From be7a567a8eab50e6a0a10b3409850ddd0d529a6f Mon Sep 17 00:00:00 2001
From: Hiroshi Hatake <hatake@clear-code.com>
Date: Mon, 16 Dec 2019 17:41:45 +0900
Subject: Compute LLVM_LIBDIR_SUFFIX correctly on multiarch environment

Co-authored-by: INAJIMA Daisuke <inajima@soum.co.jp>
---
 recipes-devtools/clang/clang.inc          | 18 ++++++++++++++++++
 recipes-devtools/clang/compiler-rt_git.bb |  1 +
 recipes-devtools/clang/libcxx_git.bb      |  2 +-
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/recipes-devtools/clang/clang.inc b/recipes-devtools/clang/clang.inc
index 4c028b4..b631c0e4 100644
--- a/recipes-devtools/clang/clang.inc
+++ b/recipes-devtools/clang/clang.inc
@@ -18,4 +18,22 @@ CLANGMD5SUM = "ff42885ed2ab98f1ecb8c1fc41205343"
 LLDMD5SUM = "ae7dc7c027b1fa89b5b013d391d3ee2b"
 LLDBMD5SUM = "2e0d44968471fcde980034dbb826bea9"
 
+def get_libdir_suffix(d, arch_var):
+    import re
+    multilibs = (d.getVar("MULTILIB_VARIANTS") or "").split()
+    if multilibs:
+        a = d.getVar(arch_var, True)
+        if   re.match('(i.86|athlon)$', a):          return '32'
+        elif re.match('x86.64$', a):                 return '64'
+        elif re.match('(arm|armbe)$', a):            return '32'
+        elif re.match('(aarch64|aarch64_be)$', a):   return '64'
+        elif re.match('mips(isa|)32(r6|)(el|)$', a): return '32'
+        elif re.match('mips(isa|)64(r6|)(el|)$', a): return '64'
+        elif re.match('p(pc|owerpc)', a):            return '32'
+        elif re.match('p(pc|owerpc)64', a):          return '64'
+    else:
+        return ''
+
+LLVM_LIBDIR_SUFFIX="${@get_libdir_suffix(d, 'TARGET_ARCH')}"
+
 require common.inc
diff --git a/recipes-devtools/clang/compiler-rt_git.bb b/recipes-devtools/clang/compiler-rt_git.bb
index e76a560..f331a07 100644
--- a/recipes-devtools/clang/compiler-rt_git.bb
+++ b/recipes-devtools/clang/compiler-rt_git.bb
@@ -31,6 +31,7 @@ EXTRA_OECMAKE += "-DCOMPILER_RT_STANDALONE_BUILD=OFF \
                   -DCMAKE_RANLIB=${STAGING_BINDIR_TOOLCHAIN}/${TARGET_PREFIX}llvm-ranlib \
                   -DCMAKE_AR=${STAGING_BINDIR_TOOLCHAIN}/${TARGET_PREFIX}llvm-ar \
                   -DCMAKE_NM=${STAGING_BINDIR_TOOLCHAIN}/${TARGET_PREFIX}llvm-nm \
+                  -DLLVM_LIBDIR_SUFFIX=${LLVM_LIBDIR_SUFFIX} \
                   -G Ninja ${S}/llvm \
 "
 
diff --git a/recipes-devtools/clang/libcxx_git.bb b/recipes-devtools/clang/libcxx_git.bb
index 2d530c5..01d9260 100644
--- a/recipes-devtools/clang/libcxx_git.bb
+++ b/recipes-devtools/clang/libcxx_git.bb
@@ -51,7 +51,7 @@ EXTRA_OECMAKE += "\
                   -DCMAKE_NM=${STAGING_BINDIR_TOOLCHAIN}/${NM} \
                   -DCMAKE_RANLIB=${STAGING_BINDIR_TOOLCHAIN}/${RANLIB} \
                   -DLLVM_ENABLE_PROJECTS='libcxx;libcxxabi;libunwind' \
-                  -DLLVM_LIBDIR_SUFFIX=${@d.getVar('baselib').replace('lib', '')} \
+                  -DLLVM_LIBDIR_SUFFIX=${LLVM_LIBDIR_SUFFIX} \
                   -G Ninja \
                   ${S}/llvm \
 "
-- 
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