From 8f9e26da95273e2b6841d3030cabb940edefc4dd Mon Sep 17 00:00:00 2001
From: Dan Albert <danalbert@google.com>
Date: Fri, 16 Jan 2015 02:27:17 +0000
Subject: [PATCH] Remove triple detection from cmake.

This isn't actually used for anything, and is broken on Darwin
(currently causing build failures now that the triple is passed to aid
cross compiling). Rather than fix unused code, just remove it.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@226243 91177308-0d34-0410-b5e6-96231b3b80d8
(cherry picked from commit cbc84977aa0e3b73bff718e806e2ca1e43870a81)

Change-Id: I734aa3065ef7ece0c6582b3f00674e61171ea358
---
 CMakeLists.txt                | 18 ++----------
 cmake/Modules/GetTriple.cmake | 53 -----------------------------------
 2 files changed, 2 insertions(+), 69 deletions(-)
 delete mode 100644 cmake/Modules/GetTriple.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 51d9958a2..e9bacebc3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,21 +85,6 @@ set_property(CACHE LIBCXX_CXX_ABI PROPERTY STRINGS ;${CXXABIS})
 # Configure System
 #===============================================================================
 
-# Get triples.
-include(GetTriple)
-get_host_triple(LIBCXX_HOST_TRIPLE
-  LIBCXX_HOST_ARCH
-  LIBCXX_HOST_VENDOR
-  LIBCXX_HOST_OS
-  )
-set(LIBCXX_HOST_TRIPLE ${LIBCXX_HOST_TRIPLE} CACHE STRING "Host triple.")
-get_target_triple(LIBCXX_TARGET_TRIPLE
-  LIBCXX_TARGET_ARCH
-  LIBCXX_TARGET_VENDOR
-  LIBCXX_TARGET_OS
-  )
-set(LIBCXX_TARGET_TRIPLE ${LIBCXX_TARGET_TRIPLE} CACHE STRING "Target triple.")
-
 set(LIBCXX_COMPILER    ${CMAKE_CXX_COMPILER})
 set(LIBCXX_SOURCE_DIR  ${CMAKE_CURRENT_SOURCE_DIR})
 set(LIBCXX_BINARY_DIR  ${CMAKE_CURRENT_BINARY_DIR})
@@ -279,7 +264,8 @@ if (LIBCXX_BUILT_STANDALONE)
   endif()
 endif()
 
-list(APPEND LIBCXX_CXX_FLAGS "-target ${LIBCXX_TARGET_TRIPLE}")
+append_if(LIBCXX_CXX_FLAGS LIBCXX_TARGET_TRIPLE
+          "-target ${LIBCXX_TARGET_TRIPLE}")
 append_if(LIBCXX_CXX_FLAGS LIBCXX_SYSROOT "--sysroot ${LIBCXX_SYSROOT}")
 append_if(LIBCXX_CXX_FLAGS LIBCXX_GCC_TOOLCHAIN
           "-gcc-toolchain ${LIBCXX_GCC_TOOLCHAIN}")
diff --git a/cmake/Modules/GetTriple.cmake b/cmake/Modules/GetTriple.cmake
deleted file mode 100644
index c555931de..000000000
--- a/cmake/Modules/GetTriple.cmake
+++ /dev/null
@@ -1,53 +0,0 @@
-# Define functions to get the host and target triple.
-
-function(get_host_triple out out_arch out_vendor out_os)
-  # Get the architecture.
-  set(arch ${CMAKE_HOST_SYSTEM_PROCESSOR})
-  if (arch STREQUAL "x86")
-    set(arch "i686")
-  endif()
-  # Get the vendor.
-  if (${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Darwin")
-    set(vendor "apple")
-  else()
-    set(vendor "pc")
-  endif()
-  # Get os.
-  if (${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Windows")
-    set(os "win32")
-  else()
-    string(TOLOWER ${CMAKE_HOST_SYSTEM_NAME} os)
-  endif()
-  set(triple "${arch}-${vendor}-${os}")
-  set(${out} ${triple} PARENT_SCOPE)
-  set(${out_arch} ${arch} PARENT_SCOPE)
-  set(${out_vendor} ${vendor} PARENT_SCOPE)
-  set(${out_os} ${os} PARENT_SCOPE)
-  message(STATUS "Host triple: ${triple}")
-endfunction()
-
-function(get_target_triple out out_arch out_vendor out_os)
-  # Get the architecture.
-  set(arch ${CMAKE_SYSTEM_PROCESSOR})
-  if (arch STREQUAL "x86")
-    set(arch "i686")
-  endif()
-  # Get the vendor.
-  if (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
-    set(vendor "apple")
-  else()
-    set(vendor "pc")
-  endif()
-  # Get os.
-  if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
-    set(os "win32")
-  else()
-    string(TOLOWER ${CMAKE_SYSTEM_NAME} os)
-  endif()
-  set(triple "${arch}-${vendor}-${os}")
-  set(${out} ${triple} PARENT_SCOPE)
-  set(${out_arch} ${arch} PARENT_SCOPE)
-  set(${out_vendor} ${vendor} PARENT_SCOPE)
-  set(${out_os} ${os} PARENT_SCOPE)
-  message(STATUS "Target triple: ${triple}")
-endfunction()