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authorGravatar Yann E. MORIN <yann.morin.1998@free.fr>2017-09-03 11:44:27 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2017-11-24 22:03:31 +0100
commit974d97bc267d4e529ec3619c6c71e59f8f51833d (patch)
treed436e47a70f3a4118086dbb6b080fd1e0136c523 /arch
parent5a0cfbded075dea4a0416ffcfe7407b8db91d0a4 (diff)
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arch: introduce minimal required gcc version
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/Config.in21
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/Config.in b/arch/Config.in
index c10bf16809..607da36c1d 100644
--- a/arch/Config.in
+++ b/arch/Config.in
@@ -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