Identifying if --disable-fft has been used

[Kate Minola]

Torbjorn,

You suggested using nm and looking for fft to determine if
--disable-fft has been used to build gmp.

I guess I don't know what I am looking for.  Below is what
I am seeing from a build of gmp-4.1.2 with --disable-shared
--disable-fft and a build of gmp-4.1.2 with just
--disable-shared for both a pentium4-pc-linux-gnu and a
ultrasparc2-sun-solaris2.8.  What is common that indicates
that --disable-fft has been used?

And on a powerpc64-ibm-aix5.2.0.0, 'nm libgmp.a' gives no output!

Kate Minola
Engineering Department
University of Maryland, College Park

***
pentium4-pc-linux-gnu
***

% cd
/home/kate/gmp/gmp-4.1.2/x86-Linux/lib
% nm libgmp.a | grep fft
         U __gmpn_mul_fft_full
mul_fft.o:
00000000 T __gmpn_fft_best_k
00000051 T __gmpn_fft_next_size
00001bbc T __gmpn_mul_fft
00001fd9 T __gmpn_mul_fft_full
000004b9 t mpn_fft_add_modF
00001100 t mpn_fft_div_2exp_modF
00000732 t mpn_fft_fft
00000f1b t mpn_fft_fftinv
00000519 t mpn_fft_fft_sqr
000000b2 t mpn_fft_initl
0000011d t mpn_fft_mul_2exp_modF
00000b2b t mpn_fft_mul_modF_K
00000aae t mpn_fft_norm
00001153 t mpn_fft_norm_modF
00000000 r mpn_fft_table
0000133e t mpn_mul_fft_internal
         U __gmpn_mul_fft_full
% 


% cd lib
/home/kate/gmp/gmp-4.1.2/x86-Linux-nofft/lib
libgmp.a  libgmp.la*
% nm libgmp.a | grep fft
mul_fft.o:
00000000 T __gmpn_fft_best_k
00000051 T __gmpn_fft_next_size
00001bbc T __gmpn_mul_fft
00001fd9 T __gmpn_mul_fft_full
000004b9 t mpn_fft_add_modF
00001100 t mpn_fft_div_2exp_modF
00000732 t mpn_fft_fft
00000f1b t mpn_fft_fftinv
00000519 t mpn_fft_fft_sqr
000000b2 t mpn_fft_initl
0000011d t mpn_fft_mul_2exp_modF
00000b2b t mpn_fft_mul_modF_K
00000aae t mpn_fft_norm
00001153 t mpn_fft_norm_modF
00000000 r mpn_fft_table
0000133e t mpn_mul_fft_internal
% 


***
ultrasparc2-sun-solaris2.8
***

a% cd lib
/usr/local/gmp-4.1.2/sparc-SunOS-5.8/lib
libgmp.a    libgmp.la*
% nm libgmp.a | grep fft
[11]    |             0|           0|NOTY |GLOB |0    |UNDEF  |__gmpn_mul_fft_full
libgmp.a[mul_fft.o]:
[27]    |             0|         212|FUNC |GLOB |0    |5      |__gmpn_fft_best_k
[26]    |           212|          96|FUNC |GLOB |0    |5      |__gmpn_fft_next_size
[30]    |          7088|        1180|FUNC |GLOB |0    |5      |__gmpn_mul_fft
[25]    |          8268|         204|FUNC |GLOB |0    |5      |__gmpn_mul_fft_full
[23]    |          1568|         100|FUNC |LOCL |0    |5      |mpn_fft_add_modF
[6]     |          4556|          68|FUNC |LOCL |0    |5      |mpn_fft_div_2exp_modF
[15]    |          2144|         760|FUNC |LOCL |0    |5      |mpn_fft_fft
[20]    |          1668|         476|FUNC |LOCL |0    |5      |mpn_fft_fft_sqr
[11]    |          4112|         444|FUNC |LOCL |0    |5      |mpn_fft_fftinv
[19]    |           308|         156|FUNC |LOCL |0    |5      |mpn_fft_initl
[8]     |           464|        1104|FUNC |LOCL |0    |5      |mpn_fft_mul_2exp_modF
[4]     |          3048|        1064|FUNC |LOCL |0    |5      |mpn_fft_mul_modF_K
[3]     |          2904|         144|FUNC |LOCL |0    |5      |mpn_fft_norm
[21]    |          4624|         520|FUNC |LOCL |0    |5      |mpn_fft_norm_modF
[22]    |             0|         256|OBJT |LOCL |0    |6      |mpn_fft_table
[14]    |          5144|        1944|FUNC |LOCL |0    |5      |mpn_mul_fft_internal
[1]     |             0|           0|FILE |LOCL |0    |ABS    |mul_fft.c
[15]    |             0|           0|NOTY |GLOB |0    |UNDEF  |__gmpn_mul_fft_full
% 

% cd lib
/usr/local/gmp-4.1.2-nofft/sparc-SunOS-5.8/lib
libgmp.a    libgmp.la*
% nm libgmp.a | grep fft
libgmp.a[mul_fft.o]:
[27]    |             0|         212|FUNC |GLOB |0    |5      |__gmpn_fft_best_k
[26]    |           212|          96|FUNC |GLOB |0    |5      |__gmpn_fft_next_size
[30]    |          7088|        1180|FUNC |GLOB |0    |5      |__gmpn_mul_fft
[25]    |          8268|         204|FUNC |GLOB |0    |5      |__gmpn_mul_fft_full
[23]    |          1568|         100|FUNC |LOCL |0    |5      |mpn_fft_add_modF
[6]     |          4556|          68|FUNC |LOCL |0    |5      |mpn_fft_div_2exp_modF
[15]    |          2144|         760|FUNC |LOCL |0    |5      |mpn_fft_fft
[20]    |          1668|         476|FUNC |LOCL |0    |5      |mpn_fft_fft_sqr
[11]    |          4112|         444|FUNC |LOCL |0    |5      |mpn_fft_fftinv
[19]    |           308|         156|FUNC |LOCL |0    |5      |mpn_fft_initl
[8]     |           464|        1104|FUNC |LOCL |0    |5      |mpn_fft_mul_2exp_modF
[4]     |          3048|        1064|FUNC |LOCL |0    |5      |mpn_fft_mul_modF_K
[3]     |          2904|         144|FUNC |LOCL |0    |5      |mpn_fft_norm
[21]    |          4624|         520|FUNC |LOCL |0    |5      |mpn_fft_norm_modF
[22]    |             0|         256|OBJT |LOCL |0    |6      |mpn_fft_table
[14]    |          5144|        1944|FUNC |LOCL |0    |5      |mpn_mul_fft_internal
[1]     |             0|           0|FILE |LOCL |0    |ABS    |mul_fft.c
% 

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