[petsc-users] Petsc configuration and multiple branch working

[Barry Smith]

   For your configuration I would recommend multiple local clones. Once you have the first petsc clone just do

   git clone petsc petsc-clone-1
   git clone petsc petsc-clone-2 

   Now you have three PETSc directories and can have different branches in each. Note that git is “smart” and does not copy the entire repository for each clone; it maintains one repository but three working directories. 

   The problem with using different PETSC_ARCH for each branch is that when you switch the branches it will sometimes/often change an include file that many of the C files are dependent on so make gmake will require recompiling much of the library, with different working directories this will not happen.

    Barry

On Sep 6, 2014, at 4:21 PM, Alp Kalpalp <alpkalpalp at gmail.com> wrote:

> Hi,
> 
> Nowadays I am trying to build a branch and sometimes I am swittching back to master branch.
> I experienced that configuring and making a branch requires almost 30 minutes on cygwin.
> I wonder;
> 
> 1- How do you manage more than one branches?
> 2- Do we need to reconfigure after a git pull?
> 3- Are switching back and forward in between branches like me? or just using seperate work-dir for each branch?
> 
> please help me I am so exhausted to configure and make petsc!!!!