[CMake] Install C++ ABI headers into the right location

This is a follow-up to r335809 and r337118. While libc++ headers are now
installed into the right location in both standard as well as multiarch
runtimes layout, turned out C++ ABI headers are still installed into the
old location in the latter case. This change addresses that.

Differential Revision: https://reviews.llvm.org/D49584

llvm-svn: 337630

diff --git a/libcxx/cmake/Modules/HandleLibCXXABI.cmake b/libcxx/cmake/Modules/HandleLibCXXABI.cmake
index 797b504..0eb70a7 100644 (file)
--- a/libcxx/cmake/Modules/HandleLibCXXABI.cmake
+++ b/libcxx/cmake/Modules/HandleLibCXXABI.cmake
@@ -32,14 +32,6 @@ macro(setup_abi_lib abidefines abilib abifiles abidirs)
   set(LIBCXX_CXX_ABI_LIBRARY ${abilib})
   set(LIBCXX_ABILIB_FILES ${abifiles})
 
-  # The place in the build tree where we store out-of-source headers.
-  file(MAKE_DIRECTORY "${LIBCXX_BUILD_HEADERS_ROOT}")
-  file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/include/c++/v1")
-  foreach(_d ${abidirs})
-    file(MAKE_DIRECTORY "${LIBCXX_BINARY_INCLUDE_DIR}/${_d}")
-    file(MAKE_DIRECTORY "${CMAKE_BINARY_DIR}/include/c++/v1/${_d}")
-  endforeach()
-
   foreach(fpath ${LIBCXX_ABILIB_FILES})
     set(found FALSE)
     foreach(incpath ${LIBCXX_CXX_ABI_INCLUDE_PATHS})
@@ -56,7 +48,7 @@ macro(setup_abi_lib abidefines abilib abifiles abidirs)
             COMMENT "Copying C++ ABI header ${fpath}...")
         list(APPEND abilib_headers "${dst}")
 
-        set(dst "${CMAKE_BINARY_DIR}/include/c++/v1/${dstdir}/${fpath}")
+        set(dst "${LIBCXX_HEADER_DIR}/include/c++/v1/${dstdir}/${fpath}")
         add_custom_command(OUTPUT ${dst}
             DEPENDS ${src}
             COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
@@ -65,7 +57,7 @@ macro(setup_abi_lib abidefines abilib abifiles abidirs)
 
         if (LIBCXX_INSTALL_HEADERS)
           install(FILES "${LIBCXX_BINARY_INCLUDE_DIR}/${fpath}"
-            DESTINATION ${LIBCXX_INSTALL_PATH}include/c++/v1/${dstdir}
+            DESTINATION ${LIBCXX_INSTALL_HEADER_PREFIX}include/c++/v1/${dstdir}
             COMPONENT cxx-headers
             PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ
             )