> [however you can't build petsc with cygwin/gnu compilers - and then link in with an application using MS compilers]
Could you tell me a little more about what you mean here? (sorry, I am a newbie) Is it that if I make an application say in Visual Studio, and attempt to use that application to call PETSc functions compiled with Cygwin, then I will run into trouble? I contacted this group: http://www2.msic.ch/Software and got the latest build from them that is supposed to work with Visual Studio; which addresses your MS compilers concern? However, I also want to use petsc4py Python bindings with PETSc, so I shouldn't be in trouble there if I use Cygwin, right? Kind regards, Brian On Sat, Nov 21, 2015 at 12:55 PM, Satish Balay <[email protected]> wrote: > Hm - If you can work with cygwin/gnu compilers - then you can build > petsc with them - and use it. > > [however you can't build petsc with cygwin/gnu compilers - and then > link in with an application using MS compilers] > > Satish > > On Sat, 21 Nov 2015, Brian Merchant wrote: > > > Hi all, > > > > I'd like to try and install PETSc on Windows (even though I have been > > forewarned that it is better to simply install it on a unix system). > > > > Some information about my system: > > * Windows 10 Pro, 64 bit > > * latest Cygwin with make, gcc, g++, gfortran installed > > > > The PETSc installation instructions suggest that I run the following > > command: > > > > ./configure --with-cc="win32fe cl" --with-fc="win32fe ifort" > > --with-cxx="win32fe\ cl" --download-fblaslapack\ > > > > However, that results in the following error: > > > > C compiler you provided with -with-cc=win32fe cl does not work. > > Cannot compile C with /cygdrive/a/petsc/bin/win32fe/win32fe cl. > > > > > > The answer to this stackexchange question: > > > http://stackoverflow.com/questions/30229620/petsc-build-error-c-compiler-does-not-work > > > > recommends the following command instead (with escaped whitespace): > > > > ./configure --with-cc="win32fe\ cl" --with-fc="win32fe\ ifort" > > --with-cxx="win32fe\ cl" --download-fblaslapack > > > > Running that command results in the following error (note no second line > in > > error): > > > > C compiler you provided with -with-cc=win32fe\ cl does not work. > > > > In both cases, the configure.log output only contains (I do not use > Chinese > > characters, these were in the file): > > > > > 㰡祳汭湩㹫arch-mswin-c-debug/lib/petsc/conf/configure.log > > > > What should I do? Also, do `gcc`/`g++` compiled programs not work on > > Windows? I ask because if I simply run the suggested command in the > "Quick > > Installation" guide, using `gcc` and `g++`; then I don't get compilation > > errors. Would it be okay to simply use those compilers then? > > > > Kind regards, > > Brian > > >
