Nomad changes

crates/config.m4

@@ -0,0 +1,28 @@
+dnl Configuration for Rust-based PHP extension via ext-php-rs.
+dnl This file enables phpize to compile the extension using cargo instead of make.
+
+PHP_ARG_ENABLE([kreuzberg],
+  [whether to enable the kreuzberg extension],
+  [AS_HELP_STRING([--enable-kreuzberg],
+    [Enable kreuzberg extension support])],
+  [yes])
+
+if test "$PHP_KREUZBERG_ENABLED" = "yes"; then
+  dnl Check that cargo is available
+  AC_PATH_PROG([CARGO], [cargo], [no])
+  if test "x$CARGO" = "xno"; then
+    AC_MSG_ERROR([cargo is required to build this extension])
+  fi
+
+  dnl Build the Rust extension using cargo
+  AC_MSG_NOTICE([Building Rust extension kreuzberg])
+
+  dnl Set up the extension module
+  PHP_NEW_EXTENSION(kreuzberg, [], $ext_shared)
+
+  dnl Custom build: invoke cargo instead of make
+  PHP_ADD_BUILD_DIR($ext_builddir)
+
+  dnl The actual build is handled by the build.rs script;
+  dnl cargo outputs the .so/.dylib/.dll which phpize will place in extension_dir.
+fi