perl - How can I tell a CPAN installation of PDL to use my FFTW path? -


i need install perl pdl library via cpan non-root user.

cpan non-root works question: how can use cpan non-root user?

now, pdl depends on fftw library. evidently, sysadmin has 32-bit version installed when require 64-bit machine.

i base on following error message during cpan install:

gcc  -shared -o2 -g -pipe -wall -wp,-d_fortify_source=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic fftw.o  -o ../../blib/arch/auto/pdl/fftw/fftw.so   \        -lm -l/lib -l/usr/lib -l/usr/local/lib -l/usr/local/lib64 -l/lib64 -l/usr/lib64 -ldfftw -ldrfftw     \  /usr/bin/ld: skipping incompatible /usr/local/lib/libdfftw.a when searching -ldfftw /usr/bin/ld: skipping incompatible /usr/local/lib/libdfftw.a when searching -ldfftw /usr/bin/ld: cannot find -ldfftw

now have installed fftw in $home/lib, indeed libdfftw.a.

the problem can't gcc compilation instance use locally installed copy.

i have tried following:

  1. setting ld_library_path in .bash_profile, , yes, exporting -- no dice.
  2. following how can set library , include paths makefile.pl single installation?, set o conf makepl_arg in cpan to: libs=-l/homedir/lib inc=-i/homedir/include -- still no dice
  3. i did same step 2 o conf mbuild_arg --- again, no dice.

none of these attempts had effect on gcc line above; there no additional paths specified -l flags.

what else can try in cpan compilation command reference copy of fftw?

update 1

i should add before make changes, makepl_arg is:

makepl_arg [installdirs=site]

hence, setting makepl_arg to:

makepl_arg [installdirs=site libs=-l/homedir/lib inc=-i/homedir/include]

i setting these configurations without doing o conf commit permit experimentation. should commiting these changes?

update 2

i see -l flags in above gcc line coming makefile, seems made makemaker presume reading file 'makefile.pl'

the solution examine .cpan/build/pdl-*/ directory.

in install file indicates perldl.conf file can modified indicate paths fftw libs , fftw include directories.

the process follows , can done after failed attempt @ installing pdl:

  1. copy .cpan/build/pdl-*/perldl.conf file ~/.perldl.conf - notice . being added before filename - pdl file when installing, under cpan
  2. modify fftw__libs , fftw_inc in ~/.perldl.conf point appropriate locations.
  3. attempt install of pdl again cpan.

a bit confusing pdl not adhere makepl_arg cpan configuration.


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