similar to: libc++ cross-compile linux-armv7 and math function problems

At first glance, it looks like long double functions (such as fabsl and friends) are missing from your sysroot's <math.h>. Does your target support long double at all? -Dimitry > On 6 Feb 2018, at 09:51, Tobias Hieta via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Hello, > > I am trying to cross-compile libc++ from my x86_64 linux system to armv7hf. We have

Hello Dimitry and thanks for your answer. I am pretty sure it does indeed support long double. It's configured with vfpv3-d16 - but I noticed that c++config.h in gcc has _GLIBCXX__HAS_FABSL and friends are undefined. I think I need to look deeper at the configuration of our toolchain. long double support is required in libc++ then I gather? -- Tobias On Tue, Feb 6, 2018 at 11:47 AM,

Hello, I am trying to cross-compile libc++ from my x86_64 linux system to armv7hf. We have our own gcc compiler that we build with crosstools-ng (based on gcc 6.3.0) and I set my environment like this: CC=armv7a-plex-linux-gnueabihf-gcc CXX=armv7a-plex-linux-gnueabihf-g++ CFLAGS=-fPIC -DPIC -mfloat-abi=hard -march=armv7-a -Os -mfpu=vfpv3-d16 --sysroot=<path> CXXFLAGS=-fPIC -DPIC

cmake -E cmake_progress_report llvm-3.8.0.src_bld_x86_64-rhel6.4-linux-gnu/CMakeFiles In file included from llvm-3.8.0.src/projects/libcxx/include/__hash_table:19:0, from llvm-3.8.0.src/projects/libcxx/src/hash.cpp:10: llvm-3.8.0.src/projects/libcxx/include/cmath:310:9: error: '::signbit' has not been declared using ::signbit; ^

Greetings! I have been building llvm-3.6.x, 3.7.1 and 3.7.2 with (glibc-2.12.1, binutils-2.24, gcc-4.9.2) almost same set if CMake flags. However while building LLVM-3.8.0 using same CMake flags I am observing projects/libcxx/include/cmath errors... ...'::signbit' has not been declared ...'::fpclassify' has not been declared ...'::isfinite' has not been declared ...

Hi cschen, It seems that libunwind (the one included in libcxxabi) is mandatory at the moment. Use the second build command instead: $ CROSS_COMPILING=arm ENABLE_LIBUNWIND=1 ./scripts/compile-all.sh Logan On Tue, Oct 7, 2014 at 5:32 PM, gamma_chen <gamma_chen at yahoo.com.tw> wrote: > After do "sudo apt-get update", the following are pass. > > Install the

*System:* Debian Linux Sid/Unstable amd64 *LLVM/Clang:* Trunk *Scenario:* In the past couple of days I've been compiling against trunk I get two separate and spurious hang ups with CMake. *Note:* I build against more than just X86 follow along the progress of other platforms, though just building for X86 produces the same results below. *Assumption:* Configure cmake with prior built

Hi Brian Here's the config.log (I'm not posting it on the dev-list). The automatic gcc macro for Interix is __INTERIX if this is to any help. /Henrik >From: "Brian R. Gaeke" <gaeke at uiuc.edu> >Reply-To: LLVM Developers Mailing List <llvmdev at cs.uiuc.edu> >To: LLVM Developers Mailing List <llvmdev at cs.uiuc.edu> >Subject: Re: [LLVMdev]

Hi >From: Chris Lattner <sabre at nondot.org> >Date: Thu, 15 Jul 2004 17:43:27 -0500 (CDT) >Ah, suddenly everything makes sense. If you're interested in LLVM on the >windows platform, *please* get CVS. Last night I've got the latest version of LLVM from CVS and now porting LLVM to Interix from this version on. I got this error: --------------------- gmake[1]:

I'm trying to build LLVM, Clang, LLD, compiler-rt, libc++, libc++abi and libunwind with musl-based toolchain. The configuration is the following: LIBCXX_HAS_MUSL_LIBC=ON LIBCXX_HAS_GCC_S_LIB=OFF CLANG_DEFAULT_CXX_STDLIB=libc++ CLANG_DEFAULT_LINKER=lld CLANG_DEFAULT_RTLIB=compiler-rt LLVM_DEFAULT_TARGET_TRIPLE=x86_64-pc-linux-musl LLVM_TARGET_ARCH=x86_64

Hi, I am trying to build llvm 3.4.2 on Centos 6.6. I am getting this below build error , while building the libcxx. I followed the build procedure based of http://clang.llvm.org/get_started.html. I cannot move to a higher version, Since we need to develop on CentOS 6.6 and LLVM 3.4.2 ,is the last version that supports gcc 3.4.2. Starting from LLVM 3.5.0, there has been a huge jump to gcc 4.7.0.

Hi Galina, It seems that our libcxx bots are now triggering builds for any changes to llvm: http://lab.llvm.org:8011/builders/libcxx-libcxxabi-libunwind-aarch64-linux/builds/2434 Should I file a bug report for this? Thanks, Diana On Sat, 19 Oct 2019 at 11:36, Galina Kistanova via cfe-commits <cfe-commits at lists.llvm.org> wrote: > > Hello everyone, > > The staging master is

Hello everyone, Below are some buildbot numbers for the last week of 6/05/2016 - 6/11/2016. Thanks Galina buildername | was_red -----------------------------------------------------------+----------- sanitizer-x86_64-linux-bootstrap | 134:12:25 perf-x86_64-penryn-O3-polly-parallel-fast | 46:29:26

Hello build bot owners! The staging master is ready. Please feel free to use it to make sure your bots would work well with the monorepo and github. The following builders could be configured to build monorepo: * clang-atom-d525-fedora-rel * clang-native-arm-lnt-perf * clang-cmake-armv7-lnt * clang-cmake-armv7-selfhost-neon * clang-cmake-armv7-quick * clang-cmake-armv7-global-isel *

Hello everyone, Below are some buildbot numbers for the last week of 9/25/2016 - 10/1/2016. Please see the same data in attached csv files: The longest time each builder was red during the last week; "Status change ratio" by active builder (percent of builds that changed the builder status from greed to red or from red to green); Count of commits by project; Number of completed

I think what she is referring to was that the build seemed to be triggered by a commit to a project that shouldn't trigger builds on a libcxx bot (i.e. the change was in llvm). I have a somewhat orthogonal but related question. In the past, commits to compiler-rt did not trigger builds on llvm/clang/sanitizer bots. Has this behaviour been rectified with the move to github? I am really sorry

Hello everyone, Below are some buildbot numbers for the week of 7/10/2016 - 7/16/2016. Please see the same data in attached csv files: The longest time each builder was red during the week; "Status change ratio" by active builder (percent of builds that changed the builder status from greed to red or from red to green); Count of commits by project; Number of completed builds, failed

I just landed these patches: commit c55051eea5d3cd57abfd9727f519b670517704d9 Author: Louis Dionne <ldionne at apple.com> Date: Thu Jun 25 12:02:43 2020 -0400 [libunwind] Allow specifying custom Lit config files This is the libunwind counterpart of 0c66af970c80. commit 33c9c10d183371edc95fa936705bef56f55ab611 Author: Louis Dionne <ldionne at

On 10/3/14 10:16 AM, Dan Albert wrote: >> >> I try to build libc++ and libc++abi for host x86_64(linux) and target >> arm(linux) but fail. >> > > Failing in what way? If this isn't working out of the box, we've done > something wrong. Yeah, it would help to know more specifics about where you're getting stuck. > > jroelofs might know more... For

When I tried to build with -DLLVM_ENABLE_LIBCXX, I found out that it doesn't try to use the in-tree libcxx but looks for one built and installed in the system. Since building all of llvm required CXX and using libcxx with the same version as the rest of llvm makes sense, I would certainly appreciate an option to build the in-tree libcxx as a first step and use it in when building llvm, lld,