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qt: fix build on powerpc_e500mc

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gcc bug internal compiler error: in validate_condition_mode, at
config/rs6000/rs6000.c:180744. Bug is fixed since gcc 7.
Workaround is to set -mno-isel, see
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60818 and
https://gcc.gnu.org/ml/gcc-patches/2016-02/msg01036.html

This bug is also raised on BR2_powerpc_8540, BR2_powerpc_8548 and
BR2_powerpc_e5500.

Fixes:
 - http://autobuild.buildroot.net/results/9b9d11b3281a72c8f54fc675408acb96d24d8e7e

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 75f975f8ad)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Fabrice Fontaine 2018-08-30 18:31:46 +02:00 committed by Peter Korsgaard
parent 5ca1c55a83
commit c70b6f77d6
1 changed files with 9 additions and 0 deletions
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9
package/qt/qt.mk
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@ -32,6 +32,15 @@ QT_LDFLAGS = $(TARGET_LDFLAGS)
# use an older c++ standard to prevent build failure
QT_CXXFLAGS += -std=gnu++98
# gcc bug internal compiler error: in validate_condition_mode, at
# config/rs6000/rs6000.c:180744. Bug is fixed since gcc 7.
# Workaround is to set -mno-isel, see
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60818 and
# https://gcc.gnu.org/ml/gcc-patches/2016-02/msg01036.html
ifeq ($(BR2_powerpc_8540)$(BR2_powerpc_8548)$(BR2_powerpc_e500mc)$(BR2_powerpc_e5500):$(BR2_TOOLCHAIN_GCC_AT_LEAST_7),y:)
QT_CXXFLAGS += -mno-isel
endif
# Qt has some assembly function that are not present in thumb1 mode:
# Error: selected processor does not support Thumb mode `swp r3,r7,[r4]'
# so, we desactivate thumb mode