This allows building newlib-nano in addition to newlib and picolibc,
allowing users to select between C libraries within the same toolchain.
Signed-off-by: Keith Packard <keithp@keithp.com>
This adds another mode to do_gcc_core_backend that builds libstdc++
against an alternate libc implementation.
Signed-off-by: Keith Packard <keithp@keithp.com>
Currently when building cross-canadian toolchain for macOS
the folowing error happens when GCC is configured:
|ld: illegal text-relocation to '___gmp_binvert_limb_table' in
|... /.build/... /buildtools/complibs-host/lib/libgmp.a(mp_minv_tab.o) from '___gmpn_divexact_1' in
|... /.build/... /buildtools/complibs-host/lib/libgmp.a(dive_1.o)
|collect2: error: ld returned 1 exit status
Apparently this might be solved with GMP configured with "--with-pic",
even though we're talking about static library here.
That solution was found here:
https://github.com/Homebrew/homebrew-core/pull/25470
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Even though GCC as a compiler has nothing to do with a C library
being used it still makes sense to know about Newlib's compact
implementation of IO functions:
* For targets like MSP430 which require to have such a tuned
Newlib if "-mtiny-printf" is passed to the GCC's command-line [1]
* For correct compilation of the following GCC's own DejaGnu tests [2]:
- gcc/testsuite/gcc.c-torture/execute/920501-8.c
- gcc/testsuite/gcc.c-torture/execute/930513-1.c
- gcc/testsuite/gcc.dg/torture/builtin-sprintf.c
- gcc/testsuite/gcc.c-torture/execute/ieee/920810-1.x
[1] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=02afb6a9321fbfb435452636cedc2cd43f0c4fd2
[2] https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=571bbd0d48d5872eacbd0b681fce6e1ae754520b
So we add that missing cross-dependency now.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Similar to commit 57679b5e ("Disable context functions for Thumb") when
building for thumb we need to unset UCLIBC_HAS_CONTEXT_FUNCS.
Fixes#1397
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Since glibc 2.27 glob interface was changed [1] and so
"glob" & "glob64" symbols require glibc 2.27+.
For us that means if we build Binutils on a machine with glibc 2.27+
produced binaries won't be any longer usable on machines with older
glibc.
As an example [2]: build on Ubuntu 18.04 (with glibc 2.27) and try to run
on CentOS 7.x (with glibc 2.17), you'll see this:
---------------------->8-------------------
ldd ld
ld: /lib64/libc.so.6: version `GLIBC_2.27' not found (required by ld)
---------------------->8-------------------
Now given glob is not really used by Binutils itself (only needed by GDB)
and we build Binutils & GDB separately let's make at least Binutils
more portable.
In theory we may even try to do the same hack for GDB forcing it to use
imported glob implementation. But since GDB is now built strictly by C++
compiler we'll get waaay to many incompatibilities due to multiple changes
of C++ ABI in between GCC 7.5 of Ubuntu 18.04 and GCC 4.8.5 of CentOS 7.x,
so there's no point to even try.
[1] https://sourceware.org/git/?p=glibc.git;a=commit;h=ccf970c7a77e86f4f5ef8ecc5e637114b1c0136a
[2] https://github.com/zephyrproject-rtos/sdk-ng/issues/280
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
While building a canadian toolchain for windows host (any target),
the build failed for m4 host companion_tool with a recent mingw-w64
(at least 7.0.0).
m4 needs stack smashing protection which is not part of mingw-w64 c
library and an explicit trigger to link w/ libssp is needed.
Signed-off-by: Florent Valette <florent.valette@gmail.com>
By setting glibc build system default_cflags to be empty before
building, we will enforce the build system to only use the crosstool-ng
CFLAGS when building glibc.
Properly solves the issue identified in #1396.
Signed-off-by: Hans-Christian Noren Egtvedt <hegtvedt@cisco.com>
picolibc is another bare-metal C library, and so should be mapped
to CT_TARGET_SYS just like newlib does.
Signed-off-by: Keith Packard <keithp@keithp.com>
Before patches for specific package were searched in
packages/${pkg_name}/${version}. This means that with usage of custom
version, patches wont be applied. This commit makes ct-ng search bundled
patches also in packages/${pkg_name} directory. That means that we can
put some patches in this directory, that will be applied to any version
of this component.
This adds support for using picolibc instead of newlib on embedded
systems.
Signed-off-by: Keith Packard <keithp@keithp.com>
v2:
Add check for meson and ninja
Sync option default values with current picolibc defaults
Remove xtensa sys header file install as those aren't in picolibc
This commit updates the GDB build script to specify `-static-libgcc`
when `CT_GDB_NATIVE_STATIC_LIBSTDCXX` is enabled. Both libgcc and
libstdc++ are considered to be part of the "standard libraries," and
should be specified by the same flag (the configuration symbol could
potentially use a better name and/or further indirection).
This also semantically aligns the `CT_GDB_NATIVE_STATIC_LIBSTDCXX`
with the equivalent GCC configuration `CT_CC_GCC_STATIC_LIBSTDCXX`,
which also enables static linking of both libgcc and libstdc++.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
This commit fixes an incorrect reference to the configuration
`CT_GDB_NATIVE_STATIC_LIBSTDCXX` in the GDB build script.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
-- c6x: Add support for c6x product families to pass on to uClibC-ng
-- c6x: Fix multilib support
-- c6x: Add patch fix internal instruction error (GCC 57295)
Signed-off-by: Dan Tejada <dan.tejada@cantada.com>
GLIBC 2.31 needs --with-cpu=ultrasparc for both 32/64-bits now, and
--with-cpu only sets the CPU model for the "primary" bitness.
Signed-off-by: Alexey Neyman <stilor@att.net>
This commit adds support for the newlib configuration option
'--enable-newlib-retargetable-locking'.
Signed-off-by: Stephanos Ioannidis <root@stephanos.io>
I was trying to build static binaries for a range of Broadcom soft-float ARMv7
SoCs and kept getting SIGILL, although I was targeting Cortex A7 (and A5,
later), even on A9 and A15.
I found out that once I add -msoft-float, +mp+sec is to blame:
Attribute Section: aeabi
File Attributes
- Tag_CPU_name: "7VE"
+ Tag_CPU_name: "7"
Tag_CPU_arch: v7
- Tag_CPU_arch_profile: Application
- Tag_ARM_ISA_use: Yes
Tag_THUMB_ISA_use: Thumb-2
Tag_ABI_PCS_wchar_t: 4
Tag_ABI_FP_rounding: Needed
@@ -12,8 +10,5 @@ File Attributes
Tag_ABI_FP_number_model: IEEE 754
Tag_ABI_align_needed: 8-byte
Tag_ABI_enum_size: int
Tag_ABI_optimization_goals: Aggressive Size
Tag_CPU_unaligned_access: v6
- Tag_MPextension_use: Allowed
- Tag_DIV_use: Allowed in v7-A with integer division extension
- Tag_Virtualization_use: TrustZone and Virtualization Extensions
(This is the readelf -A diff, before and after armv7-a+nofp -> armv7+nofp).
I kept getting SIGILL even after building my application with a toolchain built
with the correct CFLAGS and found out that crosstool-ng doesn't pass the host
CFLAGS when building musl, which pollutes my binary with these ARMv7 extensions.
Signed-off-by: Dima Krasner <dima@dimakrasner.com>
The glibc will append the content of the CFLAGS variable,
overriding previous flags.
If unset, the CFLAGS variable is not empty, so explicitly set it.
Instead prepend the default CFLAGS flags.
Signed-off-by: Norbert Lange <nolange79@gmail.com>
Fixes: #887
On some systems the file command identifies a pie executable as a shared
object. Update do_finish() to handle this case so that they are stripped
as well.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
