search for: lclang_rt

Hi Daniel, I'm trying to use the feature you added to Clang a long time ago (2011), the --rtlib=compiler-rt and it doesn't seem to do anything. Now that I have compiler-rt building on ARM and the archive libraries under /lib, I'd like to replace -lgcc with -lclang_rt, but this command line: $ clang --rtlib=compiler-rt -Wl,-lclang_rt foo.c Gives me the warning/errors: clang-3.5: warning: argument unused during compilation: '--rtlib=compiler-rt' /usr/bin/ld: error: cannot find -lclang_rt The library path for compiler-rt is missing and -lgcc is still th...

...add_compiler_rt_test(XRayUnitTests ${testname} 45 OBJECTS ${TEST_OBJECTS} 46 DEPS ${TEST_DEPS} 47 LINK_FLAGS ${TARGET_LINK_FLAGS} 48 -lstdc++ -lm ${CMAKE_THREAD_LIBS_INIT} 49 -lpthread 50 -L${COMPILER_RT_LIBRARY_OUTPUT_DIR} -lclang_rt.xray-fdr-${arch}) 51 endif()

...n: http://llvm.org/viewvc/llvm-project?view=revision&revision=274747 and the only thing I can think could have caused it is the change in librry order: - lit_extra_opts={'link_flags': '"-lc++abi -lc -lm -lpthread -lunwind -ldl -L/opt/llvm/lib/clang/3.6.0/lib/linux -lclang_rt.builtins-arm"'}, + lit_extra_opts={'link_flags': '"-lc++abi -lpthread -lunwind -ldl -lc -lm -L/opt/llvm/lib/clang/3.6.0/lib/linux -lclang_rt.builtins-arm"'}, Any ideas? cheers, -renato

...39;t find that library > > in my build directory) I tried building it from LLVM source. > > You can take these from an arm-none-eabi toolchain. The GCC equivalent of clang_rt.builtins-arm.a is libgcc.a, one way to use these with clang is use one of the options that suppress -lc -lm and -lclang_rt.builtins-arm.a I think either --nostdlib or --nodefaultlibs will do that. You'll need to tell clang where to find these in your arm-none-eabi toolchain. > > > To generate the library, I tried generating builtins by following the guide at: > > https://llvm.org/docs/HowToCrossCompi...

...LEASE_500/final) Target: armv6m-none--eabi Thread model: single InstalledDir: clang+llvm-5.0.0-linux-x86_64-ubuntu16.04/bin "clang+llvm-5.0.0-linux-x86_64-ubuntu16.04/bin/ld.lld" main.o a.o reset.o -Bstatic -Lclang+llvm-5.0.0-linux-x86_64-ubuntu16.04/lib/clang/5.0.0/lib/baremetal -lc -lm -lclang_rt.builtins-armv6m.a -o main clang+llvm-5.0.0-linux-x86_64-ubuntu16.04/bin/ld.lld: error: unable to find library -lc clang+llvm-5.0.0-linux-x86_64-ubuntu16.04/bin/ld.lld: error: unable to find library -lm clang+llvm-5.0.0-linux-x86_64-ubuntu16.04/bin/ld.lld: error: unable to find library -lclang_rt.bu...

...nd these libraries. ./bin/clang++ -target arm-none-eabi -mcpu=cortex-m4 ./temp.cpp -L ./lib/ -L ./libexec/ -L ../build3_v7m/lib/ ld.lld: error: unable to find library -lunwind ld.lld: error: unable to find library -lc ld.lld: error: unable to find library -lm ld.lld: error: unable to find library -lclang_rt.builtins-arm.a I am guessing I can borrow libraries such as lc and lm from GCC arm-none-eabi*, but for clang_rt.builtins-arm.a (which I thought should've been built with LLVM build but I couldn't find that library in my build directory) I tried building it from LLVM source. To generate t...

...er_queue_test.cc.x86_64.o xray_unit_test_main.cc.x86_64.o gtest-all.cc.x86_64.o -o /home/hanzer/build/build_llvm/projects/compiler-rt/lib/xray/tests/unit/XRayBufferQueueTest -Wl,-allow-shlib-undefined -m64 -lstdc++ -lm -lpthread -lpthread -L/home/hanzer/build/build_llvm/./lib/clang/4.0.0/lib/linux -lclang_rt.xray-fdr-x86_64 FAILED: projects/compiler-rt/lib/xray/tests/unit/CMakeFiles/XRayBufferQueueTest cd /home/hanzer/build/build_llvm/projects/compiler-rt/lib/xray/tests/unit && /home/hanzer/build/build_llvm/./bin/clang buffer_queue_test.cc.x86_64.o xray_unit_test_main.cc.x86_64.o gtest-all.cc....

...v/llvm/build/clang/debug/split/notypes/nostandalone/projects/compiler-rt/lib/xray/tests/unit/XRayFDRLoggingTest-x86_64 -Wl,-allow-shlib-undefined -m64 -lstdc++ -lm -lpthread -lpthread -L/usr/local/google/home/blaikie/dev/llvm/build/clang/debug/split/notypes/nostandalone/./lib/clang/5.0.0/lib/linux -lclang_rt.xray-x86_64 -latomic -ldl -lrt /usr/local/google/home/blaikie/install/bin/../lib/gcc/x86_64-pc-linux-gnu/6.1.0/../../../../include/c++/6.1.0/system_error:197: error: undefined reference to 'std::_V2::generic_category()' /usr/local/google/home/blaikie/install/bin/../lib/gcc/x86_64-pc-linux-g...

LGTM. I will commit. On Oct 10, 2012, at 1:20 PM, Shuxin Yang <shuxin.llvm at gmail.com> wrote: > Hi, > > The attached is the fix to radar://11663049. The optimization can be outlined by following rules: > > (select (x != c), e, c) -> select (x != c), e, x), > (select (x == c), c, e) -> select (x == c), x, e) > where the <c> is an integer

...ntain the instructions that you are looking for. Unfortunately it looks like the runtimes method does not produce the library names that match what the driver is expecting: For example with --target=armv7m-none-eabi I get with -v -L/path/to/my/clang/build/dir/lib/clang/9.0.0/lib/baremetal -lc -lm -lclang_rt.builtins-armv7m.a I suggest renaming the files when copying them to the /path/to/my/clang/build/dir/lib/clang/9.0.0/lib/baremetal dir. libclang_rt.builtins-armv6m.a libclang_rt.builtins-armv7m.a libclang_rt.builtins-armv7em.a When I build the builtins using the standalone build then I get the cor...

Hello Christian, I'd expect that adding the library paths (-L) from gcc -v should fix the unable to find -lc, -lm but it won't fix the -lclang_rt.builtins-armv6m.a . To get clang_rt.builtins-armv6m.a you will need to cross compile compiler-rt for v6m and copy it to /usr/local/myclang/lib/clang/8.0.0/lib/baremetal . Beware that building compiler-rt for v6m does need quite a bit of fighting cmake (https://llvm.org/docs/HowToCrossCompileBuiltin...

...onsisting of barehelloCLANG.c and a small io.h + io.c) , but the > linking part of the compilation resulted in this: > > root at christian-forschung-virtual-machine:/home/progs# clang -v > --target=armv6-none-eabi -L > /home/llvm_all/buildrecipe/lib/clang/8.0.0/armv6m-none-eabi > -lclang_rt.builtins.arm barehelloCLANG.o io.o -o helloCLANGstatic > -static -fuse-ld=lld > clang version 8.0.0 (https://git.llvm.org/git/clang.git/ > a152c7a4b7ba8f4cb9532ead9a38a7121db43d50) > (https://git.llvm.org/git/llvm.git/ > 1959ce6f3e01241919968ac1911fd45660239d23) > Target: armv6-no...

Hi, The attached is the fix to radar://11663049. The optimization can be outlined by following rules: (select (x != c), e, c) -> select (x != c), e, x), (select (x == c), c, e) -> select (x == c), x, e) where the <c> is an integer constant. The reason for this change is that : on x86, conditional-move-from-constant needs two instructions; however,

r247321 refactors the code so that it should build on Mac. I haven't actually tested it on Mac -- so please help me and send follow up patches if needed. check-fuzzer will still fail because some of the libFuzzer tests require dfsan. I'd use some help from someone with a Mac to modify lib/Fuzzer/test/CMakeLists.txt so that it does not run dfsan-dependent tests on Mac. Thanks, --kcc On

...://git.llvm.org/git/llvm.git/ 1959ce6f3e01241919968ac1911fd45660239d23) Target: arm-none-unknown-eabi Thread model: posix InstalledDir: /usr/local/my_clang/bin "/usr/local/my_clang/bin/ld.lld" barehelloCLANG.o io.o -Bstatic -L/usr/local/my_clang/lib/clang/8.0.0/lib/baremetal -lc -lm -lclang_rt.builtins-arm.a -o helloCLANGstatic ld.lld: error: unable to find library -lc ld.lld: error: unable to find library -lm ld.lld: error: unable to find library -lclang_rt.builtins-arm.a clang-8: error: ld.lld command failed with exit code 1 (use -v to see invocation) on the linking part. I downloade...

...l8.5/tclConfig.sh --with-tk-config=/usr/lib/tk8.5/tkConfig.sh CFLAGS="-fsanitize=address -fsanitize=undefined -fno-sanitize=float-divide-by-zero,vptr " CXXFLAGS="-fsanitize=address -fsanitize=undefined -fno-sanitize=float-divide-by-zero,vptr " LD_FLAGS="-pthread -fopenmp-lclang_rt.asan_cxx-x86_64 -fopenmp=libgomp" CC="clang-3.8 -fsanitize=address -fsanitize=undefined -fno-sanitize=float-divide-by-zero,vptr" CXX="clang++-3.8 -fsanitize=address -fsanitize=undefined -fno-sanitize=float-divide-by-zero,vptr" ## I get in the interactive mode of R for n...

...fd45660239d23) > > Target: arm-none-unknown-eabi > > Thread model: posix > > InstalledDir: /usr/local/my_clang/bin > > "/usr/local/my_clang/bin/ld.lld" barehelloCLANG.o io.o -Bstatic > > -L/usr/local/my_clang/lib/clang/8.0.0/lib/baremetal -lc -lm > > -lclang_rt.builtins-arm.a -o helloCLANGstatic > > ld.lld: error: unable to find library -lc > > ld.lld: error: unable to find library -lm > > ld.lld: error: unable to find library -lclang_rt.builtins-arm.a > > clang-8: error: ld.lld command failed with exit code 1 (use -v to see > &...

...ac1911fd45660239d23) > Target: arm-none-unknown-eabi > Thread model: posix > InstalledDir: /usr/local/my_clang/bin > "/usr/local/my_clang/bin/ld.lld" barehelloCLANG.o io.o -Bstatic > -L/usr/local/my_clang/lib/clang/8.0.0/lib/baremetal -lc -lm > -lclang_rt.builtins-arm.a -o helloCLANGstatic > ld.lld: error: unable to find library -lc > ld.lld: error: unable to find library -lm > ld.lld: error: unable to find library -lclang_rt.builtins-arm.a > clang-8: error: ld.lld command failed with exit code 1 (use -v to see > i...

...>> Target: arm-none-unknown-eabi >>> Thread model: posix >>> InstalledDir: /usr/local/my_clang/bin >>> "/usr/local/my_clang/bin/ld.lld" barehelloCLANG.o io.o -Bstatic >>> -L/usr/local/my_clang/lib/clang/8.0.0/lib/baremetal -lc -lm >>> -lclang_rt.builtins-arm.a -o helloCLANGstatic >>> ld.lld: error: unable to find library -lc >>> ld.lld: error: unable to find library -lm >>> ld.lld: error: unable to find library -lclang_rt.builtins-arm.a >>> clang-8: error: ld.lld command failed with exit code 1 (use -v t...

...c1911fd45660239d23) >> Target: arm-none-unknown-eabi >> Thread model: posix >> InstalledDir: /usr/local/my_clang/bin >> "/usr/local/my_clang/bin/ld.lld" barehelloCLANG.o io.o -Bstatic >> -L/usr/local/my_clang/lib/clang/8.0.0/lib/baremetal -lc -lm >> -lclang_rt.builtins-arm.a -o helloCLANGstatic >> ld.lld: error: unable to find library -lc >> ld.lld: error: unable to find library -lm >> ld.lld: error: unable to find library -lclang_rt.builtins-arm.a >> clang-8: error: ld.lld command failed with exit code 1 (use -v to see >> i...