1.0.18 changed the dependencies for the static libraries, notably
in libc/Makefile.in. This resulted in packing a lot of unrelated
stuff into libc.a, including (sic!) a nested .a library and stuff
from other libraries such as libdl. This results in a failure to
statically link with thus created libc.a:
.../libc.a(libdl.os):(.literal+0x74): undefined reference to `_dl_tlsdesc_return'
This was breaking xtensa-*-uclibc sample.
Signed-off-by: Alexey Neyman <stilor@att.net>
1.0.15 only kept a single LINUXTHREADS option, and renamed it, making it
no longer option-compatible with uClibc.
The option for "1.0.14 or later" version of uClibc-ng is not currently
used; rename it to "1.0.15 or later" and use it to handle newer
uClibc-ng's linuxthreads.
m68k happens to be the only sample using linuxthreads.
Signed-off-by: Alexey Neyman <stilor@att.net>
In preparation for multilib support, use the same "backend" model that
is already employed by glibc and musl.
Also, the verbosity setting descriptions were swapped. V=2 is actually
less verbose than V=1: V=1 prints full commands, while V=2 prints 'CC
<file> <defines>'.
Signed-off-by: Alexey Neyman <stilor@att.net>
- Dump CT_LIBC_EXTRA_CC_ARGS: instead, treat CT_LIBC_EXTRA_CFLAGS as
arguments to CC (or they are not applied to .S, for example).
Combine them with multi_flags and CT_TARGET_CFLAGS in proper order.
- Analyze thus combined flags to determine --with-fp/--without-fp.
Don't need to check CT_ARCH_FLOAT - it is reflected in
CT_TARGET_CFLAGS anyway. Check more soft/hard float options defined
on different architectures.
- Drop checking for endianness flags: they are not reflected in
configure arguments in any way, and they're already present in CFLAGS
(either via multi_flags or via CT_TARGET_CFLAGS). Besides,
CT_ARCH_ENDIAN_OPT was actually called CT_ARCH_ENDIAN_CFLAG, so this
was a no-op anyway.
Signed-off-by: Alexey Neyman <stilor@att.net>
On some arches (e.g. MIPS) the options like -mabi do not work if
specified more than once (see the comment in 100-gcc.sh). Therefore,
we need to determine which of the options produced by <arch>.sh can
be passed to multilib builds and which must be removed (i.e., which
options vary among the multilibs).
This presents a chicken-and-egg problem. GCC developers, in their
infinite wisdom, do not allow arbitrary multilib specification to be
supplied to GCC's configure. Instead, the target (and sometimes some
extra options) determine the set of multilibs - which may include
different CPUs, different ABIs, different endianness, different FPUs,
different floating-point ABIs, ... That is, we don't know which parts
vary until we build GCC and ask it.
So, the solution implemented here is:
- For multilib builds, start with empty CT_ARCH_TARGET_CFLAGS/LDFLAGS.
- For multilib builds, require core pass 1. Pass 1 does not build any
target binaries, so at that point, our target options have not been
used yet.
- Provide an API to modify the environment variables for the steps that
follow the current one.
- As a part of multilib-related housekeeping, determine the variable
part of multilibs and filter out these options; pass the rest into
CT_TARGET_CFLAGS/LDFLAGS.
This still does not handle extra dependencies between GCC options (like
-ma implying -mcpu=X -mtune=Y, etc.) but I feel that would complicate
matters too much. Let's leave this until there's a compelling case for
it.
Also, query GCC's sysroot suffix for targets that use it (SuperH,
for example) - the default multilib may not work if the command line
specifies the default option explicitly (%sysroot_suffix_spec is not
aware of multilib defaults).
Signed-off-by: Alexey Neyman <stilor@att.net>
Written by Bryan Hundven.
Modified by Alexey Neyman to actually add the option to gcc.in.
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Signed-off-by: Ray Donnelly <mingw.android@gmail.com>
Signed-off-by: Alexey Neyman <stilor@att.net>
Now that libc backend installs the libraries into the directory reported
by gcc as 'multi-os-directory', sh4 libraries are installed into a '!m4'
subdirectory. This directory then confuses GNU ld, which assumes the
exclamation mark to be a word separator and attempts to link to
'/usr/lib' (a directory). However, if multilib is enabled, the default
libraries are installed into the [expected] '/usr/lib/./'. This looks
like an artifact of SuperH's unique way of specifying the multilibs to
be built in GCC (which may list exclusions, starting with '!').
Signed-off-by: Alexey Neyman <stilor@att.net>
If EXPERIMENTAL is not set, the only choice for version is the set of
released versions - currently, 1.1.14. But this only option is disabled
because it is also marked EXPERIMENTAL; this leaves no available choices
in the configuration.
Marking MUSL as experimental: it seems to have header issues which
prevent, for example, gdbserver from building. musl copied chunks of
ptrace.h code from the kernel into its own headers, which now clash with
Linux kernel headers. Manifests at least on SH4 target.
Also, musl breaks in powerpc builds: GCC balks at it with "unsupported
DEFAULT_LIBC" message. Also, 64-bit powerpc and mips are not supported.
So, until someone figures out the dependencies for musl in config/, mark
it experimental.
Signed-off-by: Alexey Neyman <stilor@att.net>
GLIBC 2.23 dropped support for pre-v9 SPARC in pthreads. Pass host
triplet with s/sparc/sparcv9/ replacement for 2.23.
Signed-off-by: Alexey Neyman <stilor@att.net>
We now only support glibc >=2.18
This now enables us to clean up glibc support!
Also, add a comment about glibc 2.20 as the point which glibc no longer
supports not building with pthread.
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
Kernel revisions updated to match kernel.org.
Update includes removal of 4.2.x kernel (since it was EOL),
addition of 4.4.x kernel, and marking of 4.3.x as EOL.
Signed-off-by: Yogesh Sharma <YogeshASharma@gmail.com>
