[llvm] 11a75e6 - [gn build] Allow option to build with asan/tsan/ubsan

[Arthur Eubanks via llvm-commits]

Author: Arthur Eubanks
Date: 2020-09-23T11:24:38-07:00
New Revision: 11a75e6c92c9bde26f3c925b25135c2461afac1c

URL: https://github.com/llvm/llvm-project/commit/11a75e6c92c9bde26f3c925b25135c2461afac1c
DIFF: https://github.com/llvm/llvm-project/commit/11a75e6c92c9bde26f3c925b25135c2461afac1c.diff

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

Reviewed By: thakis

Differential Revision: https://reviews.llvm.org/D88056

Added: 
    

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

Removed: 
    


################################################################################
diff  --git a/llvm/utils/gn/build/BUILD.gn b/llvm/utils/gn/build/BUILD.gn
index 3c0b905991b5..373d371f017b 100644
--- a/llvm/utils/gn/build/BUILD.gn
+++ b/llvm/utils/gn/build/BUILD.gn
@@ -235,6 +235,27 @@ config("compiler_defaults") {
       ]
     }
   }
+
+  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") {

diff  --git a/llvm/utils/gn/build/buildflags.gni b/llvm/utils/gn/build/buildflags.gni
index eb8ac55e48e0..b04eae19a784 100644
--- a/llvm/utils/gn/build/buildflags.gni
+++ b/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.