Hi,
thank you again for your help!
* On Fri, Apr 29, 2011 at 10:47 PM, Ian Lance Taylor <iant@xxxxxxxxxx> wrote:
> * Steffen Dettmer <steffen.dettmer@xxxxxxxxxxxxxx> writes:
>
>> If I understand correctly, it attempts to builb libiberty for
>> my target platform? I don't need it.
>
> It is built because libstdc++ might use some things defined in
> libiberty. If you are building for C only then you don't need
> it, and it shouldn't be built. If you are building for C++
> also then you may need it and gcc will try to build it.
Yes, but I tried without --disable-libiberty and without C++!
I just restarted with configure in a new directory and it is
reproducible.
Here my options:
$ ../gcc-4.6.0/configure \
--prefix=/usr/local/exp/gcc-4.6.0/ \
--enable-languages=c \
--target=arm-elf \
--program-prefix=arm-elf- \
--with-sysroot=/usr/local/build/gcc/sysroot/ \
--enable-interwork --enable-multilib \
--enable-target-optspace --with-float=soft \
--with-zlib=no \
--disable-libssp \
--disable-shared
Is it correct to disable C++ by giving a --enable-languages list
with is simply not includeing c++?
Did I use the options correctly?
Then I tried:
$ make inhibit_libc=true
After some hours ("felt-time") compilation time I get:
make[2]: Leaving directory `...gcc/gcc-4.6.0-arm/arm-elf/libquadmath'
Checking multilib configuration for libiberty...
mkdir -p -- arm-elf/libiberty
Configuring in arm-elf/libiberty
...
checking for library containing strerror... configure:
error: Link tests are not allowed after GCC_NO_EXECUTABLES.
make[1]: *** [configure-target-libiberty] Error 1
How do I disable libiberty for target?
My target has no strerror (not even errno).
>> When I give `--disable-libiberty', I get an error earlier (that
>> is, there is no rule to make target ../libiberty/libiberty.a or
>> similar).
>
> Right, --disable-libiberty controls the host libiberty, not the
> target one.
(If I understand correctly, then this makes no sense, because gcc
always needs it...).
Actually, the option seems to control BOTH host and target builds.
ok, so how do I disable it for the target only (but not for host)?
(It works when I re-run configure with --disable-libiberty and
re-run make, which still has the host lib but then does not
attempt to build the target lib and works).
Do you have another tip?
Regards,
Steffen
