diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 70eae62..f36be62 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,6 +25,12 @@ jobs:
         shell: pwsh
         run: ./common/verify-encoding.ps1
 
+      - name: Cache artifacts
+        uses: actions/cache@v4
+        with:
+          path: artifacts
+          key: linux.x86-64
+
       # Build:
       - name: Install
         shell: pwsh
@@ -55,6 +61,12 @@ jobs:
         shell: pwsh
         run: ./common/verify-encoding.ps1
 
+      - name: Cache artifacts
+        uses: actions/cache@v4
+        with:
+          path: artifacts
+          key: macos.x86-64
+
       # Build:
       - name: Install
         shell: pwsh
@@ -85,6 +97,12 @@ jobs:
         shell: pwsh
         run: ./common/verify-encoding.ps1
 
+      - name: Cache artifacts
+        uses: actions/cache@v4
+        with:
+          path: artifacts
+          key: windows.x86-64
+
       # Build:
       - name: Build
         shell: pwsh
diff --git a/common/Test-UpToDate.ps1 b/common/Test-UpToDate.ps1
new file mode 100644
index 0000000..d9e9454
--- /dev/null
+++ b/common/Test-UpToDate.ps1
@@ -0,0 +1,27 @@
+param (
+    [string] $RepoDirectory = "$PSScriptRoot/../td",
+    [string] $ArtifactsDirectory = "$PSScriptRoot/../artifacts",
+    [switch] $GenerateCheckResult
+)
+
+$ErrorActionPreference = 'Stop'
+Set-StrictMode -Version Latest
+
+$resultFile = "$ArtifactsDirectory/artifact.json"
+$inputs = [pscustomobject] @{
+    $InputCommitHash = (git --git-dir=$RepoDirectory/.git rev-parse HEAD)
+}
+
+if ($GenerateCheckResult) {
+    $inputs | ConvertTo-Json | Set-Content $resultFile
+    Write-Host "Result cache file generated: `"$resultFile`"."
+    return $true
+} elseif (Test-Path $resultFile) {
+    $result = Get-Content $resultFile | ConvertFrom-Json
+    $upToDate = $result.InputCommitHash -eq $inputs.InputCommitHash
+    Write-Host "Cache found: cached commit hash is $($result.InputCommitHash), current commit hash is $($inputs.InputCommitHash). Up to date: $upToDate."
+    return $upToDate
+} else {
+    Write-Host "Last result cache file not found: `"$resultFile`"."
+    return $false
+}
diff --git a/linux/build.ps1 b/linux/build.ps1
index a12755b..1d7fadd 100644
--- a/linux/build.ps1
+++ b/linux/build.ps1
@@ -1,54 +1,62 @@
 param (
     [string] $td = "$PSScriptRoot/../td",
-    [string] $InstallPrefix = "$PSScriptRoot/../build/install"
+    [string] $InstallPrefix = "$PSScriptRoot/../build/install",
+    [string] $CheckUpToDateScript = "$PSScriptRoot/../common/Test-UpToDate.ps1",
+    [switch] $SkipUpToDateCheck
 )
 
 $ErrorActionPreference = 'Stop'
 Set-StrictMode -Version Latest
 
-if (-not (Test-Path $td/build)) {
-    New-Item -Type Directory $td/build
-}
-
-Push-Location $td/build
-try {
-    $cmakeArguments = @(
-        '-DCMAKE_BUILD_TYPE=Release'
-        "-DCMAKE_INSTALL_PREFIX:PATH=$InstallPrefix"
-        '..'
-    )
-    $cmakePrepareCrossCompilingArguments = @(
-        '--build'
-        '.'
-        '--target', 'prepare_cross_compiling'
-    )
-    $cmakeBuildArguments = @(
-        '--build'
-        '.'
-        '--target', 'install'
-    )
-
-    cmake @cmakeArguments
-    if (!$?) {
-        throw 'Cannot execute cmake'
+if ($SkipUpToDateCheck -or !$(& $CheckUpToDateScript)) {
+    if (-not (Test-Path $td/build)) {
+        New-Item -Type Directory $td/build
     }
 
-    cmake @cmakePrepareCrossCompilingArguments
-    if (!$?) {
-        throw 'Cannot execute cmake --build --target prepare_cross_compiling'
-    }
+    Push-Location $td/build
+    try {
+        $cmakeArguments = @(
+            '-DCMAKE_BUILD_TYPE=Release'
+            "-DCMAKE_INSTALL_PREFIX:PATH=$InstallPrefix"
+            '..'
+        )
+        $cmakePrepareCrossCompilingArguments = @(
+            '--build'
+            '.'
+            '--target', 'prepare_cross_compiling'
+        )
+        $cmakeBuildArguments = @(
+            '--build'
+            '.'
+            '--target', 'install'
+        )
 
-    Set-Location ..
-    php SplitSource.php
-    if (!$?) {
-        throw 'Cannot execute php SplitSource.php'
-    }
+        cmake @cmakeArguments
+        if (!$?) {
+            throw 'Cannot execute cmake'
+        }
+
+        cmake @cmakePrepareCrossCompilingArguments
+        if (!$?) {
+            throw 'Cannot execute cmake --build --target prepare_cross_compiling'
+        }
+
+        Set-Location ..
+        php SplitSource.php
+        if (!$?) {
+            throw 'Cannot execute php SplitSource.php'
+        }
+
+        Set-Location build
+        cmake @cmakeBuildArguments
+        if (!$?) {
+            throw 'Cannot execute cmake --build --target install'
+        }
 
-    Set-Location build
-    cmake @cmakeBuildArguments
-    if (!$?) {
-        throw 'Cannot execute cmake --build --target install'
+        & $CheckUpToDateScript -GenerateCheckResult
+    } finally {
+        Pop-Location
     }
-} finally {
-    Pop-Location
+} else {
+    Write-Host 'The build result is up to date.'
 }
diff --git a/macos/build.ps1 b/macos/build.ps1
index 90c0396..edcdafc 100644
--- a/macos/build.ps1
+++ b/macos/build.ps1
@@ -1,35 +1,41 @@
 param (
-    [string] $td = "$PSScriptRoot/../td"
+    [string] $td = "$PSScriptRoot/../td",
+    [string] $CheckUpToDateScript = "$PSScriptRoot/../common/Test-UpToDate.ps1",
+    [switch] $SkipUpToDateCheck
 )
 
 $ErrorActionPreference = 'Stop'
 Set-StrictMode -Version Latest
 
-if (-not (Test-Path $td/build)) {
-    New-Item -Type Directory $td/build
-}
+if ($SkipUpToDateCheck -or !$(& $CheckUpToDateScript)) {
+    if (-not (Test-Path $td/build)) {
+        New-Item -Type Directory $td/build
+    }
 
-Push-Location $td/build
-try {
-    $cmakeArguments = @(
-        '-DCMAKE_BUILD_TYPE=Release'
-        '-DOPENSSL_ROOT_DIR=/usr/local/opt/openssl/'
-        '..'
-    )
-    $cmakeBuildArguments = @(
-        '--build'
-        '.'
-    )
+    Push-Location $td/build
+    try {
+        $cmakeArguments = @(
+            '-DCMAKE_BUILD_TYPE=Release'
+            '-DOPENSSL_ROOT_DIR=/usr/local/opt/openssl/'
+            '..'
+        )
+        $cmakeBuildArguments = @(
+            '--build'
+            '.'
+        )
 
-    cmake @cmakeArguments
-    if (!$?) {
-        throw 'Cannot execute cmake'
-    }
+        cmake @cmakeArguments
+        if (!$?) {
+            throw 'Cannot execute cmake'
+        }
 
-    cmake @cmakeBuildArguments
-    if (!$?) {
-        throw 'Cannot execute cmake --build'
+        cmake @cmakeBuildArguments
+        if (!$?) {
+            throw 'Cannot execute cmake --build'
+        }
+    } finally {
+        Pop-Location
     }
-} finally {
-    Pop-Location
+} else {
+    Write-Host 'The build result is up to date.'
 }
diff --git a/windows/build.ps1 b/windows/build.ps1
index 5cd53ed..b8be2af 100644
--- a/windows/build.ps1
+++ b/windows/build.ps1
@@ -1,54 +1,60 @@
 param (
     [string] $td = "$PSScriptRoot/../td",
     [string] $Platform = 'x64-windows',
-    [Parameter(Mandatory = $true)] [string] $VcpkgToolchain
+    [Parameter(Mandatory = $true)] [string] $VcpkgToolchain,
+    [string] $CheckUpToDateScript = "$PSScriptRoot/../common/Test-UpToDate.ps1",
+    [switch] $SkipUpToDateCheck
 )
 
 $ErrorActionPreference = 'Stop'
 Set-StrictMode -Version Latest
 
-if (-not (Test-Path $td/build)) {
-    New-Item -Type Directory $td/build
-}
+if ($SkipUpToDateCheck -or !$(& $CheckUpToDateScript)) {
+    if (-not (Test-Path $td/build)) {
+        New-Item -Type Directory $td/build
+    }
 
-Push-Location $td/build
-try {
-    $vcpkgArguments = @(
-        'install'
-        "gperf:$platform"
-        "openssl:$platform"
-        "zlib:$platform"
-    )
-    $cmakeArguments = @(
-        "-DCMAKE_TOOLCHAIN_FILE=$VcpkgToolchain"
-        '-DCMAKE_DISABLE_FIND_PACKAGE_Readline=TRUE' # workaround for #76
-        '..'
-    )
-    $cmakeBuildArguments = @(
-        '--build'
-        '.'
-        '--config'
-        'Release'
-    )
+    Push-Location $td/build
+    try {
+        $vcpkgArguments = @(
+            'install'
+            "gperf:$platform"
+            "openssl:$platform"
+            "zlib:$platform"
+        )
+        $cmakeArguments = @(
+            "-DCMAKE_TOOLCHAIN_FILE=$VcpkgToolchain"
+            '-DCMAKE_DISABLE_FIND_PACKAGE_Readline=TRUE' # workaround for #76
+            '..'
+        )
+        $cmakeBuildArguments = @(
+            '--build'
+            '.'
+            '--config'
+            'Release'
+        )
 
-    if ($Platform -eq 'x64-windows') {
-        $cmakeArguments += @('-A', 'X64')
-    }
+        if ($Platform -eq 'x64-windows') {
+            $cmakeArguments += @('-A', 'X64')
+        }
 
-    vcpkg @vcpkgArguments
-    if (!$?) {
-        throw 'Cannot execute vcpkg'
-    }
+        vcpkg @vcpkgArguments
+        if (!$?) {
+            throw 'Cannot execute vcpkg'
+        }
 
-    cmake @cmakeArguments
-    if (!$?) {
-        throw 'Cannot execute cmake'
-    }
+        cmake @cmakeArguments
+        if (!$?) {
+            throw 'Cannot execute cmake'
+        }
 
-    cmake @cmakeBuildArguments
-    if (!$?) {
-        throw 'Cannot execute cmake --build'
+        cmake @cmakeBuildArguments
+        if (!$?) {
+            throw 'Cannot execute cmake --build'
+        }
+    } finally {
+        Pop-Location
     }
-} finally {
-    Pop-Location
+} else {
+    Write-Host 'The build result is up to date.'
 }