Add a compile flag to allow setting -fexceptions.

Fixes #29368
project-chip · Sep 21, 2023 · 1feb1c2 · 1feb1c2
1 parent 94853cf
commit 1feb1c2
Showing 1 changed file with 10 additions and 2 deletions.
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
@@ -485,8 +485,12 @@ config("coverage_default") {
 }
 
 declare_args() {
-  # Enable Runtime Type Information (RTTI)
+  # Enable or disable Runtime Type Information (RTTI).
+  # Defaults true on darwin because Darwin.framework uses it.
   enable_rtti = current_os == "mac" || current_os == "ios"
+
+  # Enable or disable support for C++ exceptions.
+  enable_exceptions = false
 }
 
 config("no_rtti") {
@@ -514,7 +518,11 @@ config("exceptions") {
 }
 
 config("exceptions_default") {
-  configs = [ ":no_exceptions" ]
+  if (enable_exceptions) {
+    configs = [ ":exceptions" ]
+  } else {
+    configs = [ ":no_exceptions" ]
+  }
 }
 
 config("unwind_tables") {