Compile issue with GRIB2 enabled under Ubuntu 18.04

I've an issue building the new version of GrADS (2.2.2) under Ubuntu 18.04 with GRIB2 enabled. I'm able to build correctly g2clib 1.6.0 (also tried with 1.6.2) and configure GrADS:

export PREFIX=/opt
export CFLAGS=-fPIC
export LDFLAGS=-L${PREFIX}/lib
export CPPFLAGS=-I${PREFIX}/include
export SUPPLIBS=${PREFIX}
PKG_CONFIG=/usr/bin/pkg-config ./configure \
  --prefix=${PREFIX} \
  --with-hdf5-include=/usr/include/hdf5/serial \
  --with-hdf5-libdir=/usr/lib/x86_64-linux-gnu/hdf5/serial \
;

but when i make this error show up:

make
...
gcc -DHAVE_CONFIG_H -I.  -I. -I/opt/include    -I/usr/include/hdf5/serial -I/usr/include/geotiff       -I/opt/include   -fPIC -rdynamic -c gabufrtbl.c
gcc   -fPIC -rdynamic  -L/opt/lib  -o grads grads.o gxsubs.o gxmeta.o gxchpl.o gxcntr.o gxstrm.o gxdb.o gxwmap.o gxshad.o gxshad2.o gaexpr.o gafunc.o gautil.o gagx.o gscrpt.o gamach.o gatxt.o galloc.o gaddes.o gacfg.o gaio.o gauser.o gasdf.o bufrstn.o gabufr.o gabufrtbl.o   -L/opt/lib      -lreadline -lncurses -lgrib2c -ljasper -lpng15 -lz -lmfhdf -ldf -ljpeg -lz -ludunits2 -lhdf5 -ljpeg -lz  -ludunits2 -lnetcdf -lgeotiff -ltiff  -lshp   -ldl  -lm  
/opt/lib/libgrib2c.a(g2_getfld.o): In function `g2_getfld':
/build/g2clib/g2_getfld.c:421: undefined reference to `g2_unpack4'
/build/g2clib/g2_getfld.c:438: undefined reference to `g2_unpack5'
/build/g2clib/g2_getfld.c:364: undefined reference to `g2_unpack1'
/opt/lib/libgrib2c.a(g2_unpack7.o): In function `g2_unpack7':
/build/g2clib/g2_unpack7.c:120: undefined reference to `rdieee'
/build/g2clib/g2_unpack7.c:134: undefined reference to `jpcunpack'
/opt/lib/libgrib2c.a(simunpack.o): In function `simunpack':
/build/g2clib/simunpack.c:48: undefined reference to `rdieee'
/opt/lib/libgrib2c.a(specunpack.o): In function `specunpack':
/build/g2clib/specunpack.c:55: undefined reference to `rdieee'
/build/g2clib/specunpack.c:71: undefined reference to `rdieee'
/opt/lib/libgrib2c.a(pngunpack.o): In function `pngunpack':
/build/g2clib/pngunpack.c:49: undefined reference to `rdieee'
/opt/lib/libgrib2c.a(comunpack.o): In function `comunpack':
/build/g2clib/comunpack.c:61: undefined reference to `rdieee'
/opt/lib/libgrib2c.a(comunpack.o):/build/g2clib/comunpack.c:92: more undefined references to `rdieee' follow
collect2: error: ld returned 1 exit status
Makefile:771: recipe for target 'grads' failed
make[2]: *** [grads] Error 1
make[2]: Leaving directory '/build/grads/src'
Makefile:614: recipe for target 'all' failed
make[1]: *** [all] Error 2
make[1]: Leaving directory '/build/grads/src'
Makefile:462: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1

If I make without GRIB2 it finish correctly with all enabled (less GUI and OpenDAP).

j-m-adams / GrADS

Compile issue with GRIB2 enabled under Ubuntu 18.04 #6