Hello, this time I try to compile the rrdtool-1.2.15. But that fails by running the ./configure command. The following error is logged: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ IEEE Math Checks checking for fpclassify... no checking for fpclassify with <math.h>... yes checking for finite... yes checking for isinf... yes checking if IEEE math works out of the box... not isnan(NaN) ... no checking if IEEE math works with the -ieee switch... no checking if IEEE math works with the -qfloat=nofold switch... not isnan(NaN) ... no checking if IEEE math works with the -w -qflttrap=enable:zerodivide... not isnan(NaN) ... 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)... not isnan(NaN) ... 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 (tobi@xxxxxxxxxx). Check config.log to see what went wrong ... ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I tried 2 compiler versions 3.3.5, 4.1.1 having the same problem. In config.log I've found the following problem may be related to this ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ configure:22957: checking if IEEE math works with the -mieee switch configure:23038: gcc -o conftest -g -O2 -fno-strict-aliasing -Wall -std=gnu99 -pedantic -Wshadow -Wpointer-arith -Wcast-align -Wmissing-prototypes -Wm issing-declarations -Wnested-externs -Winline -W -fPIC -DPIC -mieee conftest.c -lm >&5 conftest.c: In function `main': conftest.c:118: warning: declaration of `nan' shadows a global declaration /usr/include/bits/mathcalls.h:225: warning: shadowed declaration is here configure:23041: $? = 0 configure:23043: ./conftest configure:23046: $? = 1 configure: program exited with status 1 configure: failed program was: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Steffen Pelzetter Abt.: IT Tel. + 49 36962 29 309 Fax. +49 36962 29 345 www.nexans.de ______________________________________________ Nexans Deutschland Industries GmbH & Co. KG Einersbergstraße 1 36404 Vacha Sitz: Hannover Amtsgericht Hannover HRA 25339 Persönlich haftende Gesellschafterin: Nexans Deutschland GmbH Sitz: Hannover Amtsgericht Hannover HRB 60648 Geschäftsführer: Dr. Wolfgang Bedorf (Vors.), Christof Barklage Vorsitzender des Aufsichtsrats: Yvon Raak