Devun about that PM, i can't send you another pm until you clear out your PM box.
-=Double Post Merge =-
Step 3: What is a Makefile?
If you have worked with *nix and source codes you will probably know the basics of a Makefile, if not, FEAR NOT! This Step is going down to the basics for a PSP Makfile. If you have a look at a basic one included with MinPSPw
C:\ pspsdk\psp\sdk\samples\te mplate\elf_template\Makef ile.
This is what it contains:
Code:
TARGET = template
OBJS = main.o
INCDIR =
CFLAGS = -O2 -G0 -Wall
CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
ASFLAGS = $(CFLAGS)
LIBDIR =
LDFLAGS =
EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = Template
PSPSDK=$(shell psp-config --pspsdk-path)
include $(PSPSDK)/lib/build.mak
Your probably thinking to yourself WTF!
Don’t worry though cause im going to go through each line with you.
The first line
This line tells the compiler (psp-gcc)
what name it should give to your
ELFfile
(Elf’s, PBP’s and PRX’s are covered in the next chapter).
If you were to change the targets name to
Code:
TARGET = HELLOthisISaTEST
and compile it you would get
Code:
HELLOthisISaTEST.elf
The next line
is linking the source file
with your Application. There
HAS TO be something on this line or else nothing will happen when you compile it, actually it won’t even compile at all
.
The line
is a custom directory where you can set your include files to, so when you `include` a file it checks this directory first, if it doesn’t find it, it uses the one from the sdk.
The next 3 lines you don’t
REALLY need to know about, although I might go over them in one of my more advanced tutorials.
The only other 2 lines that you need to know about are
Code:
EXTRA_TARGETS = EBOOT.PBP
Which is a
MUST HAVE.
And
Code:
PSP_EBOOT_TITLE = Template
Which is the name that will show up in the XMB (Cross Media Bar).
Tutorial: File formats
ELF File type
---------------------------------------------
Lemme break it down for you. An elf file is basically just a plain executable file.
Help within are the basic file coding, linkable libraries (most of them) and all the various game data used within the homebrew (normally) game.
PRX File type
---------------------------------------------
Ok this file type is a bit more complicated than a plain elf file. This is basically a Playstation Plug-in file. Its relocatable elf that can be stored anywhere memory allows it although with an elf file it can only be stored and executed at
0x88000000*. Most times kernel functions** and libraries are put into a prx file for portability. These file can be dynamically linked with programs and are much like Window’s DLL files.
PBP File type
---------------------------------------------
This type is the hardest to get the grips on. Basically a compiler (psp-gcc) uses the main c file from your program and compiles it into an ELF, which is just the skeleton for a program, you can’t run these on current firmwares (3.XX kernel). Then prx-gen is used to create a prx file, it takes the elf file and adds some `meat` onto it. Then finally pack-pbp creates your PBP (homebrew program). It add’s all the images you see in the XMB (Cross Media Bar (vsh)) the sound you hear when selecting it, PARAM.SFO (which is a very important file). This library contains everything you need to create a homebrew game.
PARAM.SFO
--------------------------------------------------
I wasn’t going to do a section about anything else, but I think this is an important file.
It is basically Keys that have a Value that is read by the FW to produce results
These are the keys:
0: BOOTABLE VALUE=[0,1]
1: CATEGORY VALUE=[unsure] Could any devs that know PM me please.
2: DISC_ID VALUE=[region code for the game]
3: DISC_VERSION VALUE=[region version for the game]
4: PARENTAL_LEVEL VALUE[0-11] Level that is needed to be-able to play the game – default for homebrew games is 0.
5: PSP_SYSTEM_VER VALUE[1XX,2XX,3XX,4XX,5XX] Firmware version needed to play.
6: REGION VALUE=[psp region]
7: TITLE: VALUE=[psp title] Value that shows up in XMB
--------------------------------------------------
*I think this is the right memory address, any developers that know send me a PM
** Kernel functions are functions that user hardware directly. And normally require elevated privileges.
There, if anyone has any questions drop me a PM.
The next tutorial should be on basic programming!
--Slasher
Beginning Programming Tutorials for Windows
GOOD ONE, nice game choice, too! 
