About the compilation problem of Kaleidoscope in llvm tutorial - llvm

I am learning llvm.
I am trying to compile the code in Kaleidoscope Tutorial 3.6.
https://llvm.org/docs/tutorial/LangImpl03.html
clang++ -g -O3 toy.cpp `llvm-config --cxxflags --ldflags --system-libs --libs core` -o toy
I got some errors, but I don't know what to do.
clang++.exe: error: unsupported option '--cxxflags'
clang++.exe: error: unsupported option '--ldflags'
clang++.exe: error: unsupported option '--system-libs'
clang++.exe: error: unsupported option '--libs'
clang++.exe: error: no such file or directory: 'llvm-config'
clang++.exe: error: no such file or directory: 'core -o'
clang++.exe: error: no such file or directory: 'toy'
By the way, I compiled it under Windows.

The main reason you get this error is that your shell does not interpret your command correctly.
See:
clang++.exe: error: no such file or directory: 'llvm-config'
Thus flags that should be passed to llvm-config are passed to clang.exe.
See:
clang++.exe: error: unsupported option '--cxxflags'
clang++.exe: error: unsupported option '--ldflags'
clang++.exe: error: unsupported option '--system-libs'
clang++.exe: error: unsupported option '--libs'
To solve this issue make sure to get llvm-config on you machine and make sure that you use a command line that supports the correct shell semantics. Example of such shells would be git bash or mingw.

Related

"Make" fails with Clang error - how do I get the error from Clang?

Main question is: How do I get the clang error out of make?
I have been trying to follow these instructions to install GLEW. On second look I've seen that GLEW might not really be necessary on Mac OS X, but I'd still like to find out how to get the error from the problem I was having. (I am not very experienced with make and could not make any similar online solutions work).
Theoretically I should download GLEW, unzip, and run 'make' in the file. This is the output of make:
$ make
cc -dynamiclib -install_name /usr/local/lib/libGLEW.2.1.0.dylib -current_version 2.1.0 -compatibility_version 2.1 -o lib/libGLEW2.1.0.dylib tmp/darwin/default/shared/glew.o -framework OpenGL
ld: malformed file
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks//OpenGLframework/OpenGL.tbd:4:18: error: unknown enumerated scalar
platform: zippered
^~~~~~~~
file '/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Framework//OpenGL.framework/OpenGL.tbd'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [lib/libGLEW.2.1.0.dylib] Error 1
Make -n shows that this is just the first command and it pretty much immediately fails. I have tried make V=1, make VERBOSE=1, and make SHELL='sh -x', but they don't give me additional detail about the clang error. I've also tried running the cc command with -v:
$ cc -v -dynamiclib -install_name /usr/local/lib/libGLEW.2.1.0.dylib -current_version 2.1.0 -compatibility_version 2.1 -o lib/libGLEW2.1.0.dylib tmp/darwin/default/shared/glew.o -framework OpenGL
Apple LLVM version 9.1.0 (clang-902.0.39.1)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
"Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld" -demangle -lto_library /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/libLTO.dylib -dynamic -dylib -dylib_compatibility_version 2.1 -dylib_current_version 2.1.0 -arch x86_64 -dyib_install_name /usr/local/lib/libGLEW.2.1.0.dylib -macosx_version_min 10.14.0 -syslibroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk -o lib/libGLEW.2.1.0.dylib tmp/darwin/default/shared/glew.o -framework OpenGL -L/usr/local/lib -lSystem / Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchains/usr/lib/clang/9.1.0/lib/darwin/libclang_rt.osx.a
ld: malformed file
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks//OpenGLframework/OpenGL.tbd:4:18: error: unknown enumerated scalar
platform: zippered
^~~~~~~~
file '/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Framework//OpenGL.framework/OpenGL.tbd'
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [lib/libGLEW.2.1.0.dylib] Error 1
I don't think I am actually managing to get the real error out of clang. So how do I do that?
It is
Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ld -demangle -lto_library /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/libLTO.dylib -dynamic -dylib -dylib_compatibility_version 2.1 -dylib_current_version 2.1.0 -arch x86_64 -dyib_install_name /usr/local/lib/libGLEW.2.1.0.dylib -macosx_version_min 10.14.0 -syslibroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk -o lib/libGLEW.2.1.0.dylib tmp/darwin/default/shared/glew.o -framework OpenGL -L/usr/local/lib -lSystem / Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchains/usr/lib/clang/9.1.0/lib/darwin/libclang_rt.osx.a
command that fails, which is ld, not clang. You can run this command separately to get the same error message.
And
ld: malformed file
/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Frameworks//OpenGLframework/OpenGL.tbd:4:18: error: unknown enumerated scalar
platform: zippered
^~~~~~~~
file '/Library/Developer/CommandLineTools/SDKs/MacOSX10.14.sdk/System/Library/Framework//OpenGL.framework/OpenGL.tbd'
is linker's error message. Unfortunately, I'm not familiar with compilation process on Mac, so can't advice how to fix it.

LLD - unknown argument: -arch

Trying to link a simple program using LLVM 4.0.0 release (Clang, LLD) on Mac OS Sierra.
Note, this is fully achievable in Linux.
My current path is prefixed with the LLVM's bin directory (i.e. /opt/LLVM/4.0.0/bin:$PATH.
The program (main.cpp) is the simplest possible C++ application:
int main()
{
return 0;
}
The shell command issued is: clang -fuse-ld=lld.
This fails with these errors:
/opt/llvm/4/bin/ld.lld: error: unknown argument: -no_deduplicate
/opt/llvm/4/bin/ld.lld: error: unknown argument: -dynamic
/opt/llvm/4/bin/ld.lld: error: unknown argument: -arch
/opt/llvm/4/bin/ld.lld: error: unknown emulation: acosx_version_min
/opt/llvm/4/bin/ld.lld: error: unable to find library -lto_library
/opt/llvm/4/bin/ld.lld: error: /opt/llvm/4/lib/libLTO.dylib: invalid data encoding
clang-4.0: error: linker command failed with exit code 1 (use -v to see invocation)
Using the -v switch, I see this linker command (formatted):
"/opt/llvm/4/bin/ld.lld" \
-demangle \
-lto_library /opt/llvm/4/lib/libLTO.dylib \
-no_deduplicate \
-dynamic \
-arch x86_64 \
-macosx_version_min 10.12.0 \
-o a.out \
main.o \
-lSystem /opt/llvm/4/bin/../lib/clang/4.0.0/lib/darwin/libclang_rt.osx.a
Does anyone know the proper switches for this platform?
After contacting the LLVM-dev mailing list, it appears that LLD for macOS (meaning, Mach-O object format linking) development is stale.
To use Clang on macOS, it's best to stick with the OS-provided ld64.
If the only reason to use LLVM-lld is speed, then try zld
https://github.com/michaeleisel/zld/
It's consistently cuts time to half (often to less than half) as compared to that taken by Apple-ld.
Add the following linker flag:
-fuse-ld=`which zld` -Wl,-zld_original_ld_path,ld

Is it possible to compile c++ using Clang only on windows?

I really tried a lot. Clang does not come with standard C++ includes, and obviously can not find them :
clang++ file.cpp -o file.out
C:\Folder\file.cpp:1:11: fatal error: 'iostream' file not found
#include <iostream>
^
1 error generated.
Passing the mingw includes by arguments, it returns another error:
clang++ -target x86_64-w64-mingw32 C:\Folder\file.cpp -IC:\MinGW\mingw64\lib\gcc\x86_64-w64-mingw32\6.3.0\include\c++ -IC:\MinGW\mingw64\lib\gcc\x86_64-w64-mingw32\6.3.0\include\c++\x86_64-w64-mingw32 -IC:\MinGW\mingw64\x86_64-w64-mingw32\include -o C:\Folder\file.out -std=c++11
clang++.exe: error: unable to execute command: program not executable
clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation)
When I use -c it does not use the linker and also not generate an executable file.
Edit : I'm running on windows
Run your commands from "x64 Native Tools Command Prompt for VS 2017", or something similar. It will setup some required env vars for you.

Vikit_common - Installation failed - Raspberry Pi 2 B

I'm working an a project of drone and I'm having an issue with my Raspberry Pi 2 B. When I'm trying to install vikit_common, I've this on screen :
pi#raspberrypi ~/workspace/rpg_vikit/vikit_common/build $ cmake ..
-- Eigen found (include: /usr/include/eigen3)
-- Configuring done
-- Generating done
-- Build files have been written to: /home/pi/workspace/rpg_vikit/vikit_common/build
pi#raspberrypi ~/workspace/rpg_vikit/vikit_common/build $ make
[ 7%] Building CXX object CMakeFiles/vikit_common.dir/src/atan_camera.cpp.o
cc1plus: error: bad value (native) for -march switch
cc1plus: error: unrecognized command line option ‘-mmmx’
cc1plus: error: unrecognized command line option ‘-msse’
cc1plus: error: unrecognized command line option ‘-msse’
cc1plus: error: unrecognized command line option ‘-msse2’
cc1plus: error: unrecognized command line option ‘-msse3’
cc1plus: error: unrecognized command line option ‘-mssse3’
cc1plus: error: bad value (native) for -march switch
cc1plus: error: unrecognized command line option ‘-mmmx’
cc1plus: error: unrecognized command line option ‘-msse’
cc1plus: error: unrecognized command line option ‘-msse’
cc1plus: error: unrecognized command line option ‘-msse2’
cc1plus: error: unrecognized command line option ‘-msse3’
cc1plus: error: unrecognized command line option ‘-mssse3’
CMakeFiles/vikit_common.dir/build.make:57: recipe for target 'CMakeFiles/vikit_common.dir/src/atan_camera.cpp.o' failed
make[2]: *** [CMakeFiles/vikit_common.dir/src/atan_camera.cpp.o] Error 1
CMakeFiles/Makefile2:168: recipe for target 'CMakeFiles/vikit_common.dir/all' failed
make[1]: *** [CMakeFiles/vikit_common.dir/all] Error 2
Makefile:116: recipe for target 'all' failed
make: *** [all] Error 2
I have Cmake installed (sudo apt-get cmake), Gcc (4.6.3) and OpenCV.
How can I solve the problem ?
Apparently you have an incorrect cmake configuration
A quick gcc 4.6.3 man says
-march=
This specifies the name of the target ARM architecture. GCC uses this name to determine what kind of instructions it can use when
generating assembly code. This option can be used in conjunction with
or instead of the `-mcpu=' option. Permissable names are: ‘armv2’, ‘armv2a’, ‘armv3’, ‘armv3m’, ‘armv4’,‘armv4t’, ‘armv5’, ‘armv5t’, ‘armv5e’, ‘armv5te’, ‘armv6’, ‘armv6j’, ‘armv6t2’,‘armv6z’, ‘armv6zk’, ‘armv6-m’, ‘armv7’, ‘armv7-a’, ‘armv7-r’, ‘armv7-m’,‘iwmmxt’, ‘iwmmxt2’, ‘ep9312’
Firstly looks like you have a wrong value for -march.
So check your cmake configuration

Compile errors with Assembler messages

I'm working with Point Cloud Library. It's mostly in C++ When I compile it, gives such error:
[ 0%] Building CXX object common/CMakeFiles/pcl_common.dir/src/intersections.cpp.o
In file included from /home/lv/pcl-trunk/common/include/pcl/point_types.h:301:0,
from /home/lv/pcl-trunk/common/include/pcl/common/impl/common.hpp:41,
from /home/lv/pcl-trunk/common/include/pcl/common/common.h:186,
from /home/lv/pcl-trunk/common/include/pcl/common/intersections.h:41,
from /home/lv/pcl-trunk/common/src/intersections.cpp:38:
/home/lv/pcl-trunk/common/include/pcl/impl/point_types.hpp:1009:68: warning: ‘SHOT’ is deprecated [-Wdeprecated-declarations]
/tmp/ccRLy4Re.s: Assembler messages:
/tmp/ccRLy4Re.s:2488: Error: no such instruction: `vfmadd312ss (%r9),%xmm2,%xmm1'
/tmp/ccRLy4Re.s:2638: Error: no such instruction: `vfmadd312ss (%rdx),%xmm2,%xmm1'
/tmp/ccRLy4Re.s:3039: Error: no such instruction: `vfmadd312ss (%rax,%r11,4),%xmm5,%xmm1'
/tmp/ccRLy4Re.s:3402: Error: no such instruction: `vfmadd312ss (%rax,%r11,4),%xmm5,%xmm1'
/tmp/ccRLy4Re.s:3534: Error: no such instruction: `vfmadd312ss (%rax,%rdx,4),%xmm1,%xmm2'
/tmp/ccRLy4Re.s:3628: Error: no such instruction: `vfmadd312ss (%rax,%rdx,4),%xmm1,%xmm2'
/tmp/ccRLy4Re.s:6103: Error: no such instruction: `vfmadd312ss (%r11),%xmm0,%xmm4'
/tmp/ccRLy4Re.s:6121: Error: no such instruction: `vfmadd312ss (%r11,%rbx,4),%xmm0,%xmm3'
/tmp/ccRLy4Re.s:6131: Error: no such instruction: `vfmadd312ss (%r11,%rbp,4),%xmm0,%xmm2'
/tmp/ccRLy4Re.s:6135: Error: no such instruction: `vfmadd312ss (%r11,%r13,4),%xmm0,%xmm1'
/tmp/ccRLy4Re.s:6344: Error: no such instruction: `vfmadd312ss (%r10),%xmm0,%xmm1'
/tmp/ccRLy4Re.s:11760: Error: no such instruction: `vfnmadd312ss (%rdx),%xmm0,%xmm0'
/tmp/ccRLy4Re.s:13976: Error: no such instruction: `vfmadd312ss (%rdi),%xmm0,%xmm1'
/tmp/ccRLy4Re.s:14125: Error: no such instruction: `vfmadd312ss (%rdx),%xmm0,%xmm1'
make[2]: *** [common/CMakeFiles/pcl_common.dir/src/intersections.cpp.o] Error 1
make[1]: *** [common/CMakeFiles/pcl_common.dir/all] Error 2
make: *** [all] Error 2
Could anyone tell me how to read these errors and give me some suggestions to solve?
You can use the command below to see what is your CPU (for the compiler):
gcc -march=native -Q --help=target | grep march
Then you can add your cpu type in the ccmake CMAKE_CXX_FLAGS option, for me:
CMAKE_CXX_FLAGS = -march=corei7-avx
You can add -march=native -mno-avx This worked for me.
In my CMakeLists.txt, I added the above to the CMAKE_CXX_FLAGS :
SET(CMAKE_CXX_FLAGS "-ggdb -O3 -fPIC -std=c++0x -march=native -mno-avx")
[Source can be found in this page.]
I faced this issue when trying to install glove.
The problem I faced was resolved by upgrading the g++ version installed in my ubuntu 14.04 machine.
My original g++ version was 4.6.4 and I upgraded it to the g++-5 (5.4.1 when I upgraded it).
There are error message from assembler, which means assembler doesn't know these assembly code, for example vfmadd312ss.
This happens when compiler generate some CPU only assembly code, for example intel E5 with arch core-avx2 have extra instruction set advanced vector extensions, but if "as" is tool old to know the new CPUs, this error would happen.
Try a new version Binutils, the latest is 2.29 now.
If you compile code from another tool, for example bazel, make sure it will call the new "as".
Have you tried using a different compiler?
I had assembler errors in a project using Point Cloud Library. It was possibly due to using Ubuntu 12.04 on an core i7 processor (see https://github.com/uzh-rpg/rpg_svo/issues/7).
I was able to compile by installing the 'clang' compiler
sudo apt-get install clang
and then running cmake with:
cmake -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ .
I have met the same error messages,
I removed the -march=native from CXXFLAGS and CFLAGS in my makefile,
it works in my case. But since you didn't put out your makefile, I am not sure this will works in your case, any way you can have a try.
You probably need to enable advanced vector extensions when compiling (and use toolchain that supports this). Try -march=core-avx2 or something similar.
If you compiled library yourself, it is possible you need to configure it to not use AVX.