Index: test/lsan/CMakeLists.txt
===================================================================
--- test/lsan/CMakeLists.txt
+++ test/lsan/CMakeLists.txt
@@ -1,21 +1,47 @@
 set(LSAN_LIT_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 
-set(LSAN_LIT_TEST_MODE "Standalone")
-configure_lit_site_cfg(
-  ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-  ${CMAKE_CURRENT_BINARY_DIR}/LsanConfig/lit.site.cfg)
-
-set(LSAN_LIT_TEST_MODE "AddressSanitizer")
-configure_lit_site_cfg(
-  ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-  ${CMAKE_CURRENT_BINARY_DIR}/AsanConfig/lit.site.cfg)
+set(LSAN_TESTSUITES)
+ 
+set(LSAN_TEST_ARCH ${LSAN_SUPPORTED_ARCH})
+if(APPLE)
+  darwin_filter_host_archs(LSAN_SUPPORTED_ARCH LSAN_TEST_ARCH)
+endif()
+
+foreach(arch ${LSAN_TEST_ARCH})
+  string(TOLOWER "-${arch}" LSAN_TEST_CONFIG_SUFFIX)
+  if(ANDROID OR ${arch} MATCHES "arm|aarch64")
+    # This is only true if we are cross-compiling.
+    # Build all tests with host compiler and use host tools.
+    set(LSAN_TEST_TARGET_CC ${COMPILER_RT_TEST_COMPILER})
+    set(LSAN_TEST_TARGET_CFLAGS ${COMPILER_RT_TEST_COMPILER_CFLAGS})
+  else()
+    get_target_flags_for_arch(${arch} LSAN_TEST_TARGET_CFLAGS)
+    string(REPLACE ";" " " LSAN_TEST_TARGET_CFLAGS "${LSAN_TEST_TARGET_CFLAGS}")
+  endif()
+
+  string(TOUPPER ${arch} ARCH_UPPER_CASE)
+  set(LSAN_LIT_TEST_MODE "Standalone")
+  set(CONFIG_NAME ${ARCH_UPPER_CASE}LsanConfig)
+
+  configure_lit_site_cfg(
+    ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
+    ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME}/lit.site.cfg)
+  list(APPEND LSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME})
+
+  set(CONFIG_NAME ${ARCH_UPPER_CASE}AsanConfig)
+  set(LSAN_LIT_TEST_MODE "AddressSanitizer")
+
+  configure_lit_site_cfg(
+    ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
+    ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME}/lit.site.cfg)
+  list(APPEND LSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME})
+endforeach()
 
 set(LSAN_TEST_DEPS ${SANITIZER_COMMON_LIT_TEST_DEPS})
 if(NOT COMPILER_RT_STANDALONE_BUILD)
   list(APPEND LSAN_TEST_DEPS lsan asan)
 endif()
 add_lit_testsuite(check-lsan "Running the LeakSanitizer tests"
-  ${CMAKE_CURRENT_BINARY_DIR}/LsanConfig
-  ${CMAKE_CURRENT_BINARY_DIR}/AsanConfig
+  ${LSAN_TESTSUITES}
   DEPENDS ${LSAN_TEST_DEPS})
 set_target_properties(check-lsan PROPERTIES FOLDER "LSan tests")
Index: test/lsan/lit.common.cfg
===================================================================
--- test/lsan/lit.common.cfg
+++ test/lsan/lit.common.cfg
@@ -27,8 +27,9 @@
   config.available_features.add('asan')
 else:
   lit_config.fatal("Unknown LSan test mode: %r" % lsan_lit_test_mode)
+config.name += config.name_suffix
 
-clang_cflags = ["-O0", "-m64"] + config.debug_info_flags
+clang_cflags = ["-O0", config.target_cflags] + config.debug_info_flags
 clang_cxxflags = config.cxx_mode_flags + clang_cflags
 clang_lsan_cflags = clang_cflags + lsan_cflags
 clang_lsan_cxxflags = clang_cxxflags + lsan_cflags
Index: test/lsan/lit.site.cfg.in
===================================================================
--- test/lsan/lit.site.cfg.in
+++ test/lsan/lit.site.cfg.in
@@ -1,7 +1,12 @@
+## Autogenerated by LLVM/Clang configuration.
+# Do not edit!
+
 # Load common config for all compiler-rt lit tests.
 lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configured")
 
 # Tool-specific config options.
+config.name_suffix = "@LSAN_TEST_CONFIG_SUFFIX@"
+config.target_cflags = "@LSAN_TEST_TARGET_CFLAGS@"
 config.lsan_lit_test_mode = "@LSAN_LIT_TEST_MODE@"
 
 # Load tool-specific config that would do the real work.