[Buildroot] [PATCH 1/5 v2] arch: add option to disable internal toolchain backend
Yann E. MORIN
yann.morin.1998 at free.fr
Sun Sep 3 09:22:16 UTC 2017
Some architectures or specific cores do not have support in upstream
gcc. Currently, they are individually listed as exclusions in the
toolchain choice.
This poses a maintainance burden, as the knowledge about what gcc
version supports what architecture is split across many places: the
toolchain choice, the gcc version choice, the external toolchains.
As a first step, add a blind option that architectures or individual
cores may select to indicate they lack support in our internal backend.
Actual use of the option will come in followup patches.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Arnout Vandecappelle <arnout at mind.be>
---
Changes v1 ->v2:
- introduce an extra kconfig symbol for positive logic (Thomas)
---
arch/Config.in | 10 ++++++++++
toolchain/Config.in | 1 +
2 files changed, 11 insertions(+)
diff --git a/arch/Config.in b/arch/Config.in
index f385745e47..caf5a318ab 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -250,6 +250,16 @@ config BR2_xtensa
endchoice
+# For some architectures or specific cores, our internal toolchain
+# backend is not suitable (like, missing support in upstream gcc, or
+# no ChipCo fork exists...)
+config BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT
+ bool
+
+config BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT
+ bool
+ default y if !BR2_ARCH_HAS_NO_TOOLCHAIN_BUILDROOT
+
# The following string values are defined by the individual
# Config.in.$ARCH files
config BR2_ARCH
diff --git a/toolchain/Config.in b/toolchain/Config.in
index 584d053058..8866b7da75 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -43,6 +43,7 @@ choice
config BR2_TOOLCHAIN_BUILDROOT
bool "Buildroot toolchain"
select BR2_TOOLCHAIN_HAS_SHADOW_PASSWORDS
+ depends on BR2_ARCH_HAS_TOOLCHAIN_BUILDROOT
depends on !BR2_bf606
depends on !BR2_bf607
depends on !BR2_bf608
--
2.11.0
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