[ASan] Always build shared ASan runtime on Linux.

This commit changes the strategy for building shared ASan runtime
and the way we test it:
  - COMPILER_RT_BUILD_SHARED_ASAN CMake option is removed. We now
    always build shared ASan runtime (it is the default on Android,
    Windows and Mac, and not the default on Linux and FreeBSD).
  - Platforms, which use static runtime by default now have
    "check-asan-dynamic" testsuite. This testsuite contains instrumented
    unit tests, and ASan lit tests, and runs them with shared ASan
    runtime. This testsuite is *not* a part of "check-asan" and
    *not* a part of "check-all", as adding 1000 more test cases, which
    duplicate existing ones is costly. However, you're welcome to
    add this command to your buildbot.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224470 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 1 deletions

diff --git a/test/asan/Unit/lit.site.cfg.in b/test/asan/Unit/lit.site.cfg.in
index 1791b6b05..a3549758c 100644
--- a/test/asan/Unit/lit.site.cfg.in
+++ b/test/asan/Unit/lit.site.cfg.in
@@ -17,7 +17,13 @@ config.name = 'AddressSanitizer-Unit'
 # Setup test source and exec root. For unit tests, we define
 # it as build directory with ASan unit tests.
 # FIXME: De-hardcode this path.
-config.test_exec_root = "@COMPILER_RT_BINARY_DIR@/lib/asan/tests"
+if @ASAN_TEST_DYNAMIC@:
+  test_dir = "dynamic"
+else:
+  test_dir = "default"
+config.test_exec_root = os.path.join("@COMPILER_RT_BINARY_DIR@",
+                                     "lib", "asan", "tests", test_dir)
+
 config.test_source_root = config.test_exec_root
 
 # Set LD_LIBRARY_PATH to pick dynamic runtime up properly.