Mipsel - big float problem with g++, not gcc (crosstool-ng.1.3.4)

["Yatko" <yatko at gmx dot net>]

Hello list, 

we are trying to compile a program which is written in c++.
All the outputs for float values are NAN. After some research we was able to produce this on a simple testprogram see below (fl2.c):

g++ configured as shown below:
$ mipsel-unknown-linux-gnu-g++ -v
Using built-in specs.
Target: mipsel-unknown-linux-gnu
Configured with: /crosstool-ng-1.13.4/.build/src/gcc-4.3.2/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=mipsel-unknown-linux-gnu --prefix=/x-tools/mipsel-unknown-linux-gnu --with-sysroot=/x-tools/mipsel-unknown-linux-gnu/mipsel-unknown-linux-gnu/sysroot --enable-languages=c,c++ --disable-multilib --with-arch=mips1 --with-abi=32 --with-float=soft --with-pkgversion='crosstool-NG 1.13.4' --enable-__cxa_atexit --disable-libmudflap --disable-libgomp --disable-libssp --with-gmp=/crosstool-ng-1.13.4/.build/mipsel-unknown-linux-gnu/build/static --with-mpfr=/crosstool-ng-1.13.4/.build/mipsel-unknown-linux-gnu/build/static --enable-threads=posix --enable-target-optspace --with-local-prefix=/x-tools/mipsel-unknown-linux-gnu/mipsel-unknown-linux-gnu/sysroot --disable-nls --enable-c99 --enable-long-long
Thread model: posix
gcc version 4.3.2 (crosstool-NG 1.13.4) 



program in action:
[ mipsel-mips32-linux-gnu-g++ fl2.c -o fl2 ]
$./fl2
min float value == nan
max float value == nan
 
[ mipsel-mips32-linux-gnu-g++ fl2.c -o fl2 -static ]
$./fl2
FATAL: kernel too old
Segmentation fault
 
[ mipsel-mips32-linux-gnu-g++ fl2.c -o fl2 ] (changing in the program float to double works, but we need to use floats)
$./fl2
min float value == 0.000000
max float value == 340282346638528859811704183484516925440.000000

 ---
 
testprogram reproduce this problem:
compile with g++, not gcc:
mipsel-mips32-linux-gnu-g++ fl2.c -o fl2

fl2.c:
#include <float.h>
#include <stdio.h>
 
int main()
{
float minval = FLT_MIN; // with float NAN
float maxval = FLT_MAX; // with float NAN
 
printf("min float value == %f\n"
"max float value == %f\n",
(double)minval, maxval);
 
return 0;
}

all kind of support is much appreciated.
Thanks !
Yatko
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