add more patches for build issues

chromium-141-csss_style_sheet.patch
chromium-141-use_libcxx_modules.patch
modify chromium-141-no_cxx_modules.patch

chromium-141-csss_style_sheet.patch

@@ -0,0 +1,16 @@
+Fix ftbfs
+
+v8/include/cppgc/visitor.h:440:19: error: invalid application of 'sizeof' to an incomplete type 'blink::CSSStyleSheet'
+  440 |     static_assert(sizeof(T), "Pointee type must be fully defined.");
+
+diff -up chromium-141.0.7390.37/third_party/blink/renderer/bindings/scripts/bind_gen/observable_array.py.ftbfs-csss_style_sheet chromium-141.0.7390.37/third_party/blink/renderer/bindings/scripts/bind_gen/observable_array.py
+--- chromium-141.0.7390.37/third_party/blink/renderer/bindings/scripts/bind_gen/observable_array.py.ftbfs-csss_style_sheet	2025-09-23 22:21:14.000000000 +0200
++++ chromium-141.0.7390.37/third_party/blink/renderer/bindings/scripts/bind_gen/observable_array.py	2025-10-01 17:55:51.303926035 +0200
+@@ -433,6 +433,7 @@ def generate_observable_array(observable
+     header_node.accumulator.add_include_headers([
+         component_export_header(api_component, for_testing),
+         "third_party/blink/renderer/bindings/core/v8/idl_types.h",
++        "third_party/blink/renderer/core/css/css_style_sheet.h",
+         "third_party/blink/renderer/platform/bindings/observable_array.h",
+     ])
+     source_node.accumulator.add_include_headers([

chromium-141-no_cxx_modules.patch

@@ -1,14 +1,3 @@
---- chromium-141.0.7390.37/build/config/compiler/BUILD.gn	2025/10/01 14:05:36	1.1
-+++ chromium-141.0.7390.37/build/config/compiler/BUILD.gn	2025/10/01 14:24:09
-@@ -1870,7 +1870,7 @@
-     cflags_cc = [
-       "-fmodules",
-       clang_arg_prefix + "-fno-implicit-module-maps",
--      "-fno-implicit-modules",
-+      # "-fno-implicit-modules",
- 
-       "-Xclang",
-       "-fmodules-local-submodule-visibility",  # required for builtins
 --- chromium-141.0.7390.37/third_party/pthreadpool/chromium/jobs.cc	2025/10/02 13:48:22	1.1
 +++ chromium-141.0.7390.37/third_party/pthreadpool/chromium/jobs.cc	2025/10/02 13:50:01
 @@ -22,9 +22,10 @@

chromium-141-use_libcxx_modules.patch

@@ -0,0 +1,28 @@
+Fix FTBFS
+
+../../build/modules/linux-x64/module.modulemap:11:12: error: header '../../linux/debian_bullseye_amd64-sysroot/usr/include/alloca.h' not found
+   11 |     header "../../linux/debian_bullseye_amd64-sysroot/usr/include/alloca.h"
+      |            ^
+1 error generated
+
+diff -up chromium-141.0.7390.37/build/config/BUILDCONFIG.gn.me chromium-141.0.7390.37/build/config/BUILDCONFIG.gn
+--- chromium-141.0.7390.37/build/config/BUILDCONFIG.gn.me	2025-10-01 17:39:47.242174153 +0200
++++ chromium-141.0.7390.37/build/config/BUILDCONFIG.gn	2025-10-01 17:49:54.736578295 +0200
+@@ -557,6 +557,8 @@ foreach(_target_type,
+         ]) {
+   template(_target_type) {
+     target(_target_type, target_name) {
++      use_libcxx_modules = false
++
+       forward_variables_from(invoker, "*", TESTONLY_AND_VISIBILITY)
+       forward_variables_from(invoker, TESTONLY_AND_VISIBILITY)
+       if (!defined(inputs)) {
+@@ -660,6 +662,8 @@ foreach(_target_type,
+       # TODO(crbug.com/326584510): Reclient doesn't respect this variable, see
+       # rbe_bug_326584510_missing_inputs in //build/config/clang/clang.gni
+       _uses_cflags = false
++      use_libcxx_modules = false
++ 
+       if (defined(sources)) {
+         foreach(f, sources) {
+           if (string_replace(f + ".END", ".cc.END", "") != f + ".END" ||

chromium.changes

@@ -18,8 +18,10 @@ Wed Oct  1 18:16:47 CEST 2025 - ro@suse.de
   * Various fixes from internal audits, fuzzing and other initiatives
 
 - added patches:
+  chromium-141-csss_style_sheet.patch (from fedora)
+  chromium-141-use_libcxx_modules.patch (from fedora)
   chromium-141-no_cxx_modules.patch
-  (no -fno-implicit-modules yet)
+  (one more fallout from clang modules)
 - modified patches: (context)
   ppc-fedora-0001-sandbox-linux-Update-syscall-helpers-lists-for-ppc64.patch
   ppc-fedora-Sandbox-linux-services-credentials.cc-PPC.patch

chromium.spec

@@ -168,7 +168,9 @@ Patch375:       chromium-131-fix-qt-ui.pach
 Patch377:       chromium-139-deterministic.patch
 Patch378:       chromium-139-pdfium-openjpeg-CVE-2025-54874.patch
 Patch379:       chromium-140-keep-__rust_no_alloc_shim_is_unstable.patch
-Patch380:       chromium-141-no_cxx_modules.patch
+Patch380:       chromium-141-use_libcxx_modules.patch
+Patch381:       chromium-141-csss_style_sheet.patch
+Patch382:       chromium-141-no_cxx_modules.patch
 # conditionally applied patches ppc64le only
 Patch401:       ppc-fedora-add-ppc64-architecture-string.patch
 Patch402:       ppc-fedora-0001-linux-seccomp-bpf-ppc64-glibc-workaround-in-SIGSYS-h.patch