Hello,.

I have a problem  compiling your rrdtool-1.2.19 on my system an 
Alphaserver 4100
(Rawhide) 
...
checking build system type... alphaev56-unknown-linux-gnu
checking host system type... alphaev56-unknown-linux-gnu
checking target system type... alphaev56-unknown-linux-gnu
...

I could compile all the needed libraries, but if I try configure the 
rrdtool I get an error:

...
checking if IEEE math works out of the box... no
checking if IEEE math works with the -ieee switch... no
checking if IEEE math works with the -qfloat=nofold switch... no
checking if IEEE math works with the -w -qflttrap=enable:zerodivide... no
checking if IEEE math works with the -mieee switch... not isnan(NaN) ... 
no
checking if IEEE math works with the -q float=rndsngl switch... no
checking if IEEE math works with the -OPT:IEEE_NaN_inf=ON switch... no
checking if IEEE math works with the -OPT:IEEE_comparisons=ON switch... no
checking if IEEE math works with fpsetmask(0)... no
checking if IEEE math works with signal(SIGFPE,SIG_IGN)... no
configure: error:
Your Compiler does not do propper IEEE math ... Please find out how to
make IEEE math work with your compiler and let me know ([EMAIL PROTECTED]).
Check config.log to see what went wrong ...
...

Therefore I tried to find information about the problem and gcc.
I've found an article 

http://gcc.gnu.org/onlinedocs/gcc/DEC-Alpha-Options.html

How can I implement the required option into the configure file?
Can you implement it?

Steffen 

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