=> Bootstrap dependency digest>=20010302: found digest-20190127
=> Checksum SHA1 OK for algae-4.3.6.tar.gz
=> Checksum RMD160 OK for algae-4.3.6.tar.gz
=> Checksum SHA512 OK for algae-4.3.6.tar.gz
===> Installing dependencies for algae-4.3.6nb2
=> Tool dependency distcc-[0-9]*: found distcc-3.3
=> Build dependency cwrappers>=20150314: found cwrappers-20180325
=> Full dependency gnuplot>=3.5: found gnuplot-5.4.1
=> Full dependency readline>=6.0: found readline-8.0
=> Full dependency gcc7>=7.0: found gcc7-7.5.0nb3
===> Skipping vulnerability checks.
WARNING: No /usr/pkg/pkgdb/pkg-vulnerabilities file found.
WARNING: To fix run: `/usr/sbin/pkg_admin -K /usr/pkg/pkgdb fetch-pkg-vulnerabilities'.
===> Overriding tools for algae-4.3.6nb2
===> Extracting for algae-4.3.6nb2
===> Patching for algae-4.3.6nb2
=> Applying pkgsrc patches for algae-4.3.6nb2
===> Creating toolchain wrappers for algae-4.3.6nb2
===> Configuring for algae-4.3.6nb2
=> Modifying GNU configure scripts to avoid --recheck
=> Replacing config-guess with pkgsrc versions
=> Replacing config-sub with pkgsrc versions
=> Replacing install-sh with pkgsrc version
checking for sparc64--netbsd-gcc... gcc
checking for C compiler default output... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ANSI C... none needed
checking for sparc64--netbsd-g77... gfortran
checking whether we are using the GNU Fortran 77 compiler... yes
checking whether gfortran accepts -g... yes
checking for support of ANSI prototypes... yes
checking whether make sets $(MAKE)... yes
checking for gawk... /usr/bin/awk
checking for bison... no
checking for byacc... no
checking for flex... flex
checking for yywrap in -lfl... yes
checking lex output file root... lex.yy
checking whether yytext is a pointer... yes
checking for a BSD-compatible install... /usr/bin/install -c -o pbulk -g users
checking for sparc64--netbsd-ranlib... no
checking for ranlib... ranlib
checking for m4... m4
checking for f2c... no
checking for efl... no
checking for ratfor... no
checking for ls... /bin/ls
checking for tr... /usr/bin/tr
checking for sed... /usr/bin/sed
checking for info... /usr/bin/info
checking for lynx... no
checking for mozilla... no
checking for netscape... no
checking for mosaic... no
checking for gnuplot... /usr/pkg/bin/gnuplot
checking for xterm... (cached) xterm
checking for broken linker... ok
checking build system type... sparc64--netbsd
checking host system type... sparc64--netbsd
checking how to run the C preprocessor...  gcc -E
checking for egrep... grep -E
checking for ANSI C header files... yes
checking for working Fortran compiler... yes
checking for cooperative make and Fortran... yes
checking whether we can link Fortran... no
configure: error: unable to link Fortran
*** Error code 1

Stop.
make[1]: stopped in /usr/pkgsrc/math/algae
*** Error code 1

Stop.
make: stopped in /usr/pkgsrc/math/algae