Bug 637550 – media-sound/ardour-4.7-r2 miss dependency on libfftw3f_threads.so

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description augustin 2017-11-15 06:35:52 UTC]

Problem encountered during upgrade from media-sound/ardour-4.7 to media-sound/ardour-4.7-r2

# emerge -1a ardour 
results in link error:
ERROR: media-sound/ardour-4.7-r2::gentoo failed (compile phase):
/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/../../../../x86_64-pc-linux-gnu/bin/ld: cannot find -lfftw3f_threads

I had:

 * Found these USE flags for media-sound/ardour-4.7-r2:
 U I
 - - cpu_flags_x86_3dnow : Use the 3DNow! instruction set
 + + cpu_flags_x86_mmx   : Use the MMX instruction set
 + + cpu_flags_x86_sse   : Use the SSE instruction set
 - - doc                 : Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
 + + jack                : Add support for the JACK Audio Connection Kit
 - - lv2                 : Add support for Ladspa V2

and also:

 * Found these USE flags for sci-libs/fftw-3.3.6_p2:
 U I
 - - abi_x86_32         : 32-bit (x86) libraries
 - - cpu_flags_x86_avx  : Adds support for Advanced Vector Extensions instructions
 - - cpu_flags_x86_avx2 : Adds support for Advanced Vector Extensions 2 instructions
 - - cpu_flags_x86_fma3 : Use the Fused Multiply Add 3 instruction set ([fma] in cpuinfo)
 - - cpu_flags_x86_fma4 : Use the Fused Multiply Add 4 instruction set
 + + cpu_flags_x86_sse  : Use the SSE instruction set
 + + cpu_flags_x86_sse2 : Use the SSE2 instruction set
 - - doc                : Add extra documentation (API, Javadoc, etc). It is recommended to enable per package instead of globally
 + + fortran            : Add support for fortran
 - - mpi                : Add MPI (Message Passing Interface) layer to the apps that support it
 + + openmp             : Build support for the OpenMP (support parallel computing), requires >=sys-devel/gcc-4.2 built with USE="openmp"
 - - quad               : Build quadruple precision lib
 - - static-libs        : Build static versions of dynamic libraries as well
 - - test               : Workaround to pull in packages needed to run with FEATURES=test. Portage-2.1.2 handles this internally, so don't set it in make.conf/package.use anymore
 - - threads            : Add threads support for various packages. Usually pthreads


I manually added +threads on sci-libs/fftw, re-emerged it, and only then could I sucessfully emerge ardour.

I am use the fftw USE flag dependency can be (conditionally???) added to the ardour ebuild.

[Comment 1 augustin 2017-11-15 06:49:05 UTC]

I see that the latest ardour ebuild (ardour-5.10.ebuild) has:

RDEPEND="
sci-libs/fftw:3.0[threads]
..."

while ardour-4.7-r2 only has:

RDEPEND="
sci-libs/fftw:3.0 
..."

so this can be considered fixed in the latest release.

[Comment 2 Andreas Schürch 2017-11-29 15:29:33 UTC]

Thanks Augustin!
This is now also fixed in ardour-4.7-r2.

Is there a reason why you are not using ardour-5?