wgrib2 does not respect MacPorts compiler choice

[barracuda156]

The port uses OpenMP by default, which should ensure avoiding Xcode gcc, but it does not: the build picks gcc-4.2, which unsurprisingly fails:

/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Check_pdt_size.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Checksum.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Cluster.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc  CodeTable.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Code_Values.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Config.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Cress_lola.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Csv.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Csv_long.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   CubeFace2global.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Cyclic.c
/usr/bin/gcc-4.2 -c -DGFORTRAN -I/opt/local/lib/libaec/include -I/opt/local/libexec/jasper2/include -DJAS_VERSION_MAJOR=2 -I/opt/local/include -I/opt/local/include/LegacySupport -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/include -Wall -Wmissing-prototypes -Wold-style-definition -Werror=format-security -ffast-math -O3 -DGFORTRAN -fopenmp -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/g2clib-1.4.0  -Os -I/opt/local/include/LegacySupport -arch ppc   Data.c
Data.c: In function ‘f_stats’:
Data.c:54: error: expected ‘+’, ‘*’, ‘-’, ‘&’, ‘^’, ‘|’, ‘&&’, or ‘||’ before ‘min’
Data.c:54: error: expected ‘+’, ‘*’, ‘-’, ‘&’, ‘^’, ‘|’, ‘&&’, or ‘||’ before ‘max’
Data.c:55: warning: iteration variable ‘i’ is unsigned
make[1]: *** [Data.o] Error 1
make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_science_wgrib2/wgrib2/work/grib2/wgrib2'
make: *** [wgrib2/wgrib2] Error 2