Index: make/platform/clang_linux.mk
===================================================================
--- make/platform/clang_linux.mk
+++ make/platform/clang_linux.mk
@@ -19,9 +19,9 @@
 # Only define configs if we detected a linux target.
 ifneq ($(findstring -linux-,$(CompilerTargetTriple)),)
 
-# Define configs only if arch in triple is i386 or x86_64
+# Define configs only if arch in triple is i386, i585, i686 or x86_64
 CompilerTargetArch := $(firstword $(subst -, ,$(CompilerTargetTriple)))
-ifeq ($(call contains,i386 x86_64,$(CompilerTargetArch)),true)
+ifeq ($(call contains,i386 i586 i686 x86_64,$(CompilerTargetArch)),true)
 
 # TryCompile compiler source flags
 # Returns exit code of running a compiler invocation.
@@ -35,7 +35,7 @@
     echo $$?)
 
 test_source = $(ProjSrcRoot)/make/platform/clang_linux_test_input.c
-ifeq ($(CompilerTargetArch),i386)
+ifeq ($(call contains,i386 i586 i686,$(CompilerTargetArch)),true)
   SupportedArches := i386
   ifeq ($(call TryCompile,$(CC),$(test_source),-m64),0)
     SupportedArches += x86_64