Index: lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/Makefile
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/Makefile
+++ lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/Makefile
@@ -0,0 +1,20 @@
+LEVEL = ../../make
+C_SOURCES := main.c
+LD_EXTRAS += -Wl,--build-id=sha1
+
+all: stripped.out
+
+.PHONY: .build-id
+stripped.out .build-id: a.out
+	$(OBJCOPY) -j .note.gnu.build-id -O binary $< tmp
+	rm -rf .build-id
+	fn=`od -An -tx1 <tmp|tr -d ' \n'|sed -e 's/^.\{32\}//' -e 's#^..#.build-id/&/#' -e 's#$$#.debug#'` && \
+	mkdir -p `dirname $$fn` && \
+	$(OBJCOPY) --only-keep-debug $< $$fn && \
+	$(OBJCOPY) --strip-all --add-gnu-debuglink=$$fn $< stripped.out
+	$(RM) tmp
+
+clean::
+	$(RM) -r stripped.out .build-id
+
+include $(LEVEL)/Makefile.rules
Index: lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/TestTargetSymbolsBuildidCase.py
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/TestTargetSymbolsBuildidCase.py
+++ lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/TestTargetSymbolsBuildidCase.py
@@ -0,0 +1,21 @@
+""" Testing separate debug info loading by its .build-id. """
+import os
+import time
+import lldb
+import sys
+from lldbsuite.test.decorators import *
+from lldbsuite.test.lldbtest import *
+from lldbsuite.test import lldbutil
+
+
+class TestTargetSymbolsBuildidCase(TestBase):
+
+    mydir = TestBase.compute_mydir(__file__)
+
+    @no_debug_info_test  # Prevent the genaration of the dwarf version of this test
+    @skipUnlessPlatform(['linux'])
+    def test_target_symbols_buildid_case(self):
+        self.build(clean=True)
+        exe = self.getBuildArtifact("stripped.out")
+
+        lldbutil.run_to_name_breakpoint(self, "main", exe_name = exe)
Index: lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/main.c
===================================================================
--- lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/main.c
+++ lldb/trunk/packages/Python/lldbsuite/test/linux/buildidcase/main.c
@@ -0,0 +1,3 @@
+int main() {
+  return 0;
+}
Index: lldb/trunk/source/Host/common/Symbols.cpp
===================================================================
--- lldb/trunk/source/Host/common/Symbols.cpp
+++ lldb/trunk/source/Host/common/Symbols.cpp
@@ -245,6 +245,8 @@
       // Some debug files are stored in the .build-id directory like this:
       //   /usr/lib/debug/.build-id/ff/e7fe727889ad82bb153de2ad065b2189693315.debug
       uuid_str = module_uuid.GetAsString("");
+      std::transform(uuid_str.begin(), uuid_str.end(), uuid_str.begin(),
+          ::tolower);
       uuid_str.insert(2, 1, '/');
       uuid_str = uuid_str + ".debug";
     }