Cross-compiling SDL for uclinux

SDL Development
1

Dear all,

after cross-compiling sdl-1.2.5,then cross-compile the demos of test
directory,
but only the file testtypes can be compiled successfully.
when cross-compiling SDL-1.2.5, I use option --enable-static
–disable-shared.

there are some errors as follows:
testhread.tmp:In fucntion ‘ThreadFunc’:
testhread.tmp(.text+0x78):undefined reference to 'SDL_ThreadID’
testhread.tmp(.text+0x108):undefined reference to 'SDL_Delay’
testhread.tmp:In fucntion ‘killed’:
testhread.tmp(.text+0x1ac):undefined reference to 'SDL_Delay’
testhread.tmp:In fucntion ‘main’:
testhread.tmp(.text+0x220):undefined reference to 'SDL_Init’
testhread.tmp(.text+0x23c):undefined reference to 'SDL_GetError’
testhread.tmp(.text+0x2a0):undefined reference to 'SDL_Quit’
testhread.tmp(.text+0x2dc):undefined reference to 'SDL_CreateThread’
testhread.tmp(.text+0x304):undefined reference to 'SDL_GetError’
testhread.tmp(.text+0x368):undefined reference to 'SDL_Delay’
testhread.tmp(.text+0x3bc):undefined reference to 'SDL_WaitThread’
testhread.tmp(.text+0x3f4):undefined reference to 'SDL_CreateThread’
testhread.tmp(.text+0x41c):undefined reference to 'SDL_GetError’
testhread.tmp(.text+0x480):undefined reference to 'SDL_Delay’
testhread.tmp(.text+0x4bc):undefined reference to 'SDL_KillThread’
testhread.tmp(.text+0x51c):undefined reference to 'SDL_CreateThread’
testhread.tmp(.text+0x544):undefined reference to ‘SDL_GetError’

how to solve it then?

Regards,
Andy

2

Dear all,

after cross-compiling sdl-1.2.5,then cross-compile the demos of test
directory,
but only the file testtypes can be compiled successfully.
when cross-compiling SDL-1.2.5, I use option --enable-static
–disable-shared.

there are some errors as follows:
testhread.tmp:In fucntion ‘ThreadFunc’:
testhread.tmp(.text+0x78):undefined reference to 'SDL_ThreadID’
testhread.tmp(.text+0x108):undefined reference to 'SDL_Delay’
testhread.tmp:In fucntion ‘killed’:
testhread.tmp(.text+0x1ac):undefined reference to 'SDL_Delay’
testhread.tmp:In fucntion ‘main’:
testhread.tmp(.text+0x220):undefined reference to ‘SDL_Init’

It sounds like the SDL library isn’t being linked in.
What’s your link line?

See ya,
-Sam Lantinga, Software Engineer, Blizzard Entertainment

3

Mr.Sam Lantinga,

As follows it is the steps that I cross-compiling SDL for uclinux

1.using cross-compiling tool to compile SDL,and using --enable-static
–disable-esd(I don’t know why must use this option,if not ,can not
be compiled successfully),–disable-shared(this is a puzzle to me ,too),
–prefix=/sdl-lib
2.then make ;make install;

then under the directory …/sdl-lib three files (libSDL.a
,libSDL.la,libSDLmain.a)are
generated.

3.then cross-compile the demos under directory …/test.
only two files can be compiled successfully(testtypes and testgl);
the link line is :
…
mipsel-linux-ld -d -r -o $@.tmp …/lib/crt0.o $< $(testver_DEPENDENCIES)
…/lib/libc.a
…/…/libgcc.a;
mipsel-linux-ld -T …/elf2flt.ld -Ur -o $@.elf $@.tmp(the files
testver.tmp and
testver.elf can be generated)
mipsel-linux-ld -T …/elf2flt.ld -o $@.gdb $@.tmp (when executing
here,the errors will be
generated)
…/elf2flt.ld -p $@.gdb -o $@.flt -r $@.elf
…

Regards,
Andy