FPC4GP2X status?

[dmantione]

Apparently you have to link in some libraries. Seems at least libstdc++ and some kind of library related to Ogg Vorbis.

[savage]

Can you link directly to the *.a file without the need for the .cpp?

[dmantione]

Yes, you can.

If the amount of dependencies is high I would consider to dlopen the library rather than linking to it; since a high number of direct dependencies makes you vulnerable to incompatibilities versions between those libraries.

[paul_nicholls]

[quote="dmantione"]Apparently you have to ]

If it helps, I have a makefile for a C code demo that compiles using the devkitGP2X which uses most of the SDL libs including SDL_mixer...

CROSS_COMPILE = C:/devkitGP2X/bin/arm-linux-
SDL_BASE = C:/devkitGP2X/bin/arm-linux-
LDFLAGS = -static

CXX = $(CROSS_COMPILE)g++
STRIP = $(CROSS_COMPILE)strip

CXXFLAGS = -I"C:/devkitGP2X/include" -I"C:/devkitGP2X/include/SDL" -DTARGET_GP2X -O2 -Wall
LIBS = -L"C:/devkitGP2X/lib" -lSDL -lSDL_gfx --start-group -lSDL_ttf -lfreetype -lSDL --end-group -lSDL_image -ljpeg -lpng12 -lz --start-group -lSDL_mixer -lvorbisidec -lmikmod -lsmpeg -lSDL --end-group -lgcc -lm -lc -lexpat -lpthread -ldl

TARGET = sdltest.gpe
OBJS = sdltest.o

ALL_TARGETS = $(TARGET)

all: $(ALL_TARGETS)

$(TARGET): $(OBJS)
		$(CXX) $(LDFLAGS) -o $(TARGET) $(OBJS) $(LIBS)
		$(STRIP) $(TARGET)

clean:
		rm *.o
		rm $(TARGET)

So I assume I already have all the libs I need...I must not be linking correctly or something

cheers,
Paul

[dmantione]

Yes, you might have them, but did you $linklib them?

[paul_nicholls]

[quote="dmantione"]Yes, you might have them, but did you $]

I assume I would use $linklib in the .pas file?

I already do this for my own c library:

{$link gp2x_sdl_mixer_c.o}
{$linklib c}

How would I use $linklib for other libraries to this as well?

cheers,
Paul

[savage]

Maybe something like

{$linklib smpeg}

inside the smpeg.pas unit, and similar directives in the other units.

[paul_nicholls]

Maybe something like

[code]{$]

inside the smpeg.pas unit, and similar directives in the other units.

I have tried adding that and similar into the gp2x_sdl_mixer.pas but to no avail

I am trying to get around using the smpeg.pas and sdl_mixer.pas units as a test and use the c library (gp2x_sdl_mixer_c.o) instead via the gp2x_sdl_mixer.pas file.

cheers,
Pau;

[Legolas]

For nds I use static linking in this way:

[pascal]{$linklib libsmpeg.a}[/pascal]

Of course I added the path of these libs on my fpc.cfg

-FlE:\devkitpro\libnds\lib
-FlE:\devkitpro\devkitARM\lib\gcc\arm-eabi\4.1.2
-FlE:\devkitpro\devkitARM\lib\gcc\arm-eabi\4.1.2\thumb
-FlE:\devkitpro\devkitARM\arm-eabi\lib
-FlE:\devkitpro\devkitARM\arm-eabi\lib\thumb

Some times I need to link some other libs, like

[pascal]{$linklib libc.a}
{$linklib libgcc.a}
{$linklib libsysbase.a}[/pascal]

and never had problems.
I hope it could do the trick on gp2x too

[paul_nicholls]

Thanks for the info Legolas, I will try this :-)
cheers,
Paul