diff --git a/zorg/buildbot/builders/SanitizerBuilder.py b/zorg/buildbot/builders/SanitizerBuilder.py
--- a/zorg/buildbot/builders/SanitizerBuilder.py
+++ b/zorg/buildbot/builders/SanitizerBuilder.py
@@ -6,6 +6,7 @@
 def getSanitizerBuildFactory(
     clean=False,
     depends_on_projects=None,
+    extra_configure_args=None,
     env=None,
     timeout=1200):
 
@@ -30,6 +31,11 @@
             "libunwind",
             "lld"]
 
+    if extra_configure_args:
+        extra_configure_args = ['--'] + list(extra_configure_args)
+    else:
+        extra_configure_args = []
+
     # Explicitly use '/' as separator, because it works on *nix and Windows.
     sanitizer_script_dir = "sanitizer_buildbot/sanitizers"
     sanitizer_script = "../%s/zorg/buildbot/builders/sanitizers/%s" % (sanitizer_script_dir, "buildbot_selector.py")
@@ -47,10 +53,11 @@
         alwaysUseLatest=True)
 
     # Run annotated command for sanitizer.
+    command = ['python', sanitizer_script] + extra_configure_args
     f.addStep(AnnotatedCommand(name="annotate",
                                description="annotate",
                                timeout=timeout,
                                haltOnFailure=True,
-                               command="python " + sanitizer_script,
+                               command=command,
                                env=merged_env))
     return f
diff --git a/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh b/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh
--- a/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh
+++ b/zorg/buildbot/builders/sanitizers/buildbot_cmake.sh
@@ -13,6 +13,14 @@
 export PATH="/usr/local/bin:$PATH"
 export ANDROID_SDK_HOME=$ROOT/../../..
 
+for arg in "$@"
+do
+    case $arg in
+        --CMAKE_ARGS=*)
+        CMAKE_ARGS="${arg#*=}"
+    esac
+done
+
 # Always clobber bootstrap build trees.
 rm -rf compiler_rt_build llvm_build* symbolizer_build*
 
@@ -27,7 +35,7 @@
 LLVM=$ROOT/llvm
 ZLIB=$ROOT/zlib
 
-CMAKE_COMMON_OPTIONS="${CMAKE_COMMON_OPTIONS:-} -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_PARALLEL_LINK_JOBS=10"
+CMAKE_COMMON_OPTIONS="${CMAKE_COMMON_OPTIONS:-} -DLLVM_ENABLE_ASSERTIONS=ON -DLLVM_PARALLEL_LINK_JOBS=10 ${CMAKE_ARGS}"
 ENABLE_LIBCXX_FLAG=
 if [ "$PLATFORM" == "Darwin" ]; then
   CMAKE_COMMON_OPTIONS="${CMAKE_COMMON_OPTIONS} -DPYTHON_EXECUTABLE=/usr/bin/python"
diff --git a/zorg/buildbot/builders/sanitizers/buildbot_selector.py b/zorg/buildbot/builders/sanitizers/buildbot_selector.py
--- a/zorg/buildbot/builders/sanitizers/buildbot_selector.py
+++ b/zorg/buildbot/builders/sanitizers/buildbot_selector.py
@@ -5,6 +5,7 @@
 import sys
 
 THIS_DIR=os.path.dirname(sys.argv[0])
+extra_args = sys.argv[1:]
 
 
 def bash(path):
@@ -44,7 +45,7 @@
 def Main():
   builder = os.environ.get('BUILDBOT_BUILDERNAME')
   print "builder name: %s" % (builder)
-  cmd = BOT_ASSIGNMENT.get(builder)
+  cmd = BOT_ASSIGNMENT.get(builder) + ' '.join(extra_args)
   if not cmd:
     sys.stderr.write('ERROR - unset/invalid builder name\n')
     sys.exit(1)