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#
# Copyright 2009- ECMWF.
#
# This software is licensed under the terms of the Apache Licence version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
# In applying this licence, ECMWF does not waive the privileges and immunities
# granted to it by virtue of its status as an intergovernmental organisation
# nor does it submit to any jurisdiction.
#
# FindJson
# ----------
#
#
# Find JSON library include dirs
#
# Use this module by invoking find_package with the form:
#
# find_package(Json
# [REQUIRED] # Fail with error if library is not found
# )
#
# This module finds headers and libraries, specifying the following variables:
#
# JSON_FOUND - True if library is found
# JSON_INCLUDE_DIRS - Include directories to be used
#
# The following `IMPORTED` targets are also defined:
#
# nlohmann::json - Generic target for the library
#
#
if (NOT DEFINED JSON_DIR)
message(FATAL_ERROR "Unable to find JSON. Please provide JSON_DIR property.")
endif ()
#
# -----------------------------------------------------------------------------
# Search for include DIRs
# -----------------------------------------------------------------------------
find_path(JSON_INCLUDE_DIRS
NAMES nlohmann/json.hpp
PATHS ${JSON_DIR}/include)
#
# -----------------------------------------------------------------------------
# Handle find_package() REQUIRED and QUIET parameters
# -----------------------------------------------------------------------------
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Json
REQUIRED_VARS
JSON_INCLUDE_DIRS)
#
# -----------------------------------------------------------------------------
# Define library as exported targets
# -----------------------------------------------------------------------------
set(NAME "nlohmann_json")
add_library(${NAME} INTERFACE IMPORTED GLOBAL)
set_target_properties(${NAME}
PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${JSON_INCLUDE_DIRS}")
add_library(nlohmann::json ALIAS nlohmann_json)
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