Author Topic: Linker error - Can't use stdlib.h or math.h functions!  (Read 3108 times)

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Offline blue_bear_94

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Linker error - Can't use stdlib.h or math.h functions!
« on: March 04, 2013, 05:37:33 pm »
When I try to use stdlib.h functions (regardless of whether I #include <stdlib.h> or not), I get linker errors like these:
Code: [Select]
bullets.o: In function '_freeList':
bullets.c:(.text+0x384): undefined reference to '_free'
bullets.o: In function '_createNode':
bullets.c:(.text+0x39c): undefined reference to '_malloc'

Same for math.h functions. I also have the fxcglib installed. Are these functions not implemented yet?

Thanks in advance!
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Offline Juju

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Re: Linker error - Can't use stdlib.h or math.h functions!
« Reply #1 on: March 04, 2013, 11:46:44 pm »
How did you compiled your program? What's the gcc command line used to compile this?
« Last Edit: March 04, 2013, 11:47:53 pm by Juju »

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Re: Linker error - Can't use stdlib.h or math.h functions!
« Reply #2 on: March 05, 2013, 12:38:49 am »
Both malloc and free are implemented in <stdlib.h>, but try including the raw library in your build folder and using
Code: [Select]
#include "stdlib.h" to see if that fixes the problem. Otherwise, you're not calling the linker properly.
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Offline blue_bear_94

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Re: Linker error - Can't use stdlib.h or math.h functions!
« Reply #3 on: March 05, 2013, 03:51:25 pm »
How did you compiled your program? What's the gcc command line used to compile this?
Code: [Select]
> sh3eb-elf-gcc bullets.o posnmath.o starvak2.o xpo.o -mb -m4a-nofpu -mhitachi -nostdlib -TC:/Users/Kook/Desktop/TISTUFF/PrizmSDK-0.3/common/prizm.ld -Wl,-static -Wl,-gc-sections -LC:/Users/Kook/Desktop/TISTUFF/PrizmSDK-0.3/lib -lfxcg -lgcc -o C:/Users/Kook/Desktop/TISTUFF/PrizmSDK-0.3/projects/starvak2/starvak2.bin For some reason it's ignoring the standard libs. However, I can't change this because the make.bat file calls make.exe in the /bin folder.
Both malloc and free are implemented in <stdlib.h>, but try including the raw library in your build folder and using
Code: [Select]
#include "stdlib.h" to see if that fixes the problem. Otherwise, you're not calling the linker properly.
Will try!


Edit: tried it, and got the same error.
« Last Edit: March 05, 2013, 03:55:45 pm by blue_bear_94 »
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Offline Juju

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Re: Linker error - Can't use stdlib.h or math.h functions!
« Reply #4 on: March 05, 2013, 04:25:35 pm »
Try -lc in the command line?

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Offline blue_bear_94

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Re: Linker error - Can't use stdlib.h or math.h functions!
« Reply #5 on: March 05, 2013, 04:43:34 pm »
Well, I use the make.bat file, which calls make.exe, so using -lc here doesn't work.
Due to dissatisfaction, I will be inactive on Omnimaga until further notice. (?? THP hasn't been much success and there's also the CE. I might possibly be here for a while.)
If you want to implore me to come back, or otherwise contact me, I can be found on GitHub (bluebear94), Twitter (@melranosF_), Reddit (/u/Fluffy8x), or e-mail (if you know my address). As a last resort, send me a PM on Cemetech (bluebear94) or join Touhou Prono (don't be fooled by the name). I've also enabled notifications for PMs on Omnimaga, but I don't advise using that since I might be banned.
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Offline blue_bear_94

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Re: Linker error - Can't use stdlib.h or math.h functions!
« Reply #6 on: March 07, 2013, 05:30:48 pm »
Deleting the -nostdlib flag in /common/prizm_rules and calling make.bat again resulted in these errors:
Code: [Select]
...: In function 'stack_k':
(.text+0x50): undefined reference to '_stack'
...
_end_k; end
_main_k; __setup_argv_and_call_main
_atexit_k; _atexit
And it goes on and on.
Due to dissatisfaction, I will be inactive on Omnimaga until further notice. (?? THP hasn't been much success and there's also the CE. I might possibly be here for a while.)
If you want to implore me to come back, or otherwise contact me, I can be found on GitHub (bluebear94), Twitter (@melranosF_), Reddit (/u/Fluffy8x), or e-mail (if you know my address). As a last resort, send me a PM on Cemetech (bluebear94) or join Touhou Prono (don't be fooled by the name). I've also enabled notifications for PMs on Omnimaga, but I don't advise using that since I might be banned.
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