[Rd] gcc optimization flag when building R

From: Vadim Ogranovich <vograno_at_evafunds.com>
Date: Sat 21 Aug 2004 - 03:20:02 EST


Hi,  

I am building R on RH Linux 7.3 and I noticed that ./configure does not set the optimization flag, -O or -O2, for gcc, but does set for g++ and g77. Why is that? Should I try to set it manually, if yes how?  

Thanks,
Vadim  

P.S. This is the bottom portion of the ./configure run    

R is now configured for i686-pc-linux-gnu  

  Source directory: .
  Installation directory: /usr/local  

  C compiler:                gcc -D__NO_MATH_INLINES -mieee-fp -DNO_PURE

-Wchar-subscripts -Wformat -Wimplicit -Wreturn-type -Wswitch -Wreorder
-Wwrite-strings -Woverloaded-virtual -Wshadow -Wno-ctor-dtor-privacy
-m486 -fPIC -DOSRELMAJOR=2 -DOSRELMINOR=4
  C++ compiler:              g++ -mieee-fp -g -O2
  Fortran compiler:          g77 -mieee-fp -g -O2
 
  Interfaces supported:      X11, tcltk
  External libraries:        readline, BLAS(generic)
  Additional capabilities:   PNG, JPEG
  Options enabled:           R profiling
 
  Recommended packages:      yes


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https://stat.ethz.ch/mailman/listinfo/r-devel Received on Sat Aug 21 03:25:38 2004

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