Enable building art and tests with linux_bionic

A linux_bionic built runtime can be created by modifying the
$OUT_DIR/soong/soong.config json file to add a '"Host_bionic": true'
entry and then running the following command:

% m --skip-make $OUT_DIR/soong/host/linux_bionic-x86/<target-file>

A script 'tools/build_linux_bionic_tests.sh' was also added that will
build linux-bionic versions of host-test related files.

Also modify tests so they can be run.  Currently all run-tests pass
when run on a linux_bionic host build. All gtests pass except for the
following 9 tests:
  ArmVIXLAssemblerTest.VixlJniHelpers
  ArmVIXLAssemblerTest.VixlLoadFromOffset
  ArmVIXLAssemblerTest.VixlStoreToOffset
  DwarfTest.DebugFrame
  DwarfTest.DebugFrame64
  DwarfTest.x86_64_RegisterMapping
  DwarfTest.DebugLine
  DwarfTest.DebugLineSpecialOpcodes
  DwarfTest.DebugInfo

Since these tests must be run manually without the standard
(makefile-based) testrunner it's not clear yet whether these failures
are important or what must be done to fix them. Several tests had
dependencies on the actual location of the libart library that needed
to be fixed, these tests might as well.

Test: ./tools/build_linux_bionic_tests.sh
Test: ./test/testrunner/testrunner.py --no-build --host --64 --run-test-option=--bionic
Test: find $OUT_DIR/soong/host/linux_bionic-x86/nativetest64 -mindepth 2 -type f | while read abc; do $abc; done | tee all-tests.txt
Test: tail -n +0 -f all-tests.txt | grep FAILED

Bug: 31559095
Bug: 118778408
Change-Id: I5fae4e54371e7410678619f18fcb54a3bd34e9b0

1 files changed, 7 insertions, 3 deletions

diff --git a/libartbase/base/file_utils_test.cc b/libartbase/base/file_utils_test.cc
index f7c9c5e264..c9173076d1 100644
--- a/libartbase/base/file_utils_test.cc
+++ b/libartbase/base/file_utils_test.cc
@@ -83,11 +83,15 @@ TEST_F(FileUtilsTest, GetAndroidRootSafe) {
   ASSERT_EQ(0, unsetenv("ANDROID_ROOT"));
   std::string android_root3 = GetAndroidRootSafe(&error_msg);
   // This should be the same as the other root (modulo realpath), otherwise the test setup is
-  // broken.
-  UniqueCPtr<char> real_root(realpath(android_root.c_str(), nullptr));
+  // broken. On non-bionic. On bionic we can be running with a different libart that lives outside
+  // of ANDROID_ROOT
   UniqueCPtr<char> real_root3(realpath(android_root3.c_str(), nullptr));
+#if !defined(__BIONIC__ ) || defined(__ANDROID__)
+  UniqueCPtr<char> real_root(realpath(android_root.c_str(), nullptr));
   EXPECT_STREQ(real_root.get(), real_root3.get());
-
+#else
+  EXPECT_STRNE(real_root3.get(), "");
+#endif
 
   // Reset ANDROID_ROOT, as other things may depend on it.
   ASSERT_EQ(0, setenv("ANDROID_ROOT", android_root_env.c_str(), /* overwrite */ 1));