diff --git a/libcxx/CMakeLists.txt b/libcxx/CMakeLists.txt
--- a/libcxx/CMakeLists.txt
+++ b/libcxx/CMakeLists.txt
@@ -407,8 +407,8 @@
 set(LIBCXX_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
     "Path where built libc++ runtime libraries should be installed.")
 
-set(LIBCXX_SHARED_OUTPUT_NAME "c++" CACHE STRING
-    "Output name for the shared libc++ runtime library.")
+set(LIBCXX_SHARED_OUTPUT_NAME "c++" CACHE STRING "Output name for the shared libc++ runtime library.")
+set(LIBCXX_STATIC_OUTPUT_NAME "c++" CACHE STRING "Output name for the static libc++ runtime library.")
 
 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
   set(LIBCXX_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
diff --git a/libcxx/src/CMakeLists.txt b/libcxx/src/CMakeLists.txt
--- a/libcxx/src/CMakeLists.txt
+++ b/libcxx/src/CMakeLists.txt
@@ -300,7 +300,7 @@
     PROPERTIES
       COMPILE_FLAGS "${LIBCXX_COMPILE_FLAGS}"
       LINK_FLAGS    "${LIBCXX_LINK_FLAGS}"
-      OUTPUT_NAME   "c++"
+      OUTPUT_NAME   "${LIBCXX_STATIC_OUTPUT_NAME}"
   )
   cxx_add_common_build_flags(cxx_static)
   cxx_set_common_defines(cxx_static)
diff --git a/libcxxabi/CMakeLists.txt b/libcxxabi/CMakeLists.txt
--- a/libcxxabi/CMakeLists.txt
+++ b/libcxxabi/CMakeLists.txt
@@ -79,6 +79,9 @@
 option(LIBCXXABI_INSTALL_HEADERS "Install the libc++abi headers." ON)
 option(LIBCXXABI_INSTALL_LIBRARY "Install the libc++abi library." ON)
 
+set(LIBCXXABI_SHARED_OUTPUT_NAME "c++abi" CACHE STRING "Output name for the shared libc++abi runtime library.")
+set(LIBCXXABI_STATIC_OUTPUT_NAME "c++abi" CACHE STRING "Output name for the static libc++abi runtime library.")
+
 set(LIBCXXABI_INSTALL_INCLUDE_DIR "${CMAKE_INSTALL_INCLUDEDIR}/c++/v1" CACHE PATH "Path to install the libc++abi headers at.")
 
 if(LLVM_LIBRARY_OUTPUT_INTDIR)
diff --git a/libcxxabi/src/CMakeLists.txt b/libcxxabi/src/CMakeLists.txt
--- a/libcxxabi/src/CMakeLists.txt
+++ b/libcxxabi/src/CMakeLists.txt
@@ -187,7 +187,7 @@
   set_target_properties(cxxabi_shared
     PROPERTIES
       LINK_FLAGS "${LIBCXXABI_LINK_FLAGS}"
-      OUTPUT_NAME "c++abi"
+      OUTPUT_NAME "${LIBCXXABI_SHARED_OUTPUT_NAME}"
       SOVERSION "1"
       VERSION "${LIBCXXABI_LIBRARY_VERSION}"
   )
@@ -285,7 +285,7 @@
   set_target_properties(cxxabi_static
     PROPERTIES
       LINK_FLAGS "${LIBCXXABI_LINK_FLAGS}"
-      OUTPUT_NAME "c++abi"
+      OUTPUT_NAME "${LIBCXXABI_STATIC_OUTPUT_NAME}"
     )
   target_link_libraries(cxxabi_static
     PUBLIC cxxabi_static_objects
diff --git a/libunwind/CMakeLists.txt b/libunwind/CMakeLists.txt
--- a/libunwind/CMakeLists.txt
+++ b/libunwind/CMakeLists.txt
@@ -111,6 +111,9 @@
 set(LIBUNWIND_INSTALL_RUNTIME_DIR "${CMAKE_INSTALL_BINDIR}" CACHE PATH
     "Path where built libunwind runtime libraries should be installed.")
 
+set(LIBUNWIND_SHARED_OUTPUT_NAME "unwind" CACHE STRING "Output name for the shared libunwind runtime library.")
+set(LIBUNWIND_STATIC_OUTPUT_NAME "unwind" CACHE STRING "Output name for the static libunwind runtime library.")
+
 if(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR AND NOT APPLE)
   set(LIBUNWIND_LIBRARY_DIR ${LLVM_LIBRARY_OUTPUT_INTDIR}/${LLVM_DEFAULT_TARGET_TRIPLE})
   set(LIBUNWIND_INSTALL_LIBRARY_DIR lib${LLVM_LIBDIR_SUFFIX}/${LLVM_DEFAULT_TARGET_TRIPLE} CACHE PATH
diff --git a/libunwind/src/CMakeLists.txt b/libunwind/src/CMakeLists.txt
--- a/libunwind/src/CMakeLists.txt
+++ b/libunwind/src/CMakeLists.txt
@@ -161,7 +161,7 @@
     PROPERTIES
       LINK_FLAGS "${LIBUNWIND_LINK_FLAGS}"
       LINKER_LANGUAGE C
-      OUTPUT_NAME "unwind"
+      OUTPUT_NAME "${LIBUNWIND_SHARED_OUTPUT_NAME}"
       VERSION "1.0"
       SOVERSION "1"
   )
@@ -201,7 +201,7 @@
     PROPERTIES
       LINK_FLAGS "${LIBUNWIND_LINK_FLAGS}"
       LINKER_LANGUAGE C
-      OUTPUT_NAME "unwind"
+      OUTPUT_NAME "${LIBUNWIND_STATIC_OUTPUT_NAME}"
   )
 
   list(APPEND LIBUNWIND_BUILD_TARGETS "unwind_static")