936
edits
Avoiding multiple downloads of FGData on Linux: Difference between revisions
Jump to navigation
Jump to search
m
Avoiding multiple downloads of FGData on Linux (view source)
Revision as of 02:41, 1 July 2021
, 1 July 2021small corrections and clearer wording.
m (added wip) |
m (small corrections and clearer wording.) |
||
| Line 17: | Line 17: | ||
== The main ideas == | == The main ideas == | ||
* You'll need one directory for each separate FlightGear version you want to build. | * You'll need one directory for each separate FlightGear version you want to build. | ||
* You will need a FlightGear directory that matches the version you built | * You will need a FlightGear fgdata directory that matches the version you built | ||
* You can use a single | * You can use a single cloned fgdata for everything using git worktrees. | ||
* If you are building more than one version of flightgear, install/flightgear is not a particularly good location for the main git archive. | * If you are building more than one version of flightgear, install/flightgear is not a particularly good location for the main fgdata git archive. | ||
* fgdata normally lives as a sub-directory in <code>install/flightgear/ There is no rule that says it has to stay there.</code> | * fgdata normally lives as a sub-directory in <code>install/flightgear/ There is no rule that says it has to stay there.</code> | ||
* Once it exists, <code>install/flightgear/fgdata</code> can moved to a safe location and replaced by a symbolic link to that location. The reason for doing this is that you may at some point want to remove your install directory and completely rebuild it. Having fgdata in a "safe" location prevents it from being deleted. You'll just have to recreate the install/flghtgear path and re-create the symbolic link before proceeding with your rebuild. | * Once it exists, <code>install/flightgear/fgdata</code> can moved to a safe location and replaced by a symbolic link to that location. The reason for doing this is that you may at some point want to remove your install directory and completely rebuild it. Having fgdata in a "safe" location prevents it from being deleted. You'll just have to recreate the install/flghtgear path and re-create the symbolic link before proceeding with your rebuild. | ||
* The git worktree feature can be used to create multiple copies of fgdata with a specific version of fgdata checked out for each worktree. This avoids the necessity of re-downloading fgdata for each variant of flightgear you build. Having fgdata in that "safe" location is a good idea if you are going to use this feature. | * The git worktree feature can be used to create multiple additional copies of fgdata with a specific version of fgdata checked out for each worktree. This avoids the necessity of re-downloading fgdata for each variant of flightgear you build. Having fgdata in that "safe" location is a good idea if you are going to use this git feature. | ||
== Technical points and command examples (need example for git worktree) == | == Technical points and command examples (need example for git worktree) == | ||