Add environment variable for using system libjq and libonig

.github/workflows/build.yml

@@ -10,6 +10,11 @@ jobs:
       matrix:
         os: [ubuntu-20.04, macos-11]
         python-version: [3.5, 3.6, 3.7, 3.8, 3.9, "3.10", "3.11", "3.12-dev", "pypy-3.7"]
+        use-system-libs: [false]
+        include:
+          - os: ubuntu-20.04
+            python-version: "3.11"
+            use-system-libs: true
 
     steps:
 
@@ -25,6 +30,16 @@ jobs:
     - run: "make jq.c"
 
     - run: tox -e py
+      if: ${{ !matrix.use-system-libs }}
+
+    - run: |
+        # Remove deps to make sure they're not being used
+        rm -r deps
+
+        sudo apt-get install -y libjq-dev libonig-dev
+
+        JQPY_USE_SYSTEM_LIBS=1 tox -e py
+      if: ${{ matrix.use-system-libs }}
 
   build_sdist:
     name: Build source distribution

CHANGELOG.rst

@@ -1,6 +1,14 @@
 Changelog
 =========
 
+1.6.0
+-----
+
+* Add support for building with Cython 3.
+
+* Add support for building with the system libjq and libonig instead of building
+  using the bundled source.
+
 1.5.0
 -----
 

README.rst

@@ -15,7 +15,7 @@ On these platforms, you should be able to install jq with a normal pip install:
     pip install jq
 
 If a wheel is not available,
-the source for jq 1.6 is downloaded over HTTPS and built.
+the source for jq 1.6 is built.
 This requires:
 
 * Autoreconf
@@ -26,6 +26,9 @@ This requires:
 
 * Python headers.
 
+Alternatively, set the environment variable ``JQPY_USE_SYSTEM_LIBS`` to ``1`` when installing the package
+to use the libjq and libonig versions available on the system rather than building them.
+
 Debian, Ubuntu or relatives
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

setup.py

@@ -32,7 +32,7 @@ def _read(fname):
 oniguruma_lib_build_dir = _dep_build_path("onig-{}".format(oniguruma_version))
 oniguruma_lib_install_dir = _dep_build_path("onig-install-{}".format(oniguruma_version))
 
-class jq_build_ext(build_ext):
+class jq_with_deps_build_ext(build_ext):
     def run(self):
         if not os.path.exists(_dep_build_path(".")):
             os.makedirs(_dep_build_path("."))
@@ -83,15 +83,28 @@ def _extract_tarball(self, tarball_path, lib_dir):
         tarfile.open(tarball_path, "r:gz").extractall(_dep_build_path("."))
 
 
+use_system_libs = bool(os.environ.get("JQPY_USE_SYSTEM_LIBS"))
+
+
+if use_system_libs:
+    jq_build_ext = build_ext
+    link_args_deps = ["-ljq", "-lonig"]
+    extra_objects = []
+else:
+    jq_build_ext = jq_with_deps_build_ext
+    link_args_deps = []
+    extra_objects = [
+        os.path.join(jq_lib_dir, ".libs/libjq.a"),
+        os.path.join(oniguruma_lib_install_dir, "lib/libonig.a"),
+    ]
+
+
 jq_extension = Extension(
     "jq",
     sources=["jq.c"],
     include_dirs=[os.path.join(jq_lib_dir, "src")],
-    extra_link_args=["-lm"],
-    extra_objects=[
-        os.path.join(jq_lib_dir, ".libs/libjq.a"),
-        os.path.join(oniguruma_lib_install_dir, "lib/libonig.a"),
-    ],
+    extra_link_args=["-lm"] + link_args_deps,
+    extra_objects=extra_objects,
 )
 
 setup(

tox.ini

@@ -6,6 +6,7 @@ changedir = {envtmpdir}
 deps=-r{toxinidir}/test-requirements.txt
 commands=
     py.test {toxinidir}/tests
+passenv = JQPY_USE_SYSTEM_LIBS
 
 [pytest]
 python_files = *_tests.py