diff --git a/.github/workflows/Documenter.yml b/.github/workflows/Documenter.yml
index 808fc553..6f831f92 100644
--- a/.github/workflows/Documenter.yml
+++ b/.github/workflows/Documenter.yml
@@ -71,6 +71,9 @@ jobs:
           cd docs/doxygen
           doxygen
       - name: Deploy doxygen docs
+        if: >-
+          github.event_name != 'pull_request' ||
+          github.event.pull_request.head.repo.full_name == github.repository
         uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 96694d49..98586575 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -359,3 +359,103 @@ jobs:
         if: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.debug_enabled && always() }}
         uses: mxschmitt/action-tmate@v3
         timeout-minutes: 15
+
+  macos-smoke:
+    name: macos-latest - smoke - Julia 1.11 - ${{ github.event_name }}
+    runs-on: macos-latest
+    env:
+      JULIA_DEPOT_PATH: ~/.julia
+      T8CODE_VERSION: '3.0.1'
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v6
+
+      - name: Enable Julia cache
+        uses: julia-actions/cache@v3
+
+      - name: Enable t8code cache
+        id: cache-t8code
+        uses: actions/cache@v5
+        with:
+          path: ./t8code-local
+          key: ${{ runner.os }}-t8code-${{ env.T8CODE_VERSION }}
+
+      - name: Install Julia
+        uses: julia-actions/setup-julia@v3
+        with:
+          version: '1.11'
+
+      - name: Install dependencies available with Homebrew
+        run: |
+          brew install cmake gcc open-mpi hdf5
+          # Point Open MPI at Homebrew GCC's Fortran compiler
+          GFORTRAN="$(command -v gfortran || true)"
+          if [ -z "$GFORTRAN" ]; then
+              GFORTRAN="$(find "$(brew --prefix gcc)/bin" -name 'gfortran-*' | head -n 1)"
+          fi
+          if [ -z "$GFORTRAN" ]; then
+              echo "gfortran not found" >&2
+              exit 1
+          fi
+          echo "FC=$GFORTRAN" >> "$GITHUB_ENV"
+          echo "OMPI_FC=$GFORTRAN" >> "$GITHUB_ENV"
+
+      - name: Install t8code
+        if: steps.cache-t8code.outputs.cache-hit != 'true'
+        run: |
+          mkdir t8code-local
+          cd t8code-local
+          T8CODE_SOURCE=T8CODE-${T8CODE_VERSION}-Source
+          T8CODE_URL=https://github.com/DLR-AMR/t8code/releases/download
+          curl -L -O "$T8CODE_URL/v${T8CODE_VERSION}/$T8CODE_SOURCE.tar.gz"
+          tar xf "$T8CODE_SOURCE.tar.gz"
+          cmake -S "$T8CODE_SOURCE" -B build \
+                -DCMAKE_C_COMPILER=mpicc \
+                -DCMAKE_CXX_COMPILER=mpicxx \
+                -DCMAKE_Fortran_COMPILER=mpifort \
+                -DCMAKE_BUILD_TYPE=Release \
+                -DCMAKE_INSTALL_PREFIX="$PWD/prefix" \
+                -DT8CODE_BUILD_TESTS=OFF \
+                -DT8CODE_BUILD_TUTORIALS=OFF \
+                -DT8CODE_BUILD_EXAMPLES=OFF \
+                -DT8CODE_BUILD_BENCHMARKS=OFF \
+                -DT8CODE_ENABLE_MPI=ON \
+                -DT8CODE_BUILD_FORTRAN_INTERFACE=ON
+          cmake --build build --parallel 2
+          cmake --install build
+
+      - name: Build
+        run: |
+          cmake -S . -B build \
+                -DCMAKE_INSTALL_PREFIX="$PWD/install" \
+                -DCMAKE_BUILD_TYPE=Release \
+                -DT8CODE_ROOT="$PWD/t8code-local/prefix"
+          cmake --build build --parallel 2
+          cmake --install build
+
+      - name: Run examples
+        run: |
+          mkdir libtrixi-julia
+          cd libtrixi-julia
+          EXAMPLES_DIR=../install/share/libtrixi/LibTrixi.jl/examples
+          cp "$EXAMPLES_DIR/libelixir_t8code2d_euler_tracer_amr.jl" .
+          HDF5_PREFIX="$(brew --prefix hdf5)"
+          MPI_PREFIX="$(brew --prefix open-mpi)"
+          ../install/bin/libtrixi-init-julia .. \
+              --hdf5-library "$HDF5_PREFIX/lib/libhdf5.dylib" \
+              --mpi-library "$MPI_PREFIX/lib/libmpi.dylib" \
+              --t8code-library ../t8code-local/prefix/lib/libt8.dylib \
+              --julia-depot ~/.julia \
+              --skip-precompile \
+              --force
+          mkdir run-c run-f
+          PROJECT_DIR="$PWD"
+          LIBELIXIR_PATH="$PROJECT_DIR/libelixir_t8code2d_euler_tracer_amr.jl"
+          cd run-c
+          ../../build/examples/trixi_controller_t8code_c \
+              "$PROJECT_DIR" "$LIBELIXIR_PATH"
+          cd ../run-f
+          ../../build/examples/trixi_controller_t8code_f \
+              "$PROJECT_DIR" "$LIBELIXIR_PATH"
+        env:
+          LIBTRIXI_DEBUG: all
diff --git a/README.md b/README.md
index 771d1ae0..cc57ae01 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@
 
 ### Prerequisites
 
-Currently, libtrixi is only developed and tested for Linux. Furthermore, the following
+Currently, libtrixi is developed and tested for Linux and (experimentally) for macOS. Furthermore, the following
 software packages need to be made available locally before installing libtrixi:
 * [Julia](https://julialang.org/downloads/platform/) v1.8+
 * C compiler with support for C11 or later (e.g., [gcc](https://gcc.gnu.org/) or [clang](https://clang.llvm.org/))
diff --git a/docs/src/index.md b/docs/src/index.md
index 62f1714c..5ad8376b 100644
--- a/docs/src/index.md
+++ b/docs/src/index.md
@@ -16,7 +16,7 @@
 
 ### Prerequisites
 
-Currently, libtrixi is only developed and tested for Linux. Furthermore, the following
+Currently, libtrixi is developed and tested for Linux and (experimentally) for macOS. Furthermore, the following
 software packages need to be made available locally before installing libtrixi:
 * [Julia](https://julialang.org/downloads/platform/) v1.8+
 * C compiler with support for C11 or later (e.g., [gcc](https://gcc.gnu.org/) or [clang](https://clang.llvm.org/))
diff --git a/examples/trixi_controller_t8code.c b/examples/trixi_controller_t8code.c
index cebaaf30..af2d1981 100644
--- a/examples/trixi_controller_t8code.c
+++ b/examples/trixi_controller_t8code.c
@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <inttypes.h>
 
 #include <t8.h>
 #include <t8_forest/t8_forest_general.h>
@@ -22,7 +23,10 @@ void t8_print_forest_information (t8_forest_t forest)
     global_num_elements = t8_forest_get_global_num_elements (forest);
 
     printf ("\n*** T8code ***  Local number of elements:\t%i\n", local_num_elements);
-    printf ("*** T8code ***  Global number of elements:\t%li\n", global_num_elements);
+
+    // Using PRId64 to print t8_gloidx_t portably across platforms
+    printf ("*** T8code ***  Global number of elements:\t%" PRId64 "\n",
+            global_num_elements);
 }
 
 
diff --git a/utils/libtrixi-init-julia b/utils/libtrixi-init-julia
index a7e0be6f..e1d77aa0 100755
--- a/utils/libtrixi-init-julia
+++ b/utils/libtrixi-init-julia
@@ -53,30 +53,30 @@ optional arguments:
 
     --hdf5-library HDF5_LIBRARY
                     Path to the HDF5 shared library, i.e., something like
-                    'path/to/libhdf5.so'. If empty, Julia will try to figure out the path
-                    automatically. (default: '')
+                    'path/to/libhdf5.so' or 'path/to/libhdf5.dylib'. If empty, Julia
+                    will try to figure out the path automatically. (default: '')
 
     --mpi-library MPI_LIBRARY
                     Path to the MPI C shared library, i.e., something like
-                    'path/to/libmpi.so'. If empty, Julia will try to figure out the path
-                    automatically. (default: '')
+                    'path/to/libmpi.so' or 'path/to/libmpi.dylib'. If empty, Julia will
+                    try to figure out the path automatically. (default: '')
 
     --t8code-library T8CODE_LIBRARY
                     Path to the t8code shared library, i.e., something like
-                    'path/to/libt8.so'. If empty, Julia will try to figure out the path
-                    automatically. (default: '')
+                    'path/to/libt8.so' or 'path/to/libt8.dylib'. If empty, Julia will
+                    try to figure out the path automatically. (default: '')
 
     --p4est-library P4EST_LIBRARY
                     Path to the p4est shared library, i.e., something like
-                    'path/to/libp4est.so'.  If omitted, it will be assumed to be located
-                    next to the t8code library. (default: '\$(dirname \$T8CODE_LIBRARY)/
-                    libp4est.so')
+                    'path/to/libp4est.so' or 'path/to/libp4est.dylib'. If omitted, it
+                    will be assumed to be located next to the t8code library.
+                    (default: '\$(dirname \$T8CODE_LIBRARY)/libp4est.<suffix>')
 
     --sc-library SC_LIBRARY
                     Path to the sc shared library, i.e., something like
-                    'path/to/libsc.so'. If omitted, it will be assumed to be located next
-                    to the t8code library. (default: '\$(dirname \$T8CODE_LIBRARY)/
-                    libsc.so')
+                    'path/to/libsc.so' or 'path/to/libsc.dylib'. If omitted, it will be
+                    assumed to be located next to the t8code library.
+                    (default: '\$(dirname \$T8CODE_LIBRARY)/libsc.<suffix>')
 EOF
 }
 
@@ -171,7 +171,20 @@ julia_exec="$LIBTRIXI_JULIA_EXEC"
 # Save Julia depot path
 julia_depot="$LIBTRIXI_JULIA_DEPOT"
 
-# Check if libhdf5.so was given by the user or try to find it using Julia
+# Determine platform shared library suffix
+case "$(uname -s)" in
+  Linux)
+    shared_library_suffix=so
+    ;;
+  Darwin)
+    shared_library_suffix=dylib
+    ;;
+  *)
+    shared_library_suffix=so
+    ;;
+esac
+
+# Check if libhdf5 was given by the user or try to find it using Julia
 if [ -z "$LIBTRIXI_HDF5_LIBRARY" ]; then
   hdf5_libdir="$($julia_exec -e 'using Libdl; find_library("libhdf5") |> dlpath |> dirname |> println')"
   if [ -z "$hdf5_libdir" ]; then
@@ -180,11 +193,11 @@ if [ -z "$LIBTRIXI_HDF5_LIBRARY" ]; then
 else
   hdf5_libdir="$(dirname $LIBTRIXI_HDF5_LIBRARY)"
 fi
-hdf5_library="$hdf5_libdir/libhdf5.so"
+hdf5_library="$hdf5_libdir/libhdf5.$shared_library_suffix"
 if [ ! -f "$hdf5_library" ]; then
   die "hdf5 library '$hdf5_library' not found" 2
 fi
-hdf5_hl_library="$hdf5_libdir/libhdf5_hl.so"
+hdf5_hl_library="$hdf5_libdir/libhdf5_hl.$shared_library_suffix"
 if [ ! -f "$hdf5_hl_library" ]; then
   die "hdf5 library '$hdf5_hl_library' not found" 2
 fi
@@ -202,7 +215,7 @@ if [ ! -f "$mpi_library" ]; then
   die "MPI library '$mpi_library' not found" 2
 fi
 
-# Check if libt8.so was given by the user or try to find it using Julia
+# Check if libt8 was given by the user or try to find it using Julia
 if [ -z "$LIBTRIXI_T8CODE_LIBRARY" ]; then
   t8code_libdir="$($julia_exec -e 'using Libdl; find_library("libt8") |> dlpath |> dirname |> println')"
   if [ -z "$t8code_libdir" ]; then
@@ -212,31 +225,31 @@ else
   t8code_libdir="$(dirname $LIBTRIXI_T8CODE_LIBRARY)"
 fi
 t8code_libdir_abs="$(cd $t8code_libdir && pwd)"
-t8code_library="$t8code_libdir_abs/libt8.so"
+t8code_library="$t8code_libdir_abs/libt8.$shared_library_suffix"
 if [ ! -f "$t8code_library" ]; then
   die "t8code library '$t8code_library' not found" 2
 fi
 
-# Check if libp4est.so was given by the user or else assume it is next to libt8.so
+# Check if libp4est was given by the user or else assume it is next to libt8
 if [ -z "$LIBTRIXI_P4EST_LIBRARY" ]; then
   p4est_libdir="$t8code_libdir"
 else
   p4est_libdir="$(dirname $LIBTRIXI_P4EST_LIBRARY)"
 fi
 p4est_libdir_abs="$(cd $p4est_libdir && pwd)"
-p4est_library="$p4est_libdir_abs/libp4est.so"
+p4est_library="$p4est_libdir_abs/libp4est.$shared_library_suffix"
 if [ ! -f "$p4est_library" ]; then
   die "p4est library '$p4est_library' not found" 2
 fi
 
-# Check if libsc.so was given by the user or else assume it is next to libt8.so
+# Check if libsc was given by the user or else assume it is next to libt8
 if [ -z "$LIBTRIXI_SC_LIBRARY" ]; then
   sc_libdir="$t8code_libdir"
 else
   sc_libdir="$(dirname $LIBTRIXI_SC_LIBRARY)"
 fi
 sc_libdir_abs="$(cd $sc_libdir && pwd)"
-sc_library="$sc_libdir_abs/libsc.so"
+sc_library="$sc_libdir_abs/libsc.$shared_library_suffix"
 if [ ! -f "$sc_library" ]; then
   die "sc library '$sc_library' not found" 2
 fi