Prepare sectorbuilder for extraction

.gitmodules

@@ -2,5 +2,5 @@
 	path = lib/bls-signatures/bls-signatures
 	url = https://github.com/filecoin-project/bls-signatures.git
 [submodule "lib/sectorbuilder/rust-builder"]
-	path = lib/rust-fil-sector-builder
+	path = lib/sectorbuilder/rust-fil-sector-builder
 	url = https://github.com/filecoin-project/rust-fil-sector-builder

Makefile

@@ -10,7 +10,7 @@ sectorbuilder: lib/sectorbuilder/include/sector_builder_ffi.h
 lib/sectorbuilder/include/sector_builder_ffi.h: lib/rust-fil-sector-builder ;
 	./scripts/install-sectorbuilder.sh
 
-deps: blssigs sectorbuilder
+deps: blssigs
 
 build: deps
 	go build -o lotus ./cmd/lotus

lib/sectorbuilder/binding/cgo_bindings.go

@@ -1,6 +1,6 @@
 // +build !windows
 
-package libsectorbuilder
+package sectorbuilder
 
 import (
 	"time"

lib/sectorbuilder/binding/cgo_transforms.go

@@ -1,4 +1,4 @@
-package libsectorbuilder
+package sectorbuilder
 
 import (
 	"unsafe"

lib/sectorbuilder/build.sh

@@ -2,9 +2,10 @@
 
 set -Eeo pipefail
 
-source "$(dirname "${BASH_SOURCE[0]}")/install-shared.bash"
+cd "$(dirname "${BASH_SOURCE[0]}")"
+source "install-shared.bash"
 
-subm_dir="lib/rust-fil-sector-builder"
+subm_dir="rust-fil-sector-builder"
 
 git submodule update --init --recursive $subm_dir
 
@@ -12,16 +13,16 @@ if download_release_tarball tarball_path "${subm_dir}"; then
     tmp_dir=$(mktemp -d)
     tar -C $tmp_dir -xzf $tarball_path
 
-    cp -R "${tmp_dir}/include" lib/sectorbuilder
-    cp -R "${tmp_dir}/lib" lib/sectorbuilder
+    cp -R "${tmp_dir}/include" .
+    cp -R "${tmp_dir}/lib" .
 else
     echo "failed to find or obtain precompiled assets for ${subm_dir}, falling back to local build"
     build_from_source "${subm_dir}"
 
-    mkdir -p lib/sectorbuilder/include
-    mkdir -p lib/sectorbuilder/lib/pkgconfig
+    mkdir -p include
+    mkdir -p lib/pkgconfig
 
-    find "${subm_dir}" -type f -name sector_builder_ffi.h -exec mv -- "{}" ./lib/sectorbuilder/include/ \;
-    find "${subm_dir}" -type f -name libsector_builder_ffi.a -exec cp -- "{}" ./lib/sectorbuilder/lib/ \;
-    find "${subm_dir}" -type f -name sector_builder_ffi.pc -exec cp -- "{}" ./lib/sectorbuilder/pkgconfig/ \;
+    find "${subm_dir}" -type f -name sector_builder_ffi.h -exec mv -- "{}" include/ \;
+    find "${subm_dir}" -type f -name libsector_builder_ffi.a -exec cp -- "{}" lib/ \;
+    find "${subm_dir}" -type f -name sector_builder_ffi.pc -exec cp -- "{}" pkgconfig/ \;
 fi

lib/sectorbuilder/install-shared.bash

@@ -0,0 +1,78 @@
+#!/usr/bin/env bash
+
+download_release_tarball() {
+    __resultvar=$1
+    __submodule_path=$2
+    __repo_name=$(echo $2 | cut -d '/' -f 1)
+    __release_name="${__repo_name}-$(uname)"
+    __release_sha1=$(git rev-parse @:"${__submodule_path}")
+    __release_tag="${__release_sha1:0:16}"
+    __release_tag_url="https://api.github.com/repos/filecoin-project/${__repo_name}/releases/tags/${__release_tag}"
+
+    echo "acquiring release @ ${__release_tag}"
+
+    __release_response=$(curl \
+        --retry 3 \
+        --location $__release_tag_url)
+
+    __release_url=$(echo $__release_response | jq -r ".assets[] | select(.name | contains(\"${__release_name}\")) | .url")
+
+    if [[ -z "$__release_url" ]]; then
+        (>&2 echo "failed to download release (tag URL: ${__release_tag_url}, response: ${__release_response})")
+        return 1
+    fi
+
+    __tar_path="/tmp/${__release_name}_$(basename ${__release_url}).tar.gz"
+
+    if [[ ! -f "${__tar_path}" ]]; then
+        __asset_url=$(curl \
+            --head \
+            --retry 3 \
+            --header "Accept:application/octet-stream" \
+            --location \
+            --output /dev/null \
+            -w %{url_effective} \
+            "$__release_url")
+
+        curl --retry 3 --output "${__tar_path}" "$__asset_url"
+        if [[ $? -ne "0" ]]; then
+            (>&2 echo "failed to download release asset (tag URL: ${__release_tag_url}, asset URL: ${__asset_url})")
+            return 1
+        fi
+    fi
+
+    eval $__resultvar="'$__tar_path'"
+}
+
+build_from_source() {
+    __submodule_path=$1
+    __submodule_sha1=$(git rev-parse @:"${__submodule_path}")
+    __submodule_sha1_truncated="${__submodule_sha1:0:16}"
+
+    echo "building from source @ ${__submodule_sha1_truncated}"
+
+    if ! [ -x "$(command -v cargo)" ]; then
+        (>&2 echo 'Error: cargo is not installed.')
+        (>&2 echo 'Install Rust toolchain to resolve this problem.')
+        exit 1
+    fi
+
+    if ! [ -x "$(command -v rustup)" ]; then
+        (>&2 echo 'Error: rustup is not installed.')
+        (>&2 echo 'Install Rust toolchain installer to resolve this problem.')
+        exit 1
+    fi
+
+    pushd $__submodule_path
+
+    cargo --version
+    cargo update
+
+    if [[ -f "./scripts/build-release.sh" ]]; then
+        ./scripts/build-release.sh $(cat rust-toolchain)
+    else
+        cargo build --release --all
+    fi
+
+    popd
+}