mips64 softfloat or hardfloat?

I recently tried again to build packages on my Lemote YeeLoong
(evbmips-mips64el), but was thwarted when the first dependency
("cwrappers") failed with:

[...]
===> Building for cwrappers-20170112
--- .gdbinit ---
--- alloc.o ---
--- .gdbinit ---
rm -f .gdbinit
touch .gdbinit
--- alloc.o ---
#   compile  cwrappers-20170112/alloc.o
gcc -O2 -fPIE  -msoft-float    -std=gnu99    -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare  -Wsystem-headers   -Wno-traditional   -Wa,--fatal-warnings  -Wreturn-type -Wswitch -Wshadow -Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -Wno-sign-compare -Wsign-compare -Wformat=2  -Wno-format-zero-length  -Werror  -Wa,--fatal-warnings -DHAVE_NBCOMPAT_H=1 -I/d0/build/pkgsrc/pkgtools/cwrappers/work/libnbcompat  -c    alloc.c
--- cleanup-cc.o ---
#   compile  cwrappers-20170112/cleanup-cc.o
gcc -O2 -fPIE  -msoft-float    -std=gnu99    -Wall -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-sign-compare  -Wsystem-headers   -Wno-traditional   -Wa,--fatal-warnings  -Wreturn-type -Wswitch -Wshadow -Wcast-qual -Wwrite-strings -Wextra -Wno-unused-parameter -Wno-sign-compare -Wsign-compare -Wformat=2  -Wno-format-zero-length  -Werror  -Wa,--fatal-warnings -DHAVE_NBCOMPAT_H=1 -I/d0/build/pkgsrc/pkgtools/cwrappers/work/libnbcompat  -c    cleanup-cc.c
--- alloc.o ---
/tmp/ccTB8LJ8.s: Assembler messages:
/tmp/ccTB8LJ8.s: Warning: .gnu_attribute 4,3 requires `softfloat'
/tmp/ccTB8LJ8.s: Error: 1 warning, treating warnings as errors
*** [alloc.o] Error code 1

make: stopped in /d0/build/pkgsrc/pkgtools/cwrappers/work/cwrappers-20170112
--- cleanup-cc.o ---
/tmp/cceFha2y.s: Assembler messages:
/tmp/cceFha2y.s: Warning: .gnu_attribute 4,3 requires `softfloat'
/tmp/cceFha2y.s: Error: 1 warning, treating warnings as errors
*** [cleanup-cc.o] Error code 1

make: stopped in /d0/build/pkgsrc/pkgtools/cwrappers/work/cwrappers-20170112
2 errors

make: stopped in /d0/build/pkgsrc/pkgtools/cwrappers/work/cwrappers-20170112
*** Error code 2

Stop.
make[1]: stopped in /x/pkgsrc/pkgtools/cwrappers
*** Error code 1

Stop.
make: stopped in /x/pkgsrc/pkgtools/cwrappers


The system is:

$ uname -a
NetBSD chalk.technoskunk.fur 7.99.67 NetBSD 7.99.67 (YEELOONG) #44: Mon Apr  3 08:19:03 CDT 2017  [email protected]:/r1/build/current/obj/mips64el/sys/arch/evbmips/compile/YEELOONG evbmips


Clues?

Thanks.

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