Re: Error in the building the Cross-Compiler: xgcc

["Kai Ruottu" <karuottu@freenet.hut.fi>]

Mzlai wrote:

> I am  doing my cross-compiler for a embedded system.
>
>       cd build-binutils
>       ../binutils-2.9.1/configure --target=$target  --prefix=$prefix
>       make all install
>       
>       cd ../build-gcc
>       ../egcs-1.1.2/configure  --target=$target --prefix=$prefix
>                 --with-gnu-as  --with-gnu-ld
>       make cross install
>    
>       cd ../build-newlib
>       ../newlib-1.8.1/configure --target=$target  --prefix=$prefix
>       make all install
>       
>       exit
> 
> When I run the shell program , errors evoked. Maybe it was running 
> in the second step----"make cross the egcs" when the error came.
> On the console,It prints:
>  
>      checking whether the C compiler (/home/tools/build-gcc/gcc/xgcc  
>           -B/home/tools/build-gcc/gcc/ -g )work....   no
>      configure : error : installation or configuration problem:
>         C compiler cannot create executables.
> 
> then the program exited. I don't know where is the error happened and what
> is the reasons. Maybe the "xgcc" is the key of the problem!
>  
> Ask for help from the all the experts!

 This 'Catch-22' or 'Chicken and egg' -problem has been discussed many times
here, but perhaps it doesn't matter to talk about it again...

 To make executables for the target one needs:

  1. a working compiler -- you probably have it after getting the 'gcc' subdir
     ready....

  2. working libs and headers for the target -- you will have them after having
     built newlib for the target...

 So the 'newlib' and 'libgloss' subdirs can be tried to put into the egcs 
source directory structure, so that it builds them before trying libiberty and 
libstdc++.  Or you can manually install what you already have, build newlib 
with the installed 'arm-coff-gcc', install the C-library and continue with 
egcs, now with a working C-library... Then it 'can create executables', the 
default 'target board' seems to be the simulator with GDB...

 Another possibility is to install some pre-built libs & headers (from newlib) 
for arm-coff, like those of mine available via
    www.nettilinja.fi/~ankosken/embtools.htm
and included inside the Cygwin-hosted/arm-coff-targeted toolset. Then build 
egcs and try to build a better C-library for arm-coff... Especially I would
like to hear how one gets the output of doubles to work under arm-coff/elf:

---------------- clip -------------------
e-style >= 1:   "1.234000e+01"
e-style >= .1:  "1.234000e-01"
e-style < .1:   "1.234000e-03"
e-style big:    "0.0000000000002HJJ152IGKMHEKD2IGHFFLI1LJ1HEGGJLGIGLGJ1<IEGMGEIe
+20" 
e-style == .1:  "1.000000e-01"
f-style >= 1:   "12.340000"
f-style >= .1:	"0.123400"
f-style < .1:   "0.001234"
g-style >= 1:   "12.34" 
g-style >= .1:	"0.1234"
g-style < .1:   "0.001234"
g-style big:	"00000000000002HJJ152I.GKMHEKD2IGHFFLI1LJ1HEGGJLGIGLGJ1<IEGMGF"
 0.10000
 0.10000
x0.5000x
0x1
C.473:4559342121M:;e-39
C.473:4559342121M:;e-39
C.473:4559342121M:;e-39
C.473:4559342121M:;e-39
---------------- clip -------------------

instead of those HEKD, IGHFF, HEGG and GIGLG giggles.... (Perhaps I'll look at 
this some day myself too...it may be just the simulator giving these)

Regards, Kai

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