Fix extension dependencies a bit further

This now parses extensions CMakeLists.txt by only the add_dependencies()
usage. It sorts, configures extensions in the ext directory and emits
warnins or errors in a bit more intuitive manner.

Traversing of ext directories is moved to its own CMakeLists.txt for
now.

PDO* extensions dependent options simplified to regular option().

The configuration "titles" are refactored a bit due to CMake GUIs and
all sorts of log formats.

For the time being the PHP_SOURCE_DIR is indicator whether the extension
is built in the php-src or as a standalone extension.

Author: petk

cmake/CMakeLists.txt

@@ -3,12 +3,9 @@ cmake_minimum_required(VERSION 3.25...3.31)
 # Configure CMake behavior.
 include(cmake/CMakeDefaults.cmake)
 
-message(
-  STATUS
-  "-----------------------------
-   Initializing PHP build system
-   -----------------------------"
-)
+message(STATUS "-----------------------------")
+message(STATUS "Initializing PHP build system")
+message(STATUS "-----------------------------\n")
 
 message(STATUS "CMake version: ${CMAKE_VERSION}")
 message(STATUS "CMake generator: ${CMAKE_GENERATOR}")
@@ -34,12 +31,10 @@ add_subdirectory(sapi)
 add_subdirectory(ext)
 add_subdirectory(Zend)
 
-message(
-  STATUS
-  "---------------
-   Configuring PHP
-   ---------------"
-)
+message(STATUS "---------------")
+message(STATUS "Configuring PHP")
+message(STATUS "---------------\n")
+
 add_subdirectory(pear)
 add_subdirectory(TSRM)
 add_subdirectory(win32)

cmake/Zend/CMakeLists.txt

@@ -2,12 +2,9 @@
 # Zend engine.
 ################################################################################
 
-message(
-  STATUS
-  "-----------------------
-   Configuring Zend engine
-   -----------------------"
-)
+message(STATUS "-----------------------")
+message(STATUS "Configuring Zend engine")
+message(STATUS "-----------------------\n")
 
 # Read the Zend engine version.
 block(PROPAGATE Zend_VERSION Zend_VERSION_LABEL)

cmake/cmake/Bootstrap.cmake

@@ -46,12 +46,9 @@ include(cmake/Configuration.cmake)
 # Check requirements.
 include(cmake/Requirements.cmake)
 
-message(
-  STATUS
-  "---------------------
-   Running system checks
-   ---------------------"
-)
+message(STATUS "---------------------")
+message(STATUS "Running system checks")
+message(STATUS "---------------------\n")
 
 # Run PHP configuration checks.
 include(cmake/ConfigureChecks.cmake)