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[SOLVED] Problem building R-2.15.3 from source

On 11/07/2013 06:44, Pascal Oettli wrote:
And since this is a ix86 system, you really should be using -mtune=native.

I do not believe the default in 2.15.3 was -O3: it is not in current R, 
and it certainly included -g .
Others who do not follow the instructions?  As the manual says at the end

'Beware of using high levels of optimization, at least initially. On 
many compilers these reduce the degree of compliance to the IEEE model.'