* gnu/packages/parallel.scm (clog)[arguments]: Add "-DUSE_SYSTEM_LIBS=ON" to #:configure-flags. * gnu/packages/patches/clog-fix-shared-build.patch: Adjust patch.
* gnu/packages/parallel.scm (clog): New variable. * gnu/packages/patches/clog-fix-shared-build.patch: New file. * gnu/local.mk (dist_patch_DATA): Add it. Signed-off-by: Nicolas Goaziou <mail@nicolasgoaziou.fr>