Index: libc/CMakeLists.txt
===================================================================
--- libc/CMakeLists.txt
+++ libc/CMakeLists.txt
@@ -40,26 +40,28 @@
                   --print-resource-dir not supported by host compiler")
 endif()
 
-option(LLVM_LIBC_ENABLE_LINTING "Enables linting of libc source files" ON)
-if(LLVM_LIBC_ENABLE_LINTING)
-  if("clang-tools-extra" IN_LIST LLVM_ENABLE_PROJECTS
-             AND "clang" IN_LIST LLVM_ENABLE_PROJECTS)
-    add_custom_target(lint-libc)
+if(NOT LLVM_TARGET_IS_CROSSCOMPILE_HOST)
+  option(LLVM_LIBC_ENABLE_LINTING "Enables linting of libc source files" ON)
+  if(LLVM_LIBC_ENABLE_LINTING)
+    if("clang-tools-extra" IN_LIST LLVM_ENABLE_PROJECTS
+               AND "clang" IN_LIST LLVM_ENABLE_PROJECTS)
+      add_custom_target(lint-libc)
+    else()
+      message(FATAL_ERROR "
+        'clang' and 'clang-tools-extra' are required in LLVM_ENABLE_PROJECTS to
+        lint llvm-libc. The linting step performs important checks to help prevent
+        the introduction of subtle bugs, but it may increase build times.
+
+        To disable linting set LLVM_LIBC_ENABLE_LINTING to OFF
+        (pass -DLLVM_LIBC_ENABLE_LINTING=OFF to cmake).")
+    endif()
   else()
-    message(FATAL_ERROR "
-      'clang' and 'clang-tools-extra' are required in LLVM_ENABLE_PROJECTS to
-      lint llvm-libc. The linting step performs important checks to help prevent
-      the introduction of subtle bugs, but it may increase build times.
+    message(WARNING "
+      Linting for libc is currently disabled.
 
-      To disable linting set LLVM_LIBC_ENABLE_LINTING to OFF
-      (pass -DLLVM_LIBC_ENABLE_LINTING=OFF to cmake).")
+      This is not recommended, to enable set LLVM_LIBC_ENABLE_LINTING to ON
+      (pass -DLLVM_LIBC_ENABLE_LINTING=ON to cmake).")
   endif()
-else()
-  message(WARNING "
-    Linting for libc is currently disabled.
-
-    This is not recommended, to enable set LLVM_LIBC_ENABLE_LINTING to ON
-    (pass -DLLVM_LIBC_ENABLE_LINTING=ON to cmake).")
 endif()
 
 include(CMakeParseArguments)
@@ -81,6 +83,10 @@
   list(APPEND TARGET_ENTRYPOINT_NAME_LIST ${entrypoint_name})
 endforeach()
 
+# We need to set up hdrgen first since other targets depend on it.
+add_subdirectory(utils/LibcTableGenUtil)
+add_subdirectory(utils/HdrGen)
+
 add_subdirectory(include)
 add_subdirectory(config)
 add_subdirectory(src)
Index: libc/cmake/modules/LLVMLibCHeaderRules.cmake
===================================================================
--- libc/cmake/modules/LLVMLibCHeaderRules.cmake
+++ libc/cmake/modules/LLVMLibCHeaderRules.cmake
@@ -89,14 +89,15 @@
 
   add_custom_command(
     OUTPUT ${out_file}
-    COMMAND $<TARGET_FILE:libc-hdrgen> -o ${out_file} --header ${ADD_GEN_HDR_GEN_HDR}
+    COMMAND ${LIBC_TABLEGEN_EXE} -o ${out_file} --header ${ADD_GEN_HDR_GEN_HDR}
             --def ${in_file} ${replacement_params} -I ${LIBC_SOURCE_DIR}
            ${ENTRYPOINT_NAME_LIST_ARG}
            ${LIBC_SOURCE_DIR}/config/${LIBC_TARGET_OS}/api.td
 
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     DEPENDS ${in_file} ${fq_data_files} ${td_includes}
-            ${LIBC_SOURCE_DIR}/config/${LIBC_TARGET_OS}/api.td libc-hdrgen
+            ${LIBC_SOURCE_DIR}/config/${LIBC_TARGET_OS}/api.td
+            ${LIBC_TABLEGEN_EXE} ${LIBC_TABLEGEN_TARGET}
   )
 
   get_fq_target_name(${target_name} fq_target_name)
Index: libc/utils/CMakeLists.txt
===================================================================
--- libc/utils/CMakeLists.txt
+++ libc/utils/CMakeLists.txt
@@ -1,7 +1,5 @@
 add_subdirectory(CPP)
 add_subdirectory(FPUtil)
-add_subdirectory(LibcTableGenUtil)
-add_subdirectory(HdrGen)
 add_subdirectory(MPFRWrapper)
 add_subdirectory(testutils)
 add_subdirectory(tools)
Index: libc/utils/HdrGen/CMakeLists.txt
===================================================================
--- libc/utils/HdrGen/CMakeLists.txt
+++ libc/utils/HdrGen/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(LLVM_LINK_COMPONENTS Support)
 
-add_tablegen(libc-hdrgen llvm-libc
+add_tablegen(libc-hdrgen LIBC
   Command.h
   Command.cpp
   Generator.cpp