Do you have clang in your PATH? Is the binary named clang for something else?
>>>>>>> Defined make macro "CC" to "/home/xian/dev/star/petsc/lib/petsc/bin/win32fe/win32fe cl --use clang" Executing: /home/xian/dev/star/petsc/lib/petsc/bin/win32fe/win32fe cl --use clang -c -o /tmp/petsc-t4q6osvc/config.setCompilers/conftest.o -I/tmp/petsc-t4q6osvc/config.setCompilers -O2 -MD -wd4996 /tmp/petsc-t4q6osvc/config.setCompilers/conftest.c Possible ERROR while running compiler: exit code 15 Source: #include "confdefs.h" #include "conffix.h" int main() { ; return 0; } Error testing C compiler: Cannot compile C with /home/xian/dev/star/petsc/lib/petsc/bin/win32fe/win32fe cl --use clang. <<<<<< You can try this test below manually - with the --verbose option. [I don't have clang - so using 'cl' here] >>>>>> balay@ps5 ~/petsc/src/benchmarks $ ~/petsc/lib/petsc/bin/win32fe/win32fe cl --use cl --verbose sizeof.c Using tool: cl Win32 Development Tool Front End, version 1.11.4 Fri, Sep 10, 2021 6:33:40 PM Attempting to create file: C:\cygwin64\tmp\wfe2972.tmp cl Microsoft (R) C/C++ Optimizing Compiler Version 19.30.30709 for x64 del C:\cygwin64\tmp\wfe2972.tmp Attempting to create file: C:\cygwin64\tmp\wfe2983.tmp cl sizeof.c -link Microsoft (R) C/C++ Optimizing Compiler Version 19.30.30709 for x64 Copyright (C) Microsoft Corporation. All rights reserved. sizeof.c Microsoft (R) Incremental Linker Version 14.30.30709.0 Copyright (C) Microsoft Corporation. All rights reserved. /out:sizeof.exe sizeof.obj del C:\cygwin64\tmp\wfe2983.tmp balay@ps5 ~/petsc/src/benchmarks $ ~/petsc/lib/petsc/bin/win32fe/win32fe cl --use dummy-binary --verbose sizeof.c Using tool: dummy-binary Win32 Development Tool Front End, version 1.11.4 Fri, Sep 10, 2021 6:33:40 PM Attempting to create file: C:\cygwin64\tmp\wfe6AD0.tmp dummy-binary win32feutils::CreateProcess failed. dummy-binary The system cannot find the file specified. del C:\cygwin64\tmp\wfe6AD0.tmp balay@ps5 ~/petsc/src/benchmarks $ <<<<<<< Satish On Wed, 25 Jan 2023, Guo, Sam wrote: > configure.log with -with-cc="win32fe cl --use clang" > ________________________________ > From: Satish Balay <ba...@mcs.anl.gov> > Sent: Tuesday, January 24, 2023 5:15 PM > To: Guo, Sam (DI SW STS SDDEV MECH PHY FEA FW) <sam....@siemens.com> > Cc: Barry Smith <bsm...@petsc.dev>; petsc-users <petsc-users@mcs.anl.gov> > Subject: Re: [petsc-users] compile PETSc on win using clang > > Configure Options: --configModules=PETSc.Configure > --optionsModule=config.compilerOptions --with-cc="win32fe cl" --use win32fe > clang --with-fc=0 > --with-debugging=0 -CFLAGS="-O2 -MD -wd4996" -CXXFLAGS="-O2 -MD -wd4996" > --with-mpi=0 --with-clean=1 --force --with-scalar-type=real > --ignore-cygwin-link -CFLAGS="-O2 -MD -wd4996" -CXXFLAGS="-O2 -MD -wd4996" > > It should be --with-cc="win32fe cl --use clang" > > But then - this mode is untested with configure - so there could be other > issues. > > Also - do you need c++? If not - use --with-cxx=0. This can avoid the error > below. [for clang++ - you might need --with-cxx="win32fe cl --use clang++" - > again untested - so might not work..] > > Satish > > > On Tue, 24 Jan 2023, Guo, Sam wrote: > > > Attached please find configure.log. > > > > error messgae: > > C:\home\xian\dev\star\petsc\src\sys\objects\device\INTERF~1\device.cxx(486): > > error C2065: 'PETSC_DEVICE_CASE': undeclared identifier > > > > ________________________________ > > From: Satish Balay <ba...@mcs.anl.gov> > > Sent: Tuesday, January 24, 2023 2:00 PM > > To: Barry Smith <bsm...@petsc.dev> > > Cc: Guo, Sam (DI SW STS SDDEV MECH PHY FEA FW) <sam....@siemens.com>; > > petsc-users@mcs.anl.gov <petsc-users@mcs.anl.gov> > > Subject: Re: [petsc-users] compile PETSc on win using clang > > > > https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.wikihow.com%2FInstall-Clang-on-Windows&data=05%7C01%7Csam.guo%40siemens.com%7Cf91c34cd02bb4cea9d4808dafe71b408%7C38ae3bcd95794fd4addab42e1495d55a%7C1%7C0%7C638102061582605791%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=DW33e3209lC4piF9wlJeQLR%2BRmAHQakczlgTUKe%2Bcuo%3D&reserved=0 > > > > Is the clang you have from visual studio - as described above? > > > > We don't have experience with using this variant of clang. > > > > If its compatible with 'cl' - and supports the same command interface as > > 'cl' then the following might work [assuming clang.exe is the compiler > > binary installed - and available in PATH]: > > > > '--with-cc=win32fe cl --use clang' > > > > Satish > > > > > > On Tue, 24 Jan 2023, Barry Smith wrote: > > > > > > > > Are you using clang as a replacement for the > > > > > > * "Unix-like" Cygwin GNU compilers compilers or > > > > > > * MinGW GNU compilers that are compatible with the Microsoft > > > compilers? > > > > > > If the former, follow the instructions for using the Cygwin GNU > > > compilers, if the latter follow the directions for the MinGW compilers. > > > > > > Send the configure.log and make.log if things go wrong and we'll help > > > you out. > > > > > > Barry > > > > > > > > > > > > > > > > On Jan 24, 2023, at 4:01 PM, Guo, Sam <sam....@siemens.com> wrote: > > > > > > > > Hi PETSc dev team, > > > > I try to compile PETSc on win using clang. I am wondering if you > > > > could give me some hint. (I’ve already made intel compiler work on win > > > > using win32fe icl). > > > > > > > > Thanks, > > > > Sam Guo > > > > > > > > >