Previously, it was possible to select an external toolchain that did not
support the GCC arch tuning the user had selected. This is problematic
because it can lead to confusing error messages during builds [0].
Now, external toolchain selections will be filtered to only those that
support the required GCC version specified by the target arch tuning.
Note: this patch does not touch the Bootlin toolchain config file as it
is generated by a script.
Additional note: there is "soft" support for toolchains prior to GCC 4.8
but there are no accompanying BR2_ARCH_NEEDS_GCC_AT_LEAST_X symbols.
Instead of adding those, just use BR2_ARCH_NEEDS_GCC_AT_LEAST_4_8 which
is the minimum GCC version with claimed support [1].
[0]: https://lists.buildroot.org/pipermail/buildroot/2023-August/671877.html
[1]: https://buildroot.org/downloads/manual/manual.html#requirement-mandatory
Signed-off-by: Vincent Fazio <vfazio@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Currently, glibc depends on !BR2_STATIC_LIBS in all the toolchain
variants.
However, for some architectures, glibc is the only supported libc. In
commit 3b3105328e ("Config.in: only
allow BR2_STATIC_LIBS on supported libc/arch"), we implemented a fix
to avoid configurations were BR2_STATIC_LIBS=y with an architecture
already supported by glibc, because these configurations are
impossible. This commit 3b3105328e
prevents from selecting BR2_STATIC_LIBS=y when the C library used for
the internal toolchain backend is glibc.
However, it introduces a discrepency between how this topic is handled
for internal and external toolchains:
- For internal toolchains, we prevent BR2_STATIC_LIBS=y if glibc is
chosen.
- For external toolchains, we allow BR2_STATIC_LIBS=y in all cases,
and it's each glibc toolchain that has !BR2_STATIC_LIBS
This commit addresses this discrepency by preventing BR2_STATIC_LIBS=y
if glibc is chosen in all cases.
Thanks to this, we can remove the !BR2_STATIC_LIBS dependency on both
the glibc package, and all glibc external toolchains.
Fixes: https://bugs.busybox.net/show_bug.cgi?id=14256
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
[Thomas: update to master, fix the gen-bootlin-toolchains script, add
a comment in the static/shared choice to indicate that static is
supported only with uclibc or musl]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Enable OpenMP support in the following external toolchains:
toolchain-external-arm-aarch64-be
toolchain-external-arm-aarch64
toolchain-external-arm-arm
toolchain-external-codescape-img-mips
toolchain-external-codescape-mti-mips
toolchain-external-codesourcery-amd64
toolchain-external-codesourcery-mips
toolchain-external-linaro-aarch64-be
toolchain-external-linaro-aarch64
toolchain-external-linaro-arm
toolchain-external-linaro-armeb
Signed-off-by: Ed Blake <ed.blake@sondrel.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
For armv8, there are different profiles: A, M and R, like there is for
armv7.
So, rename our internal symbol to mirror what we do for armv7.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Hide the toolchains if the arch requires a gcc version more recent
than the one they provide.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The Linaro toolchains are currently only available on ARMv7-A, but can
in fact also be used to generate 32 bits code for ARMv8 platforms. This
commit therefore adjusts their architecture dependency.
Example, a 32 bits ARM build produces a 32 bits busybox binary:
$ file output/target/bin/busybox
output/target/bin/busybox: setuid ELF 32-bit LSB executable, ARM, EABI5 version 1 (SYSV), dynamically linked, interpreter /lib/ld-linux-armhf.so.3, for GNU/Linux 2.6.32, BuildID[sha1]=16a7a70eb9cac08759e52a260478b9c287f59238, stripped
Which was built for Cortex-A72:
$ ./output/host/usr/bin/arm-linux-gnueabihf-readelf -A output/target/bin/busybox
Attribute Section: aeabi
File Attributes
Tag_CPU_name: "Cortex-A72"
Tag_CPU_arch: v8
Tag_CPU_arch_profile: Application
Tag_ARM_ISA_use: Yes
Tag_THUMB_ISA_use: Thumb-2
Tag_FP_arch: FP for ARMv8
Tag_ABI_PCS_wchar_t: 4
Tag_ABI_FP_rounding: Needed
Tag_ABI_FP_denormal: Needed
Tag_ABI_FP_exceptions: Needed
Tag_ABI_FP_number_model: IEEE 754
Tag_ABI_align_needed: 8-byte
Tag_ABI_align_preserved: 8-byte, except leaf SP
Tag_ABI_enum_size: int
Tag_ABI_VFP_args: VFP registers
Tag_CPU_unaligned_access: v6
Tag_MPextension_use: Allowed
Tag_Virtualization_use: TrustZone and Virtualization Extensions
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit adds a new package for the Linaro external toolchain for the
ARM Big-endian architecture.
The legacy implementation is removed.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Romain Naour <romain.naour@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
