Thanks! I did that and it's working now.

On Aug 31, 3:37 am, Robert Bradshaw <[email protected]>
wrote:
> On Tue, Aug 30, 2011 at 3:08 PM, dkrumm <[email protected]> wrote:
> > I just made a new installation of Sage 4.7.1 and I tried to build the
> > library (although I haven't made any changes to it). I get this error
> > message:
>
> > Building Sage on OS X in 64-bit mode
> > Creating SAGE_LOCAL/lib/sage-64.txt since it does not exist
> > Detected SAGE64 flag
> > Building Sage on OS X in 64-bit mode
>
> > ----------------------------------------------------------
> > sage: Building and installing modified Sage library files.
>
> > Installing c_lib
> > 64 bit mode
> > gcc -o src/convert.os -c -O2 -g -m64 -fPIC -I/Applications/sage.app/
> > Contents/Resources/sage/local/include -I/Applications/sage.app/
> > Contents/Resources/sage/local/include/python2.6 -I/Applications/
> > sage.app/Contents/Resources/sage/local/include/NTL -Iinclude src/
> > convert.c
> > sh: gcc: command not found
> > scons: *** [src/convert.os] Error 127
> > ERROR: There was an error building c_lib.
>
> > I've tried this on two different machines, with the same result. Any
> > ideas of what I'm doing wrong?
>
> "gcc: command not found" means that you need to install the C compiler
> gcc. 
> Seehttp://www.sagemath.org/doc/faq/faq-usage.html#what-are-sage-s-prereq...
>
> - Robert

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