diff --git a/src/SPC/builder/linux/LinuxBuilder.php b/src/SPC/builder/linux/LinuxBuilder.php
index 74ffb93f..33db12d3 100644
--- a/src/SPC/builder/linux/LinuxBuilder.php
+++ b/src/SPC/builder/linux/LinuxBuilder.php
@@ -102,6 +102,11 @@ class LinuxBuilder extends UnixBuilderBase
                 'Change SPC_CMD_VAR_PHP_EMBED_TYPE to static.'
             );
         }
+
+        $extra = '';
+        if ($this->getPHPVersionID() < 84000 && $this->getExt('readline') && $this->getLib('libreadline') !== null) {
+            $extra = 'ac_cv_lib_readline_rl_pending_input=yes';
+        }
         shell()->cd(SOURCE_PATH . '/php-src')
             ->exec(
                 $php_configure_env . ' ' .
@@ -116,8 +121,8 @@ class LinuxBuilder extends UnixBuilderBase
                 $json_74 .
                 $zts .
                 $maxExecutionTimers .
-                $this->makeStaticExtensionArgs() . ' '
-                // 'ac_cv_lib_readline_rl_pending_input=yes'
+                $this->makeStaticExtensionArgs() . ' ' .
+                $extra
             );
 
         $this->emitPatchPoint('before-php-make');
@@ -324,7 +329,8 @@ class LinuxBuilder extends UnixBuilderBase
         }
 
         if (getenv('SPC_CMD_VAR_PHP_EMBED_TYPE') === 'static') {
-            f_passthru('ar -t ' . BUILD_LIB_PATH . "/libphp.a | grep '\\.a$' | xargs -n1 ar d " . BUILD_LIB_PATH . '/libphp.a');
+            $AR = getenv('AR') ?: 'ar';
+            f_passthru("{$AR} -t " . BUILD_LIB_PATH . "/libphp.a | grep '\\.a$' | xargs -n1 ar d " . BUILD_LIB_PATH . '/libphp.a');
         }
 
         if (!$this->getOption('no-strip', false) && file_exists(BUILD_LIB_PATH . '/' . $realLibName)) {
diff --git a/src/SPC/builder/macos/MacOSBuilder.php b/src/SPC/builder/macos/MacOSBuilder.php
index 3530de1b..b8d59098 100644
--- a/src/SPC/builder/macos/MacOSBuilder.php
+++ b/src/SPC/builder/macos/MacOSBuilder.php
@@ -267,7 +267,8 @@ class MacOSBuilder extends UnixBuilderBase
             ->exec(getenv('SPC_CMD_PREFIX_PHP_MAKE') . ' INSTALL_ROOT=' . BUILD_ROOT_PATH . " {$vars} install");
 
         if (getenv('SPC_CMD_VAR_PHP_EMBED_TYPE') === 'static') {
-            f_passthru('ar -t ' . BUILD_LIB_PATH . "/libphp.a | grep '\\.a$' | xargs -n1 ar d " . BUILD_LIB_PATH . '/libphp.a');
+            $AR = getenv('AR') ?: 'ar';
+            f_passthru("{$AR} -t " . BUILD_LIB_PATH . "/libphp.a | grep '\\.a$' | xargs -n1 ar d " . BUILD_LIB_PATH . '/libphp.a');
         }
         $this->patchPhpScripts();
     }
diff --git a/src/SPC/builder/unix/library/libxslt.php b/src/SPC/builder/unix/library/libxslt.php
index 238997da..c5315cbf 100644
--- a/src/SPC/builder/unix/library/libxslt.php
+++ b/src/SPC/builder/unix/library/libxslt.php
@@ -45,8 +45,9 @@ trait libxslt
 
         $this->patchPkgconfPrefix(['libexslt.pc', 'libxslt.pc']);
         $this->patchLaDependencyPrefix();
+        $AR = getenv('AR') ?: 'ar';
         shell()->cd(BUILD_LIB_PATH)
-            ->exec("ar -t libxslt.a | grep '\\.a$' | xargs -n1 ar d libxslt.a")
-            ->exec("ar -t libexslt.a | grep '\\.a$' | xargs -n1 ar d libexslt.a");
+            ->exec("{$AR} -t libxslt.a | grep '\\.a$' | xargs -n1 ar d libxslt.a")
+            ->exec("{$AR} -t libexslt.a | grep '\\.a$' | xargs -n1 ar d libexslt.a");
     }
 }
diff --git a/src/SPC/builder/unix/library/ngtcp2.php b/src/SPC/builder/unix/library/ngtcp2.php
index 9c9919d8..bb993d42 100644
--- a/src/SPC/builder/unix/library/ngtcp2.php
+++ b/src/SPC/builder/unix/library/ngtcp2.php
@@ -48,6 +48,7 @@ trait ngtcp2
 
         // on macOS, the static library may contain other static libraries?
         // ld: archive member 'libssl.a' not a mach-o file in libngtcp2_crypto_ossl.a
-        shell()->cd(BUILD_LIB_PATH)->exec("ar -t libngtcp2_crypto_ossl.a | grep '\\.a$' | xargs -n1 ar d libngtcp2_crypto_ossl.a");
+        $AR = getenv('AR') ?: 'ar';
+        shell()->cd(BUILD_LIB_PATH)->exec("{$AR} -t libngtcp2_crypto_ossl.a | grep '\\.a$' | xargs -n1 ar d libngtcp2_crypto_ossl.a");
     }
 }