jdemel · Sep 12, 2026 · Sep 12, 2026 · Sep 13, 2026 · Sep 13, 2026 · Sep 13, 2026
diff --git a/.github/workflows/android_build.yml b/.github/workflows/android_build.yml
@@ -35,7 +35,7 @@ jobs:
 
       # All dependencies
       - name: Install dependencies
-        run: sudo DEBIAN_FRONTEND=noninteractive apt-get install -y cmake python3-mako curl
+        run: sudo DEBIAN_FRONTEND=noninteractive apt-get install -y cmake python3-mako libgtest-dev libfmt-dev curl
 
       - name: Install sccache
         shell: bash
@@ -60,6 +60,33 @@ jobs:
       - name: Install Android NDK
         run: $GITHUB_WORKSPACE/android-sdk-linux/cmdline-tools/bin/sdkmanager --sdk_root=$GITHUB_WORKSPACE/android-sdk-linux --install "ndk;27.2.12479018" --channel=3
 
+      # Build fmt for the Android target. The host libfmt-dev package cannot
+      # be used by the Android toolchain.
+      - name: Install fmt and GoogleTest for Android
+        shell: bash
+        run: |
+          git clone --depth 1 --branch 12.1.0 https://github.com/fmtlib/fmt.git fmt-src
+          cmake -S fmt-src -B fmt-build \
+            -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/android-sdk-linux/ndk/27.2.12479018/build/cmake/android.toolchain.cmake \
+            -DANDROID_ABI=${{ matrix.arch.name }} \
+            -DANDROID_PLATFORM=android-34 \
+            -DFMT_TEST=OFF \
+            -DFMT_DOC=OFF \
+            -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/android-fmt
+          cmake --build fmt-build -j $(nproc)
+          cmake --install fmt-build
+
+          git clone --depth 1 --branch v1.18.0 https://github.com/google/googletest.git gtest-src
+          cmake -S gtest-src -B gtest-build \
+            -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/android-sdk-linux/ndk/27.2.12479018/build/cmake/android.toolchain.cmake \
+            -DANDROID_ABI=${{ matrix.arch.name }} \
+            -DANDROID_PLATFORM=android-34 \
+            -DBUILD_GMOCK=OFF \
+            -DINSTALL_GTEST=ON \
+            -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/android-gtest
+          cmake --build gtest-build -j $(nproc)
+          cmake --install gtest-build
+
       # Setup build directory
       - name: Setup ${{ matrix.arch.name }}
         shell: bash
@@ -70,6 +97,7 @@ jobs:
           -DCMAKE_TOOLCHAIN_FILE=$GITHUB_WORKSPACE/android-sdk-linux/ndk/27.2.12479018/build/cmake/android.toolchain.cmake \
           -DANDROID_ABI=${{ matrix.arch.name }} \
           -DANDROID_PLATFORM=android-34 \
+          -DCMAKE_PREFIX_PATH="$GITHUB_WORKSPACE/android-fmt;$GITHUB_WORKSPACE/android-gtest" \
           ${{ steps.enable_sccache.outputs.CXX_LAUNCHER }} \
           ${{ steps.enable_sccache.outputs.C_LAUNCHER }}
 

diff --git a/.github/workflows/run-tests-rvv.yml b/.github/workflows/run-tests-rvv.yml
@@ -19,8 +19,14 @@ jobs:
           submodules: "recursive"
       - name: Install packages
         run: |
+          sudo dpkg --add-architecture riscv64
+          sudo tee /etc/apt/sources.list.d/riscv64.list > /dev/null <<'EOF'
+          deb [arch=riscv64] http://ports.ubuntu.com/ubuntu-ports noble main universe
+          deb [arch=riscv64] http://ports.ubuntu.com/ubuntu-ports noble-updates main universe
+          deb [arch=riscv64] http://ports.ubuntu.com/ubuntu-ports noble-security main universe
+          EOF
           sudo DEBIAN_FRONTEND=noninteractive apt-get update -q -y
-          sudo DEBIAN_FRONTEND=noninteractive apt-get install -y python3-mako cmake qemu-user-static g++-14-riscv64-linux-gnu clang-18 curl
+          sudo DEBIAN_FRONTEND=noninteractive apt-get install -y python3-mako libgtest-dev:riscv64 libfmt-dev:riscv64 cmake qemu-user-static g++-14-riscv64-linux-gnu clang-18 curl
           sudo scripts/ci/install_sccache.bash
           mkdir build
           cd build

diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
@@ -268,9 +268,11 @@ jobs:
         with:
           python-version: "3.12"
       - name: dependencies
-        run: pip install mako
+        run: |
+          pip install mako
+          vcpkg install fmt:x64-windows gtest:x64-windows
       - name: configure
-        run: mkdir build && cd build && cmake -DPython3_FIND_REGISTRY=NEVER ..
+        run: mkdir build && cd build && cmake -DPython3_FIND_REGISTRY=NEVER -DCMAKE_TOOLCHAIN_FILE=C:/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows ..
       - name: build
         run: cmake --build build --config Release --target INSTALL -j4
       - name: test
@@ -322,7 +324,7 @@ jobs:
         with:
           submodules: "recursive"
       - name: dependencies
-        run: pip3 install --break-system-packages mako && brew install orc
+        run: pip3 install --break-system-packages mako && brew install orc fmt
       - name: configure
         run: mkdir build && cd build && cmake -DCMAKE_C_FLAGS="-Werror" -DCMAKE_CXX_FLAGS="-Werror" -DBUILD_EXECUTABLE=ON ..
       - name: build

diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -48,7 +48,7 @@ if(CMAKE_C_COMPILER_ID MATCHES "Clang|GNU")
 endif()
 
 list(INSERT CMAKE_MODULE_PATH 0 ${CMAKE_CURRENT_SOURCE_DIR}/cmake/Modules
-) #location for custom "Modules"
+)#location for custom "Modules"
 
 include(CMakeDependentOption)
 include(VolkBuildTypes)
@@ -94,7 +94,7 @@ set(CROSSCOMPILE_MULTILIB
 
 if(MSVC)
     add_definitions(-D_USE_MATH_DEFINES
-    ) #enables math constants on all supported versions of MSVC
+    )#enables math constants on all supported versions of MSVC
     add_compile_options(/W1) #reduce warnings
     add_compile_options(/wo4309)
     add_compile_options(/wd4752)
@@ -105,17 +105,22 @@ endif(MSVC)
 ########################################################################
 # Build options
 ########################################################################
-set(VOLK_STATIC_DISPATCH "" CACHE STRING
-    "Static dispatch to a specific machine (e.g. neonv8). Empty means dynamic dispatch.")
+set(VOLK_STATIC_DISPATCH
+    ""
+    CACHE
+        STRING
+        "Static dispatch to a specific machine (e.g. neonv8). Empty means dynamic dispatch."
+)
 option(ENABLE_UTILITY_APPS "Enable utility apps" ON)
 option(ENABLE_TESTING "Enable QA testing" ON)
 option(ENABLE_MODTOOL "Enable volk_modtool python utility" ON)
-cmake_dependent_option(ENABLE_PROFILING "Launch system profiler after build" OFF "ENABLE_UTILITY_APPS;NOT CMAKE_CROSSCOMPILING" OFF)
+cmake_dependent_option(ENABLE_PROFILING "Launch system profiler after build" OFF
+                       "ENABLE_UTILITY_APPS;NOT CMAKE_CROSSCOMPILING" OFF)
 
 ########################################################################
 # Print summary of options
 ########################################################################
-if (VOLK_STATIC_DISPATCH)
+if(VOLK_STATIC_DISPATCH)
     message(STATUS "Using static dispatch for: ${VOLK_STATIC_DISPATCH}")
 else()
     message(STATUS "Using dynamic dispatch.")
@@ -125,15 +130,15 @@ if(ENABLE_UTILITY_APPS)
     message(STATUS "Utility apps enabled.")
 endif()
 
-if (ENABLE_TESTING)
+if(ENABLE_TESTING)
     message(STATUS "Testing enabled.")
 endif()
 
-if (ENABLE_MODTOOL)
+if(ENABLE_MODTOOL)
     message(STATUS "volk_modtool python utility enabled.")
 endif()
 
-if (ENABLE_PROFILING)
+if(ENABLE_PROFILING)
     message(STATUS "Launch system profiler after build enabled.")
 endif()
 
@@ -143,8 +148,10 @@ endif()
 
 # cpu_features - only needed for dynamic dispatch (runtime CPU detection)
 if(NOT VOLK_STATIC_DISPATCH)
-    if(CMAKE_SYSTEM_PROCESSOR MATCHES
-       "(^mips)|(^arm)|(^aarch64)|(x86_64)|(AMD64|amd64)|(^i.86$)|(^powerpc)|(^ppc)|(^riscv)")
+    if(CMAKE_SYSTEM_PROCESSOR
+       MATCHES
+       "(^mips)|(^arm)|(^aarch64)|(x86_64)|(AMD64|amd64)|(^i.86$)|(^powerpc)|(^ppc)|(^riscv)"
+    )
         option(VOLK_CPU_FEATURES "Volk uses cpu_features" ON)
     else()
         option(VOLK_CPU_FEATURES "Volk uses cpu_features" OFF)
@@ -243,11 +250,8 @@ if(${CMAKE_BUILD_TYPE} STREQUAL "Coverage")
     # modifications as done in the past for GNU Radio.
     include(CodeCoverage)
     append_coverage_compiler_flags()
-    setup_target_for_coverage_gcovr_html(
-        NAME coverage
-        EXECUTABLE "ctest"  
-        DEPENDENCIES volk_profile
-        )
+    setup_target_for_coverage_gcovr_html(NAME coverage EXECUTABLE "ctest" DEPENDENCIES
+                                         volk_profile)
 endif()
 
 ########################################################################
@@ -303,8 +307,8 @@ set(VOLK_INSTALL_HEADERS
 
 if(NOT VOLK_STATIC_DISPATCH)
     list(APPEND VOLK_INSTALL_HEADERS
-        ${CMAKE_CURRENT_SOURCE_DIR}/include/volk/volk_prefs.h
-        ${CMAKE_CURRENT_BINARY_DIR}/include/volk/volk_cpu.h)
+         ${CMAKE_CURRENT_SOURCE_DIR}/include/volk/volk_prefs.h
+         ${CMAKE_CURRENT_BINARY_DIR}/include/volk/volk_cpu.h)
 endif()
 
 install(
@@ -384,12 +388,10 @@ if(ENABLE_TESTING OR ENABLE_UTILITY_APPS)
     if(NOT ENABLE_STATIC_LIBS)
         find_package(fmt QUIET)
     endif()
-    if(NOT fmt_FOUND)
-        if(ENABLE_STATIC_LIBS)
-            message(STATUS "Static build: using FetchContent to build fmt as static library ...")
-        else()
-            message(STATUS "fmt package not found. Using FetchContent to download ...")
-        endif()
+    if(ENABLE_STATIC_LIBS AND NOT fmt_FOUND)
+        message(
+            STATUS "Static build: using FetchContent to build fmt as static library ...")
+
         include(FetchContent)
         FetchContent_Declare(
             fmt

diff --git a/appveyor.yml b/appveyor.yml
@@ -5,15 +5,15 @@
 #
 # SPDX-License-Identifier: LGPL-3.0-or-later
 #
-image: Visual Studio 2022
+image: Visual Studio 2026
 cache:
   - packages -> appveyor.yml
 environment:
   environment:
   matrix:
-    - job_name: VS 17 2022 / python 3.12
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2022
-      CMAKE_GENERATOR: Visual Studio 17 2022
+    - job_name: VS 2026 / python 3.12
+      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2026
+      CMAKE_GENERATOR: Ninja
       PYTHON: "C:\\Python312"
 
 install:
@@ -25,11 +25,12 @@ install:
       print(sys.platform, platform.machine(), struct.calcsize('P')*8)"
     - pip --version
     - pip install mako
+    - C:\Tools\vcpkg\vcpkg.exe install fmt:x64-windows gtest:x64-windows
 before_build:
     - git submodule update --init --recursive
-    - cmake -G "%CMAKE_GENERATOR%" -A x64 -DCMAKE_BUILD_TYPE:STRING=Release -DENABLE_ORC:BOOL=OFF -DENABLE_TESTING:BOOL=ON -DPython3_FIND_REGISTRY=NEVER .
+    - cmake -G "%CMAKE_GENERATOR%" -DCMAKE_BUILD_TYPE:STRING=Release -DENABLE_ORC:BOOL=OFF -DENABLE_TESTING:BOOL=ON -DPython3_FIND_REGISTRY=NEVER -DCMAKE_TOOLCHAIN_FILE=C:/Tools/vcpkg/scripts/buildsystems/vcpkg.cmake -DVCPKG_TARGET_TRIPLET=x64-windows .
 build_script:
-    - cmake --build . --config Release --target INSTALL
+    - cmake --build . --config Release --target install
 test_script:
     - ctest -V --output-on-failure -C Release
 after_test:

diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
@@ -32,6 +32,11 @@ target_link_libraries(volk_tests
 )
 
 include(GoogleTest)
+if(WIN32)
+  # Windows cannot run volk_tests during the build because its dependent DLLs
+  # are not available from the test executable's build directory yet.
+  set(CMAKE_GTEST_DISCOVER_TESTS_DISCOVERY_MODE PRE_TEST)
+endif()
 gtest_discover_tests(volk_tests)