[oxigraph_server] Add Oxigraph RDF DB

O/oxigraph/build_tarballs.jl

@@ -0,0 +1,40 @@
+# Note that this script can accept some limited command-line arguments, run
+# `julia build_tarballs.jl --help` to see a usage message.
+using BinaryBuilder, Pkg
+
+name = "oxigraph"
+version = v"0.2.5"
+
+# Collection of sources required to complete build
+sources = [
+    GitSource("https://github.com/oxigraph/oxigraph.git", "a21dcbb4f7355d7a00a86fbc5ad2c350a53629c4"),
+    DirectorySource("./bundled"),
+]
+
+# Bash recipe for building across all platforms
+script = raw"""
+cd $WORKSPACE/srcdir/oxigraph/lib
+
+cargo build --release -j${nproc}
+
+install_license $WORKSPACE/srcdir/oxigraph/LICENSE-MIT
+"""
+
+# These are the platforms we will build for by default, unless further
+# platforms are passed in on the command line
+platforms = supported_platforms(; experimental=true)
+
+# Rust toolchain for i686 Windows is unusable
+filter!(p -> !Sys.iswindows(p) || arch(p) != "i686", platforms)
+
+# The products that we will ensure are always built
+products = Product[
+]
+
+# Dependencies that must be installed before this package can be built
+dependencies = Dependency[
+]
+
+# Build the tarballs, and possibly a `build.jl` as well.
+build_tarballs(ARGS, name, version, sources, script, platforms, products, dependencies;
+                compilers=[:c, :rust], preferred_gcc_version=v"7", lock_microarchitecture=false, julia_compat="1.6")

O/oxigraph/bundled/config.toml

@@ -0,0 +1,2 @@
+[target.x86_64-unknown-linux-musl]
+rustflags = ["-C", "linker-flavor=ld.lld"]

O/oxigraph/bundled/patches/memchr_patch.patch

@@ -0,0 +1,12 @@
+diff --git a/lib/Cargo.toml b/lib/Cargo.toml
+index e174425..972c88f 100644
+--- a/lib/Cargo.toml
++++ b/lib/Cargo.toml
+@@ -24,6 +24,7 @@ http_client = ["httparse", "native-tls"]
+ [dependencies]
+ rocksdb = { version = "0.16", optional = true }
+ sled = { version = "0.34", optional = true }
++memchr = { version = "2", default-features = false }
+ quick-xml = "0.22"
+ rand = "0.8"
+ md-5 = "0.9"