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undefined reference to `_init()'

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Panajev2001a

Joined: 20 Aug 2005
Posts: 100

Posted: Tue Mar 21, 2006 8:16 am Post subject: undefined reference to `_init()'

Hi guys, I am still stuck in updating my application from FW 1.50 compatible to FW 2.00 + eLoader compatible and one of the things I am trying is the trick MrBrown suggested in a thread here regarding libSDL (I am not using SDL, but the problem might be similar so I am trying to add this fix too):

Code:

int SetupCallbacks();

/* Snippet of code, till main () added on March 20, 2006

If this flag is set to 1, the _init() function was called and all
global/static constructors have been called. */
static int init_was_called = 0;

__attribute__ ((constructor))
void loaderInit()
{
int kmode_is_available = (sceKernelDevkitVersion() < 0x02000010);

if (kmode_is_available) {
/* Do nefarious kernel stuff here */
}

init_was_called = 1;
}

extern void _init(void);

int main(int argc, char *argv[])
{
/* Fanjita's EBOOT loader can be configured to skip the call to _init().
Since we need _init() for C++, we check to see if _init() has been
called. If it hasn't we call it manually, after determining whether or
not we can access the kernel. */

if (!init_was_called) {
_init();
}

SetupCallbacks();

Naturally this resulted in:

Code:

Panajev@Panajev /usr/local/pspdev/psp/sdk/samples/IGGS_PSP
$ make
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/main.o src/main.cpp
ccache psp-gcc -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -c -o
src/disablefpu.o src/disablefpu.S
bin2o -i ../gu/cube/logo.raw logo.o logo
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/point.o src/point.cpp
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/pmatrix.o src/pmatrix.cpp
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/PSP_Utils.o src/PSP_Utils.cpp
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/camera3d.o src/camera3d.cpp
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/Matrix_stack.o src/Matrix_stack.cpp
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/3dsloader.o src/3dsloader.cpp
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/ctextureP2.o src/ctextureP2.cpp
ccache psp-g++ -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -msingle-floa
t -funroll-loops -ffast-math -fsingle-precision-constant -fno-exceptions -fno-ex
ceptions -fno-rtti -c -o src/clipper3d.o src/clipper3d.cpp
ccache psp-gcc -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -c -o src/valloc.o src/valloc.c
ccache psp-gcc -I. -IC:/cygwin/usr/local/pspdev/psp/sdk/include -G0 -Wall -Os -m
single-float -funroll-loops -ffast-math -fsingle-precision-constant -fno-excepti
ons -L. -LC:/cygwin/usr/local/pspdev/psp/sdk/lib src/main.o src/disablefpu.o
logo.o src/point.o src/pmatrix.o src/PSP_Utils.o src/camera3d.o src/Matrix_stack
.o src/3dsloader.o src/ctextureP2.o src/clipper3d.o src/valloc.o -lpng -lz -lint
mdloader -lgeommath -lpspgu -lstdc++ -lm -lc -lpspdebug -lpspdisplay -lpspge -l
pspctrl -lpspsdk -lc -lpspnet -lpspnet_inet -lpspnet_apctl -lpspnet_resolver -lp
sputility -lpspuser -lpspkernel -o krondor.elf
src/main.o: In function `main':
main.cpp:(.text+0x124): undefined reference to `_init()'
collect2: ld returned 1 exit status
make: *** [krondor.elf] Error 1

I am using and have always used PSPSDK with the toolchain scripts kindly developed by oopo's so I am not trying any custom+fancy toolchain set-up, just to let you know.

Is there anything I am missing ? Do you need more data that I can provide to help me with this issue ?

Thanks anyways, I hope not to keep my application stuck in FW 1.50 land forever ;).

danzel

Joined: 04 Nov 2005
Posts: 182

Posted: Tue Mar 21, 2006 9:55 pm Post subject:

Try replace the definition of _init() with this:

Code:

#ifdef __cplusplus
extern "C" {
#endif
extern void _init(void);
#ifdef __cplusplus
}
#endif

It's required if you are using c++

Panajev2001a

Joined: 20 Aug 2005
Posts: 100

Posted: Wed Mar 22, 2006 3:51 am Post subject:

danzel wrote:

Try replace the definition of _init() with this:

Code:

#ifdef __cplusplus
extern "C" {
#endif
extern void _init(void);
#ifdef __cplusplus
}
#endif

It's required if you are using c++

Edit: It did work, the program now links again correctly.

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