[bazel][libc] Adjust for 4f1fe19

This also required a build rule for error_to_string, so add that too.

Author: d0k

utils/bazel/llvm-project-overlay/libc/BUILD.bazel

@@ -226,6 +226,17 @@ libc_support_library(
     ],
 )
 
+libc_support_library(
+    name = "__support_cpp_stringstream",
+    hdrs = ["src/__support/CPP/stringstream.h"],
+    deps = [
+        ":__support_cpp_span",
+        ":__support_cpp_string_view",
+        ":__support_cpp_type_traits",
+        ":__support_integer_to_string",
+    ],
+)
+
 libc_support_library(
     name = "__support_cpp_string",
     hdrs = ["src/__support/CPP/string.h"],
@@ -805,6 +816,28 @@ libc_support_library(
     ],
 )
 
+libc_support_library(
+    name = "__support_stringutil",
+    srcs = glob(["src/__support/StringUtil/tables/**/*.h"]) + [
+        "src/__support/StringUtil/error_to_string.cpp",
+        "src/__support/StringUtil/message_mapper.h",
+        "src/__support/StringUtil/signal_to_string.cpp",
+    ],
+    hdrs = [
+        "src/__support/StringUtil/error_to_string.h",
+        "src/__support/StringUtil/signal_to_string.h",
+    ],
+    deps = [
+        ":__support_cpp_array",
+        ":__support_cpp_span",
+        ":__support_cpp_string_view",
+        ":__support_cpp_stringstream",
+        ":__support_integer_to_string",
+        ":errno",
+        ":libc_root",
+    ],
+)
+
 libc_support_library(
     name = "__support_threads_mutex",
     hdrs = [

utils/bazel/llvm-project-overlay/libc/test/UnitTest/BUILD.bazel

@@ -29,6 +29,7 @@ cc_library(
         "LibcTestMain.cpp",
     ],
     hdrs = [
+        "ErrnoSetterMatcher.h",
         "ExecuteFunction.h",
         "LibcTest.h",
         "PlatformDefs.h",
@@ -43,7 +44,11 @@ cc_library(
         "//libc:__support_cpp_string",
         "//libc:__support_cpp_string_view",
         "//libc:__support_cpp_type_traits",
+        "//libc:__support_fputil_fp_bits",
+        "//libc:__support_macros_properties_architectures",
+        "//libc:__support_stringutil",
         "//libc:__support_uint128",
+        "//libc:errno",
         "//libc:libc_root",
         "//llvm:Support",
     ],