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Re: ld: cannot find -lc (Building gcc for Android toolchain)
17.10.2011 13:41, Alexey Umnov kirjoitti:
Over the last few days I cannot succeed building an android toolchain.
As far as I know the usual strategy of building toolchain is following:
1. build binutils
2. build 1st gcc
3. build libc by means of 1st gcc
4. build final gcc by means of 1st gcc
Not at all!
The usual strategy with already existing targets like with an installed
Android is :
1. build binutils using '--with-sysroot=$sysroot' in configure
2. copy/install/unpack the target's own C library into the chosen
$sysroot
3. build GCC using '--with-sysroot=$sysroot' in configure
If the target's standard C library already exists, there is no sanity
in trying to replace it with something self-made. With the traditional
proprietary/custom targets like the Unices (Solaris, Ultrix, AIX, HP-UX,
Irix,...) there were no sources for their C libraries and the custom
Linux distros like Red Hat, SuSE, Debian always had their own patched
glibc...
Android is AFAIK quite a "custom" Linux and has its own patched C
library, patched GUI libraries etc. Just use them with your own
crosstoolchain, building only binutils and GCC for your cross-host!
Binutils has been configured as follows:
../configure --prefix=$PREFIX --target=$TARGET
, built fine and installed to $PREFIX
The '--with-sysroot=$sysroot' to point to the target C libraries was
forgotten!
Please check that in this maillist is just now another thread for
just your problem! What I wrote, was "how things should succeed"
but the Android case seems to be harder, like giving :
configure: error: No support for this host/target combination.
make[1]: *** [configure-target-libstdc++-v3] Erreur 1
during the libstdc++-v3 configure for the target in gcc-4.6.1
sources :(