# Copyright (c) Facebook, Inc. and its affiliates.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
include_guard(GLOBAL)

set(VELOX_FASTFLOAT_VERSION v8.0.2)
set(
  VELOX_FASTFLOAT_BUILD_SHA256_CHECKSUM
  e14a33089712b681d74d94e2a11362643bd7d769ae8f7e7caefe955f57f7eacd
)
set(
  VELOX_FASTFLOAT_SOURCE_URL
  "https://github.com/fastfloat/fast_float/archive/refs/tags/${VELOX_FASTFLOAT_VERSION}.tar.gz"
)

velox_resolve_dependency_url(FASTFLOAT)

message(STATUS "Building fast_float from source")
FetchContent_Declare(
  fastfloat
  URL ${VELOX_FASTFLOAT_SOURCE_URL}
  URL_HASH ${VELOX_FASTFLOAT_BUILD_SHA256_CHECKSUM}
)
set(fastfloat_BUILD_TESTS OFF)
FetchContent_MakeAvailable(fastfloat)
# If folly is bundled it uses find_path fast_float/fast_float.h to locate the
# header. But when made availabe through FetchContent it does not find it.
# Instead, we need to explicitly point it to the location to search for it. This
# caches the FASTFLOAT_INCLUDE_DIR variable so when folly re-runs find_path it
# will already have located the bundled header.
FetchContent_GetProperties(fastfloat SOURCE_DIR FASTFLOAT_SOURCE_DIR)
find_path(
  FASTFLOAT_INCLUDE_DIR
  NAMES fast_float/fast_float.h
  PATHS ${FASTFLOAT_SOURCE_DIR}
  PATH_SUFFIXES include
)