On Wed, Jun 13, 2012 at 10:05 AM, David Brownlee <abs%netbsd.org@localhost> wrote: > On 13 June 2012 06:31, OBATA Akio <obache%netbsd.org@localhost> wrote: >> something like followings? >> >> .if ${OPSYS} == "NetBSD" && exists(/usr/include/execinfo.h) >> LIBS+= -lexecinfo >> .endif > > "works for me".... Yes, better, thank you.