What is an "exception" in C? There is no CPP (.cpp or .cxx) code in any of these libraries.
Interesting thing though: cmem has a userspace and kernelspace component. TI does really nasty stuff, like pull in .h files from the kernel and whatnot. I just tried again against the 2.6.38 kernel (was 2.6.36 this morning) and there is no error. http://lxr.free-electrons.com/ident?i=__aeabi_unwind_cpp_pr0 Perhaps it's just something in my .config that turns that on or off in the kernel. AJ ONeal On Mon, Apr 18, 2011 at 3:06 PM, Michael Hope <michael.h...@linaro.org>wrote: > On Tue, Apr 19, 2011 at 5:39 AM, AJ ONeal <coola...@gmail.com> wrote: > > > > I'm compiling an application built with TI's DVSDK 3 *[0]. > > > > > > > > > /home/user/ti/dvsdk/dvsdk_3_01_00_10/linuxutils_2_25_02_08/packages/ti/sdo/linuxutils/cmem/lib/cmem.a470MV(cmem.o470MV):(.ARM.exidx+0x0): > > undefined reference to `__aeabi_unwind_cpp_pr0' > > > > > > > > arm-linux-gnueabi-gcc --version > > arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.5.2-5ubuntu2~ppa1) 4.5.2 > > arm-linux-gnueabi-ld --version > > GNU ld (GNU Binutils for Ubuntu) 2.21.0.20110302 > > > > More full output is here (but it isn't particularly helpful due to TI's > RTSC > > make system's black-magic) > > https://gist.github.com/925674 > > FYI: the MV in cmem.a470MV stands for MontaVista. > > This name is hard-coded somewhere even though it's not being linked > against > > a MontaVista system. > > I believe the 470 means that it should work with ARMv4 through ARMv7, but > > I'm not positive. > > > > My googling suggest that this is a toolchain bug and that the best way > > around the issue is to create a file which defines the function as a void > > dummy and include it. > > http://www.codesourcery.com/archives/arm-gnu/msg03604.html > > http://comments.gmane.org/gmane.comp.boot-loaders.u-boot/78649 > > > http://www.cs.fsu.edu/~baker/devices/lxr/http/ident?i=__aeabi_unwind_cpp_pr0 > > > > I have a script that I'll post shortly with instructions as to how to > setup > > TI's DVSDK with Linaro > > AJ ONeal > > > > [0] I'm not using the latest DVSDK version 4 because the paths and such > are > > so hard-coded for the 2009q3 version of codesourcery on ubuntu 10.04 LTS > > that I don't know where to start fixing it. > > Hi AJ. __aeabi_unwind_cpp_pr0 is part of the standard ARM exception > handling code and helps in unwinding the stack frame when an exception > occurs. This suggests that the binary cmem.a470MV can throw > exceptions and therefore needs exception handling. > > I don't think this is a toolchain bug as this function is included in > libgcc_eh.a and is normally pulled in automatically. Could you add > '-v' to your linker flags and send through the result? > > -- Michael >
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