#/

# @license Apache-2.0

#

# Copyright (c) 2017 The Stdlib Authors.

#

# 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.

#/

# VARIABLES #

# Define the path to an executable for checking CMake:

DEPS_CHECK_CMAKE ?= $(TOOLS_DIR)/scripts/check_cmake

# Define the path to an executable for checking git:

DEPS_CHECK_GIT ?= $(TOOLS_DIR)/scripts/check_git

# Define the path to an executable for checking Python:

DEPS_CHECK_PYTHON ?= $(TOOLS_DIR)/scripts/check_python

# Define the download URL:

DEPS_EMSDK_URL ?= https://github.com/emscripten-core/emsdk.git

# Determine the basename for the download:

deps_emsdk_basename := emsdk

# Define the path to the file containing a checksum to verify a download:

DEPS_EMSDK_CHECKSUM ?= $(shell $(CAT) $(DEPS_CHECKSUMS_DIR)/$(subst .,_,$(deps_emsdk_basename))/sha256)

# Define the output path when downloading:

DEPS_EMSDK_DOWNLOAD_OUT ?= $(DEPS_TMP_DIR)/$(deps_emsdk_basename)

# Define the output path after extracting:

deps_emsdk_extract_out := $(DEPS_BUILD_DIR)/emsdk_extracted

# Define the path to the directory containing tests:

DEPS_EMSDK_TEST_DIR ?= $(DEPS_DIR)/test/emsdk

# Define the output directory path for compiled tests:

DEPS_EMSDK_TEST_OUT ?= $(DEPS_EMSDK_TEST_DIR)/build

# Define the path to a test file for checking an installation:

DEPS_EMSDK_TEST_INSTALL ?= $(DEPS_EMSDK_TEST_DIR)/test_install.c

# Define output paths for a compiled test file:

DEPS_EMSDK_TEST_INSTALL_WASM_OUT ?= $(DEPS_EMSDK_TEST_OUT)/test.wasm

# Define the path to the `emcc` compiler:

EMCC ?= $(DEPS_EMSDK_EMSCRIPTEN_EMCC)

# RULES #

#/

# Downloads the Emscripten SDK.

#

# @private

#/

$(DEPS_EMSDK_DOWNLOAD_OUT): | $(DEPS_TMP_DIR)

$(QUIET) echo 'Downloading Emscripten SDK...' >&2

$(QUIET) $(GIT) clone $(DEPS_EMSDK_URL) $(DEPS_EMSDK_DOWNLOAD_OUT)

#/

# Extracts an Emscripten SDK download.

#

# @private

#/

$(DEPS_EMSDK_BUILD_OUT): | $(DEPS_BUILD_DIR) $(DEPS_EMSDK_DOWNLOAD_OUT)

$(QUIET) echo 'Extracting Emscripten SDK...' >&2

$(QUIET) $(CP) -a $(DEPS_EMSDK_DOWNLOAD_OUT) $(deps_emsdk_extract_out)

$(QUIET) mv $(deps_emsdk_extract_out) $(DEPS_EMSDK_BUILD_OUT)

#/

# Creates a directory for storing compiled Emscripten SDK tests.

#

# @private

#/

$(DEPS_EMSDK_TEST_OUT):

$(QUIET) $(MKDIR_RECURSIVE) $(DEPS_EMSDK_TEST_OUT)

#/

# Compiles a WebAssembly test file for testing an Emscripten SDK installation.

#

# @private

#/

$(DEPS_EMSDK_TEST_INSTALL_WASM_OUT): $(DEPS_EMSDK_BUILD_OUT) $(DEPS_EMSDK_TEST_OUT)

$(QUIET) $(EMCC) $(DEPS_EMSDK_TEST_INSTALL) \

-s WASM=1 \

-o $(DEPS_EMSDK_TEST_INSTALL_WASM_OUT)

#/

# Downloads the Emscripten SDK.

#

# @private

#

# @example

# make deps-download-emsdk

#/

deps-download-emsdk: $(DEPS_EMSDK_DOWNLOAD_OUT)

.PHONY: deps-download-emsdk

#/

# Verifies an Emscripten SDK download.

#

# @private

#

# @example

# make deps-verify-emsdk

#/

deps-verify-emsdk: deps-download-emsdk

$(QUIET) echo 'Verifying download...' >&2

$(QUIET) echo 'Nothing to verify.' >&2

.PHONY: deps-verify-emsdk

#/

# Extracts an Emscripten SDK download.

#

# @private

#

# @example

# make deps-extract-emsdk

#/

deps-extract-emsdk: $(DEPS_EMSDK_BUILD_OUT)

.PHONY: deps-extract-emsdk

#/

# Checks a host system for Emscripten SDK installation prerequisites.

#

# @private

#

# @example

# make deps-prerequisites-emsdk

#/

deps-prerequisites-emsdk:

$(QUIET) $(DEPS_CHECK_CMAKE)

$(QUIET) $(DEPS_CHECK_GIT)

$(QUIET) $(DEPS_CHECK_PYTHON)

.PHONY: deps-prerequisites-emsdk

#/

# Installs the Emscripten SDK.

#

# @private

#

# @example

# make deps-install-emsdk

#/

deps-install-emsdk: $(DEPS_EMSDK_BUILD_OUT) deps-prerequisites-emsdk

$(QUIET) cd $(DEPS_EMSDK_BUILD_OUT) && $(GIT) pull

$(QUIET) $(DEPS_EMSDK_BUILD_OUT)/emsdk install $(DEPS_EMSDK_VERSION)

$(QUIET) $(DEPS_EMSDK_BUILD_OUT)/emsdk activate $(DEPS_EMSDK_VERSION)

.PHONY: deps-install-emsdk

#/

# Updates an installed Emscripten SDK.

#

# @private

#

# @example

# make deps-update-emsdk

#/

deps-update-emsdk: deps-install-emsdk deps-test-emsdk

.PHONY: deps-update-emsdk

#

# Tests an Emscripten SDK installation.

#

# @private

#

# @example

# make deps-test-emsdk

#/

deps-test-emsdk: $(DEPS_EMSDK_TEST_INSTALL_WASM_OUT) deps-test-emsdk-wasm

$(QUIET) echo '' >&2

$(QUIET) echo 'emcc info...' >&2

$(QUIET) echo '' >&2

$(QUIET) $(EMCC) -v >&2

$(QUIET) echo '' >&2

$(QUIET) echo 'Success.' >&2

.PHONY: deps-test-emsdk

#/

# Tests an Emscripten SDK installation for generating WebAssembly.

#

# @private

#

# @example

# make deps-test-emsdk-wasm

#/

deps-test-emsdk-wasm: $(DEPS_EMSDK_TEST_INSTALL_WASM_OUT)

$(QUIET) echo 'Running wasm tests...' >&2

$(QUIET) echo '' >&2

$(QUIET) echo 'TODO: make test more robust' >&2

$(QUIET) test -f $(DEPS_EMSDK_TEST_INSTALL_WASM_OUT) >&2

$(QUIET) echo '' >&2

$(QUIET) echo 'Success.' >&2

.PHONY: deps-test-emsdk-wasm

#/

# Installs the Emscripten SDK.

#

# @example

# make install-deps-emsdk

#/

install-deps-emsdk: deps-download-emsdk deps-verify-emsdk deps-extract-emsdk deps-install-emsdk deps-test-emsdk

.PHONY: install-deps-emsdk

#/

# Removes an Emscripten SDK installation (but does not remove an Emscripten SDK download if one exists).

#

# @example

# make clean-deps-emsdk

#/

clean-deps-emsdk: clean-deps-emsdk-tests

$(QUIET) $(DELETE) $(DELETE_FLAGS) $(DEPS_EMSDK_BUILD_OUT)

.PHONY: clean-deps-emsdk

#/

# Removes Emscripten SDK installation tests.

#

# @example

# make clean-deps-emsdk-tests

#/

clean-deps-emsdk-tests:

$(QUIET) $(DELETE) $(DELETE_FLAGS) $(DEPS_EMSDK_TEST_OUT)

.PHONY: clean-deps-emsdk-tests