With Microblaze Gcc version 4.9 build hangs due to a bug discovered
for Gcc 4.9 only. Since Gcc 4.9 is not maintaned anymore it doesn't
make sense to report this bug in Gcc bugzilla and use
BR2_TOOLCHAIN_HAS_GCC_BUG_. So let's check if we're building for
Microblaze with Gcc version < 5.x and work around the bug forcing the
use of -O0.
To reproduce this bug build with following defconfig:
'
BR2_microblazeel=y
BR2_ENABLE_DEBUG=y
BR2_OPTIMIZE_2=y
BR2_KERNEL_HEADERS_5_0=y
BR2_TOOLCHAIN_BUILDROOT_LOCALE=y
BR2_GCC_VERSION_4_9_X=y
BR2_TOOLCHAIN_BUILDROOT_CXX=y
BR2_TOOLCHAIN_BUILDROOT_FORTRAN=y
BR2_GCC_ENABLE_LTO=y
BR2_PACKAGE_SQLITE=y
'
Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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