CGAL flag options with Qt

[bryanxito]

Hi guys I need help to pass this CGAL command into a Qt project:

g++ -frounding-math -O3  -lCGAL -lgmp main.cpp

g++ -frounding-math -O3  -lCGAL -lgmp main.cpp

To copy to clipboard, switch view to plain text mode 

So far the libraries are linked with this:

LIBS += -L/lib64 -lgmp -lCGAL

LIBS += -L/lib64 -lgmp -lCGAL

To copy to clipboard, switch view to plain text mode 

But I can't pass the flags: -frounding-math -O3

Any ideas? (=

[wysota]

Set them in QMAKE_CXXFLAGS.

[bryanxito]

I have tried:

LIBS += -L/lib64 -lgmp -lCGAL
QMAKE_CXXFLAGS += -frounding-math -O3

LIBS += -L/lib64 -lgmp -lCGAL
QMAKE_CXXFLAGS += -frounding-math -O3

To copy to clipboard, switch view to plain text mode 

And I still getting this error

Explanation: Wrong rounding: did you forget the  -frounding-math  option if you use GCC (or  -fp-model strict  for Intel)?

Explanation: Wrong rounding: did you forget the  -frounding-math  option if you use GCC (or  -fp-model strict  for Intel)?

To copy to clipboard, switch view to plain text mode 

[wysota]

Are the flags you set in the compiler command being ran?

[bryanxito]

Thats weird ! I run again my code with this lines:

LIBS += -L/lib64 -lgmp -lCGAL
QMAKE_CXXFLAGS += -frounding-math -O3

LIBS += -L/lib64 -lgmp -lCGAL
QMAKE_CXXFLAGS += -frounding-math -O3

To copy to clipboard, switch view to plain text mode 

And now all is working fine, I can't explain it maybe a restart of qt was required but I'm not sure about that. Anyway thanks for your advice it was very useful