diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b46818df..1100aae5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,7 +34,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ["3.7", "3.11"]
-        runs-on: [ubuntu-latest] # , macos-latest
+        runs-on: [ubuntu-latest, macos-latest]
 
         # include:
         # - python-version: pypy-3.8
@@ -51,27 +51,41 @@ jobs:
 
       - name: Install compiler tools on macOS
         if: runner.os == 'macOS'
-        run: brew install automake swig gmp mpfr boost
+        run: |
+          brew install make gcc automake swig gmp mpfr boost
+          export PATH="/usr/local/opt/make/libexec/gnubin:$PATH"
 
       - name: Install extra deps on Linux
         if: runner.os == 'Linux'
         run: sudo apt-get update && sudo apt-get install -y libboost-dev libmpfr-dev swig autoconf libtool
 
       - name: Install package
-        run: python -m pip install '.[test]' -v
+        run: |
+          echo $PATH
+          python -m pip install '.[test]' -v
 
       - name: Test package
         run: python -m pytest -vv -rs -Wd
 
   test_wheels:
-    name: Wheel on Linux
-    runs-on: ubuntu-latest
+    name: "Wheel on ${{ matrix.os }}"
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
 
     steps:
       - uses: actions/checkout@v3
         with:
           submodules: recursive
 
+      - name: Install compiler tools on macOS
+        if: runner.os == 'macOS'
+        run: |
+          brew install make gcc automake swig gmp mpfr boost
+          export PATH="/usr/local/opt/make/libexec/gnubin:$PATH"
+
       - uses: pypa/cibuildwheel@v2.11.3
         env:
           CIBW_ARCHS: auto64
diff --git a/.github/workflows/wheels.yml b/.github/workflows/wheels.yml
index 1748d2c6..2aabcc26 100644
--- a/.github/workflows/wheels.yml
+++ b/.github/workflows/wheels.yml
@@ -30,7 +30,7 @@ jobs:
       matrix:
         python-build-version:
           ["cp37-*", "cp38-*", "cp39-*", "cp310-*", "cp311-*"]
-        os: [ubuntu-latest] # , macos-latest
+        os: [ubuntu-latest, macos-latest]
 
     steps:
       - uses: actions/checkout@v3
@@ -39,7 +39,9 @@ jobs:
 
       - name: Install compiler tools on macOS
         if: runner.os == 'macOS'
-        run: brew install automake
+        run: |
+          brew install make gcc automake swig gmp mpfr boost
+          export PATH="/usr/local/opt/make/libexec/gnubin:$PATH"
 
       - uses: pypa/cibuildwheel@v2.11.3
         env:
diff --git a/setup.py b/setup.py
index bd7fd993..c2e1dc29 100644
--- a/setup.py
+++ b/setup.py
@@ -78,23 +78,27 @@ def build_extensions(self):
             env = os.environ.copy()
             env["PYTHON"] = sys.executable
             env["PYTHON_INCLUDE"] = f'-I{sysconfig.get_path("include")}'
-            env["CXXFLAGS"] = "-O3 -Bstatic -lgmp -Bdynamic"
+            env["CXXFLAGS"] = "-O3 -Bstatic -lgmp -Bdynamic -std=c++17"
             env["ORIGIN"] = "$ORIGIN"  # if evaluated, it will still be '$ORIGIN'
 
             args = [
                 f"--prefix={OUTPUT}",
+                "--disable-auto-ptr",
                 "--enable-allcxxplugins",
                 "--enable-cgal-header-only",
                 "--enable-cgal",
                 f"--with-cgaldir={cgal_dir}",
                 "--enable-swig",
                 "--enable-pyext",
-                "LDFLAGS=-Wl,-rpath=$$ORIGIN/_fastjet_core/lib:$$ORIGIN",
+                "LDFLAGS=-Wl,-rpath,$$ORIGIN/_fastjet_core/lib:$$ORIGIN",
             ]
 
             try:
                 subprocess.run(
-                    ["./autogen.sh"] + args, cwd=FASTJET, env=env, check=True
+                    ["./autogen.sh"] + args,
+                    cwd=FASTJET,
+                    env=env,
+                    check=True,
                 )
             except Exception:
                 subprocess.run(["cat", "config.log"], cwd=FASTJET, check=True)
@@ -106,7 +110,11 @@ def build_extensions(self):
             subprocess.run(["make", "install"], cwd=FASTJET, env=env, check=True)
 
             subprocess.run(
-                ["./configure", f"--fastjet-config={FASTJET}/fastjet-config"],
+                [
+                    "./configure",
+                    f"--fastjet-config={FASTJET}/fastjet-config",
+                    "CXXFLAGS=-O3 -Bstatic -Bdynamic -std=c++17",
+                ],
                 cwd=FASTJET_CONTRIB,
                 env=env,
                 check=True,
@@ -134,24 +142,28 @@ def run(self):
 
         shutil.copytree(OUTPUT, fastjetdir / "_fastjet_core", symlinks=True)
 
+        make = "make"
+        if sys.platform == "darwin":
+            make = "gmake"
+
         pythondir = pathlib.Path(
             subprocess.check_output(
-                """make -f pyinterface/Makefile --eval='print-pythondir:
+                f"""{make} -f Makefile --eval='print-pythondir:
 \t@echo $(pythondir)
 ' print-pythondir""",
                 shell=True,
-                cwd=FASTJET,
+                cwd=FASTJET / "pyinterface",
                 universal_newlines=True,
             ).strip()
         )
 
         pyexecdir = pathlib.Path(
             subprocess.check_output(
-                """make -f pyinterface/Makefile --eval='print-pyexecdir:
+                f"""{make} -f Makefile --eval='print-pyexecdir:
 \t@echo $(pyexecdir)
 ' print-pyexecdir""",
                 shell=True,
-                cwd=FASTJET,
+                cwd=FASTJET / "pyinterface",
                 universal_newlines=True,
             ).strip()
         )
diff --git a/src/_ext.cpp b/src/_ext.cpp
index 12c22e42..a7403a4d 100644
--- a/src/_ext.cpp
+++ b/src/_ext.cpp
@@ -1901,7 +1901,7 @@ PYBIND11_MODULE(_ext, m) {
 
         auto off = py::array(py::buffer_info(nullptr, sizeof(int), py::format_descriptor<int>::value, 1, {len+1}, {sizeof(int)}));
         auto bufoff = off.request();
-        int *ptroff = (int *)realloc(bufoff.ptr, (len+1)*sizeof(int)+1);;
+        int *ptroff = (int *)bufoff.ptr;
         size_t idxe = 0;
         *ptroff = 0;
         ptroff++;
@@ -2016,7 +2016,7 @@ PYBIND11_MODULE(_ext, m) {
 
         auto off = py::array(py::buffer_info(nullptr, sizeof(int), py::format_descriptor<int>::value, 1, {len+1}, {sizeof(int)}));
         auto bufoff = off.request();
-        int *ptroff = (int *)realloc(bufoff.ptr, (len+1)*sizeof(int)+1);;
+        int *ptroff = (int *)bufoff.ptr;
         size_t idxe = 0;
         *ptroff = 0;
         ptroff++;