I have used arm-elf-gcc at many times with Cstartup.S and Windows Program must run under ARM. When have tried change c to c++ caused this error: Linking: main.elf arm-elf-gcc -mcpu=arm7tdmi -I. -gdwarf-2 -DROM_RUN -DVECTORS_ROM -Os -Wall -W cast-align -Wimplicit -Wpointer-arith -Wswitch -Wredundant-decls -Wreturn-type -Wshadow -Wunused -Wa,-adhlns=Cstartup.lst -MD -MP -MF .dep/main.elf.d Cstartu p.o main.o mem_seg.o mem_seg_impl.o segment.o Cstartup_SAM7.o blinker.o li b_AT91SAM7X256.o std_comm.o --output main.elf -nostartfiles -Wl,-Map=main.map,-- cref -shared -lm -lc -lgcc -dead_strip -lstdc++ --gc-sections -TAT91SAM7x256-R OM.ld c:/winarm/bin/../lib/gcc/arm-elf/4.1.0/../../../../arm-elf/lib\libstdc++ .a(eh_pe rsonality.o): In function `read_encoded_value_with_base':c:/winarms/gcc-4.1.0/gc c/unwind-pe.h:259: undefined reference to `abort' c:/winarm/bin/../lib/gcc/arm-elf/4.1.0/../../../../arm-elf/lib\libstdc++ .a(eh_pe rsonality.o): In function `base_of_encoded_value':c:/winarms/gcc-4.1.0/gcc/unwin d-pe.h:122: undefined reference to `abort' :c:/winarms/gcc-4.1.0/gcc/unwind-pe.h:122: undefined reference to `abort' c:/winarm/bin/../lib/gcc/arm-elf/4.1.0/../../../../arm-elf/lib\libstdc++ .a(eh_pe rsonality.o): In function `size_of_encoded_value':c:/winarms/gcc-4.1.0/gcc/unwin d-pe.h:90: undefined reference to `abort' c:/winarm/bin/../lib/gcc/arm-elf/4.1.0/../../../../arm-elf/lib\libstdc++ .a(eh_te rminate.o): In function `__cxxabiv1::__terminate(void (*)())':../../../../../gcc -4.1.0/libstdc++-v3/libsupc++/eh_terminate.cc:44: undefined reference to `abort' etc. etc. common functions seems missing. I have read some issues like this but cannot find a solution. Any ideas?
Starter wrote: > I have used arm-elf-gcc at many times with Cstartup.S and Windows > Program must run under ARM. ... so you are not "Starter"... I realy like real names or at least names that sound like real names. Anyway. > When have tried change c to c++ caused this error: >... >c:/winarm/bin/../lib/gcc/arm-elf/4.1.0/../../../../arm-elf/lib\libstdc+ +.a(eh_pe > rsonality.o): In function > `read_encoded_value_with_base':c:/winarms/gcc-4.1.0/gc > c/unwind-pe.h:259: undefined reference to `abort' >... So how about just providing a function with this name. I used this code in my few C++ Examples: void abort(void) { while(1); } Martin Thomas
Martin Thomas wrote: > ... so you are not "Starter"... I realy like real names or at least > names that sound like real names. Anyway. Excuse me - my name is well-known in my surroundings and I don't like fake "real" names. Please, leave me some privacy. >> When have tried change c to c++ caused this error: >>... >>c:/winarm/bin/../lib/gcc/arm-elf/4.1.0/../../../../arm-elf/lib\libstdc ++.a(eh_pe >> rsonality.o): In function >> `read_encoded_value_with_base':c:/winarms/gcc-4.1.0/gc >> c/unwind-pe.h:259: undefined reference to `abort' >>... > > So how about just providing a function with this name. I used this code > in my few C++ Examples: > > void abort(void) > { > while(1); > } I think this is not solution here. There are many functions like this (not only "abort") and these maybe needed. I think this is a compiler (linker) internal error and caused by library search mismatch. I can turn this error on and off simply use one (1) expression: queue. If use, it occurs this error.
>> [...] >> So how about just providing a function with this name. I used this code >> in my few C++ Examples: >> >> void abort(void) >> { >> while(1); >> } > I think this is not solution here. Why? What do you expect as "solution"? Since you do not have a system to abort to there is not much you can do in this syscall. Of cause some additional code can be implemented here (blink LED, send debug-output, watchdog-reset...) > There are many functions like this > (not only "abort") and these maybe needed. You did not mention the names so it's difficult to help here. I guess the missing functions are the usual syscall which the libstdc++ relies on to interface with he hardware (sbrk, read, write, etc). > I think this is a compiler > (linker) internal error and caused by library search mismatch. I'm pretty sure that there is no "compiler (linker) internal error". Maybe a search-problem a something with library-ordering. But not an internal error. > I can > turn this error on and off simply use one (1) expression: queue. If use, > it occurs this error. Which queue? From the c++ (ST)-library? This should be the reason why the syscalls are needed and you see the linker-errors. Since the c++- RTL queue needs some syscalls, at least sbrk as interface to the heap. In some configurations you may try -lnosys to bring in a "generic" sbrk without writing own code (take care to provide end, see linker-script).
Martin Thomas wrote: > Why? What do you expect as "solution"? Since you do not have a system to > abort to there is not much you can do in this syscall. Of cause some > additional code can be implemented here (blink LED, send debug-output, > watchdog-reset...) You are right in here but there are another functions. >> There are many functions like this >> (not only "abort") and these maybe needed. > You did not mention the names so it's difficult to help here. I guess > the missing functions are the usual syscall which the libstdc++ relies > on to interface with he hardware (sbrk, read, write, etc). Yes. These ones, isatty and other file functions. No files, op. system and terminal at this system of course. >> I can >> turn this error on and off simply use one (1) expression: queue. If use, >> it occurs this error. > Which queue? From the c++ (ST)-library? This should be the reason why > the syscalls are needed and you see the linker-errors. Since the c++- > RTL queue needs some syscalls, at least sbrk as interface to the heap. > In some configurations you may try -lnosys to bring in a "generic" sbrk > without writing own code (take care to provide end, see linker-script). -lnosys exists but has no effect. I have get an advice to implement my own queue. Is there an only solution - or write fake calls like fread, and all others? Is there any example program without these functions? I have thought programmers of libraries solved this problem at any way.
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