Hello Rainer,
Rainer Tammer wrote:
> 1. libm
>
> Some tests need libm (sample):
>
> xlc -g -o test-asin test-asin.o ../gllib/libgnu.a
> ld: 0711-317 ERROR: Undefined symbol: .asin
> ld: 0711-317 ERROR: Undefined symbol: asin
This is caused by an assumption that gnulib/m4/mathfunc.m4 makes,
that asin() will be in libm if and only if pow() is in libm. This is not
true here:
checking whether pow can be used without linking with libm... yes
So, can you please test whether the functions are in libm individually?
With this shell code:
for func in acos asin atan atan2 cbrt copysign cos cosh erf erfc exp \
fmod hypot j0 j1 jn lgamma log log10 log1p pow remainder \
sin sinh sqrt tan tanh y0 y1 yn; do
(echo '#include <math.h>'; echo "double (*funcptr)() = (double
(*)())$func;"; echo 'int main() {}') > conftest.c
if xlc conftest.c > /dev/null 2>/dev/null; then
echo "$func is in libc"
else
echo "$func requires libm"
fi
done
Bruno
