diff --git a/.github/actions/setup-build-env/action.yml b/.github/actions/setup-build-env/action.yml
new file mode 100644
index 00000000000..345b6db8ada
--- /dev/null
+++ b/.github/actions/setup-build-env/action.yml
@@ -0,0 +1,33 @@
+name: Build environment setup
+description: Configure build env for Yosys builds
+runs:
+  using: composite
+  steps:
+    - name: Install Linux Dependencies
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        sudo apt-get update
+        sudo apt-get install gperf build-essential bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev
+
+    - name: Install macOS Dependencies
+      if: runner.os == 'macOS'
+      shell: bash
+      run: |
+        HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1 brew install bison flex gawk libffi pkg-config bash autoconf
+
+    - name: Linux runtime environment
+      if: runner.os == 'Linux'
+      shell: bash
+      run: |
+        echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
+        echo "procs=$(nproc)" >> $GITHUB_ENV
+
+    - name: macOS runtime environment
+      if: runner.os == 'macOS'
+      shell: bash
+      run: |
+        echo "${{ github.workspace }}/.local/bin" >> $GITHUB_PATH
+        echo "$(brew --prefix bison)/bin" >> $GITHUB_PATH
+        echo "$(brew --prefix flex)/bin" >> $GITHUB_PATH
+        echo "procs=$(sysctl -n hw.ncpu)" >> $GITHUB_ENV
diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
new file mode 100644
index 00000000000..5966ec3afdf
--- /dev/null
+++ b/.github/workflows/test-build.yml
@@ -0,0 +1,172 @@
+name: Build and run tests
+
+on: [push, pull_request]
+
+jobs:
+  pre_job:
+    runs-on: ubuntu-latest
+    outputs:
+      should_skip: ${{ steps.skip_check.outputs.should_skip }}
+    steps:
+      - id: skip_check
+        uses: fkirc/skip-duplicate-actions@v5
+        with:
+          paths_ignore: '["**/README.md", "docs/**", "guidelines/**"]'
+          # cancel previous builds if a new commit is pushed
+          cancel_others: 'true'
+          # only run on push *or* pull_request, not both
+          concurrent_skipping: 'same_content_newer'
+
+  build-yosys:
+    name: Reusable build
+    runs-on: ${{ matrix.os }}
+    needs: pre_job
+    if: needs.pre_job.outputs.should_skip != 'true'
+    env:
+      CC: clang
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+      fail-fast: false
+    steps:
+      - name: Checkout Yosys
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Setup environment
+        uses: ./.github/actions/setup-build-env
+
+      - name: Build
+        shell: bash
+        run: |
+          mkdir build
+          cd build
+          make -f ../Makefile config-$CC
+          make -f ../Makefile -j$procs
+
+      - name: Log yosys-config output
+        run: |
+          ./yosys-config || true
+
+      - name: Log yosys-config output
+        run: |
+          ./yosys-config || true
+
+      - name: Compress build
+        shell: bash
+        run: |
+          cd build
+          tar -cvf ../build.tar share/ yosys yosys-*
+
+      - name: Store build artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: build-${{ matrix.os }}
+          path: build.tar
+          retention-days: 1
+
+  test-yosys:
+    name: Run tests
+    runs-on: ${{ matrix.os }}
+    needs: [build-yosys, pre_job]
+    if: needs.pre_job.outputs.should_skip != 'true'
+    env:
+      CC: clang
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+      fail-fast: false
+    steps:
+      - name: Checkout Yosys
+        uses: actions/checkout@v4
+
+      - name: Setup environment
+        uses: ./.github/actions/setup-build-env
+
+      - name: Get iverilog
+        shell: bash
+        run: |
+          git clone https://github.com/steveicarus/iverilog.git
+          cd iverilog
+          echo "IVERILOG_GIT=$(git rev-parse HEAD)" >> $GITHUB_ENV
+
+      - name: Cache iverilog
+        id: cache-iverilog
+        uses: actions/cache@v4
+        with:
+          path: .local/
+          key: ${{ matrix.os }}-${{ env.IVERILOG_GIT }}
+
+      - name: Build iverilog
+        if: steps.cache-iverilog.outputs.cache-hit != 'true'
+        shell: bash
+        run: |
+          mkdir -p ${{ github.workspace }}/.local/
+          cd iverilog
+          autoconf
+          CC=gcc CXX=g++ ./configure --prefix=${{ github.workspace }}/.local
+          make -j$procs
+          make install
+
+      - name: Download build artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: build-${{ matrix.os }}
+
+      - name: Uncompress build
+        shell: bash
+        run:
+          tar -xvf build.tar
+
+      - name: Log yosys-config output
+        run: |
+          ./yosys-config || true
+
+      - name: Run tests
+        shell: bash
+        run: |
+          make -j$procs test TARGETS= EXTRA_TARGETS= CONFIG=$CC
+
+      - name: Report errors
+        if: ${{ failure() }}
+        shell: bash
+        run: |
+          find tests/**/*.err -print -exec cat {} \;
+
+  test-docs:
+    name: Run docs tests
+    runs-on: ${{ matrix.os }}
+    needs: [build-yosys, pre_job]
+    if: needs.pre_job.outputs.should_skip != 'true'
+    env:
+      CC: clang
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+      fail-fast: false
+    steps:
+      - name: Checkout Yosys
+        uses: actions/checkout@v4
+
+      - name: Setup environment
+        uses: ./.github/actions/setup-build-env
+
+      - name: Download build artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: build-${{ matrix.os }}
+
+      - name: Uncompress build
+        shell: bash
+        run:
+          tar -xvf build.tar
+
+      - name: Log yosys-config output
+        run: |
+          ./yosys-config || true
+
+      - name: Run tests
+        shell: bash
+        run: |
+          make -C docs test -j${{ env.procs }}
diff --git a/.github/workflows/test-compile.yml b/.github/workflows/test-compile.yml
new file mode 100644
index 00000000000..375ea7fc54a
--- /dev/null
+++ b/.github/workflows/test-compile.yml
@@ -0,0 +1,79 @@
+name: Compiler testing
+
+on: [push, pull_request]
+
+jobs:
+  pre_job:
+    runs-on: ubuntu-latest
+    outputs:
+      should_skip: ${{ steps.skip_check.outputs.should_skip }}
+    steps:
+      - id: skip_check
+        uses: fkirc/skip-duplicate-actions@v5
+        with:
+          paths_ignore: '["**/README.md", "docs/**", "guidelines/**"]'
+          # cancel previous builds if a new commit is pushed
+          cancel_others: 'true'
+          # only run on push *or* pull_request, not both
+          concurrent_skipping: 'same_content_newer'
+
+  test-compile:
+    runs-on: ${{ matrix.os }}
+    needs: pre_job
+    if: needs.pre_job.outputs.should_skip != 'true'
+    env:
+      CXXFLAGS: ${{ startsWith(matrix.compiler, 'gcc') && '-Wp,-D_GLIBCXX_ASSERTIONS' || ''}}
+      CC_SHORT: ${{ startsWith(matrix.compiler, 'gcc') && 'gcc' || 'clang' }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+        compiler:
+          # oldest supported
+          - 'clang-14'
+          - 'gcc-10'
+          # newest
+          - 'clang'
+          - 'gcc'
+        include:
+          # macOS
+          - os: macos-13
+            compiler: 'clang'
+          # oldest clang not available on ubuntu-latest
+          - os: ubuntu-22.04
+            compiler: 'clang-11'
+      fail-fast: false
+    steps:
+      - name: Checkout Yosys
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+
+      - name: Setup environment
+        uses: ./.github/actions/setup-build-env
+
+      - name: Setup Cpp
+        uses: aminya/setup-cpp@v1
+        with:
+          compiler: ${{ matrix.compiler }}
+
+      - name: Tool versions
+        shell: bash
+        run: |
+          $CC --version
+          $CXX --version
+
+      # minimum standard
+      - name: Build C++11
+        shell: bash
+        run: |
+          make config-$CC_SHORT
+          make -j$procs CXXSTD=c++11 compile-only
+
+      # maximum standard, only on newest compilers
+      - name: Build C++20
+        if: ${{ matrix.compiler == 'clang' || matrix.compiler == 'gcc'}}
+        shell: bash
+        run: |
+          make config-$CC_SHORT
+          make -j$procs CXXSTD=c++20 compile-only
diff --git a/.github/workflows/test-docs.yml b/.github/workflows/test-docs.yml
deleted file mode 100644
index 7b3906c52ca..00000000000
--- a/.github/workflows/test-docs.yml
+++ /dev/null
@@ -1,58 +0,0 @@
-name: Build and test doc code samples
-
-on:
-  pull_request:
-    branches:
-    - main
-
-jobs:
-  pre_job:
-    runs-on: ubuntu-latest
-    outputs:
-      should_skip: ${{ steps.skip_check.outputs.should_skip }}
-    steps:
-      - id: skip_check
-        uses: fkirc/skip-duplicate-actions@v5
-        with:
-          # cancel previous builds if a new commit is pushed
-          cancel_others: 'true'
-          # only run on push *or* pull_request, not both
-          concurrent_skipping: 'same_content_newer'
-
-  test-docs:
-    needs: pre_job
-    if: needs.pre_job.outputs.should_skip != 'true'
-    runs-on: ubuntu-latest
-    steps:
-      - name: Install Dependencies
-        shell: bash
-        run: |
-          sudo apt-get update
-          sudo apt-get install gperf build-essential bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev
-
-      - name: Setup GCC
-        uses: Dup4/actions-setup-gcc@v1
-
-      - name: Runtime environment
-        shell: bash
-        env:
-          WORKSPACE: ${{ github.workspace }}
-        run: |
-          echo "GITHUB_WORKSPACE=`pwd`" >> $GITHUB_ENV
-          echo "$GITHUB_WORKSPACE/.local/bin" >> $GITHUB_PATH
-          echo "procs=$(nproc)" >> $GITHUB_ENV
-
-      - name: Checkout Yosys
-        uses: actions/checkout@v4
-        with:
-         submodules: true
-      - name: Build yosys
-        shell: bash
-        run: |
-          make config-gcc
-          make -j${{ env.procs }}
-
-      - name: Run tests
-        shell: bash
-        run: |
-          make -C docs test -j${{ env.procs }}
diff --git a/.github/workflows/test-linux.yml b/.github/workflows/test-linux.yml
deleted file mode 100644
index 911b3b66e4d..00000000000
--- a/.github/workflows/test-linux.yml
+++ /dev/null
@@ -1,147 +0,0 @@
-name: Build and run tests (Linux)
-
-on: [push, pull_request]
-
-jobs:
-  pre_job:
-    runs-on: ubuntu-latest
-    outputs:
-      should_skip: ${{ steps.skip_check.outputs.should_skip }}
-    steps:
-      - id: skip_check
-        uses: fkirc/skip-duplicate-actions@v5
-        with:
-          paths_ignore: '["**/README.md", "docs/**", "guidelines/**"]'
-          # cancel previous builds if a new commit is pushed
-          cancel_others: 'true'
-          # only run on push *or* pull_request, not both
-          concurrent_skipping: 'same_content_newer'
-
-  test-linux:
-    needs: pre_job
-    if: needs.pre_job.outputs.should_skip != 'true'
-    runs-on: ${{ matrix.os.id }}
-    strategy:
-      matrix:
-        os:
-          - { id: ubuntu-20.04, name: focal }
-        compiler:
-          - 'clang-12'
-          - 'gcc-11'
-        cpp_std:
-          - 'c++11'
-          - 'c++14'
-          - 'c++17'
-          - 'c++20'
-        include:
-          # Limit the older compilers to C++11 mode
-          - os: { id: ubuntu-20.04, name: focal }
-            compiler: 'clang-11'
-            cpp_std: 'c++11'
-          - os: { id: ubuntu-20.04, name: focal }
-            compiler: 'gcc-10'
-            cpp_std: 'c++11'
-      fail-fast: false
-    steps:
-      - name: Install Dependencies
-        shell: bash
-        run: |
-          sudo apt-get update
-          sudo apt-get install gperf build-essential bison flex libreadline-dev gawk tcl-dev libffi-dev git graphviz xdot pkg-config python python3 libboost-system-dev libboost-python-dev libboost-filesystem-dev zlib1g-dev
-
-      - name: Setup GCC
-        if: startsWith(matrix.compiler, 'gcc')
-        shell: bash
-        run: |
-          CXX=${CC/#gcc/g++}
-          sudo apt-add-repository ppa:ubuntu-toolchain-r/test
-          sudo apt-get update
-          sudo apt-get install $CC $CXX
-          echo "CC=$CC" >> $GITHUB_ENV
-          echo "CXX=$CXX" >> $GITHUB_ENV
-          echo "CXXFLAGS=-Wp,-D_GLIBCXX_ASSERTIONS" >> $GITHUB_ENV
-        env:
-          CC: ${{ matrix.compiler }}
-
-      - name: Setup Clang
-        if: startsWith(matrix.compiler, 'clang')
-        shell: bash
-        run: |
-          wget https://apt.llvm.org/llvm-snapshot.gpg.key
-          sudo apt-key add llvm-snapshot.gpg.key
-          rm llvm-snapshot.gpg.key
-          sudo apt-add-repository "deb https://apt.llvm.org/${{ matrix.os.name }}/ llvm-toolchain-${{ matrix.os.name }} main"
-          sudo apt-get update
-          CXX=${CC/#clang/clang++}
-          sudo apt-get install $CC $CXX
-          echo "CC=$CC" >> $GITHUB_ENV
-          echo "CXX=$CXX" >> $GITHUB_ENV
-        env:
-          CC: ${{ matrix.compiler }}
-
-      - name: Runtime environment
-        shell: bash
-        env:
-          WORKSPACE: ${{ github.workspace }}
-        run: |
-          echo "GITHUB_WORKSPACE=`pwd`" >> $GITHUB_ENV
-          echo "$GITHUB_WORKSPACE/.local/bin" >> $GITHUB_PATH
-          echo "procs=$(nproc)" >> $GITHUB_ENV
-
-      - name: Tool versions
-        shell: bash
-        run: |
-          $CC --version
-          $CXX --version
-
-      - name: Checkout Yosys
-        uses: actions/checkout@v4
-        with:
-         submodules: true
-      - name: Get iverilog
-        shell: bash
-        run: |
-          git clone https://github.com/steveicarus/iverilog.git
-          cd iverilog
-          echo "IVERILOG_GIT=$(git rev-parse HEAD)" >> $GITHUB_ENV
-
-      - name: Cache iverilog
-        id: cache-iverilog
-        uses: actions/cache@v4
-        with:
-          path: .local/
-          key: ${{ matrix.os.id }}-${{ env.IVERILOG_GIT }}
-
-      - name: Build iverilog
-        if: steps.cache-iverilog.outputs.cache-hit != 'true'
-        shell: bash
-        run: |
-          mkdir -p $GITHUB_WORKSPACE/.local/
-          cd iverilog
-          autoconf
-          CC=gcc CXX=g++ ./configure --prefix=$GITHUB_WORKSPACE/.local
-          make -j${{ env.procs }}
-          make install
-
-      - name: Build yosys
-        shell: bash
-        run: |
-          make config-${CC%%-*}
-          make -j${{ env.procs }} CXXSTD=${{ matrix.cpp_std }} CC=$CC CXX=$CC LD=$CC
-
-      - name: Store build artifact
-        if: (matrix.cpp_std == 'c++11') && (matrix.compiler == 'gcc-11')
-        uses: actions/upload-artifact@v4
-        with:
-          name: compiled-yosys
-          path: yosys
-
-      - name: Run tests
-        if: (matrix.cpp_std == 'c++11') && (matrix.compiler == 'gcc-11')
-        shell: bash
-        run: |
-          make -j${{ env.procs }} test CXXSTD=${{ matrix.cpp_std }} CC=$CC CXX=$CC LD=$CC
-
-      - name: Log yosys-config output
-        run: |
-          ./yosys-config || true
diff --git a/.github/workflows/test-macos.yml b/.github/workflows/test-macos.yml
deleted file mode 100644
index cbba8adbd66..00000000000
--- a/.github/workflows/test-macos.yml
+++ /dev/null
@@ -1,92 +0,0 @@
-name: Build and run tests (macOS)
-
-on: [push, pull_request]
-
-jobs:
-  pre_job:
-    runs-on: ubuntu-latest
-    outputs:
-      should_skip: ${{ steps.skip_check.outputs.should_skip }}
-    steps:
-      - id: skip_check
-        uses: fkirc/skip-duplicate-actions@v5
-        with:
-          paths_ignore: '["**/README.md", "docs/**", "guidelines/**"]'
-          # cancel previous builds if a new commit is pushed
-          cancel_others: 'true'
-          # only run on push *or* pull_request, not both
-          concurrent_skipping: 'same_content_newer'
-
-  test-macos:
-    needs: pre_job
-    if: needs.pre_job.outputs.should_skip != 'true'
-    runs-on: ${{ matrix.os.id }}
-    strategy:
-      matrix:
-        os:
-          - { id: macos-13, name: 'Ventura' }
-        cpp_std:
-          - 'c++11'
-          - 'c++17'
-      fail-fast: false
-    steps:
-      - name: Install Dependencies
-        run: |
-          HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1 brew install bison flex gawk libffi pkg-config bash
-
-      - name: Runtime environment
-        shell: bash
-        env:
-          WORKSPACE: ${{ github.workspace }}
-        run: |
-          echo "GITHUB_WORKSPACE=`pwd`" >> $GITHUB_ENV
-          echo "$GITHUB_WORKSPACE/.local/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix bison)/bin" >> $GITHUB_PATH
-          echo "$(brew --prefix flex)/bin" >> $GITHUB_PATH
-          echo "procs=$(sysctl -n hw.ncpu)" >> $GITHUB_ENV
-
-      - name: Tool versions
-        shell: bash
-        run: |
-          cc --version
-
-      - name: Checkout Yosys
-        uses: actions/checkout@v4
-        with:
-         submodules: true
-      - name: Get iverilog
-        shell: bash
-        run: |
-          git clone https://github.com/steveicarus/iverilog.git
-          cd iverilog
-          echo "IVERILOG_GIT=$(git rev-parse HEAD)" >> $GITHUB_ENV
-
-      - name: Cache iverilog
-        id: cache-iverilog
-        uses: actions/cache@v4
-        with:
-          path: .local/
-          key: ${{ matrix.os.id }}-${{ env.IVERILOG_GIT }}
-
-      - name: Build iverilog
-        if: steps.cache-iverilog.outputs.cache-hit != 'true'
-        shell: bash
-        run: |
-          mkdir -p $GITHUB_WORKSPACE/.local/
-          cd iverilog
-          autoconf
-          CC=gcc CXX=g++ ./configure --prefix=$GITHUB_WORKSPACE/.local/
-          make -j${{ env.procs }}
-          make install
-
-      - name: Build yosys
-        shell: bash
-        run: |
-          make config-clang
-          make -j${{ env.procs }} CXXSTD=${{ matrix.cpp_std }} CC=cc CXX=cc LD=cc
-
-      - name: Run tests
-        if: matrix.cpp_std == 'c++11'
-        shell: bash
-        run: |
-          make -j${{ env.procs }} test CXXSTD=${{ matrix.cpp_std }} CC=cc CXX=cc LD=cc
diff --git a/.gitignore b/.gitignore
index b4797d63884..6f3e521d62e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -45,4 +45,3 @@ __pycache__
 /tests/unit/bintest/
 /tests/unit/objtest/
 /tests/ystests
-/build
diff --git a/Makefile b/Makefile
index e2354853f17..120214ced04 100644
--- a/Makefile
+++ b/Makefile
@@ -687,6 +687,12 @@ top-all: $(TARGETS) $(EXTRA_TARGETS)
 	@echo "  Build successful."
 	@echo ""
 
+.PHONY: compile-only
+compile-only: $(OBJS) $(GENFILES) $(EXTRA_TARGETS)
+	@echo ""
+	@echo "  Compile successful."
+	@echo ""
+
 $(PROGRAM_PREFIX)yosys$(EXE): $(OBJS)
 	$(P) $(CXX) -o $(PROGRAM_PREFIX)yosys$(EXE) $(EXE_LINKFLAGS) $(LINKFLAGS) $(OBJS) $(LIBS) $(LIBS_VERIFIC)
 
@@ -975,7 +981,9 @@ clean:
 	rm -rf vloghtb/Makefile vloghtb/refdat vloghtb/rtl vloghtb/scripts vloghtb/spec vloghtb/check_yosys vloghtb/vloghammer_tb.tar.bz2 vloghtb/temp vloghtb/log_test_*
 	rm -f tests/svinterfaces/*.log_stdout tests/svinterfaces/*.log_stderr tests/svinterfaces/dut_result.txt tests/svinterfaces/reference_result.txt tests/svinterfaces/a.out tests/svinterfaces/*_syn.v tests/svinterfaces/*.diff
 	rm -f  tests/tools/cmp_tbdata
-	$(MAKE) -C docs clean
+	-$(MAKE) -C docs clean
+	-$(MAKE) -C docs/images clean
+	rm -rf docs/source/cmd docs/util/__pycache__
 
 clean-abc:
 	$(MAKE) -C abc DEP= clean
diff --git a/docs/tests/macro_commands.py b/docs/tests/macro_commands.py
index faf2baa530b..7ceb092d867 100755
--- a/docs/tests/macro_commands.py
+++ b/docs/tests/macro_commands.py
@@ -10,13 +10,14 @@
 logging.basicConfig(level=logging.INFO)
 
 # expects __file__ = yosys/docs/tests/macro_commands.py
-TESTS_DIR = Path(__file__).parent
+TESTS_DIR = Path(__file__).parent.absolute()
 ROOT_DIR = TESTS_DIR.parent.parent
+logging.log(logging.INFO, f"Using {ROOT_DIR} as root directory")
 THIS_FILE = (TESTS_DIR / "macro_commands.py").relative_to(ROOT_DIR)
 MACRO_SOURCE = TESTS_DIR.parent / "source" / "code_examples" / "macro_commands"
 assert MACRO_SOURCE.exists(), f"can't find macro_commands in {MACRO_SOURCE}"
 
-YOSYS = TESTS_DIR.parent.parent / "yosys"
+YOSYS = ROOT_DIR / "yosys"
 assert YOSYS.exists(), f"can't find yosys executable in {YOSYS}"
 
 raise_error = False