how solve this error: g++ :error: unrecognized argument in option '-mtune=cortex-a15.cortex-a7'

Question

I decide to Compilie Qt5.8 on XU4 by this guide : http://freecode.hu/sbcomp/2016/08/15/compiling-qt-5-8-on-odroid-xu4/ but in step 4 , i get this error:

make:warning:file '/usr/include/string.h' has modification time 1e+07 s in the future
g++-4.8.real:error:unrecognized argument in option '-mtune=cortex-a15.cortex-a7'
g++-4.8.real:note:valid argumentd to '-mtune=' are: arm1020e ....

please help me to solve this error, Thanks for all.

score 2 · Accepted Answer · answered Jan 27 '17 at 20:50

after one hour,i solved my problem by editing qmake.config file: changing this line which that tutorial said: QMAKE_CFLAGS += -mcpu=cortex-a15 -mfpu=neon-vfpv4 -mtune=cortex-a15.cortex-a7 -mfloat-abi=hard

to this : QMAKE_CFLAGS += -mcpu=cortex-a15 -mfpu=neon-vfpv4 -mtune=cortex-a15 -mtune=cortex-a7 -mfloat-abi=hard

how solve this error: g++ :error: unrecognized argument in option '-mtune=cortex-a15.cortex-a7'

1 Answers1