chore(build): remove dep on sysroot

build/trivalent.spec

@@ -485,7 +485,7 @@ CHROMIUM_GN_DEFINES+=' is_cfi=true use_cfi_cast=true'
 CHROMIUM_GN_DEFINES+=' enable_reporting=false'
 CHROMIUM_GN_DEFINES+=' enable_remoting=false'
 CHROMIUM_GN_DEFINES+=' is_clang=true'
-CHROMIUM_GN_DEFINES+=' use_sysroot=true'
+CHROMIUM_GN_DEFINES+=' use_sysroot=false'
 CHROMIUM_GN_DEFINES+=' target_os="linux"'
 CHROMIUM_GN_DEFINES+=' current_os="linux"'
 CHROMIUM_GN_DEFINES+=' treat_warnings_as_errors=false'
@@ -501,7 +501,6 @@ CHROMIUM_GN_DEFINES+=' use_qt6=true moc_qt6_path="%{_libdir}/qt6/libexec/"'
 CHROMIUM_GN_DEFINES+=' use_pulseaudio=true'
 CHROMIUM_GN_DEFINES+=' rtc_use_pipewire=true rtc_link_pipewire=true'
 CHROMIUM_GN_DEFINES+=' v8_enable_drumbrake=true'
-CHROMIUM_GN_DEFINES+=' use_system_libffi=false' # No longer removing sysroot
 export CHROMIUM_GN_DEFINES
 
 # Check that there is no system 'google' module, shadowing bundled ones:

patches/remove-sysroot-dependency.patch

@@ -0,0 +1,46 @@
+Copyright 2024-2025 The Trivalent Authors
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is
+distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and limitations under the License.
+---
+diff --git a/build/config/BUILDCONFIG.gn b/build/config/BUILDCONFIG.gn
+index 24a1d14395..db1b4d3d18 100644
+--- a/build/config/BUILDCONFIG.gn
++++ b/build/config/BUILDCONFIG.gn
+@@ -581,7 +581,7 @@ foreach(_target_type,
+       }
+
+       if (!defined(use_libcxx_modules)) {
+-        use_libcxx_modules = is_clang
++        use_libcxx_modules = false
+       }
+
+       if (filter_include(
+@@ -702,7 +702,7 @@ foreach(_target_type,
+       }
+
+       if (!defined(use_libcxx_modules)) {
+-        use_libcxx_modules = is_clang
++        use_libcxx_modules = false
+       }
+
+       if (filter_include(
+diff --git a/build/config/linux/libffi/BUILD.gn b/build/config/linux/libffi/BUILD.gn
+index 6e45f4c226..37bc80a89c 100644
+--- a/build/config/linux/libffi/BUILD.gn
++++ b/build/config/linux/libffi/BUILD.gn
+@@ -19,6 +19,6 @@ if (use_system_libffi) {
+   }
+ } else {
+   config("libffi") {
+-    libs = [ "ffi_pic" ]
++    libs = [ "ffi" ]
+   }
+ }