[fpc-pascal] How to handle fpc.cfg on Ubuntu with 3.0.4 and 3.2.0 co-existing?

[Bo Berglund]

I have an Ubuntu 18.04 laptop on which I have installed fpc 3.0.4/Lazarus 2.0.8
from sources via svn almost a year back into *my home dir*. No system-wide
install.

Now I am in the process of also installing fpc 3.2.0 from sources.
I have a script for installing on a clean machine that I am reading from and
using the appropriate calls when most has been already installed.
So for fpc my steps are:

cd ~/dev/fpc/3.2.0 (this is the source dir filled via svn)
make clean
make all FPC="$HOME/bin/ppcx64" (fpc 3.0.4 is symlinked here)
make install PREFIX=$HOME FPC="$HOME/bin/ppcx64"
make sourceinstall PREFIX=$HOME

This all works fine.

Now my notes say that I need to create the fpc.cfg file using:

$HOME/lib/fpc/3.2.0/samplecfg "$HOME/lib/fpc/3.2.0" "$HOME"

This creates the file $HOME/fpc.cfg, which is then renamed:
mv "$HOME/fpc.cfg" "$HOME/.fpc.cfg"

But my existing installation already contains the $HOME/.fpc.cfg, which is used
by Lazarus 2.0.8/fpc 3.0.4...

So what is the deal here if I want to have both Lazarus 2.0.10/fpc 3.2.0 and the
old Lazarus 2.0.8/fpc 3.0.4 operational?

Can they share the same fpc.cfg file (or rather .fpc.cfg)?

I renamed the existing .fpc.cfg before doing the last step so I have both the
new fpc.cfg and the old .fpc.cfg_3.0.4 and the diff between them looks like
this:

$ diff fpc.cfg .fpc.cfg_3.0.4
2c2
< # Config file generated by fpcmkcfg on 5-2-21 - 23:49:17
---
> # Config file generated by fpcmkcfg on 15-4-20 - 01:01:27
35,37d34
< #ELSE
<   # Strip debuginfo from the executable if not in debug mode
<   -Xs
43a41,42
> # path to Xcode 4.3+ utilities (no problem if it doesn't exist)
> -FD/Applications/Xcode.app/Contents/Developer/usr/bin
149,150c148,152
< # Search for $fpctarget/$fpcsubarch-$fpcmemorymodel/ subdirectory first
< # for i8086 CPU
---
> # searchpath for units and other system dependent things
> -Fu/home/bosse/lib/fpc/$fpcversion/units/$fpctarget
> -Fu/home/bosse/lib/fpc/$fpcversion/units/$fpctarget/*
> -Fu/home/bosse/lib/fpc/$fpcversion/units/$fpctarget/rtl
>
157,161d158
< # searchpath for units and other system dependent things
< -Fu/home/bosse/lib/fpc/$fpcversion/units/$fpctarget
< -Fu/home/bosse/lib/fpc/$fpcversion/units/$fpctarget/*
< -Fu/home/bosse/lib/fpc/$fpcversion/units/$fpctarget/rtl
<
175,177d171
< # searchpath for tools
< -FD/home/bosse/lib/fpc/$fpcversion/bin/$FPCTARGET
<
190a185,187
> # searchpath for tools
> -FD/home/bosse/lib/fpc/$fpcversion/bin/$FPCTARGET
>
250a248,250
>
> # Always strip debuginfo from the executable
> -Xs

Unfortunately I cannot decode this because I am not used to this diff format...
Can I keep my existing .fpc.cfg file or should I rename the fpc.cfg to .fpc.cfg?

I have not yet built Lazarus...


-- 
Bo Berglund
Developer in Sweden