diff --git a/src/Building/Build.php b/src/Building/Build.php
index 2325f8e2..14fd88ca 100644
--- a/src/Building/Build.php
+++ b/src/Building/Build.php
@@ -5,6 +5,7 @@
 namespace Php\Pie\Building;
 
 use Php\Pie\Downloading\DownloadedPackage;
+use Php\Pie\Platform\TargetPlatform;
 use Symfony\Component\Console\Output\OutputInterface;
 
 /** @internal This is not public API for PIE, so should not be depended upon unless you accept the risk of BC breaks */
@@ -13,6 +14,7 @@ interface Build
     /** @param list<non-empty-string> $configureOptions */
     public function __invoke(
         DownloadedPackage $downloadedPackage,
+        TargetPlatform $targetPlatform,
         array $configureOptions,
         OutputInterface $output,
     ): void;
diff --git a/src/Building/UnixBuild.php b/src/Building/UnixBuild.php
index 8a8816a6..61c42c5d 100644
--- a/src/Building/UnixBuild.php
+++ b/src/Building/UnixBuild.php
@@ -5,6 +5,7 @@
 namespace Php\Pie\Building;
 
 use Php\Pie\Downloading\DownloadedPackage;
+use Php\Pie\Platform\TargetPlatform;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Process\Process;
 
@@ -19,12 +20,18 @@ final class UnixBuild implements Build
     /** {@inheritDoc} */
     public function __invoke(
         DownloadedPackage $downloadedPackage,
+        TargetPlatform $targetPlatform,
         array $configureOptions,
         OutputInterface $output,
     ): void {
         $this->phpize($downloadedPackage);
         $output->writeln('<info>phpize complete</info>.');
 
+        $phpConfigPath = $targetPlatform->phpBinaryPath->phpConfigPath();
+        if ($phpConfigPath !== null) {
+            $configureOptions[] = '--with-php-config=' . $phpConfigPath;
+        }
+
         $this->configure($downloadedPackage, $configureOptions);
         $optionsOutput = count($configureOptions) ? ' with options: ' . implode(' ', $configureOptions) : '.';
         $output->writeln('<info>Configure complete</info>' . $optionsOutput);
diff --git a/src/Building/WindowsBuild.php b/src/Building/WindowsBuild.php
index 6f430809..3e743e39 100644
--- a/src/Building/WindowsBuild.php
+++ b/src/Building/WindowsBuild.php
@@ -5,6 +5,7 @@
 namespace Php\Pie\Building;
 
 use Php\Pie\Downloading\DownloadedPackage;
+use Php\Pie\Platform\TargetPlatform;
 use Symfony\Component\Console\Output\OutputInterface;
 
 /** @internal This is not public API for PIE, so should not be depended upon unless you accept the risk of BC breaks */
@@ -13,6 +14,7 @@ final class WindowsBuild implements Build
     /** {@inheritDoc} */
     public function __invoke(
         DownloadedPackage $downloadedPackage,
+        TargetPlatform $targetPlatform,
         array $configureOptions,
         OutputInterface $output,
     ): void {
diff --git a/src/Command/BuildCommand.php b/src/Command/BuildCommand.php
index 607c5b9b..2cc03774 100644
--- a/src/Command/BuildCommand.php
+++ b/src/Command/BuildCommand.php
@@ -51,7 +51,7 @@ public function execute(InputInterface $input, OutputInterface $output): int
 
         $configureOptionsValues = CommandHelper::processConfigureOptionsFromInput($downloadedPackage->package, $input);
 
-        ($this->build)($downloadedPackage, $configureOptionsValues, $output);
+        ($this->build)($downloadedPackage, $targetPlatform, $configureOptionsValues, $output);
 
         return Command::SUCCESS;
     }
diff --git a/src/Platform/TargetPhp/PhpBinaryPath.php b/src/Platform/TargetPhp/PhpBinaryPath.php
index cc8ded70..025cc8dc 100644
--- a/src/Platform/TargetPhp/PhpBinaryPath.php
+++ b/src/Platform/TargetPhp/PhpBinaryPath.php
@@ -24,12 +24,12 @@
 class PhpBinaryPath
 {
     /**
-     * @param non-empty-string $phpBinaryPath
+     * @param non-empty-string      $phpBinaryPath
      * @param non-empty-string|null $phpConfigPath
      */
     private function __construct(
         public readonly string $phpBinaryPath,
-        private readonly string|null $phpConfigPath
+        private readonly string|null $phpConfigPath,
     ) {
         // @todo https://github.com/php/pie/issues/12 - we could verify that the given $phpBinaryPath really is a PHP install
     }
diff --git a/test/integration/Building/UnixBuildTest.php b/test/integration/Building/UnixBuildTest.php
index 920adcd4..08fe1823 100644
--- a/test/integration/Building/UnixBuildTest.php
+++ b/test/integration/Building/UnixBuildTest.php
@@ -10,6 +10,8 @@
 use Php\Pie\DependencyResolver\Package;
 use Php\Pie\Downloading\DownloadedPackage;
 use Php\Pie\ExtensionName;
+use Php\Pie\Platform\TargetPhp\PhpBinaryPath;
+use Php\Pie\Platform\TargetPlatform;
 use PHPUnit\Framework\Attributes\CoversClass;
 use PHPUnit\Framework\TestCase;
 use Symfony\Component\Console\Output\BufferedOutput;
@@ -40,7 +42,12 @@ public function testUnixBuildCanBuildExtension(): void
         );
 
         $unixBuilder = new UnixBuild();
-        $unixBuilder->__invoke($downloadedPackage, ['--enable-pie_test_ext'], $output);
+        $unixBuilder->__invoke(
+            $downloadedPackage,
+            TargetPlatform::fromPhpBinaryPath(PhpBinaryPath::fromCurrentProcess()),
+            ['--enable-pie_test_ext'],
+            $output,
+        );
 
         $outputString = $output->fetch();
 
diff --git a/test/unit/Platform/TargetPhp/PhpBinaryPathTest.php b/test/unit/Platform/TargetPhp/PhpBinaryPathTest.php
index 6eb8b356..03f8f628 100644
--- a/test/unit/Platform/TargetPhp/PhpBinaryPathTest.php
+++ b/test/unit/Platform/TargetPhp/PhpBinaryPathTest.php
@@ -48,7 +48,7 @@ public function testFromPhpConfigExecutable(): void
         $exitCode            = $process->run();
         $phpConfigExecutable = trim($process->getOutput());
 
-        if ($exitCode !== 0 || ! file_exists($phpConfigExecutable) || ! is_executable($phpConfigExecutable)) {
+        if ($exitCode !== 0 || ! file_exists($phpConfigExecutable) || ! is_executable($phpConfigExecutable) || $phpConfigExecutable === '') {
             self::markTestSkipped('Needs php-config in path to run this test');
         }