How to add these compiler flags while compiling?

[Anand]

Hello,

I want to add these compiler flags while compiling:

-O2 -march=$arch -mtune=$cpu

where $arch=i486 and $cpu=i686

How to do this?

Anand

[Liviu Lalescu]

The flags can be modified the best way in src/interface/interface.pro: write:

QMAKE_CXXFLAGS_RELEASE+=-O2 -march=$arch -mtune=$cpu (I am not sure if you can use $arch and $cpu)

or

QMAKE_CXXFLAGS_RELEASE+=-O2 -march=i486 -mtune=i686 (if above does not work).

(http://doc.trolltech.com/4.4/qmake-variable-reference.html#qmake-cxxflags-release)

You don't need to add -O2, it is added for release mode.

I am not sure if you need to add also to fet.pro and src/src.pro.

Then make distclean and qmake and make again.

Please let me know.