This may be more of a question for developers and Tobi, but would it be
possible to either bundle or include the option to use SoftFloat as an
alternative to the missing IEEE 754 floating-point library?
Please see:
* http://www.jhauser.us/arithmetic/SoftFloat.html
*
http://stackoverflow.com/questions/2186788/is-there-an-open-source-c-c-implementation-of-ieee-754-operations
Currently, I'm trying to patch RRDtool to use SoftFloat on my embedded
board, which apparently is missing an IEEE-754 library, but I'm sure others
more familiar with RRDtool could do so with greater ease and "correctness".
Thanks!
Trevor
On 04/30/2013 02:56 PM, Trevor Bowen wrote:
> Hi,
>
> Has anyone discovered how to cross-compile RRDtool for Freescale's P2020
> using their LTIB toolchain? I am getting the familiar missing IEEE
> floating-point math error:
>
> IEEE Math Checks
> checking for fpclassify... no
> checking for fpclassify with <math.h>... yes
> checking for isinf... yes
> checking whether isfinite is broken... no
> 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... 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 (t...@oetiker.ch).
> Check config.log to see what went wrong ...
>
> I am compiling it with the following (simplified) script:
>
> export RFS=/local/cross-compiled/rootfs
> export ARCH=powerpc
> export OS=linux
> export TOOLCHAIN_BASE=/opt/freescale
> export
> TOOLCHAIN_BIN=${TOOLCHAIN_BASE}/usr/local/gcc-4.3.74-eglibc-2.8.74-dp-2/powerpc-none-linux-gnuspe/bin
> export CROSS_COMPILE=${TOOLCHAIN_BIN}/powerpc-none-linux-gnuspe-
> export c=${CROSS_COMPILE}
> export AS=${CROSS_COMPILE}as
> export LD=${CROSS_COMPILE}ld
> export CC=${CROSS_COMPILE}gcc
> export AR=${CROSS_COMPILE}ar
> export STRIP="${CROSS_COMPILE}strip --strip-unneeded"
> export SSTRIP=${CROSS_COMPILE}sstrip
> export OBJCOPY=${CROSS_COMPILE}objcopy
> export OBJDUMP=${CROSS_COMPILE}objdump
> export MAKE=make
> export CFLAGS="-I${RFS}/usr/local/include -L${RFS}/lib"
> export LDFLAGS="-I${RFS}/usr/local/include -L${RFS}/lib"
> export PKG_CONFIG_LIBDIR="$( cd ${RFS}/usr/lib/pkgconfig && pwd )"
> ./configure --host=ppc-linux --build=i586-linux-gnu --prefix=/usr/local
>
> Any suggestions?
>
> Thanks!
>
> Trevor
_______________________________________________
rrd-users mailing list
rrd-users@lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/rrd-users
