Fix nits for ext/tokenizer

Author: petk

cmake/cmake/Requirements.cmake

@@ -51,8 +51,8 @@ find_package(Sendmail)
 
 ################################################################################
 # Find PHP installed on the system for generating stub files (*_arginfo.h),
-# Zend/zend_vm_gen.php, ext/tokenizer/tokenizer_data_gen.php and similar where
-# it can be used. Otherwise the built cli sapi is used at the build phase.
-# Minimum supported version for gen_stub.php is PHP 7.4.
+# Zend/zend_vm_gen.php, and similar where it can be used. Otherwise the built
+# cli SAPI is used at the build phase. Minimum supported version for
+# gen_stub.php is PHP 7.4.
 ################################################################################
 find_package(PHPSystem 7.4)

cmake/ext/tokenizer/CMakeLists.txt

@@ -66,11 +66,11 @@ target_sources(
     tokenizer.stub.php
 )
 
-# The tokenizer extension depends on the generated Zend scanner and parser.
-add_dependencies(php_ext_tokenizer Zend::Zend)
-
 # Generate tokenizer data source files.
 if(EXISTS ${PHP_SOURCE_DIR}/Zend/zend_language_parser.y)
+  # The tokenizer extension depends on the generated Zend scanner and parser.
+  add_dependencies(php_ext_tokenizer Zend::Zend)
+
   add_custom_command(
     OUTPUT
       ${CMAKE_CURRENT_SOURCE_DIR}/tokenizer_data.stub.php
@@ -79,7 +79,6 @@ if(EXISTS ${PHP_SOURCE_DIR}/Zend/zend_language_parser.y)
       ${PHP_SOURCE_DIR}/Zend/zend_language_parser.y
     COMMAND
       ${CMAKE_COMMAND}
-      -D PHP_SOURCE_DIR=${PHP_SOURCE_DIR}
       -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/GenerateTokenizerData.cmake
     COMMENT
       "[ext/tokenizer] Regenerating tokenizer_data.c and tokenizer_data.stub.php"

cmake/ext/tokenizer/cmake/GenerateTokenizerData.cmake

@@ -1,16 +1,17 @@
-# This is CMake-based alternative of ext/tokenizer/tokenizer_data_gen.php
-#
+# This is CMake-based alternative of ext/tokenizer/tokenizer_data_gen.php.
 # Run as:
-#   cmake -D PHP_SOURCE_DIR=<php-src> -P GenerateTokenizerData.cmake
+#   cmake -P [...ext/tokenizer/cmake/]GenerateTokenizerData.cmake
 
 cmake_minimum_required(VERSION 3.25...3.31)
 
 if(NOT CMAKE_SCRIPT_MODE_FILE)
   message(FATAL_ERROR "This is a command-line script.")
 endif()
 
-if(NOT PHP_SOURCE_DIR)
-  message(FATAL_ERROR "PHP_SOURCE_DIR variable is required.")
+set(PHP_SOURCE_DIR ${CMAKE_CURRENT_LIST_DIR}/../../..)
+
+if(NOT EXISTS ${PHP_SOURCE_DIR}/Zend/zend_language_parser.y)
+  message(FATAL_ERROR "Zend/zend_language_parser.y not found.")
 endif()
 
 set(regex "^%token [^T]*(T_[^ \n]+)")