp_interface_include_dirs TARGET jsoncpp_lib PROPERTY INTERFACE_INCLUDE_DIRECTORIES) + if(__jsoncpp_interface_include_dirs) + set(JSONCPP_IMPORTED_INCLUDE_DIRS "${__jsoncpp_interface_include_dirs}" CACHE INTERNAL "" FORCE) + endif() + endif() + if(TARGET jsoncpp_lib_static AND NOT JSONCPP_IMPORTED_INCLUDE_DIRS) + get_property(__jsoncpp_interface_include_dirs TARGET jsoncpp_lib_static PROPERTY INTERFACE_INCLUDE_DIRECTORIES) + if(__jsoncpp_interface_include_dirs) + set(JSONCPP_IMPORTED_INCLUDE_DIRS "${__jsoncpp_interface_include_dirs}" CACHE INTERNAL "" FORCE) + endif() + endif() +endif() + +# As a convenience... +if(TARGET jsoncpp_lib_static AND NOT TARGET jsoncpp_lib) + add_library(jsoncpp_lib INTERFACE) + target_link_libraries(jsoncpp_lib INTERFACE jsoncpp_lib_static) +endif() + +if(JSONCPP_IMPORTED_LIBRARY) + if(NOT JSONCPP_IMPORTED_INCLUDE_DIRS) + # OK, so we couldn't get it from the target... maybe we can figure it out from jsoncpp_DIR. + + # take off the jsoncpp component + get_filename_component(__jsoncpp_import_root "${jsoncpp_DIR}/.." ABSOLUTE) + set(__jsoncpp_hints "${__jsoncpp_import_root}") + # take off the cmake component + get_filename_component(__jsoncpp_import_root "${__jsoncpp_import_root}/.." ABSOLUTE) + list(APPEND __jsoncpp_hints "${__jsoncpp_import_root}") + # take off the lib component + get_filename_component(__jsoncpp_import_root "${__jsoncpp_import_root}/.." ABSOLUTE) + list(APPEND __jsoncpp_hints "${__jsoncpp_import_root}") + # take off one more component in case of multiarch lib + get_filename_component(__jsoncpp_import_root "${__jsoncpp_import_root}/.." ABSOLUTE) + list(APPEND __jsoncpp_hints "${__jsoncpp_import_root}") + + # Now, search. + find_path(JsonCpp_INCLUDE_DIR + NAMES + json/json.h + PATH_SUFFIXES include jsoncpp include/jsoncpp + HINTS ${__jsoncpp_hints}) + if(JsonCpp_INCLUDE_DIR) + mark_as_advanced(JsonCpp_INCLUDE_DIR) + # Note - this does not set it in the cache, in case we find it better at some point in the future! + set(JSONCPP_IMPORTED_INCLUDE_DIRS ${JsonCpp_INCLUDE_DIR}) + endif() + endif() + + find_package_handle_standard_args(JsonCpp + DEFAULT_MSG + jsoncpp_DIR + JSONCPP_IMPORTED_LIBRARY + JSONCPP_IMPORTED_INCLUDE_DIRS) +endif() + +if(JSONCPP_FOUND) + # Create any missing namespaced targets from the config module. + if(__jsoncpp_have_namespaced_targets) + if(JSONCPP_IMPORTED_LIBRARY AND NOT TARGET JsonCpp::JsonCpp) + add_library(JsonCpp::JsonCpp INTERFACE IMPORTED) + set_target_properties(JsonCpp::JsonCpp PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${JSONCPP_IMPORTED_INCLUDE_DIRS}" + INTERFACE_LINK_LIBRARIES "${JSONCPP_IMPORTED_LIBRARY}") + endif() + + if(JSONCPP_IMPORTED_LIBRARY_SHARED AND NOT TARGET JsonCpp::JsonCppShared) + add_library(JsonCpp::JsonCppShared INTERFACE IMPORTED) + set_target_properties(JsonCpp::JsonCppShared PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${JSONCPP_IMPORTED_INCLUDE_DIRS}" + INTERFACE_LINK_LIBRARIES "${JSONCPP_IMPORTED_LIBRARY_SHARED}") + endif() + + if(JSONCPP_IMPORTED_LIBRARY_STATIC AND NOT TARGET JsonCpp::JsonCppStatic) + add_library(JsonCpp::JsonCppStatic INTERFACE IMPORTED) + set_target_properties(JsonCpp::JsonCppStatic PROPERTIES + INTERFACE_INCLUDE_DIRECTORIES "${JSONCPP_IMPORTED_INCLUDE_DIRS}" + INTERFACE_LINK_LIBRARIES "${JSONCPP_IMPORTED_LIBRARY_STATIC}") + endif() + + # Hide the stuff we didn't, and no longer, need. + if(NOT JsonCpp_LIBRARY) + unset(JsonCpp_LIBRARY CACHE) + endif() + if(NOT JsonCpp_INCLUDE_DIR) + unset(JsonCpp_INCLUDE_DIR CACHE) + endif() + endif() + + set(JSONCPP_LIBRARY ${JSONCPP_IMPORTED_LIBRARY}) + set(JSONCPP_INCLUDE_DIRS ${JSONCPP_IMPORTED_INCLUDE_DIRS}) + if(DEFINED JSONCPP_IMPORTED_LIBRARY_IS_SHARED) + set(JSONCPP_LIBRARY_IS_SHARED ${JSONCPP_IMPORTED_LIBRARY_IS_SHARED}) + else() + unset(JSONCPP_LIBRARY_IS_SHARED) + endif() + + if(JSONCPP_IMPORTED_LIBRARY_SHARED) + set(JSONCPP_LIBRARY_SHARED ${JSONCPP_IMPORTED_LIBRARY_SHARED}) + endif() + + if(JSONCPP_IMPORTED_LIBRARY_STATIC) + set(JSONCPP_LIBRARY_STATIC ${JSONCPP_IMPORTED_LIBRARY_STATIC}) + endif() +endif() + +# Still nothing after looking for the config file: must go "old-school" +if(NOT JSONCPP_FOUND) + # Invoke pkgconfig for hints + find_package(PkgConfig QUIET) + set(_JSONCPP_INCLUDE_HINTS) + set(_JSONCPP_LIB_HINTS) + if(PKG_CONFIG_FOUND) + pkg_search_module(_JSONCPP_PC QUIET jsoncpp) + if(_JSONCPP_PC_INCLUDE_DIRS) + set(_JSONCPP_INCLUDE_HINTS ${_JSONCPP_PC_INCLUDE_DIRS}) + endif() + if(_JSONCPP_PC_LIBRARY_DIRS) + set(_JSONCPP_LIB_HINTS ${_JSONCPP_PC_LIBRARY_DIRS}) + endif() + if(_JSONCPP_PC_LIBRARIES) + set(_JSONCPP_LIB_NAMES ${_JSONCPP_PC_LIBRARIES}) + endif() + endif() + + if(NOT _JSONCPP_LIB_NAMES) + # OK, if pkg-config wasn't able to give us a library name suggestion, then we may + # have to resort to some intense old logic. + set(_JSONCPP_LIB_NAMES jsoncpp) + set(_JSONCPP_PATHSUFFIXES) + + if(CMAKE_SYSTEM_NAME STREQUAL "Linux") + list(APPEND _JSONCPP_PATHSUFFIXES + linux-gcc) # bit of a generalization but close... + endif() + if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_SYSTEM_NAME STREQUAL "Linux") + list(APPEND + _JSONCPP_LIB_NAMES + json_linux-gcc-${CMAKE_CXX_COMPILER_VERSION}_libmt + json_linux-gcc_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES + linux-gcc-${CMAKE_CXX_COMPILER_VERSION}) + + elseif(MSVC) + if(MSVC_VERSION EQUAL 1200) + list(APPEND _JSONCPP_LIB_NAMES json_vc6_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES msvc6) + elseif(MSVC_VERSION EQUAL 1300) + list(APPEND _JSONCPP_LIB_NAMES json_vc7_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES msvc7) + elseif(MSVC_VERSION EQUAL 1310) + list(APPEND _JSONCPP_LIB_NAMES json_vc71_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES msvc71) + elseif(MSVC_VERSION EQUAL 1400) + list(APPEND _JSONCPP_LIB_NAMES json_vc8_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES msvc80) + elseif(MSVC_VERSION EQUAL 1500) + list(APPEND _JSONCPP_LIB_NAMES json_vc9_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES msvc90) + elseif(MSVC_VERSION EQUAL 1600) + list(APPEND _JSONCPP_LIB_NAMES json_vc10_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES msvc10 msvc100) + endif() + + elseif(MINGW) + list(APPEND _JSONCPP_LIB_NAMES + json_mingw_libmt) + list(APPEND _JSONCPP_PATHSUFFIXES mingw) + + else() + list(APPEND _JSONCPP_LIB_NAMES + json_suncc_libmt + json_vacpp_libmt) + endif() + endif() # end of old logic + + # Actually go looking. + find_path(JsonCpp_INCLUDE_DIR + NAMES + json/json.h + PATH_SUFFIXES jsoncpp + HINTS ${_JSONCPP_INCLUDE_HINTS}) + find_library(JsonCpp_LIBRARY + NAMES + ${_JSONCPP_LIB_NAMES} + PATHS libs + PATH_SUFFIXES ${_JSONCPP_PATHSUFFIXES} + HINTS ${_JSONCPP_LIB_HINTS}) + + find_package_handle_standard_args(JsonCpp + DEFAULT_MSG + JsonCpp_INCLUDE_DIR + JsonCpp_LIBRARY) + + if(JSONCPP_FOUND) + # We already know that the target doesn't exist, let's make it. + # TODO don't know why we get errors like: + # error: 'JsonCpp::JsonCpp-NOTFOUND', needed by 'bin/osvr_json_to_c', missing and no known rule to make it + # when we do the imported target commented out below. So, instead, we make an interface + # target with an alias. Hmm. + + #add_library(JsonCpp::JsonCpp UNKNOWN IMPORTED) + #set_target_properties(JsonCpp::JsonCpp PROPERTIES + # IMPORTED_LOCATION "${JsonCpp_LIBRARY}" + # INTERFACE_INCLUDE_DIRECTORIES "${JsonCpp_INCLUDE_DIR}" + # IMPORTED_LINK_INTERFACE_LANGUAGES "CXX") + + set(JSONCPP_LIBRARY "${JsonCpp_LIBRARY}") + set(JSONCPP_INCLUDE_DIRS "${JsonCpp_INCLUDE_DIR}") + unset(JSONCPP_LIBRARY_IS_SHARED) + + if(__jsoncpp_have_interface_support AND NOT TARGET jsoncpp_interface) + add_library(jsoncpp_interface INTERFACE) + set_target_properties(jsoncpp_interface PROPERTIES + INTERFACE_LINK_LIBRARIES "${JsonCpp_LIBRARY}" + INTERFACE_INCLUDE_DIRECTORIES "${JsonCpp_INCLUDE_DIR}") + endif() + if(__jsoncpp_have_namespaced_targets) + if(NOT TARGET JsonCpp::JsonCpp) + add_library(JsonCpp::JsonCpp ALIAS jsoncpp_interface) + endif() + endif() + endif() +endif() + +if(JSONCPP_FOUND) + mark_as_advanced(jsoncpp_DIR JsonCpp_INCLUDE_DIR JsonCpp_LIBRARY) +endif() \ No newline at end of file