Copy Path(s)
During the compiling process there will be times when the path of a file or folder is needed for a Terminal command. One easy GUI short cut is to right click on the file or folder to pull up an option list. Find the option 'Copy Path(s)' and click on it. The path of the file or folder will be copied. Next, in the Terminal, click on 'Edit' at the top of the Terminal window and then click on 'Paste' in order to past the link into the Terminal. See the screen shot to the left.
Location of Files
The SD card performs well for common computer tasks and running FlightGear. However, compiling large programs could wear out the SD card before it's time. This is an excellent application for a SSD drive. Especially if many compiled versions of FlightGear are planned. For that reason this Wiki will choose to compile and install FlightGear on a SSD drive.
This is a good time to create some needed folders on the SSD. For this Wiki the folder FlightGear was created in the root of the SSD. Within this newly created folder FlightGear, create two more folders named fg-install and source. Use your favorite method to navigate and create folders, whether it be the Terminal or GUI. Furthuremore, these files can have other names as long as those other names are globally used.
Build Order
wkitty42 wrote:
"The download_and_compile.sh builds in this order:
PLIB, OSG, SimGear, FlightGear
It updates fgdata between the building of SimGear and FlightGear so that the translations tool can be handled properly..."
Patching; OSG patch example
There could come a time when the source needs to be patched before compiling. In this case the patch
command can be used along with it's argument -p
. For example; the OpenSceneGraph-3.4.0 requires the '0007-Explicit-signed-char-type-for-portability-base64.patch' patch, in order for it to compile for the ARM architecture.
In this example, the patch can be found at this link: OpenSceneGraph-3-4-0 patch. The download
link for '0007-Explicit-signed-char-type-for-portability-base64.patch' is what we are looking for. This file can be downloaded with the wget
command as seen below:
wget --trust-server-names https://sources.debian.org/src/openscenegraph-3.4/3.4.1+dfsg1-5/src/osgPlugins/osgjs/Base64.cpp/
Place, the above patch file, into the the source root folder of OpenSceneGraph-3-4-0.
The argument ,-p
adjusts the path of the patch. Below is an example of a snippet from a patch. Reference the line ,--- openscenegraph-3.4.orig/src/osgDB/ConvertBase64.cpp
. The folder openscenegraph-3.4.orig/
can not be used, in our example. In this case, one of the path folders need to be ignored, hence -p1
. If two path folders needed to be ignored; -p2
.
Index: openscenegraph-3.4/src/osgDB/ConvertBase64.cpp
===================================================================
--- openscenegraph-3.4.orig/src/osgDB/ConvertBase64.cpp
+++ openscenegraph-3.4/src/osgDB/ConvertBase64.cpp
@@ -28,7 +28,7 @@ namespace osgDB
int base64_decode_value(char value_in)
{
- static const char decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
+ static const signed char decoding[] = {62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-2,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51};
static const char decoding_size = sizeof(decoding);
value_in -= 43;
if (value_in < 0 || value_in > decoding_size) return -1;
Navigate the terminal into the root folder of OpenSceneGraph-3.4.0 source. Side note: the patch
command might need to be installed. Now enter the below command into the terminal:
patch -p1 <0007-Explicit-signed-char-type-for-portability-base64.patch
PLIB
Compilation algorithm for PLIB. | Directory tree structure |
---|---|
|
Storage Device | | |----FlightGear | | | | | |----fg-install | | | | | | | |----source | | | [1] [2] | | | | | | | | |----build-plib | | | [8] [9] [10] [11] | | | | | | | | |----libplib.git | | | [3] [4] [5] [6] | | | [7] | | | | | | |
OSG
Compilation algorithm for OSG. | Directory tree structure |
---|---|
|
Storage Device | | |----FlightGear | | | | | |----fg-install | | | | | | | |----source | | | [1] [2] | | | | | | | | |----OpenSceneGraph | | | [3] | | | | | | | | |---- | | | | | | | | | | | | |
OpenRTI
James wrote: " OpenRTI is optional. If you're using it, you need to compile it before SimGear (and therefore, before FlightGear). It's orthogonal to OSG.
SimGear
Compilation algorithm for SimGear. | Directory tree structure |
---|---|
|
Storage Device | | |----FlightGear | | | | | |----fg-install | | | | | | | |----source | | | | | | | | | | | |----build-plib | | | | | | | | | | | |----libplib.git | | | | | | | | | | | | |
FlightGear
Compilation algorithm for FlightGear. | Directory tree structure |
---|---|
|
Storage Device | | |----FlightGear | | | | | |----fg-install | | | | | | | |----source | | | | | | | | | | | |----build-plib | | | | | | | | | | | |----libplib.git | | | | | | | | | | | | |
FlightGear Data
Install algorithm for FlightGear Data. | Directory tree structure |
---|---|
|
Storage Device | | |----FlightGear | | | | | |----fg-install | | | | | | | |----source | | | | | | | | | | | |----build-plib | | | | | | | | | | | |----libplib.git | | | | | | | | | | | | |