[cmake] Use `CMAKE_INSTALL_LIBDIR` too

We held off on this before as `LLVM_LIBDIR_SUFFIX` conflicted with it.
Now we return this.

`LLVM_LIBDIR_SUFFIX` is kept as a deprecated way to set
`CMAKE_INSTALL_LIBDIR`. The other `*_LIBDIR_SUFFIX` are just removed
entirely.

I imagine this is too potentially-breaking to make LLVM 15. That's fine.
I have a more minimal version of this in the disto (NixOS) patches for
LLVM 15 (like previous versions). This more expansive version I will
test harder after the release is cut.

Reviewed By: sebastian-ne, ldionne, #libc, #libc_abi

Differential Revision: https://reviews.llvm.org/D130586

3 files changed, 6 insertions, 6 deletions

diff --git a/polly/cmake/CMakeLists.txt b/polly/cmake/CMakeLists.txt
index 4c528d5..34186e4 100644
--- a/polly/cmake/CMakeLists.txt
+++ b/polly/cmake/CMakeLists.txt
@@ -7,12 +7,12 @@ include(FindPrefixFromConfig)
 set(POLLY_INSTALL_PACKAGE_DIR "${CMAKE_INSTALL_PACKAGEDIR}/polly" CACHE STRING
   "Path for CMake subdirectory for Polly (defaults to '${CMAKE_INSTALL_PACKAGEDIR}/polly')")
 # CMAKE_INSTALL_PACKAGEDIR might be absolute, so don't reuse below.
-set(polly_cmake_builddir "${POLLY_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/polly")
+set(polly_cmake_builddir "${POLLY_BINARY_DIR}/lib/cmake/polly")
 
 set(LLVM_INSTALL_PACKAGE_DIR "${CMAKE_INSTALL_PACKAGEDIR}/llvm" CACHE STRING
   "Path for CMake subdirectory for LLVM (defaults to '${CMAKE_INSTALL_PACKAGEDIR}/llvm')")
 # CMAKE_INSTALL_PACKAGEDIR might be absolute, so don't reuse below.
-set(llvm_cmake_builddir "${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}/cmake/llvm")
+set(llvm_cmake_builddir "${LLVM_BINARY_DIR}/lib/cmake/llvm")
 
 if (CMAKE_CONFIGURATION_TYPES)
   set(POLLY_EXPORTS_FILE_NAME "PollyExports-$<LOWER_CASE:$<CONFIG>>.cmake")
@@ -93,7 +93,7 @@ unset(POLLY_EXPORTS)
 find_prefix_from_config(POLLY_CONFIG_CODE POLLY_INSTALL_PREFIX "${POLLY_INSTALL_PACKAGE_DIR}")
 extend_path(POLLY_CONFIG_LLVM_CMAKE_DIR "\${POLLY_INSTALL_PREFIX}" "${LLVM_INSTALL_PACKAGE_DIR}")
 extend_path(POLLY_CONFIG_CMAKE_DIR "\${POLLY_INSTALL_PREFIX}" "${POLLY_INSTALL_PACKAGE_DIR}")
-extend_path(POLLY_CONFIG_LIBRARY_DIRS "\${POLLY_INSTALL_PREFIX}" "lib${LLVM_LIBDIR_SUFFIX}")
+extend_path(POLLY_CONFIG_LIBRARY_DIRS "\${POLLY_INSTALL_PREFIX}" "${CMAKE_INSTALL_LIBDIR}")
 extend_path(base_includedir "\${POLLY_INSTALL_PREFIX}" "${CMAKE_INSTALL_INCLUDEDIR}")
 if (POLLY_BUNDLED_ISL)
   set(POLLY_CONFIG_INCLUDE_DIRS
diff --git a/polly/cmake/polly_macros.cmake b/polly/cmake/polly_macros.cmake
index 518a09b..afc8e07 100644
--- a/polly/cmake/polly_macros.cmake
+++ b/polly/cmake/polly_macros.cmake
@@ -44,8 +44,8 @@ macro(add_polly_library name)
   if (NOT LLVM_INSTALL_TOOLCHAIN_ONLY OR ${name} STREQUAL "LLVMPolly")
     install(TARGETS ${name}
       EXPORT LLVMExports
-      LIBRARY DESTINATION lib${LLVM_LIBDIR_SUFFIX}
-      ARCHIVE DESTINATION lib${LLVM_LIBDIR_SUFFIX})
+      LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+      ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}")
   endif()
   set_property(GLOBAL APPEND PROPERTY LLVM_EXPORTS ${name})
 endmacro(add_polly_library)
diff --git a/polly/test/CMakeLists.txt b/polly/test/CMakeLists.txt
index 358d7a5..45cd2a6 100644
--- a/polly/test/CMakeLists.txt
+++ b/polly/test/CMakeLists.txt
@@ -46,7 +46,7 @@ endif ()
 
 set(LLVM_BINARY_DIR "${LLVM_BINARY_DIR}")
 set(LLVM_TOOLS_DIR "${LLVM_TOOLS_BINARY_DIR}")
-set(LLVM_LIBS_DIR "${LLVM_BINARY_DIR}/lib${LLVM_LIBDIR_SUFFIX}")
+set(LLVM_LIBS_DIR "${LLVM_BINARY_DIR}/lib")
 if (CMAKE_LIBRARY_OUTPUT_DIRECTORY)
   set(POLLY_LIB_DIR ${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
 else()