<div dir="ltr">clang-3.4? Do you use ToT Clang for that build?<div><br></div><div>FWIW, I think the driver shouldn't print unused-argument warning in this case.</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Jan 2, 2015 at 11:22 AM, David Blaikie <span dir="ltr"><<a href="mailto:dblaikie@gmail.com" target="_blank">dblaikie@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Seems to be breaking my build?<br><br><div>[54/816] Building C object projects/compiler-rt/lib/tsan/CMakeFiles/clang_rt.tsan-x86_64.dir/rtl/tsan_rtl_amd64.S.o</div><div>FAILED: /usr/local/google/home/blaikie/install/bin/clang  -D_DEBUG -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -fcolor-diagnostics -fPIC -Wall -W -Wno-unused-parameter -Wwrite-strings -Wmissing-field-initializers -pedantic -Wno-long-long -Wcovered-switch-default -Werror -fcolor-diagnostics -ffunction-sections -fdata-sections -Wall -Werror -g -Iprojects/compiler-rt/lib/tsan -I/usr/local/google/home/blaikie/dev/llvm/src/projects/compiler-rt/lib/tsan -Iinclude -I/usr/local/google/home/blaikie/dev/llvm/src/include -I/usr/local/google/home/blaikie/dev/llvm/src/projects/compiler-rt/lib/tsan/..    -gsplit-dwarf  -m64 -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fvisibility=hidden -fno-function-sections -fno-lto -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -Wno-non-virtual-dtor -fPIE -fno-rtti -Wframe-larger-than=512 -Wglobal-constructors -MMD -MT projects/compiler-rt/lib/tsan/CMakeFiles/clang_rt.tsan-x86_64.dir/rtl/tsan_rtl_amd64.S.o -MF projects/compiler-rt/lib/tsan/CMakeFiles/clang_rt.tsan-x86_64.dir/rtl/tsan_rtl_amd64.S.o.d -o projects/compiler-rt/lib/tsan/CMakeFiles/clang_rt.tsan-x86_64.dir/rtl/tsan_rtl_amd64.S.o   -c /usr/local/google/home/blaikie/dev/llvm/src/projects/compiler-rt/lib/tsan/rtl/tsan_rtl_amd64.S</div><div>clang-3.4: error: argument unused during compilation: '-fno-lto'</div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Wed, Dec 31, 2014 at 10:20 AM, Rafael Espindola <span dir="ltr"><<a href="mailto:rafael.espindola@gmail.com" target="_blank">rafael.espindola@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Author: rafael<br>
Date: Wed Dec 31 12:20:52 2014<br>
New Revision: 225049<br>
<br>
URL: <a href="http://llvm.org/viewvc/llvm-project?rev=225049&view=rev" target="_blank">http://llvm.org/viewvc/llvm-project?rev=225049&view=rev</a><br>
Log:<br>
Avoid building compiler-rt with LTO.<br>
<br>
During a LTO we still need to build a compiler_rt with regular object files<br>
in the .a.<br>
<br>
Modified:<br>
    compiler-rt/trunk/CMakeLists.txt<br>
    compiler-rt/trunk/cmake/config-ix.cmake<br>
<br>
Modified: compiler-rt/trunk/CMakeLists.txt<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/CMakeLists.txt?rev=225049&r1=225048&r2=225049&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/CMakeLists.txt?rev=225049&r1=225048&r2=225049&view=diff</a><br>
==============================================================================<br>
--- compiler-rt/trunk/CMakeLists.txt (original)<br>
+++ compiler-rt/trunk/CMakeLists.txt Wed Dec 31 12:20:52 2014<br>
@@ -231,6 +231,7 @@ append_list_if(COMPILER_RT_HAS_FUNWIND_T<br>
 append_list_if(COMPILER_RT_HAS_FNO_STACK_PROTECTOR_FLAG -fno-stack-protector SANITIZER_COMMON_CFLAGS)<br>
 append_list_if(COMPILER_RT_HAS_FVISIBILITY_HIDDEN_FLAG -fvisibility=hidden SANITIZER_COMMON_CFLAGS)<br>
 append_list_if(COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG -fno-function-sections SANITIZER_COMMON_CFLAGS)<br>
+append_list_if(COMPILER_RT_HAS_FNO_LTO_FLAG -fno-lto SANITIZER_COMMON_CFLAGS)<br>
<br>
 if(MSVC)<br>
   # Replace the /MD[d] flags with /MT.<br>
<br>
Modified: compiler-rt/trunk/cmake/config-ix.cmake<br>
URL: <a href="http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/cmake/config-ix.cmake?rev=225049&r1=225048&r2=225049&view=diff" target="_blank">http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/cmake/config-ix.cmake?rev=225049&r1=225048&r2=225049&view=diff</a><br>
==============================================================================<br>
--- compiler-rt/trunk/cmake/config-ix.cmake (original)<br>
+++ compiler-rt/trunk/cmake/config-ix.cmake Wed Dec 31 12:20:52 2014<br>
@@ -16,6 +16,7 @@ check_cxx_compiler_flag(-ffreestanding<br>
 check_cxx_compiler_flag("-Werror -fno-function-sections" COMPILER_RT_HAS_FNO_FUNCTION_SECTIONS_FLAG)<br>
 check_cxx_compiler_flag(-std=c++11           COMPILER_RT_HAS_STD_CXX11_FLAG)<br>
 check_cxx_compiler_flag(-ftls-model=initial-exec COMPILER_RT_HAS_FTLS_MODEL_INITIAL_EXEC)<br>
+check_cxx_compiler_flag(-fno-lto             COMPILER_RT_HAS_FNO_LTO_FLAG)<br>
<br>
 check_cxx_compiler_flag(/GR COMPILER_RT_HAS_GR_FLAG)<br>
 check_cxx_compiler_flag(/GS COMPILER_RT_HAS_GS_FLAG)<br>
<br>
<br>
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</blockquote></div><br></div>
</div></div><br>_______________________________________________<br>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature"><div dir="ltr">Alexey Samsonov<br><a href="mailto:vonosmas@gmail.com" target="_blank">vonosmas@gmail.com</a></div></div>
</div>