[PATCH] D88056: [gn build] Allow option to build with asan/tsan/ubsan

[Arthur Eubanks via Phabricator via llvm-commits]

aeubanks created this revision.
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Herald added a subscriber: llvm-commits.
aeubanks requested review of this revision.

Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D88056

Files:
  llvm/utils/gn/build/BUILD.gn
  llvm/utils/gn/build/buildflags.gni


Index: llvm/utils/gn/build/buildflags.gni
===================================================================
--- llvm/utils/gn/build/buildflags.gni
+++ llvm/utils/gn/build/buildflags.gni
@@ -1,6 +1,15 @@
 declare_args() {
   # Whether to build with debug information.
   is_debug = false
+
+  # Whether to build with tsan.
+  use_tsan = false
+
+  # Whether to build with ubsan.
+  use_ubsan = false
+
+  # Whether to build with asan.
+  use_asan = false
 }
 
 # args that depend on other args must live in a later declare_args() block.
Index: llvm/utils/gn/build/BUILD.gn
===================================================================
--- llvm/utils/gn/build/BUILD.gn
+++ llvm/utils/gn/build/BUILD.gn
@@ -235,6 +235,24 @@
       ]
     }
   }
+
+  if (use_ubsan) {
+    assert(is_clang && current_os == "linux", "ubsan only supported on Linux/Clang")
+    cflags += [ "-fsanitize=undefined" ]
+    ldflags += [ "-fsanitize=undefined" ]
+  }
+
+  if (use_asan) {
+    assert(is_clang && current_os == "linux", "asan only supported on Linux/Clang")
+    cflags += [ "-fsanitize=address" ]
+    ldflags += [ "-fsanitize=address" ]
+  }
+
+  if (use_tsan) {
+    assert(is_clang && current_os == "linux", "tsan only supported on Linux/Clang")
+    cflags += [ "-fsanitize=thread" ]
+    ldflags += [ "-fsanitize=thread" ]
+  }
 }
 
 config("no_exceptions") {


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