Add various improvements

- Rechecked interprocedural optimization (IPO/LTO).
- PHP_LTO option renamed to PHP_IPO.
- Fixed typo in patches updater script.
- Synced CS.

Author: petk

bin/update-patches.sh

@@ -131,7 +131,7 @@ for php in $phpVersions; do
     fi
 
     # Update stub files if any.
-    "$phpExecutable" build/get_stub.php
+    "$phpExecutable" build/gen_stub.php
     if test -n "$($git status --porcelain)"; then
       "$git" add .
       "$git" commit --amend --no-edit

cmake/cmake/modules/PHP/Core/Optimization.cmake

@@ -16,23 +16,20 @@ This module also checks whether IPO/LTO can be enabled based on the PHP
 configuration (due to global register variables) and compiler/platform.
 
 https://cmake.org/cmake/help/latest/prop_tgt/INTERPROCEDURAL_OPTIMIZATION.html
-
-TODO: Recheck Clang errors as OBJECT libraries doesn't seem to work.
-TODO: Recheck and add PHP_LTO option to docs.
 #]=============================================================================]
 
 include_guard(GLOBAL)
 
-option(PHP_LTO "Build PHP with link time optimization (LTO) if supported")
-mark_as_advanced(PHP_LTO)
+option(PHP_IPO "Enable interprocedural optimization (IPO/LTO)")
+mark_as_advanced(PHP_IPO)
 
 block(PROPAGATE CMAKE_INTERPROCEDURAL_OPTIMIZATION)
-  set(enable_ipo ${PHP_LTO})
+  set(enable_ipo ${PHP_IPO})
   set(reason "")
 
-  if(NOT PHP_LTO)
-    set(enable_ipo FALSE)
+  if(NOT PHP_IPO)
     # Disabled.
+    set(enable_ipo FALSE)
   elseif(
     CMAKE_C_COMPILER_ID STREQUAL "GNU"
     AND (

cmake/ext/mbstring/CMakeLists.txt

@@ -87,13 +87,19 @@ target_sources(
         mbstring.h
 )
 
-target_compile_definitions(php_ext_mbstring PRIVATE ZEND_ENABLE_STATIC_TSRMLS_CACHE)
+target_compile_definitions(
+  php_ext_mbstring
+  PRIVATE ZEND_ENABLE_STATIC_TSRMLS_CACHE
+)
 
 target_include_directories(php_ext_mbstring PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
 
 # The mbstring extension doesn't seem to support interprocedural optimization
-# (IPO).
-set_target_properties(php_ext_mbstring PROPERTIES INTERPROCEDURAL_OPTIMIZATION OFF)
+# (IPO/LTO).
+set_target_properties(
+  php_ext_mbstring
+  PROPERTIES INTERPROCEDURAL_OPTIMIZATION FALSE
+)
 
 set_property(
   TARGET php_ext_mbstring

patches/8.6/cmake.patch

@@ -290,7 +290,7 @@ index e691bd3964b..12745d29cb9 100644
 +# Local user presets
 +/CMakeUserPresets.json
 diff --git a/ext/standard/proc_open.c b/ext/standard/proc_open.c
-index edccbeae564..df88ce86d9e 100644
+index 11111140679..0c2c671140f 100644
 --- a/ext/standard/proc_open.c
 +++ b/ext/standard/proc_open.c
 @@ -52,7 +52,7 @@