From 5d9730de3f3cbf16685ec13eb4c6e4afd3d1b805 Mon Sep 17 00:00:00 2001
From: Miles <miles59923@gmail.com>
Date: Sat, 27 Apr 2024 16:45:52 +0200
Subject: [PATCH] Add blosc2 to CLI, libcramjam features and own CI (#156)

* Add each codec as a feature to libcramjam and remove experimental feature from python crates

* Add libcramjam specific CI

* Add blosc2 to cramjam-cli
---
 .cargo/config                               |   12 +
 .github/workflows/CI-libcramjam.yml         |   72 ++
 .github/workflows/{CI.yml => CI-python.yml} |  113 +-
 .gitignore                                  |    2 +
 Cargo.lock                                  | 1289 -------------------
 cramjam-cli/Cargo.toml                      |   12 +-
 cramjam-cli/src/main.rs                     |    5 +
 cramjam-cli/tests/test_cli.py               |   11 +-
 cramjam-python/Cargo.toml                   |   10 +-
 cramjam-python/README.md                    |    3 +-
 cramjam-python/src/lib.rs                   |    5 -
 libcramjam/Cargo.toml                       |   50 +-
 libcramjam/src/capi.rs                      |  192 ++-
 libcramjam/src/lib.rs                       |   36 +-
 14 files changed, 382 insertions(+), 1430 deletions(-)
 create mode 100644 .github/workflows/CI-libcramjam.yml
 rename .github/workflows/{CI.yml => CI-python.yml} (83%)
 delete mode 100644 Cargo.lock

diff --git a/.cargo/config b/.cargo/config
index 146dc31d..57229ecf 100644
--- a/.cargo/config
+++ b/.cargo/config
@@ -4,5 +4,17 @@ rustflags = [
   "-C", "link-arg=dynamic_lookup",
 ]
 
+[target.x86_64-unknown-linux-musl]
+rustflags = ["-C", "link-arg=-lgcc"]
+
+[target.i686-unknown-linux-musl]
+rustflags = ["-C", "link-arg=-lgcc"]
+
+[target.armv7-unknown-linux-musleabihf]
+rustflags = ["-C", "link-arg=-lgcc"]
+
+[target.aarch64-unknown-linux-musl]
+rustflags = ["-C", "link-arg=-lgcc"]
+
 [net]
 git-fetch-with-cli = true
diff --git a/.github/workflows/CI-libcramjam.yml b/.github/workflows/CI-libcramjam.yml
new file mode 100644
index 00000000..b1ab1da6
--- /dev/null
+++ b/.github/workflows/CI-libcramjam.yml
@@ -0,0 +1,72 @@
+name: CI-libcramjam
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
+jobs:
+  build-test:
+    name: capi=${{ matrix.capi }}-codec=${{ matrix.codec || 'all' }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: ${{ !( startsWith(github.ref, 'refs/heads/master') || startsWith(github.ref, 'refs/tags/') ) }}
+      matrix:
+        capi:
+          - true
+          - false
+        codec:
+          - zstd
+          - blosc2
+          - gzip
+          - brotli
+          - lz4
+          - xz
+          - deflate
+          - bzip2
+          - null  # Use all codecs
+
+        # TODO: codecs not implemented in capi feature
+        exclude:
+          - capi: true
+            codec: blosc2
+          - capi: true
+            codec: xz
+          - capi: true
+            codec: deflate
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - uses: Swatinem/rust-cache@v2
+        name: Rust Cache
+
+      - name: Audit
+        if: |
+          !matrix.codec && matrix.capi
+        run: cargo install cargo-audit && cargo audit
+
+      - name: Test capi and single codec
+        if: matrix.capi && matrix.codec
+        run: cargo test -p libcramjam --no-default-features --features ${{ matrix.codec }} --features capi --lib
+
+      - name: Test capi and all codecs
+        if: matrix.capi && !matrix.codec
+        run: cargo test -p libcramjam --features capi --lib
+
+      - name: Test no capi and all codecs
+        if: |
+          !matrix.capi && !matrix.codec
+        run: cargo test -p libcramjam --lib
+
+      - name: Test no capi and single codec
+        if: |
+          !matrix.capi && matrix.codec
+        run: cargo test -p libcramjam --lib --no-default-features --features ${{ matrix.codec }}
diff --git a/.github/workflows/CI.yml b/.github/workflows/CI-python.yml
similarity index 83%
rename from .github/workflows/CI.yml
rename to .github/workflows/CI-python.yml
index 48536619..dbf2bfce 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI-python.yml
@@ -1,4 +1,4 @@
-name: CI
+name: CI-python
 
 on:
   push:
@@ -11,12 +11,16 @@ on:
       - released
       - prereleased
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number || github.sha }}
+  cancel-in-progress: true
+
 jobs:
   build-test:
     runs-on: ${{ matrix.conf.os }}
     name: ${{ matrix.conf.os }}-${{ matrix.conf.target }}-${{ matrix.package.name }}-${{ matrix.python-version }}-${{ matrix.conf.python-architecture }}-${{ matrix.conf.manylinux }}
     strategy:
-      fail-fast: ${{ !( startsWith(github.ref, 'refs/heads/master') || startsWith(github.ref, 'refs/tags/') ) }}
+      fail-fast: ${{ !( startsWith(github.ref, 'refs/heads/master') || !startsWith(github.ref, 'refs/tags/') ) }}
       matrix:
         python-version: 
           - '3.8' 
@@ -136,7 +140,7 @@ jobs:
             package: { name: cramjam-cli, dir: cramjam-cli }
           
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
@@ -147,11 +151,6 @@ jobs:
         with:
           target: ${{ matrix.conf.target-triple }}
 
-      - uses: Swatinem/rust-cache@v2
-        name: Rust Cache
-        with:
-          prefix-key: ${{ matrix.conf.os }}-${{ matrix.conf.manylinux }}-${{ matrix.conf.target-triple }}-${{ matrix.conf.python-architecture }}-${{ matrix.package.name }}
-
       - name: Setup (Mac)
         if: runner.os == 'macOS'
         run: |
@@ -161,14 +160,8 @@ jobs:
           rustup target add x86_64-apple-darwin
 
           echo "MACOSX_DEPLOYMENT_TARGET=10.12" >> $GITHUB_ENV
-
-          # blosc2-rs has a difficult time compiling on x86_64 mac w/ missing symbol __cpu_model.
-          # and python less than 3.10 is not available on macos-14 M1. So we'll grab the already compiled one
-          # Download blosc2 2.14.3 pre-built lib
-          wget https://files.pythonhosted.org/packages/64/98/6f0e0e66f395c5123c74c7acc4626622e34fa1ddf2b45f0684d7a9c81bee/blosc2-2.6.2-cp312-cp312-macosx_10_9_x86_64.whl -O blosc2.whl
-          unzip blosc2.whl
-          echo "BLOSC2_INSTALL_PREFIX=$(pwd)/blosc2-2.6.2.data/data" >> $GITHUB_ENV
-          echo "DYLD_FALLBACK_LIBRARY_PATH=$(pwd)/blosc2-2.6.2.data/data/lib64:$(pwd)/blosc2-2.6.2.data/data/lib" >> $GITHUB_ENV
+          echo "BLOSC2_INSTALL_PREFIX=$(pwd)/blosc2" >> $GITHUB_ENV
+          echo "DYLD_FALLBACK_LIBRARY_PATH=$(pwd)/blosc2/lib64:$(pwd)/blosc2/lib" >> $GITHUB_ENV
 
       - name: Setup (Windows)
         if: runner.os == 'Windows'
@@ -189,9 +182,6 @@ jobs:
           $Env:LIB += ";$Env:BLOSC2_INSTALL_PREFIX\lib;$Env:BLOSC2_INSTALL_PREFIX\lib64;$Env:BLOSC2_INSTALL_PREFIX\bin"
           echo "LIB=$Env:LIB" | Out-File -FilePath $Env:GITHUB_ENV -Encoding utf8 -Append
 
-          # Now just build blosc2-sys to ensure caching doesn't get in the way and sanity purposes
-          cargo build --release --target ${{ matrix.conf.target-triple }} --package blosc2-sys --target-dir build -vv
-
       - name: Setup (Linux)
         if: runner.os == 'Linux'
         env: 
@@ -209,20 +199,14 @@ jobs:
           # so we'll just use 'cross' to build and pass it in for the action for all archs
           # nothing special for the revision pin, just deterministic install
           cargo install cross --git https://github.com/cross-rs/cross --rev 6d097fb
-          cross build --release --target $TARGET_TRIPLE --package blosc2-sys --target-dir build
+          cross build --release --target $TARGET_TRIPLE --package blosc2-sys --target-dir build --manifest-path ${{ matrix.package.dir }}/Cargo.toml
           blosc2_sys_dir=$(ls build/$TARGET_TRIPLE/release/build/ | grep blosc2-sys)
           mv $WORKSPACE/build/$TARGET_TRIPLE/release/build/$blosc2_sys_dir/out $BLOSC2_INSTALL_PREFIX
           tree -L 2 $BLOSC2_INSTALL_PREFIX
 
-      # Redundant to do audit and tests for all python versions 
-      - name: Audit
-        if: runner.os == 'Linux' && matrix.conf.target == 'x86_64' && matrix.python-version == '3.12'
-        run: cargo install cargo-audit && cargo audit
-
-      # Redundant to do audit and tests for all python versions 
       - name: Rust Tests
         if: matrix.conf.target == 'x86_64' && !startsWith(matrix.python-version, 'pypy') && matrix.python-version == '3.12'
-        run: cargo test --no-default-features --release --lib
+        run: cargo test -p ${{ matrix.package.dir }}
 
       - name: Build wheel (Linux)
         if: runner.os == 'Linux'
@@ -230,61 +214,48 @@ jobs:
         with:
           target: ${{ matrix.conf.target }}
           manylinux: ${{ matrix.conf.manylinux }}
-          docker-options: -e BLOSC2_INSTALL_PREFIX=${{ github.workspace }}/blosc2
-          args: -i ${{ matrix.python-version }} --release --out dist --manifest-path ${{ matrix.package.dir }}/Cargo.toml --features use-system-blosc2 --features blosc2-static
+          docker-options: -e BLOSC2_INSTALL_PREFIX=${{ github.workspace }}/blosc2 -e LD_LIBRARY_PATH=${{ github.workspace }}/blosc2/lib:${{ github.workspace }}/blosc2/lib64
+          args: -i ${{ matrix.python-version }} --release --out dist --manifest-path ${{ matrix.package.dir }}/Cargo.toml --features use-system-blosc2
           before-script-linux: ls -l $BLOSC2_INSTALL_PREFIX
 
       - name: Build wheel (Windows)
         if: runner.os == 'Windows'
+        shell: bash
         run: |
           python -m pip install maturin delvewheel
 
-          maturin build `
-            -i python `
-            --release `
-            --out wheels `
-            --target ${{ matrix.conf.target-triple }} `
-            --features blosc2-static `
-            --features blosc2-shared `
-            --features use-system-blosc2 `
+          maturin build \
+            -i python \
+            --release \
+            --out wheels \
+            --target ${{ matrix.conf.target-triple }} \
+            --no-default-features \
+            --features extension-module \
+            --features blosc2-static \
             --manifest-path ${{ matrix.package.dir }}/Cargo.toml
 
-          # Repair wheel
-          $file = Get-ChildItem -Path ".\wheels\" -Filter "*.whl" | Select-Object -First 1
-          if ($file -ne $null) {
-              & delvewheel repair -v $file.FullName -w dist
-          } else {
-              Write-Host "No .whl file found in the wheels directory."
-          }
-
-          # Remove location of blosc2 to ensure fixing wheel works
-          Remove-Item -Path $env:BLOSC2_INSTALL_PREFIX -Recurse -Force -ErrorAction SilentlyContinue
+          name=$(ls -1 wheels/ | head -n 1)
+          delvewheel repair -v wheels/$name -w dist
 
       - name: Build wheel (MacOS)
         if: runner.os == 'macOS'
-        run: |
-          python -m pip install maturin delocate
-
-          # TODO: probably remove this when cramjam-cli has blosc2 support and cramjam is released w/ blosc2
-          # so cramjam-cli can be tested against it.
-          if [ "${{ matrix.package.name }}" = "cramjam-cli" ]; then
-            export USE_BLOSC2=""
-          else
-            export USE_BLOSC2="--features use-system-blosc2"
-          fi
-
-          maturin build \
-            -i python \
-            --release \
-            --out dist \
-            --target ${{ matrix.conf.target-triple }} \
-            --manifest-path ${{ matrix.package.dir }}/Cargo.toml $USE_BLOSC2
+        uses: PyO3/maturin-action@v1
+        with:
+          target: ${{ matrix.conf.target-triple }}
+          # OSX complains with __cpu_model from blosc2 statically compiled so only enabled shared
+          args: -i python --release --out dist --manifest-path ${{ matrix.package.dir }}/Cargo.toml --no-default-features --features extension-module --features blosc2-shared
 
+      - name: Fix wheel (MacOS)
+        if: runner.os == 'macOS'
+        run: |
+          python -m pip install delocate
           delocate-wheel -v dist/*.whl
 
-          # Ensure wheel isn't linking to something we've built outside of it
+          # Remove pointers back to built lib location to ensure tests later don't link back
+          unset DYLD_FALLBACK_LIBRARY_PATH
+          unset BLOSC2_INSTALL_PREFIX
           rm -rf $BLOSC2_INSTALL_PREFIX
-
+    
       - name: Install built wheel and Test (Native)
         # TODO: I'm not sure but the actual collection of tests on windows using pypy3.10 takes forever and/or fails
         if: |
@@ -349,16 +320,18 @@ jobs:
             venv/bin/python -c 'import cramjam' || venv/bin/cramjam-cli --help
 
       - name: Upload wheels
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
+        if: ${{ ( startsWith(github.ref, 'refs/heads/master') || startsWith(github.ref, 'refs/tags/') ) }}
         with:
           name: dist
           path: dist
+          overwrite: true
 
   build-sdist:
     name: Build sdists
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
           python-version: 3.12
@@ -369,13 +342,14 @@ jobs:
       - name: Build sdist cramjam-cli
         run: python -m build --sdist cramjam-cli/ -o ./dist
       - name: Upload sdists
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: dist
           path: dist
 
   pypi-publish:
     name: Upload ${{ matrix.package }} release to PyPI
+    if: startsWith(github.ref, 'refs/tags/')
     strategy:
       fail-fast: false
       matrix:
@@ -383,7 +357,6 @@ jobs:
           - cramjam
           - cramjam-cli
     runs-on: ubuntu-latest
-    if: startsWith(github.ref, 'refs/tags/')
     needs: [build-test, build-sdist]
     environment:
       name: pypi
diff --git a/.gitignore b/.gitignore
index 7067b3ed..f5e37467 100644
--- a/.gitignore
+++ b/.gitignore
@@ -10,6 +10,8 @@ __pycache__/
 benchenv/
 cramjam-python/_build
 
+Cargo.lock
+
 
 # Distribution / packaging
 .Python
diff --git a/Cargo.lock b/Cargo.lock
deleted file mode 100644
index c017b476..00000000
--- a/Cargo.lock
+++ /dev/null
@@ -1,1289 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "adler"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
-
-[[package]]
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-checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
-dependencies = [
- "memchr",
-]
-
-[[package]]
-name = "alloc-no-stdlib"
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-checksum = "cc7bb162ec39d46ab1ca8c77bf72e890535becd1751bb45f64c597edb4c8c6b3"
-
-[[package]]
-name = "alloc-stdlib"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
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- "predicates",
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- "wait-timeout",
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-
-[[package]]
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-
-[[package]]
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-
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-
-[[package]]
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- "parking_lot",
-]
-
-[[package]]
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-source = "git+https://github.com/milesgranger/blosc2-rs.git#35ee5f6c77b137b473a1a9b46a0a782a359de016"
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-
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- "serde_json",
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- "toml",
-]
-
-[[package]]
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diff --git a/cramjam-cli/Cargo.toml b/cramjam-cli/Cargo.toml
index e490900f..64ab9d09 100644
--- a/cramjam-cli/Cargo.toml
+++ b/cramjam-cli/Cargo.toml
@@ -1,15 +1,15 @@
 [package]
 name = "cramjam-cli"
-version = "0.1.1"
+version = "0.2.0-rc1"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [features]
-default = []
-experimental = ["libcramjam/blosc2"]
-use-system-blosc2 = ["experimental", "libcramjam/use-system-blosc2"]
-blosc2-static = ["experimental", "libcramjam/blosc2-static"]
-blosc2-shared = ["experimental", "libcramjam/blosc2-shared"]
+default = ["blosc2-shared", "blosc2-static"]
+extension-module = []  # only here for uniformity w/ cramjam-python's feat set
+use-system-blosc2 = ["libcramjam/use-system-blosc2"]
+blosc2-static = ["libcramjam/blosc2-static"]
+blosc2-shared = ["libcramjam/blosc2-shared"]
 
 [dependencies]
 clap = { version = "^4.2", features = ["derive"] }
diff --git a/cramjam-cli/src/main.rs b/cramjam-cli/src/main.rs
index dac00a11..c1141957 100644
--- a/cramjam-cli/src/main.rs
+++ b/cramjam-cli/src/main.rs
@@ -45,6 +45,7 @@ enum Codec {
     Gzip(Config),
     Deflate(Config),
     Bzip2(Config),
+    Blosc2(Config),
 }
 
 trait ReadableDowncast: Read + Any {
@@ -121,6 +122,10 @@ pub fn main() -> io::Result<()> {
 
     let start = Instant::now();
     let nbytes = match m.codec {
+        Codec::Blosc2(conf) => match conf.action {
+            Action::Compress => libcramjam::blosc2::compress(input, &mut output),
+            Action::Decompress => libcramjam::blosc2::decompress(input, &mut output),
+        },
         Codec::Snappy(conf) => match conf.action {
             Action::Compress => libcramjam::snappy::compress(input, &mut output),
             Action::Decompress => libcramjam::snappy::decompress(input, &mut output),
diff --git a/cramjam-cli/tests/test_cli.py b/cramjam-cli/tests/test_cli.py
index 12107d3e..48a4d28f 100644
--- a/cramjam-cli/tests/test_cli.py
+++ b/cramjam-cli/tests/test_cli.py
@@ -11,6 +11,11 @@
 
 VARIANTS = ("snappy", "brotli", "bzip2", "lz4", "gzip", "deflate", "zstd")
 
+# TODO: after blosc2 is moved out of cramjam experimental
+if not hasattr(cramjam, "blosc2") and hasattr(cramjam, "experimental") and hasattr(cramjam.experimental, "blosc2"):
+    cramjam.blosc2 = cramjam.experimental.blosc2
+    VARIANTS = (*VARIANTS, "blosc2")
+
 # Some OS can be slow or have higher variability in their runtimes on CI
 settings.register_profile("local", deadline=timedelta(milliseconds=1000))
 settings.register_profile("CI", deadline=None, max_examples=10)
@@ -38,7 +43,8 @@ def test_cli_file_to_file(data, variant):
         run_command(cmd)
 
         expected = bytes(getattr(cramjam, variant).compress(data))
-        assert expected == compressed_file.read_bytes()
+        if variant != "blosc2":
+            assert expected == compressed_file.read_bytes()
 
         decompressed_file = pathlib.Path(tmpdir).joinpath("decompressed.txt")
         run_command(
@@ -59,7 +65,8 @@ def test_cli_file_to_stdout(data, variant):
         out = run_command(cmd)
 
         expected = bytes(getattr(cramjam, variant).compress(data))
-        assert expected == out
+        if variant != "blosc2":
+            assert expected == out
 
         compressed = pathlib.Path(tmpdir).joinpath(f"compressed.txt.{variant}")
         compressed.write_bytes(expected)
diff --git a/cramjam-python/Cargo.toml b/cramjam-python/Cargo.toml
index 1b2576e8..9692a045 100644
--- a/cramjam-python/Cargo.toml
+++ b/cramjam-python/Cargo.toml
@@ -13,15 +13,13 @@ name = "cramjam"
 crate-type = ["cdylib"]
 
 [features]
-default = ["extension-module", "experimental"]
+default = ["extension-module"]
 extension-module = ["pyo3/extension-module"]
 generate-import-lib = ["pyo3/generate-import-lib"]  # needed for Windows PyPy builds
 
-experimental = ["libcramjam/blosc2"]
-
-blosc2-static = ["experimental", "libcramjam/blosc2-static"]
-blosc2-shared = ["experimental", "libcramjam/blosc2-shared"]
-use-system-blosc2 = ["experimental", "libcramjam/use-system-blosc2"]
+blosc2-static = ["libcramjam/blosc2-static"]
+blosc2-shared = ["libcramjam/blosc2-shared"]
+use-system-blosc2 = ["libcramjam/use-system-blosc2"]
 
 
 [dependencies]
diff --git a/cramjam-python/README.md b/cramjam-python/README.md
index 0285b117..4740f4b2 100644
--- a/cramjam-python/README.md
+++ b/cramjam-python/README.md
@@ -1,7 +1,7 @@
 # cramjam-python
 
 [![Code Style](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/python/black)
-[![CI](https://github.com/milesgranger/pyrus-cramjam/workflows/CI/badge.svg?branch=master)](https://github.com/milesgranger/pyrus-cramjam/actions?query=branch=master)
+[![CI](https://github.com/milesgranger/cramjam/workflows/CI-python/badge.svg?branch=master)](https://github.com/milesgranger/cramjam/actions?query=branch=master)
 [![PyPI](https://img.shields.io/pypi/v/cramjam.svg)](https://pypi.org/project/cramjam)
 [![Anaconda-Server Badge](https://anaconda.org/conda-forge/cramjam/badges/version.svg)](https://anaconda.org/conda-forge/cramjam)
 [![Downloads](https://pepy.tech/badge/cramjam/month)](https://pepy.tech/project/cramjam)
@@ -43,6 +43,7 @@ Available algorithms:
 - [X] Deflate   (cramjam.deflate)
 - [X] ZSTD      (cramjam.zstd)
 - [X] XZ / LZMA (cramjam.xz)
+- [X] Blosc2    (cramjam.experimental.blosc2)
 
 All available for use as:
 
diff --git a/cramjam-python/src/lib.rs b/cramjam-python/src/lib.rs
index c1ab1132..e9fb71a8 100644
--- a/cramjam-python/src/lib.rs
+++ b/cramjam-python/src/lib.rs
@@ -51,15 +51,12 @@
 //! b'some bytes here'
 //! ```
 
-#[cfg(feature = "experimental")]
 pub mod blosc2;
-
 pub mod brotli;
 pub mod bzip2;
 pub mod deflate;
 pub mod exceptions;
 
-#[cfg(feature = "experimental")]
 pub mod experimental;
 
 pub mod gzip;
@@ -395,8 +392,6 @@ fn cramjam(py: Python, m: &PyModule) -> PyResult<()> {
     make_submodule!(py -> m -> deflate);
     make_submodule!(py -> m -> xz);
     make_submodule!(py -> m -> zstd);
-
-    #[cfg(feature = "experimental")]
     make_submodule!(py -> m -> experimental);
 
     Ok(())
diff --git a/libcramjam/Cargo.toml b/libcramjam/Cargo.toml
index 4fb65991..f151c93b 100644
--- a/libcramjam/Cargo.toml
+++ b/libcramjam/Cargo.toml
@@ -1,32 +1,40 @@
 [package]
-name = "libcramjam"
-version = "0.4.0"
-edition = "2021"
-license = "MIT"
+name        = "libcramjam"
+version     = "0.4.0"
+edition     = "2021"
+license     = "MIT"
 description = "Compression library combining a plethora of algorithms in a similar as possible API"
-readme = "README.md"
+readme      = "README.md"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [features]
-default = []
-capi = ["libc"]
-blosc2 = ["blosc2-rs"]
-blosc2-static = ["blosc2", "blosc2-rs/static"]
-blosc2-shared = ["blosc2", "blosc2-rs/shared"]
+default           = ["snappy", "lz4", "bzip2", "brotli", "xz", "zstd", "gzip", "deflate", "blosc2"]
+capi              = ["dep:libc"]
+snappy            = ["dep:snap"]
+lz4               = ["dep:lz4"]
+bzip2             = ["dep:bzip2"]
+brotli            = ["dep:brotli"]
+xz                = ["dep:xz2"]
+zstd              = ["dep:zstd"]
+gzip              = ["dep:libdeflater", "dep:libdeflate-sys", "dep:flate2"]
+deflate           = ["dep:libdeflater", "dep:libdeflate-sys", "dep:flate2"]
+blosc2            = ["dep:blosc2-rs"]
+blosc2-static     = ["blosc2", "blosc2-rs/static"]
+blosc2-shared     = ["blosc2", "blosc2-rs/shared"]
 use-system-blosc2 = ["blosc2", "blosc2-rs/use-system-blosc2"]
 
 [dependencies]
-snap = "^1"
-brotli = { version = "^3", default-features = false, features = ["std", "ffi-api"] }
-bzip2 = "^0.4"
-lz4 = "^1"
-flate2 = "^1"
-blosc2-rs = { git = "https://github.com/milesgranger/blosc2-rs.git", optional = true }
-libdeflater = "^1"  
-libdeflate-sys = "<1.20.0"# TODO: requires gcc>=4.9 not available on Python's CI wheel builds
-zstd = "0.13.0"
-libc = { version = "0.2", optional = true }
-xz2 = { version = "0.1.7", features = ["static"] }
+libc           = { version = "0.2", optional = true }
+snap           = { version = "^1", optional = true }
+brotli         = { version = "^3", default-features = false, features = ["std", "ffi-api"], optional = true }
+bzip2          = { version = "^0.4", optional = true }
+lz4            = { version = "^1", optional = true }
+flate2         = { version = "^1", optional = true }
+libdeflater    = { version = "^1", optional = true }
+libdeflate-sys = { version = "<1.20.0", optional = true }  # TODO: requires gcc>=4.9 not available on Python's CI wheel builds
+blosc2-rs      = { git = "https://github.com/milesgranger/blosc2-rs.git", optional = true }
+zstd           = { version = "^0.13", optional = true }
+xz2            = { version = "0.1.7", features = ["static"], optional = true }
 
 [build-dependencies]
 cbindgen = "^0.24"
diff --git a/libcramjam/src/capi.rs b/libcramjam/src/capi.rs
index 4a7233c2..8a345608 100644
--- a/libcramjam/src/capi.rs
+++ b/libcramjam/src/capi.rs
@@ -5,7 +5,20 @@ use std::io::Cursor;
 use std::io::Write;
 use std::slice;
 
-use crate::{brotli, bzip2, deflate, gzip, lz4, snappy, zstd};
+#[cfg(feature = "brotli")]
+use crate::brotli;
+#[cfg(feature = "bzip2")]
+use crate::bzip2;
+#[cfg(feature = "deflate")]
+use crate::deflate;
+#[cfg(feature = "gzip")]
+use crate::gzip;
+#[cfg(feature = "lz4")]
+use crate::lz4;
+#[cfg(feature = "snappy")]
+use crate::snappy;
+#[cfg(feature = "zstd")]
+use crate::zstd;
 
 #[repr(C)]
 pub struct Buffer {
@@ -50,20 +63,35 @@ impl From<Vec<u8>> for Buffer {
 #[derive(Debug, Copy, Clone)]
 #[repr(C)]
 pub enum Codec {
+    #[cfg(feature = "snappy")]
     #[allow(dead_code)]
     Snappy,
+
+    #[cfg(feature = "snappy")]
     #[allow(dead_code)]
     SnappyRaw,
+
+    #[cfg(feature = "bzip2")]
     #[allow(dead_code)]
     Bzip2,
+
+    #[cfg(feature = "lz4")]
     #[allow(dead_code)]
     Lz4,
+
+    #[cfg(feature = "lz4")]
     #[allow(dead_code)]
     Lz4Block,
+
+    #[cfg(feature = "zstd")]
     #[allow(dead_code)]
     Zstd,
+
+    #[cfg(feature = "gzip")]
     #[allow(dead_code)]
     Gzip,
+
+    #[cfg(feature = "brotli")]
     #[allow(dead_code)]
     Brotli,
 }
@@ -72,25 +100,42 @@ pub enum Codec {
 #[derive(Debug)]
 #[repr(C)]
 pub enum StreamingCodec {
+    #[cfg(feature = "bzip2")]
     #[allow(dead_code)]
     StreamingBzip2,
+
+    #[cfg(feature = "snappy")]
     #[allow(dead_code)]
     StreamingSnappy,
+
+    #[cfg(feature = "lz4")]
     #[allow(dead_code)]
     StreamingLz4,
+
+    #[cfg(feature = "zstd")]
     #[allow(dead_code)]
     StreamingZstd,
+
+    #[cfg(feature = "gzip")]
     #[allow(dead_code)]
     StreamingGzip,
+
+    #[cfg(feature = "brotli")]
     #[allow(dead_code)]
     StreamingBrotli,
 }
 
+#[cfg(feature = "snappy")]
 type SnappyFrameCompressor = snappy::snap::write::FrameEncoder<Vec<u8>>;
+#[cfg(feature = "bzip2")]
 type Bzip2Compressor = bzip2::bzip2::write::BzEncoder<Vec<u8>>;
+#[cfg(feature = "lz4")]
 type Lz4Compressor = crate::lz4::lz4::Encoder<Vec<u8>>;
+#[cfg(feature = "gzip")]
 type GzipCompressor = crate::gzip::flate2::write::GzEncoder<Vec<u8>>;
+#[cfg(feature = "brotli")]
 type BrotliCompressor = brotli::brotli::CompressorWriter<Vec<u8>>;
+#[cfg(feature = "zstd")]
 type ZstdCompressor<'a> = crate::zstd::zstd::Encoder<'a, Vec<u8>>;
 
 type Decompressor = Cursor<Vec<u8>>;
@@ -128,8 +173,10 @@ pub extern "C" fn decompress(
 ) -> Buffer {
     let mut decompressed = Cursor::new(vec![]);
     let mut compressed = Cursor::new(unsafe { std::slice::from_raw_parts(input, input_len) });
-    let ret = match codec {
+    let ret: Result<usize, std::io::Error> = match codec {
+        #[cfg(feature = "snappy")]
         Codec::Snappy => snappy::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "snappy")]
         Codec::SnappyRaw => snappy::raw::decompress_vec(compressed.get_ref()).map(|v| {
             let len = v.len();
             *decompressed.get_mut() = v;
@@ -137,11 +184,17 @@ pub extern "C" fn decompress(
             compressed.set_position(input_len as _); // todo, assuming it read the whole thing
             len
         }),
+        #[cfg(feature = "bzip2")]
         Codec::Bzip2 => bzip2::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "brotli")]
         Codec::Brotli => brotli::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "gzip")]
         Codec::Gzip => gzip::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "zstd")]
         Codec::Zstd => zstd::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "lz4")]
         Codec::Lz4 => lz4::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "lz4")]
         Codec::Lz4Block => lz4::block::decompress_vec(compressed.get_ref()).map(|v| {
             let len = v.len();
             *decompressed.get_mut() = v;
@@ -183,11 +236,13 @@ pub extern "C" fn compress(
         error_to_ptr("Requires compression >= 0", error);
         return Buffer::empty();
     }
-    let level = Some(level as _);
+    let level = Some(level);
     let mut compressed = Cursor::new(vec![]);
     let mut decompressed = Cursor::new(unsafe { std::slice::from_raw_parts(input, input_len) });
-    let ret = match codec {
+    let ret: Result<usize, std::io::Error> = match codec {
+        #[cfg(feature = "snappy")]
         Codec::Snappy => snappy::compress(&mut decompressed, &mut compressed),
+        #[cfg(feature = "snappy")]
         Codec::SnappyRaw => snappy::raw::compress_vec(decompressed.get_ref()).map(|v| {
             let len = v.len();
             *compressed.get_mut() = v;
@@ -195,19 +250,26 @@ pub extern "C" fn compress(
             decompressed.set_position(input_len as _);
             len
         }),
-        Codec::Bzip2 => bzip2::compress(&mut decompressed, &mut compressed, level),
-        Codec::Brotli => brotli::compress(&mut decompressed, &mut compressed, level),
-        Codec::Gzip => gzip::compress(&mut decompressed, &mut compressed, level),
-        Codec::Zstd => zstd::compress(&mut decompressed, &mut compressed, level.map(|v| v as i32)),
-        Codec::Lz4 => lz4::compress(&mut decompressed, &mut compressed, level),
+        #[cfg(feature = "bzip2")]
+        Codec::Bzip2 => bzip2::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
+        #[cfg(feature = "brotli")]
+        Codec::Brotli => brotli::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
+        #[cfg(feature = "gzip")]
+        Codec::Gzip => gzip::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
+        #[cfg(feature = "zstd")]
+        Codec::Zstd => zstd::compress(&mut decompressed, &mut compressed, level.map(|v: i32| v as i32)),
+        #[cfg(feature = "lz4")]
+        Codec::Lz4 => lz4::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
         // TODO: Support passing acceleration
-        Codec::Lz4Block => lz4::block::compress_vec(decompressed.get_ref(), level, None, Some(true)).map(|v| {
-            let len = v.len();
-            *compressed.get_mut() = v;
-            compressed.set_position(len as _);
-            decompressed.set_position(input_len as _);
-            len
-        }), // TODO
+        #[cfg(feature = "lz4")]
+        Codec::Lz4Block => lz4::block::compress_vec(decompressed.get_ref(), level.map(|v| v as _), None, Some(true))
+            .map(|v| {
+                let len = v.len();
+                *compressed.get_mut() = v;
+                compressed.set_position(len as _);
+                decompressed.set_position(input_len as _);
+                len
+            }), // TODO
     };
     match ret {
         Ok(n) => {
@@ -242,14 +304,22 @@ pub extern "C" fn decompress_into(
     let mut compressed = Cursor::new(unsafe { std::slice::from_raw_parts(input, input_len) });
     let mut decompressed = Cursor::new(unsafe { std::slice::from_raw_parts_mut(output, output_len) });
 
-    let ret = match codec {
+    let ret: Result<usize, std::io::Error> = match codec {
+        #[cfg(feature = "snappy")]
         Codec::Snappy => snappy::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "snappy")]
         Codec::SnappyRaw => snappy::raw::decompress(compressed.get_ref(), decompressed.get_mut()),
+        #[cfg(feature = "bzip2")]
         Codec::Bzip2 => bzip2::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "brotli")]
         Codec::Brotli => brotli::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "gzip")]
         Codec::Gzip => gzip::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "zstd")]
         Codec::Zstd => zstd::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "lz4")]
         Codec::Lz4 => lz4::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "lz4")]
         Codec::Lz4Block => lz4::block::decompress_into(&compressed.get_ref(), decompressed.get_mut(), None),
     };
     match ret {
@@ -284,18 +354,26 @@ pub extern "C" fn compress_into(
         error_to_ptr("Requires compression >= 0", error);
         return;
     }
-    let level = Some(level as _);
+    let level = Some(level);
 
-    let ret = match codec {
+    let ret: Result<usize, std::io::Error> = match codec {
+        #[cfg(feature = "snappy")]
         Codec::Snappy => snappy::compress(&mut decompressed, &mut compressed),
+        #[cfg(feature = "snappy")]
         Codec::SnappyRaw => snappy::raw::compress(decompressed, &mut compressed),
-        Codec::Bzip2 => bzip2::compress(&mut decompressed, &mut compressed, level),
-        Codec::Brotli => brotli::compress(&mut decompressed, &mut compressed, level),
-        Codec::Gzip => gzip::compress(&mut decompressed, &mut compressed, level),
-        Codec::Zstd => zstd::compress(&mut decompressed, &mut compressed, level.map(|v| v as i32)),
-        Codec::Lz4 => lz4::compress(&mut decompressed, &mut compressed, level),
+        #[cfg(feature = "bzip2")]
+        Codec::Bzip2 => bzip2::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
+        #[cfg(feature = "brotli")]
+        Codec::Brotli => brotli::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
+        #[cfg(feature = "gzip")]
+        Codec::Gzip => gzip::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
+        #[cfg(feature = "zstd")]
+        Codec::Zstd => zstd::compress(&mut decompressed, &mut compressed, level.map(|v: i32| v as i32)),
+        #[cfg(feature = "lz4")]
+        Codec::Lz4 => lz4::compress(&mut decompressed, &mut compressed, level.map(|v| v as _)),
         // TODO: Support passing acceleration
-        Codec::Lz4Block => lz4::block::compress_into(decompressed, compressed, level, None, Some(true)),
+        #[cfg(feature = "lz4")]
+        Codec::Lz4Block => lz4::block::compress_into(decompressed, compressed, level.map(|v| v as _), None, Some(true)),
     };
     match ret {
         Ok(n) => {
@@ -315,6 +393,7 @@ pub extern "C" fn compress_into(
 #[allow(unused_variables)]
 pub extern "C" fn compressor_init(codec: StreamingCodec, level: i32, error: &mut *mut c_char) -> *mut c_void {
     match codec {
+        #[cfg(feature = "bzip2")]
         StreamingCodec::StreamingBzip2 => {
             if level < 0 {
                 error_to_ptr("Bzip2 requires compression level >= 0", error);
@@ -323,6 +402,7 @@ pub extern "C" fn compressor_init(codec: StreamingCodec, level: i32, error: &mut
             let compressor = bzip2::bzip2::write::BzEncoder::new(vec![], bzip2::bzip2::Compression::new(level as _));
             Box::into_raw(Box::new(compressor)) as _
         }
+        #[cfg(feature = "brotli")]
         StreamingCodec::StreamingBrotli => {
             if level < 0 {
                 error_to_ptr("Brotli requires compression level >= 0", error);
@@ -331,6 +411,7 @@ pub extern "C" fn compressor_init(codec: StreamingCodec, level: i32, error: &mut
             let compressor = brotli::make_write_compressor(vec![], Some(level as _));
             Box::into_raw(Box::new(compressor)) as _
         }
+        #[cfg(feature = "gzip")]
         StreamingCodec::StreamingGzip => {
             if level < 1 {
                 error_to_ptr("Gzip requires compression level >= 1", error);
@@ -339,14 +420,17 @@ pub extern "C" fn compressor_init(codec: StreamingCodec, level: i32, error: &mut
             let compressor = gzip::flate2::write::GzEncoder::new(vec![], gzip::flate2::Compression::new(level as _));
             Box::into_raw(Box::new(compressor)) as _
         }
+        #[cfg(feature = "zstd")]
         StreamingCodec::StreamingZstd => {
             let compressor = zstd::zstd::Encoder::new(vec![], level);
             Box::into_raw(Box::new(compressor)) as _
         }
+        #[cfg(feature = "snappy")]
         StreamingCodec::StreamingSnappy => {
             let compressor = snappy::snap::write::FrameEncoder::new(vec![]);
             Box::into_raw(Box::new(compressor)) as _
         }
+        #[cfg(feature = "lz4")]
         StreamingCodec::StreamingLz4 => {
             if level < 0 {
                 error_to_ptr("Lz4 requires compression level >= 0", error);
@@ -363,21 +447,27 @@ pub extern "C" fn free_compressor(codec: StreamingCodec, compressor_ptr: &mut *m
     if !(*compressor_ptr).is_null() {
         {
             match codec {
+                #[cfg(feature = "bzip2")]
                 StreamingCodec::StreamingBzip2 => {
                     let _ = unsafe { Box::from_raw(*compressor_ptr as *mut Bzip2Compressor) };
                 }
+                #[cfg(feature = "brotli")]
                 StreamingCodec::StreamingBrotli => {
                     let _ = unsafe { Box::from_raw(*compressor_ptr as *mut BrotliCompressor) };
                 }
+                #[cfg(feature = "gzip")]
                 StreamingCodec::StreamingGzip => {
                     let _ = unsafe { Box::from_raw(*compressor_ptr as *mut GzipCompressor) };
                 }
+                #[cfg(feature = "zstd")]
                 StreamingCodec::StreamingZstd => {
                     let _ = unsafe { Box::from_raw(*compressor_ptr as *mut ZstdCompressor) };
                 }
+                #[cfg(feature = "snappy")]
                 StreamingCodec::StreamingSnappy => {
                     let _ = unsafe { Box::from_raw(*compressor_ptr as *mut SnappyFrameCompressor) };
                 }
+                #[cfg(feature = "lz4")]
                 StreamingCodec::StreamingLz4 => {
                     let _ = unsafe { Box::from_raw(*compressor_ptr as *mut Lz4Compressor) };
                 }
@@ -390,36 +480,42 @@ pub extern "C" fn free_compressor(codec: StreamingCodec, compressor_ptr: &mut *m
 #[no_mangle]
 pub extern "C" fn compressor_inner(codec: StreamingCodec, compressor_ptr: &mut *mut c_void) -> Buffer {
     match codec {
+        #[cfg(feature = "bzip2")]
         StreamingCodec::StreamingBzip2 => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Bzip2Compressor) };
             let buffer = Buffer::from(compressor.get_ref());
             *compressor_ptr = Box::into_raw(compressor) as _;
             buffer
         }
+        #[cfg(feature = "brotli")]
         StreamingCodec::StreamingBrotli => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut BrotliCompressor) };
             let buffer = Buffer::from(compressor.get_ref());
             *compressor_ptr = Box::into_raw(compressor) as _;
             buffer
         }
+        #[cfg(feature = "gzip")]
         StreamingCodec::StreamingGzip => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut GzipCompressor) };
             let buffer = Buffer::from(compressor.get_ref());
             *compressor_ptr = Box::into_raw(compressor) as _;
             buffer
         }
+        #[cfg(feature = "zstd")]
         StreamingCodec::StreamingZstd => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut ZstdCompressor) };
             let buffer = Buffer::from(compressor.get_ref());
             *compressor_ptr = Box::into_raw(compressor) as _;
             buffer
         }
+        #[cfg(feature = "snappy")]
         StreamingCodec::StreamingSnappy => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut SnappyFrameCompressor) };
             let buffer = Buffer::from(compressor.get_ref());
             *compressor_ptr = Box::into_raw(compressor) as _;
             buffer
         }
+        #[cfg(feature = "lz4")]
         StreamingCodec::StreamingLz4 => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Lz4Compressor) };
             let buffer = Buffer::from(compressor.writer());
@@ -437,6 +533,7 @@ pub extern "C" fn compressor_finish(
     error: &mut *mut c_char,
 ) -> Buffer {
     let buf = match codec {
+        #[cfg(feature = "bzip2")]
         StreamingCodec::StreamingBzip2 => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Bzip2Compressor) };
             match compressor.finish() {
@@ -447,6 +544,7 @@ pub extern "C" fn compressor_finish(
                 }
             }
         }
+        #[cfg(feature = "brotli")]
         StreamingCodec::StreamingBrotli => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut BrotliCompressor) };
             if let Err(err) = compressor.flush() {
@@ -455,6 +553,7 @@ pub extern "C" fn compressor_finish(
             }
             Buffer::from(compressor.into_inner())
         }
+        #[cfg(feature = "gzip")]
         StreamingCodec::StreamingGzip => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut GzipCompressor) };
             match compressor.finish() {
@@ -465,6 +564,7 @@ pub extern "C" fn compressor_finish(
                 }
             }
         }
+        #[cfg(feature = "zstd")]
         StreamingCodec::StreamingZstd => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut ZstdCompressor) };
             match compressor.finish() {
@@ -475,6 +575,7 @@ pub extern "C" fn compressor_finish(
                 }
             }
         }
+        #[cfg(feature = "snappy")]
         StreamingCodec::StreamingSnappy => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut SnappyFrameCompressor) };
             match compressor.into_inner() {
@@ -485,6 +586,7 @@ pub extern "C" fn compressor_finish(
                 }
             }
         }
+        #[cfg(feature = "lz4")]
         StreamingCodec::StreamingLz4 => {
             let compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Lz4Compressor) };
             let (w, ret) = compressor.finish();
@@ -504,6 +606,7 @@ pub extern "C" fn compressor_finish(
 #[no_mangle]
 pub extern "C" fn compressor_flush(codec: StreamingCodec, compressor_ptr: &mut *mut c_void, error: &mut *mut c_char) {
     match codec {
+        #[cfg(feature = "bzip2")]
         StreamingCodec::StreamingBzip2 => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Bzip2Compressor) };
             if let Err(err) = compressor.flush() {
@@ -511,6 +614,7 @@ pub extern "C" fn compressor_flush(codec: StreamingCodec, compressor_ptr: &mut *
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "brotli")]
         StreamingCodec::StreamingBrotli => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut BrotliCompressor) };
             if let Err(err) = compressor.flush() {
@@ -518,6 +622,7 @@ pub extern "C" fn compressor_flush(codec: StreamingCodec, compressor_ptr: &mut *
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "gzip")]
         StreamingCodec::StreamingGzip => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut GzipCompressor) };
             if let Err(err) = compressor.flush() {
@@ -525,6 +630,7 @@ pub extern "C" fn compressor_flush(codec: StreamingCodec, compressor_ptr: &mut *
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "zstd")]
         StreamingCodec::StreamingZstd => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut ZstdCompressor) };
             if let Err(err) = compressor.flush() {
@@ -532,6 +638,7 @@ pub extern "C" fn compressor_flush(codec: StreamingCodec, compressor_ptr: &mut *
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "snappy")]
         StreamingCodec::StreamingSnappy => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut SnappyFrameCompressor) };
             if let Err(err) = compressor.flush() {
@@ -539,6 +646,7 @@ pub extern "C" fn compressor_flush(codec: StreamingCodec, compressor_ptr: &mut *
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "lz4")]
         StreamingCodec::StreamingLz4 => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Lz4Compressor) };
             if let Err(err) = compressor.flush() {
@@ -561,6 +669,7 @@ pub extern "C" fn compressor_compress(
 ) {
     let mut decompressed = Cursor::new(unsafe { slice::from_raw_parts(input, input_len) });
     match codec {
+        #[cfg(feature = "bzip2")]
         StreamingCodec::StreamingBzip2 => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Bzip2Compressor) };
             match std::io::copy(&mut decompressed, &mut compressor) {
@@ -574,6 +683,7 @@ pub extern "C" fn compressor_compress(
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "brotli")]
         StreamingCodec::StreamingBrotli => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut BrotliCompressor) };
             match std::io::copy(&mut decompressed, &mut compressor) {
@@ -587,6 +697,7 @@ pub extern "C" fn compressor_compress(
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "gzip")]
         StreamingCodec::StreamingGzip => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut GzipCompressor) };
             match std::io::copy(&mut decompressed, &mut compressor) {
@@ -600,6 +711,7 @@ pub extern "C" fn compressor_compress(
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "zstd")]
         StreamingCodec::StreamingZstd => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut ZstdCompressor) };
             match std::io::copy(&mut decompressed, &mut compressor) {
@@ -613,6 +725,7 @@ pub extern "C" fn compressor_compress(
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "snappy")]
         StreamingCodec::StreamingSnappy => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut SnappyFrameCompressor) };
             match std::io::copy(&mut decompressed, &mut compressor) {
@@ -626,6 +739,7 @@ pub extern "C" fn compressor_compress(
             }
             *compressor_ptr = Box::into_raw(compressor) as _;
         }
+        #[cfg(feature = "lz4")]
         StreamingCodec::StreamingLz4 => {
             let mut compressor = unsafe { Box::from_raw(*compressor_ptr as *mut Lz4Compressor) };
             match std::io::copy(&mut decompressed, &mut compressor) {
@@ -715,12 +829,18 @@ pub extern "C" fn decompressor_decompress(
     let mut decompressed = unsafe { Box::from_raw(*decompressor_ptr as *mut Decompressor) };
     let start_pos = decompressed.position();
     let mut compressed = Cursor::new(unsafe { std::slice::from_raw_parts(input, input_len) });
-    let ret = match codec {
+    let ret: Result<usize, std::io::Error> = match codec {
+        #[cfg(feature = "bzip2")]
         StreamingCodec::StreamingBzip2 => bzip2::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "gzip")]
         StreamingCodec::StreamingGzip => gzip::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "brotli")]
         StreamingCodec::StreamingBrotli => brotli::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "zstd")]
         StreamingCodec::StreamingZstd => zstd::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "snappy")]
         StreamingCodec::StreamingSnappy => snappy::decompress(&mut compressed, &mut decompressed),
+        #[cfg(feature = "lz4")]
         StreamingCodec::StreamingLz4 => lz4::decompress(&mut compressed, &mut decompressed),
     };
     match ret {
@@ -736,48 +856,57 @@ pub extern "C" fn decompressor_decompress(
 }
 
 /* -------- Codec specific functions ----------*/
+#[cfg(feature = "lz4")]
 #[no_mangle]
 pub extern "C" fn lz4_frame_max_compression_level() -> usize {
     lz4::LZ4_ACCELERATION_MAX as _
 }
 
+#[cfg(feature = "lz4")]
 #[no_mangle]
 pub extern "C" fn lz4_frame_max_compressed_len(input_len: usize, compression_level: i32) -> usize {
     lz4::compress_bound(input_len, Some(compression_level as _))
 }
 
+#[cfg(feature = "lz4")]
 #[no_mangle]
 #[allow(unused_variables)]
 pub extern "C" fn lz4_block_max_compressed_len(input_len: usize, error: &mut *mut c_char) -> usize {
     lz4::block::compress_bound(input_len, Some(true))
 }
 
+#[cfg(feature = "deflate")]
 #[no_mangle]
 pub extern "C" fn deflate_max_compressed_len(input_len: usize, level: i32) -> usize {
     deflate::compress_bound(input_len, Some(level))
 }
 
+#[cfg(feature = "gzip")]
 #[no_mangle]
 pub extern "C" fn gzip_max_compressed_len(input_len: usize, level: i32) -> usize {
     let level = if level < 0 { 0 } else { level };
     gzip::compress_bound(input_len, Some(level)).unwrap()
 }
 
+#[cfg(feature = "zstd")]
 #[no_mangle]
 pub extern "C" fn zstd_max_compressed_len(input_len: usize) -> usize {
     zstd::compress_bound(input_len)
 }
 
+#[cfg(feature = "snappy")]
 #[no_mangle]
 pub extern "C" fn snappy_raw_max_compressed_len(input_len: usize) -> usize {
     snap::raw::max_compress_len(input_len)
 }
 
+#[cfg(feature = "brotli")]
 #[no_mangle]
 pub extern "C" fn brotli_max_compressed_len(input_len: usize) -> usize {
     brotli::compress_bound(input_len)
 }
 
+#[cfg(feature = "snappy")]
 #[no_mangle]
 pub extern "C" fn snappy_raw_decompressed_len(input: *const u8, input_len: usize, error: &mut *mut c_char) -> isize {
     let input = unsafe { slice::from_raw_parts(input, input_len) };
@@ -796,6 +925,7 @@ mod tests {
 
     const DATA: &[u8; 5] = b"bytes";
 
+    #[cfg(feature = "lz4")]
     #[test]
     fn test_lz4_frame_max_compressed_len() {
         // A known simple test case, expected len taken from lz4/lz4 repo
@@ -803,6 +933,7 @@ mod tests {
         assert_eq!(len, 65544);
     }
 
+    #[cfg(feature = "lz4")]
     #[test]
     fn test_lz4_block_max_compressed_len() {
         let mut error: *mut c_char = std::ptr::null_mut();
@@ -811,12 +942,14 @@ mod tests {
         assert_eq!(len, 30);
     }
 
+    #[cfg(feature = "snappy")]
     #[test]
     fn test_snappy_raw_max_compressed_len() {
         let len = snappy_raw_max_compressed_len(10);
         assert_eq!(len, 43);
     }
 
+    #[cfg(feature = "snappy")]
     #[test]
     fn test_snappy_raw_decompressed_len() {
         let uncompressed = b"bytes";
@@ -830,17 +963,20 @@ mod tests {
         assert_eq!(len as usize, uncompressed.len());
     }
 
+    #[cfg(feature = "snappy")]
     #[test]
     fn test_snappy_roundtrip() {
         let mut expected = vec![];
         snappy::compress(Cursor::new(DATA), &mut expected).unwrap();
         roundtrip(Codec::Snappy, &expected, 0);
     }
+    #[cfg(feature = "snappy")]
     #[test]
     fn test_snappy_raw_roundtrip() {
         let expected = snappy::raw::compress_vec(DATA).unwrap();
         roundtrip(Codec::SnappyRaw, &expected, 0);
     }
+    #[cfg(feature = "lz4")]
     #[test]
     fn test_lz4_roundtrip() {
         let mut expected = Cursor::new(vec![]);
@@ -848,11 +984,13 @@ mod tests {
         let expected = expected.into_inner();
         roundtrip(Codec::Lz4, &expected, 6);
     }
+    #[cfg(feature = "lz4")]
     #[test]
     fn test_lz4_block_roundtrip() {
         let expected = lz4::block::compress_vec(DATA, Some(6), Some(1), Some(true)).unwrap();
         roundtrip(Codec::Lz4Block, &expected, 6);
     }
+    #[cfg(feature = "bzip2")]
     #[test]
     fn test_bzip2_roundtrip() {
         let mut expected = Cursor::new(vec![]);
@@ -860,6 +998,7 @@ mod tests {
         let expected = expected.into_inner();
         roundtrip(Codec::Bzip2, &expected, 6);
     }
+    #[cfg(feature = "brotli")]
     #[test]
     fn test_brotli_roundtrip() {
         let mut expected = Cursor::new(vec![]);
@@ -867,6 +1006,7 @@ mod tests {
         let expected = expected.into_inner();
         roundtrip(Codec::Brotli, &expected, 6);
     }
+    #[cfg(feature = "zstd")]
     #[test]
     fn test_zstd_roundtrip() {
         let mut expected = Cursor::new(vec![]);
diff --git a/libcramjam/src/lib.rs b/libcramjam/src/lib.rs
index 9d4613c5..8581669e 100644
--- a/libcramjam/src/lib.rs
+++ b/libcramjam/src/lib.rs
@@ -1,18 +1,24 @@
 #[cfg(feature = "blosc2")]
 pub mod blosc2;
-
+#[cfg(feature = "brotli")]
 pub mod brotli;
+#[cfg(feature = "bzip2")]
 pub mod bzip2;
+#[cfg(feature = "capi")]
+mod capi;
+#[cfg(feature = "deflate")]
 pub mod deflate;
+#[cfg(feature = "gzip")]
 pub mod gzip;
+#[cfg(feature = "lz4")]
 pub mod lz4;
+#[cfg(feature = "snappy")]
 pub mod snappy;
+#[cfg(feature = "xz")]
 pub mod xz;
+#[cfg(feature = "zstd")]
 pub mod zstd;
 
-#[cfg(feature = "capi")]
-mod capi;
-
 #[cfg(test)]
 mod tests {
 
@@ -78,24 +84,46 @@ mod tests {
     }
 
     // Expected compressed_len, subsequent args are supplied to the variant's `compress` call.
+    #[cfg(feature = "snappy")]
     test_variant!(snappy, compressed_len = 2_572_398);
+
+    #[cfg(feature = "gzip")]
     test_variant!(gzip, compressed_len = 157_192, None);
+
+    #[cfg(feature = "brotli")]
     test_variant!(brotli, compressed_len = 128, None);
+
+    #[cfg(feature = "bzip2")]
     test_variant!(bzip2, compressed_len = 14_207, None);
+
+    #[cfg(feature = "deflate")]
     test_variant!(deflate, compressed_len = 157_174, None);
+
+    #[cfg(feature = "zstd")]
     test_variant!(zstd, compressed_len = 4990, None);
+
+    #[cfg(feature = "lz4")]
     test_variant!(lz4, compressed_len = 303_278, None);
 
     #[cfg(feature = "blosc2")]
     test_variant!(blosc2, compressed_len = 791_923);
 
+    #[cfg(feature = "xz")]
     #[allow(non_upper_case_globals)]
     const format: Option<crate::xz::Format> = None;
+
     #[allow(non_upper_case_globals)]
+    #[cfg(feature = "xz")]
     const check: Option<crate::xz::Check> = None;
+
     #[allow(non_upper_case_globals)]
+    #[cfg(feature = "xz")]
     const filters: Option<crate::xz::Filters> = None;
+
     #[allow(non_upper_case_globals)]
+    #[cfg(feature = "xz")]
     const opts: Option<crate::xz::LzmaOptions> = None;
+
+    #[cfg(feature = "xz")]
     test_variant!(xz, compressed_len = 8_020, None, format, check, filters, opts);
 }