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Note (probably harmless): No library found for -lfftw3
Writing Makefile for Math::FFTW
cp lib/Math/FFTW.pm blib/lib/Math/FFTW.pm
/home/cpanrun/ia64/build/5.8.2/bin/perl /home/cpanrun/ia64/build/5.8.2/lib/5.8.2/ExtUtils/xsubpp  -typemap /home/cpanrun/ia64/build/5.8.2/lib/5.8.2/ExtUtils/typemap  FFTW.xs > FFTW.xsc && mv FFTW.xsc FFTW.c
Please specify prototyping behavior for FFTW.xs (see perlxs manual)
cc -c  -I. -D_POSIX_C_SOURCE=199506L -D_REENTRANT -Ae -D_HPUX_SOURCE -Wl,+vnocompatwarnings -DNO_HASH_SEED -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -fast +DSitanium2 +Ofltacc=strict   -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" +Z "-I/home/cpanrun/ia64/build/5.8.2/lib/5.8.2/IA64.ARCHREV_0-thread-multi/CORE"   FFTW.c
Error 112: "FFTW.xs", line 4 # Include file <fftw3.h> not found.
    #include <fftw3.h>
             ^^^^^^^^^
Error 172: "FFTW.xs", line 14 # Undeclared variable 'fftw_complex'.
            fftw_complex *out;
            ^^^^^^^^^^^^      
Error 419: "FFTW.xs", line 17 # 'fftw_plan' is used as a type, but has not been defined as a type.
            fftw_plan p;
            ^^^^^^^^^   
Error 419: "FFTW.xs", line 31 # 'fftw_complex' is used as a type, but has not been defined as a type.
            out = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * Nc);
                   ^^^^^^^^^^^^                                          
Error 172: "FFTW.xs", line 31 # Undeclared variable 'out'.
            out = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * Nc);
            ^^^                                                          
Error 172: "FFTW.xs", line 35 # Undeclared variable 'FFTW_ESTIMATE'.
            p = fftw_plan_dft_r2c_1d(N, in, out, FFTW_ESTIMATE);
                                                 ^^^^^^^^^^^^^  
Error 172: "FFTW.xs", line 44 # Undeclared variable 'out'.
                av_push(results, newSVnv(out[i][0]));
                ^^^^^^^                              
Error 172: "FFTW.xs", line 45 # Undeclared variable 'out'.
                av_push(results, newSVnv(out[i][1]));
                ^^^^^^^                              
Error 172: "FFTW.xs", line 48 # Undeclared variable 'out'.
            fftw_free(out);
                      ^^^  
Error 172: "FFTW.xs", line 60 # Undeclared variable 'fftw_complex'.
            fftw_complex *in;
            ^^^^^^^^^^^^     
Error 419: "FFTW.xs", line 64 # 'fftw_plan' is used as a type, but has not been defined as a type.
            fftw_plan p;
            ^^^^^^^^^   
Error 419: "FFTW.xs", line 79 # 'fftw_complex' is used as a type, but has not been defined as a type.
            in = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * Nc);
                  ^^^^^^^^^^^^                                          
Error 699: "FFTW.xs", line 79 # Error limit reached; halting compilation.
            in = (fftw_complex*) fftw_malloc(sizeof(fftw_complex) * Nc);
                  ^^^^^^^^^^^^                                          
make: *** [FFTW.o] Error 2