Add DISABLE_ALLOY_BOOTSTRAP to cef_config.h (see #3681, see #3685)

Include cef_config.h from base/cef_build.h and fix detection of
args.gn changes so that defines are available everywhere by default.

Fix include configuration for chrome_elf_set and sandbox targets.

.gitignore

@@ -51,6 +51,5 @@ Thumbs.db
 /binary_distrib
 /docs
 # CEF generated files
-/include/cef_config.h
 /include/cef_version.h
 .ccls-cache/

BUILD.gn

@@ -350,6 +350,10 @@ if (is_win) {
       "//build/config:precompiled_headers",
     ]
 
+    public_configs = [
+      "libcef/features:config",
+    ]
+
     if (is_component_build) {
       # Avoid linker errors with content_switches.cc in component build by not
       # defining CONTENT_EXPORT.
@@ -1247,18 +1251,29 @@ config("libcef_autogen_config") {
   }
 }
 
-# Configuration that will be applied to all targets that depend on
-# libcef_dll_wrapper.
-config("libcef_dll_wrapper_config") {
+# Configuration that supports #include paths relative to src/cef/ for CEF
+# client-side code. CEF library-side code (Chromium code and cef/libcef/
+# directory) uses #include paths relative to src/. See libcef/features:config
+# for CEF library-side configuration.
+config("libcef_includes_config") {
   include_dirs = [
-    # CEF sources use include paths relative to the CEF root directory.
+    # cef/include/ directory and CEF client-side code use #includes relative to
+    # the cef/ directory.
     ".",
-    # CEF generates some header files that also need to be discoverable.
+    # CEF generated header files that also need to be discoverable.
+    # These #includes from client-side code will not be prefixed with cef/.
     # They will be copied to the include/ directory in the binary distribution.
     "$root_out_dir/includes/cef",
   ]
+}
 
-  configs = [ ":libcef_autogen_config" ]
+# Configuration that will be applied to all targets that depend on
+# libcef_dll_wrapper.
+config("libcef_dll_wrapper_config") {
+  configs = [
+    ":libcef_autogen_config",
+    ":libcef_includes_config",
+  ]
 
   if (is_win) {
     if (current_cpu == "x86") {
@@ -1274,10 +1289,6 @@ config("libcef_dll_wrapper_config") {
       ldflags = [ "/STACK:0x800000" ]
     }
   }
-
-  if (!enable_alloy_bootstrap) {
-    defines = [ "DISABLE_ALLOY_BOOTSTRAP" ]
-  }
 }
 
 # libcef_dll_wrapper target.
@@ -1311,8 +1322,7 @@ static_library("libcef_dll_wrapper") {
 if (is_win) {
   static_library("cef_sandbox") {
     sources = [ "libcef_dll/sandbox/sandbox_win.cc" ]
-    # CEF sources use include paths relative to the CEF root directory.
-    include_dirs = [ "." ]
+    configs += [ ":libcef_includes_config" ]
     deps = [ "libcef/features", "//sandbox" ]
   }
 }
@@ -1320,8 +1330,7 @@ if (is_win) {
 if (is_mac) {
   static_library("cef_sandbox") {
     sources = [ "libcef_dll/sandbox/sandbox_mac.mm" ]
-    # CEF sources use include paths relative to the CEF root directory.
-    include_dirs = [ "." ]
+    configs += [ ":libcef_includes_config" ]
     deps = [
       "//build/config:executable_deps",
       "//sandbox/mac:seatbelt"
@@ -1505,13 +1514,24 @@ action("make_api_hash_header") {
   args = rebase_path(outputs + include_dir, root_build_dir)
 }
 
+# This no-op action lists args.gn as an output, allowing it to be referenced as
+# an input (trigger) for other actions. Otherwise, GN will complain that no
+# target generates the args.gn file because it’s below the $root_out_dir.
+action("args_gn_source") {
+  script = "//build/noop.py"
+  outputs = [ "$root_out_dir/args.gn" ]
+}
+
 # Generate cef_config.h.
 action("make_config_header") {
   script = "tools/make_config_header.py"
 
+  deps = [ ":args_gn_source" ]
+
+  inputs = [ "$root_out_dir/args.gn" ]
   outputs = [ "$root_out_dir/includes/cef/include/cef_config.h" ]
 
-  args = rebase_path(outputs + [ "$root_out_dir/args.gn" ], root_build_dir)
+  args = rebase_path(outputs + inputs, root_build_dir)
 }
 
 # Generate cef_color_ids.h.

include/base/cef_build.h

@@ -71,11 +71,26 @@
 #include "build/build_config.h"
 #include "cef/libcef/features/features.h"
 
+// The following #defines are used in cef/include/ headers and CEF client-side
+// code. CEF library-side code should use BUILDFLAG checks directly instead of
+// these #defines. CEF client-side code will get these #defines from
+// cef_config.h so any changes must also be reflected in
+// tools/make_config_header.py.
+
+#if BUILDFLAG(IS_LINUX)
+#include "ui/base/ozone_buildflags.h"
+#if BUILDFLAG(IS_OZONE_X11)
+#define CEF_X11 1
+#endif
+#endif
+
 #if !BUILDFLAG(ENABLE_ALLOY_BOOTSTRAP)
 #define DISABLE_ALLOY_BOOTSTRAP 1
 #endif
 
 #else  // !USING_CHROMIUM_INCLUDES
+#include "include/cef_config.h"
+
 // The following is substantially similar to the Chromium implementation.
 // If the Chromium implementation diverges the below implementation should be
 // updated to match.

include/internal/cef_types_linux.h

@@ -32,7 +32,6 @@
 #pragma once
 
 #include "include/base/cef_build.h"
-#include "include/cef_config.h"
 
 #if defined(OS_LINUX)
 

libcef/features/BUILD.gn

@@ -87,12 +87,14 @@ buildflag_header("features") {
 }
 
 # Configuration for all targets that include CEF source code library-side.
+# See //cef/libcef_includes_config for CEF client-side configuration.
 config("config") {
-  # CEF sources use includes relative to the CEF root directory.
   include_dirs = [
+    # cef/include/ directory uses #includes relative to the cef/ directory.
     "//cef",
 
-    # CEF generates some header files that also need to be discoverable.
+    # CEF generated header files that also need to be discoverable.
+    # These #includes from library-side code will always be prefixed with cef/.
     "$root_build_dir/includes",
   ]
   defines = [

tests/ceftests/run_all_unittests.cc

@@ -5,7 +5,6 @@
 #include <memory>
 
 #include "include/base/cef_build.h"
-#include "include/cef_config.h"
 
 #if defined(OS_LINUX) && defined(CEF_X11)
 #include <X11/Xlib.h>

tools/make_config_header.py

@@ -16,13 +16,21 @@ def make_config_header(gn_config):
 
   defines = []
 
-  if sys.platform.startswith('linux'):
-    lines = read_file(gn_config).split("\n")
+  lines = read_file(gn_config).split("\n")
 
-    # All Linux builds use Ozone, and the X11 platform is enabled by default.
-    # Check if the config is explicitly disabling it.
-    if not 'ozone_platform_x11=false' in lines:
-      defines.append('#define CEF_X11 1')
+  # The following #defines are used in cef/include/ headers and CEF client-side code.
+  # CEF library-side code will get these #defines from include/base/cef_build.h so
+  # any changes must also be reflected there.
+
+  # All Linux builds use Ozone, and the X11 platform is enabled by default.
+  # Check if the config is explicitly disabling it.
+  if sys.platform.startswith('linux') and \
+      not 'ozone_platform_x11=false' in lines:
+    defines.append('#define CEF_X11 1')
+
+  # Temporary define for disabling the Alloy bootstrap. See issue #3685.
+  if 'enable_alloy_bootstrap=false' in lines:
+    defines.append('#define DISABLE_ALLOY_BOOTSTRAP 1')
 
   result = get_copyright(full=True, translator=False) + \
 """//