path: root/toolchain
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authorGravatar Giulio Benetti <giulio.benetti@micronovasrl.com>2019-06-14 23:03:37 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@bootlin.com>2019-06-22 19:31:52 +0200
commit4adc06b4f80a68ff3d0eb5ad72879b2cf8514659 (patch)
treed292b2524e4e4f1a5088d11155e60a8e21e1254b /toolchain
parent4e5b4397588e5809ca0d8a6682520044da1ab57a (diff)
toolchain: introduce BR2_TOOLCHAIN_HAS_GCC_BUG_63261
dmalloc and fxload fail to build for the Microblaze architecture with optimization enabled with gcc < 8.x, with the following failure: Error: PC relative branch to label logerror which is not in the instruction space Error: operation combines symbols in different segments The following defconfig allows to reproduce the issue: BR2_microblazeel=y BR2_OPTIMIZE_2=y BR2_KERNEL_HEADERS_5_0=y BR2_GCC_VERSION_7_X=y BR2_PACKAGE_FXLOAD=y The gcc bug was reported at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63261 and is fixed as of gcc 8.x. Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Diffstat (limited to 'toolchain')
1 files changed, 7 insertions, 0 deletions
diff --git a/toolchain/Config.in b/toolchain/Config.in
index 7cdcb0e514..6d1696ea83 100644
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -113,6 +113,13 @@ config BR2_TOOLCHAIN_SUPPORTS_VARIADIC_MI_THUNK
depends on !BR2_or1k
depends on !BR2_xtensa
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63261. This bug no
+# longer exists in gcc 8.x.
+ bool
+ default y if BR2_microblaze
+ depends on !BR2_TOOLCHAIN_GCC_AT_LEAST_8
# Prior to gcc 7.x, exception_ptr, nested_exception and future from
# libstdc++ would only be provided on architectures that support
# always lock-free atomic ints. See