[Bug] [OpenGL] with_opengl crashed with segfault after upgrading

[archibate]

Describe the bug
I've just upgraded my Arch Linux to latest GL packages and reboot, and got the following error:

Log/Screenshots

(ipython-display) [bate@archit taichi]$ p examples/mpm128.py 
[Taichi] mode=development
[Taichi] preparing sandbox at /tmp/taichi-i2b0m14i
[Taichi] <dev mode>, llvm 8.0.1, commit b4c63e28, python 3.8.3
python: /home/bate/Downloads/qq-files/1931127624/file_recv/llvm-8.0.1.src/lib/Support/CommandLine.cpp:278: void {anonymous}::CommandLineParser::registerCategory(llvm::cl::OptionCategory*): Assertion `count_if(RegisteredOptionCategories, [cat](const OptionCategory *Category) { return cat->getName() == Category->getName(); }) == 0 && "Duplicate option categories"' failed.
[E 06/25/20 14:28:27.279] Received signal 6 (Aborted)


***********************************
* Taichi Compiler Stack Traceback *                                                          
***********************************                                                          
/tmp/taichi-i2b0m14i/taichi_core.so: taichi::Logger::error(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)                                  
/tmp/taichi-i2b0m14i/taichi_core.so: taichi::signal_handler(int)                             
/usr/lib/libc.so.6(+0x3c3e0) [0x7fc0019b83e0]                                                
/usr/lib/libc.so.6: gsignal                                                                  
/usr/lib/libc.so.6: abort                                                                    
/usr/lib/libc.so.6(+0x25727) [0x7fc0019a1727]
/usr/lib/libc.so.6(+0x34936) [0x7fc0019b0936]
/tmp/taichi-i2b0m14i/taichi_core.so: llvm::cl::OptionCategory::registerCategory()
/usr/lib/libLLVM-10.so(+0x807f37) [0x7fbfe9846f37]
/lib64/ld-linux-x86-64.so.2(+0x110f2) [0x7fc001f450f2]
/lib64/ld-linux-x86-64.so.2(+0x11201) [0x7fc001f45201]
/usr/lib/libc.so.6: _dl_catch_exception
/lib64/ld-linux-x86-64.so.2(+0x1549c) [0x7fc001f4949c]
/usr/lib/libc.so.6: _dl_catch_exception
/lib64/ld-linux-x86-64.so.2(+0x149be) [0x7fc001f489be]
/usr/lib/libdl.so.2(+0x134c) [0x7fc00195534c]
/usr/lib/libc.so.6: _dl_catch_exception
/usr/lib/libc.so.6: _dl_catch_error
/usr/lib/libdl.so.2(+0x1b89) [0x7fc001955b89]
/usr/lib/libdl.so.2: dlopen
/usr/lib/libGLX_mesa.so.0(+0x56990) [0x7fbfefca5990]
/usr/lib/libGLX_mesa.so.0(+0x4c990) [0x7fbfefc9b990]
/usr/lib/libGLX_mesa.so.0(+0x356e9) [0x7fbfefc846e9]
/usr/lib/libGLX_mesa.so.0(+0x364ee) [0x7fbfefc854ee]
/tmp/taichi-i2b0m14i/taichi_core.so: _glfwInitGLX
/tmp/taichi-i2b0m14i/taichi_core.so: _glfwPlatformCreateWindow
/tmp/taichi-i2b0m14i/taichi_core.so: glfwCreateWindow
/tmp/taichi-i2b0m14i/taichi_core.so: taichi::lang::opengl::initialize_opengl(bool)
/tmp/taichi-i2b0m14i/taichi_core.so: taichi::lang::opengl::is_opengl_api_available()
/tmp/taichi-i2b0m14i/taichi_core.so(+0x842c07) [0x7fbff1e0bc07]
/tmp/taichi-i2b0m14i/taichi_core.so(+0x730850) [0x7fbff1cf9850]
/usr/lib/libpython3.8.so.1.0: PyCFunction_Call
/usr/lib/libpython3.8.so.1.0: _PyObject_MakeTpCall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: PyEval_EvalCode
/usr/lib/libpython3.8.so.1.0(+0x1d8248) [0x7fc001d1b248]
/usr/lib/libpython3.8.so.1.0(+0x1d2483) [0x7fc001d15483]
/usr/lib/libpython3.8.so.1.0: PyRun_FileExFlags
/usr/lib/libpython3.8.so.1.0: PyRun_SimpleFileExFlags
/usr/lib/libpython3.8.so.1.0: Py_RunMain
/usr/lib/libpython3.8.so.1.0: Py_BytesMain
/usr/lib/libc.so.6: __libc_start_main
python(_start+0x2e) [0x55c52997104e]

Internal Error occurred, check this page for possible solutions:
https://taichi.readthedocs.io/en/stable/install.html#troubleshooting

[bate@archit ~]$ ti
[Taichi] mode=release
python: /home/yuanming/repos/llvm-8.0.1/lib/Support/CommandLine.cpp:282: void (anonymous namespace)::CommandLineParser::registerCategory(llvm::cl::OptionCategory *): Assertion `count_if(RegisteredOptionCategories, [cat](const OptionCategory *Category) { return cat->getName() == Category->getName(); }) == 0 && "Duplicate option categories"' failed.
[E 06/25/20 14:30:31.569] Received signal 6 (Aborted)


***********************************
* Taichi Compiler Stack Traceback *
***********************************
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so: taichi::Logger::error(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so: taichi::signal_handler(int)
/usr/lib/libc.so.6(+0x3c3e0) [0x7f574b0233e0]
/usr/lib/libc.so.6: gsignal
/usr/lib/libc.so.6: abort
/usr/lib/libc.so.6(+0x25727) [0x7f574b00c727]
/usr/lib/libc.so.6(+0x34936) [0x7f574b01b936]
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so(+0xe36b09) [0x7f573b6aab09]
/usr/lib/libLLVM-10.so(+0x807f37) [0x7f5732b98f37]
/lib64/ld-linux-x86-64.so.2(+0x110f2) [0x7f574b5b00f2]
/lib64/ld-linux-x86-64.so.2(+0x11201) [0x7f574b5b0201]
/usr/lib/libc.so.6: _dl_catch_exception
/lib64/ld-linux-x86-64.so.2(+0x1549c) [0x7f574b5b449c]
/usr/lib/libc.so.6: _dl_catch_exception
/lib64/ld-linux-x86-64.so.2(+0x149be) [0x7f574b5b39be]
/usr/lib/libdl.so.2(+0x134c) [0x7f574afc034c]
/usr/lib/libc.so.6: _dl_catch_exception
/usr/lib/libc.so.6: _dl_catch_error
/usr/lib/libdl.so.2(+0x1b89) [0x7f574afc0b89]
/usr/lib/libdl.so.2: dlopen
/usr/lib/libGLX_mesa.so.0(+0x56990) [0x7f5738ff7990]
/usr/lib/libGLX_mesa.so.0(+0x4c990) [0x7f5738fed990]
/usr/lib/libGLX_mesa.so.0(+0x356e9) [0x7f5738fd66e9]
/usr/lib/libGLX_mesa.so.0(+0x364ee) [0x7f5738fd74ee]
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so: _glfwInitGLX
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so: _glfwPlatformCreateWindow
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so: glfwCreateWindow
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so: taichi::lang::opengl::initialize_opengl(bool)
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so: taichi::lang::opengl::is_opengl_api_available()
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so(+0x7faf67) [0x7f573b06ef67]
/home/bate/.local/lib/python3.8/site-packages/taichi/core/../lib/taichi_core.so(+0x6e5d70) [0x7f573af59d70]
/usr/lib/libpython3.8.so.1.0: PyCFunction_Call                                               
/usr/lib/libpython3.8.so.1.0: _PyObject_MakeTpCall                                           
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName                                       
/usr/lib/libpython3.8.so.1.0: PyEval_EvalCode                                                
/usr/lib/libpython3.8.so.1.0(+0x1d1e0d) [0x7f574b37fe0d]                                     
/usr/lib/libpython3.8.so.1.0(+0x12f098) [0x7f574b2dd098]                                     
/usr/lib/libpython3.8.so.1.0: PyVectorcall_Call                                              
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0(+0x12e02f) [0x7f574b2dc02f]                                     
/usr/lib/libpython3.8.so.1.0: _PyObject_CallMethodIdObjArgs                                  
/usr/lib/libpython3.8.so.1.0: PyImport_ImportModuleLevelObject                               
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName                                       
/usr/lib/libpython3.8.so.1.0: PyEval_EvalCode                                                
/usr/lib/libpython3.8.so.1.0(+0x1d1e0d) [0x7f574b37fe0d]                                     
/usr/lib/libpython3.8.so.1.0(+0x12f098) [0x7f574b2dd098]                                     
/usr/lib/libpython3.8.so.1.0: PyVectorcall_Call                                              
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall                                         
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault                                       
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0(+0x12e02f) [0x7f574b2dc02f]
/usr/lib/libpython3.8.so.1.0: _PyObject_CallMethodIdObjArgs
/usr/lib/libpython3.8.so.1.0: PyImport_ImportModuleLevelObject
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: PyEval_EvalCode
/usr/lib/libpython3.8.so.1.0(+0x1d1e0d) [0x7f574b37fe0d]
/usr/lib/libpython3.8.so.1.0(+0x12f098) [0x7f574b2dd098]
/usr/lib/libpython3.8.so.1.0: PyVectorcall_Call
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0(+0x12e02f) [0x7f574b2dc02f]
/usr/lib/libpython3.8.so.1.0: _PyObject_CallMethodIdObjArgs
/usr/lib/libpython3.8.so.1.0: PyImport_ImportModuleLevelObject
/usr/lib/libpython3.8.so.1.0(+0x165b18) [0x7f574b313b18]
/usr/lib/libpython3.8.so.1.0: PyCFunction_Call
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0(+0x12e02f) [0x7f574b2dc02f]
/usr/lib/libpython3.8.so.1.0: _PyObject_CallMethodIdObjArgs
/usr/lib/libpython3.8.so.1.0: PyImport_ImportModuleLevelObject
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: PyEval_EvalCode
/usr/lib/libpython3.8.so.1.0(+0x1d8248) [0x7f574b386248]
/usr/lib/libpython3.8.so.1.0(+0x1d2483) [0x7f574b380483]
/usr/lib/libpython3.8.so.1.0: PyRun_FileExFlags
/usr/lib/libpython3.8.so.1.0: PyRun_SimpleFileExFlags
/usr/lib/libpython3.8.so.1.0: Py_RunMain
/usr/lib/libpython3.8.so.1.0: Py_BytesMain
/usr/lib/libc.so.6: __libc_start_main
/usr/bin/python: _start

Internal Error occurred, check this page for possible solutions:
https://taichi.readthedocs.io/en/stable/install.html#troubleshooting

To Reproduce
Run python examples/mpm128.py with latest Arch Linux.

If you have local commits (e.g. compile fixes before you reproduce the bug), please make sure you first make a PR to fix the build errors and then report the bug.
I know this could be solved by TI_ENABLE_OPENGL=0, but how could you ban OpenGL author from use OpenGL..
Not sure if all latest GLX break Taichi like this, so we should systematically inspect this BUG now.

[archibate]

(master) [bate@archit glsl_taichi]$ glxinfo | grep OpenGL
OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) HD Graphics 530 (SKL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 20.1.1
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.6 (Compatibility Profile) Mesa 20.1.1
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 20.1.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:
(master) [bate@archit glsl_taichi]$ sudo pacman -Su
:: 正在进行全面系统更新...
 今日无事可做

May be related to #1106.

[archibate]

Guess what? Deleting /lib/libLLVM-10.so solve my problem:

(ipython-display) [bate@archit taichi]$ aop examples/minimal.py 
[Taichi] mode=development
[Taichi] preparing sandbox at /tmp/taichi-uiv83ua0
[Taichi] <dev mode>, llvm 8.0.1, commit b4c63e28, python 3.8.3
[I 06/25/20 17:24:10.594] [examples/minimal.py:<module>@3] Following TI_ARCH setting up for arch=opengl
python: /home/bate/Downloads/qq-files/1931127624/file_recv/llvm-8.0.1.src/lib/Support/CommandLine.cpp:278: void {anonymous}::CommandLineParser::registerCategory(llvm::cl::OptionCategory*): Assertion `count_if(RegisteredOptionCategories, [cat](const OptionCategory *Category) { return cat->getName() == Category->getName(); }) == 0 && "Duplicate option categories"' failed.
[E 06/25/20 17:24:10.648] Received signal 6 (Aborted)


***********************************
* Taichi Compiler Stack Traceback *                                                                                                                                                          
***********************************                                                                                                                                                          
/tmp/taichi-uiv83ua0/taichi_core.so: taichi::Logger::error(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, bool)                                     
/tmp/taichi-uiv83ua0/taichi_core.so: taichi::signal_handler(int)                                                                                                                             
/usr/lib/libc.so.6(+0x3c3e0) [0x7f00fc9a53e0]                                                                                                                                                
/usr/lib/libc.so.6: gsignal                                                                                                                                                                  
/usr/lib/libc.so.6: abort                                                                                                                                                                    
/usr/lib/libc.so.6(+0x25727) [0x7f00fc98e727]                                                                                                                                                
/usr/lib/libc.so.6(+0x34936) [0x7f00fc99d936]                                                                                                                                                
/tmp/taichi-uiv83ua0/taichi_core.so: llvm::cl::OptionCategory::registerCategory()                                                                                                            
/usr/lib/libLLVM-10.so(+0x807f37) [0x7f00e24c2f37]                                                                                                                                           
/lib64/ld-linux-x86-64.so.2(+0x110f2) [0x7f00fcfc20f2]                                                                                                                                       
/lib64/ld-linux-x86-64.so.2(+0x11201) [0x7f00fcfc2201]                                                                                                                                       
/usr/lib/libc.so.6: _dl_catch_exception                                                                                                                                                      
/lib64/ld-linux-x86-64.so.2(+0x1549c) [0x7f00fcfc649c]                                                                                                                                       
/usr/lib/libc.so.6: _dl_catch_exception                                                                                                                                                      
/lib64/ld-linux-x86-64.so.2(+0x149be) [0x7f00fcfc59be]                                                                                                                                       
/usr/lib/libdl.so.2(+0x134c) [0x7f00fc96434c]                                                                                                                                                
/usr/lib/libc.so.6: _dl_catch_exception                                                                                                                                                      
/usr/lib/libc.so.6: _dl_catch_error                                                                                                                                                          
/usr/lib/libdl.so.2(+0x1b89) [0x7f00fc964b89]                                                                                                                                                
/usr/lib/libdl.so.2: dlopen                                                                                                                                                                  
/usr/lib/libdlfaker.so: dlopen                                                                                                                                                               
/usr/lib/libGLX_mesa.so.0(+0x56990) [0x7f00e8921990]                                                                                                                                         
/usr/lib/libGLX_mesa.so.0(+0x4c990) [0x7f00e8917990]                                                                                                                                         
/usr/lib/libGLX_mesa.so.0(+0x356e9) [0x7f00e89006e9]                                                                                                                                         
/usr/lib/libGLX_mesa.so.0(+0x36034) [0x7f00e8901034]                                                                                                                                         
/usr/lib/libGLX_mesa.so.0(+0x360f2) [0x7f00e89010f2]                                                                                                                                         
/usr/lib/libvglfaker.so(+0x72635) [0x7f00fcf30635]
/usr/lib/libvglfaker.so(+0x73cf2) [0x7f00fcf31cf2]
/usr/lib/libvglfaker.so(+0x32ab8) [0x7f00fcef0ab8]
/usr/lib/libvglfaker.so: glXGetFBConfigAttrib
/tmp/taichi-uiv83ua0/taichi_core.so(+0xa43b52) [0x7f00ecc0ab52]
/tmp/taichi-uiv83ua0/taichi_core.so: _glfwChooseVisualGLX
/tmp/taichi-uiv83ua0/taichi_core.so: _glfwPlatformCreateWindow
/tmp/taichi-uiv83ua0/taichi_core.so: glfwCreateWindow
/tmp/taichi-uiv83ua0/taichi_core.so: taichi::lang::opengl::initialize_opengl(bool)
/tmp/taichi-uiv83ua0/taichi_core.so: taichi::lang::opengl::is_opengl_api_available()
/tmp/taichi-uiv83ua0/taichi_core.so(+0x8416d7) [0x7f00eca086d7]
/tmp/taichi-uiv83ua0/taichi_core.so(+0x72f320) [0x7f00ec8f6320]
/usr/lib/libpython3.8.so.1.0: PyCFunction_Call
/usr/lib/libpython3.8.so.1.0: _PyObject_MakeTpCall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: _PyFunction_Vectorcall
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalFrameDefault
/usr/lib/libpython3.8.so.1.0: _PyEval_EvalCodeWithName
/usr/lib/libpython3.8.so.1.0: PyEval_EvalCode
/usr/lib/libpython3.8.so.1.0(+0x1d8248) [0x7f00fcd08248]
/usr/lib/libpython3.8.so.1.0(+0x1d2483) [0x7f00fcd02483]
/usr/lib/libpython3.8.so.1.0: PyRun_FileExFlags
/usr/lib/libpython3.8.so.1.0: PyRun_SimpleFileExFlags
/usr/lib/libpython3.8.so.1.0: Py_RunMain
/usr/lib/libpython3.8.so.1.0: Py_BytesMain
/usr/lib/libc.so.6: __libc_start_main
python(_start+0x2e) [0x55e0e5e4604e]

Internal Error occurred, check this page for possible solutions:
https://taichi.readthedocs.io/en/stable/install.html#troubleshooting
(ipython-display) [bate@archit taichi]$ sudo mv /lib/libLLVM-10.so ./old
(ipython-display) [bate@archit taichi]$ ap examples/minimal.py 
[Taichi] mode=development
[Taichi] preparing sandbox at /tmp/taichi-a4cg351d
[Taichi] <dev mode>, llvm 8.0.1, commit b4c63e28, python 3.8.3
[I 06/25/20 17:59:16.230] [examples/minimal.py:<module>@3] Following TI_ARCH setting up for arch=opengl
libGL error: MESA-LOADER: failed to open iris (search paths /usr/lib/dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open iris (search paths /usr/lib/dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open swrast (search paths /usr/lib/dri)
libGL error: failed to load driver: swrast
[W 06/25/20 17:59:16.261] [/home/bate/Develop/taichi/python/taichi/lang/__init__.py:init@171] Arch=Arch.opengl is not supported, falling back to CPU
[Taichi] Starting on arch=x64
42
(ipython-display) [bate@archit taichi]$ 

Why does GLFW load LLVM???

[archibate]

One thing common among #958 #1100 #1106 #1113:
They're all trying to load shared object /lib/libLLVM-9.so, which conflicts with our statically linked LLVM-8.

Also note that they all calling into a function called llvm::cl::OptionCategory::registerCategory().
@yuanming-hu Can we disable this by some LLVM cmake configs?

[archibate]

Trying to run glxgears:

(ipython-display) [bate@archit taichi]$ glxgears
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
(ipython-display) [bate@archit taichi]$ sudo mv /lib/libLLVM-10.so old
(ipython-display) [bate@archit taichi]$ glxgears
libGL error: MESA-LOADER: failed to open iris (search paths /usr/lib/dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open iris (search paths /usr/lib/dri)
libGL error: failed to load driver: iris
libGL error: MESA-LOADER: failed to open swrast (search paths /usr/lib/dri)
libGL error: failed to load driver: swrast
X Error of failed request:  GLXBadContext
  Major opcode of failed request:  152 (GLX)
  Minor opcode of failed request:  6 (X_GLXIsDirect)
  Serial number of failed request:  46
  Current serial number in output stream:  45

Seems GLX is depend on LLVM-10?