Re: MXE-Octave build of fftw

[Michael Goffioul]

On Tue, Jun 25, 2013 at 5:08 PM, jdonoghue <address@hidden> wrote:

 

When trying to compile as native mingw, FFTW now fails to build:

 

libtool: compile:  gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I.. -I../simd -O3 -fomit-

frame-pointer -mtune=native -malign-double -fstrict-aliasing -fno-schedule-insns

-ffast-math -MT kalloc.lo -MD -MP -MF .deps/kalloc.Tpo -c kalloc.c  -DDLL_EXPOR

T -DPIC -o .libs/kalloc.o

kalloc.c: In function 'fftw_kernel_malloc':^M

kalloc.c:131:6: error: #error "Don't know how to malloc() aligned memory ... try

configuring --with-our-malloc"^M

make[4]: *** [kalloc.lo] Error 1

make[4]: Leaving directory `/home/jdonoghue/mxe-octave/tmp-fftw/fftw-3.3.2/kerne

l'

 

 

In addition (this has probally always been the case) I get a warning for unrecognized option  --enable-double:

 

cd '/home/jdonoghue/mxe-octave/tmp-fftw/fftw-3.3.2' && ./configure F77=gfortran

--enable-shared --disable-static --prefix='/home/jdonoghue/mxe-octave/usr/i686-

pc-mingw32' --enable-threads --enable-sse2 --enable-double && true

configure: WARNING: unrecognized options: --enable-double

 

 

Checking the configure.ac, there is –enable-long-double, --enable-float/--enable-single.

AFAIK, the only change I made recently, that could impact MinGW, is to use --enable-sse2. Is that enough to trigger the compilation error? (would make sense, as using SSE2 instructions requires properly aligned memory)

Michael.