On Sun, Aug 14, 2016 at 8:29 PM, <stim...@comcast.net> wrote:
> One sample configure I'm trying, where "/mnt" is a loopback mounted clone of
> the aarch64 system:
> ${SRC}/configure
> --prefix=/usr/local/aarch64-linux-gnu/gcc-linaro-6.1-2016.07
> --target=aarch64-linux-gnu \
> --with-build-sysroot=/mnt \
> --enable-languages=c,c++ \
> --includedir=/mnt/usr/include
The problem here is that you are using --with-build-sysroot but not
--with-sysroot. --with-sysroot enables support for sysroots.
--with-build-sysroot changes the sysroot value used during the build,
but does not itself enable sysroot support. So using
--with-build-sysroot without --with-sysroot is useless. This is
mentioned in the install docs. You can specify --with-sysroot=/ to
enable sysroot support, without specifying an alternative host sysroot
dir. That makes the build succeed.
I think the --includedir option here is useless. includedir is
supposed to be for the dir where gcc header files are installed, which
is not /usr/include, but rather $prefix/include. This should not be
necesary but appears to be harmless.
Jim
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