NetCube-Systems-Austria/kumquat-buildroot
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

arch: introduce minimal required gcc version

Browse Source 
Some CPU variants require that a recent-enough gcc be selected. For
example, ARM's cortex-a35 requires gcc-5, while cortex-a73 requires
gcc-7. Same goes for other architectures, of course.

Currently, we hard-code every such conditions in the gcc version choice,
as well as in the individual external toolchains.

However, as we add even more CPU variants, the conditions are getting
more and more complex to write and maintain.

Introduce new symbols, that architectures can select if they have a
specific requirement on the gcc version. gcc and external toolchains
can then properly depend on those symbols.

The burden of maintaining the requirements on the gcc version now falls
down to the architeture, instead of being split up in gcc and all the
external toolchains.

As the oldest gcc version to handle, we can either choose gcc-4.9, as
the oldest version we support in our internal toolchain, or choose
gcc-4.8, as the oldest external toolchain we support (except for the
custom ones, but they'll be handled specifically in upcoming changes).
We choose to go back up to gcc-4.8.

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>
This commit is contained in:
Yann E. MORIN 2017-09-03 11:44:27 +02:00 committed by Thomas Petazzoni
parent 5a0cfbded0
commit 974d97bc26
1 changed files with 21 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
arch/Config.in
View File

@ -261,6 +261,27 @@ config BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT
bool
default y if !BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT
# The following symbols are selected by the individual
# Config.in.$ARCH files
config BR2_ARCH_NEEDS_GCC_AT_LEAST_4_8
bool
config BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9
bool
select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_8
config BR2_ARCH_NEEDS_GCC_AT_LEAST_5
bool
select BR2_ARCH_NEEDS_GCC_AT_LEAST_4_9
config BR2_ARCH_NEEDS_GCC_AT_LEAST_6
bool
select BR2_ARCH_NEEDS_GCC_AT_LEAST_5
config BR2_ARCH_NEEDS_GCC_AT_LEAST_7
bool
select BR2_ARCH_NEEDS_GCC_AT_LEAST_6
# The following string values are defined by the individual
# Config.in.$ARCH files
config BR2_ARCH