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Re: Testing __float128


Il 01/09/2010 16.23, Tobias Burnus ha scritto:
On 09/01/2010 04:09 PM, Angelo Graziosi wrote:
So, what does Cygwin people need to have QP with gfortran?

I am not sure whether it cures the problem, but you might want to try the patch at http://gcc.gnu.org/ml/gcc-patches/2010-09/msg00040.html (for GCC 4.6) before building libquad. If it works, you can try to build libgfortran with libquad support.


I have rebuilt gcc-20100828 snapshot with those patches (which apply cleanly),


$ gcc-4.6 -v
Using built-in specs.
COLLECT_GCC=gcc-4.6
COLLECT_LTO_WRAPPER=/usr/local/gfortran/libexec/gcc/i686-pc-cygwin/4.6.0/lto-wrapper.exe
Target: i686-pc-cygwin
Configured with: /tmp/gcc-4.6-20100828/configure --prefix=/usr/local/gfortran --program-suffix=-4.6 --enable-languages=c,c++,fortran --enable-checking=release --enable-threads=posix --enable-libgomp --disable-bootstrap --disable-libmudflap --disable-shared
Thread model: posix
gcc version 4.6.0 20100828 (experimental) (GCC)


Then I have tried to build libquad. Now float128 is supported,

[...]
checking whether __float128 is supported... yes
[...]

but it fails in linking,

[...]
/bin/sh ../libtool --tag=CC --mode=link gcc-4.6 -g -O2 -no-undefined -version-info 0:0:0 -o libquad.la -rpath /tmp/foo/lib dmisc.lo gdtoa.lo hd_init.lo smisc.lo sum.lo g_Qfmt.lo gethex.lo hexnan.lo strtodg.lo ulp.lo g__fmt.lo gmisc.lo misc.lo strtopQ.lo libgfortran_io.lo acoshq.lo fmodq.lo acosq.lo frexpq.lo rem_pio2q.lo asinhq.lo hypotq.lo remainderq.lo asinq.lo rintq.lo atan2q.lo isinfq.lo roundq.lo atanhq.lo isnanq.lo scalblnq.lo atanq.lo j0q.lo scalbnq.lo cbrtq.lo j1q.lo signbitq.lo ceilq.lo jnq.lo sincos_table.lo complex.lo ldexpq.lo sincosq.lo copysignq.lo lgammaq.lo sincosq_kernel.lo coshq.lo llroundq.lo sinhq.lo cosq.lo log10q.lo sinq.lo cosq_kernel.lo log1pq.lo sinq_kernel.lo erfq.lo logq.lo sqrtq.lo expm1q.lo lroundq.lo tanhq.lo expq.lo modfq.lo tanq.lo fabsq.lo nanq.lo tgammaq.lo finiteq.lo nextafterq.lo truncq.lo floorq.lo powq.lo -lm
libtool: link: gcc-4.6 -shared .libs/dmisc.o .libs/gdtoa.o .libs/hd_init.o .libs/smisc.o .libs/sum.o .libs/g_Qfmt.o .libs/gethex.o .libs/hexnan.o .libs/strtodg.o .libs/ulp.o .libs/g__fmt.o .libs/gmisc.o .libs/misc.o .libs/strtopQ.o .libs/libgfortran_io.o .libs/acoshq.o .libs/fmodq.o .libs/acosq.o .libs/frexpq.o .libs/rem_pio2q.o .libs/asinhq.o .libs/hypotq.o .libs/remainderq.o .libs/asinq.o .libs/rintq.o .libs/atan2q.o .libs/isinfq.o .libs/roundq.o .libs/atanhq.o .libs/isnanq.o .libs/scalblnq.o .libs/atanq.o .libs/j0q.o .libs/scalbnq.o .libs/cbrtq.o .libs/j1q.o .libs/signbitq.o .libs/ceilq.o .libs/jnq.o .libs/sincos_table.o .libs/complex.o .libs/ldexpq.o .libs/sincosq.o .libs/copysignq.o .libs/lgammaq.o .libs/sincosq_kernel.o .libs/coshq.o .libs/llroundq.o .libs/sinhq.o .libs/cosq.o .libs/log10q.o .libs/sinq.o .libs/cosq_kernel.o .libs/log1pq.o .libs/sinq_kernel.o .libs/erfq.o .libs/logq.o .libs/sqrtq.o .libs/expm1q.o .libs/lroundq.o .libs/tanhq.o .libs/expq.o .libs/modfq.o .libs/tanq.o .libs/fabsq.o .libs/nanq.o .libs/tgammaq.o .libs/finiteq.o .libs/nextafterq.o .libs/truncq.o .libs/floorq.o .libs/powq.o -o .libs/cygquad-0.dll -Wl,--enable-auto-image-base -Xlinker --out-implib -Xlinker .libs/libquad.dll.a
Creating library file: .libs/libquad.dll.a
.libs/cbrtq.o: In function `cbrtq':
/tmp/libquad/src/math/cbrtq.c:26: undefined reference to `_cbrtl'
.libs/sqrtq.o: In function `sqrtq':
/tmp/libquad/src/math/sqrtq.c:26: undefined reference to `_sqrtl'
collect2: ld returned 1 exit status
make[2]: *** [libquad.la] Error 1
make[2]: Leaving directory `/tmp/libquad/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/libquad'
make: *** [all] Error 2


This is all! :(

Ciao,
Angelo.


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