[uClibc] configure-target-libstdc++-v3: error: Link tests are not allowed after GCC_NO_EXECUTABLES.

[Jun Sun]

It appears I am hitting the same problem again.  Does anybody know if
it is *possible* to build ARM uclibc root fs with softfloat and c++ support?

Here is my config:

. 20050831 buildroot
. binutils 2.16.1
. gcc 3.4.4
. kernel 2.4.31 header
. lastest uclibc snapshot

I also attached the .config file.

Thanks in advance.

Jun

On Sun, Dec 05, 2004 at 09:34:12AM +0000, denis polevoi wrote:
> during compile of buidlroot
> ...
> checking for stdint.h... (cached) yes
> checking for main in -lm... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
> make[1]: *** [configure-target-libstdc++-v3] Error 1
> 
> this error appears when i turn off in uclibc support for
> Target CPU has a floating point unit (FPU)
> 
> i collect test system on suse 9.1 with gcc-3.3.3 for i486sx note / that has no math coprocessor or fpu :)
> uClibc-cvs   linux-libc-headers-2.6.9.1   binutils-2.15.94.0.1   gcc-3.4.3   
> 
> so / in other words 
> 
> 1 when uClibc.config
>     ...
>    CONFIG_486=y
>    ARCH_HAS_MMU=y
>    UCLIBC_HAS_FLOATS=y
>    HAS_FPU=y
>    # DO_C99_MATH is not set
>    ...
> buildroot ok
> 
> 2 when uClibc.config
>    ...
>    CONFIG_486=y
>    ARCH_HAS_MMU=y
>    UCLIBC_HAS_FLOATS=y
>    # HAS_FPU is not set
>    # DO_C99_MATH is not set
>    ...
> buildroot error
> 
> there is log of some errors in /buildroot/toolchain_build_i386/gcc-3.4.3/libstdc++-v3/config.log
>    ...
>    errors
>    ...
>    configure:69854: checking for main in -lm
>    configure:69862: error: Link tests are not allowed after GCC_NO_EXECUTABLES.
>    ...
> 
> maybe / there is some correlation with arm-softfloat.patch
> any advice or help would be appreciated
> 
> with the best regards
> denis polevoi

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