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Section

Column

Panel

borderColor	white
bgColor	white
titleBGColor	white
borderStyle	dotted
title	If using 'cmake' command

Code Block

title	gcc/gfortran compilers

export CC=gcc
export FC=gfortran
cmake .... -DCMAKE_C_FLAGS="-g -O2" -DCMAKE_Fortran_FLAGS="-g -O2"

Code Block

title	Intel compiler:

export CC=icc
export FC=ifort
cmake ... -DCMAKE_C_FLAGS="-g -O1 -fp-model precise"   \
          -DCMAKE_Fortran_FLAGS="-g -O1 -fp-model precise"

Code Block

language	bash
title	Cray compiler (cce)

export CC=cc
export FC=ftn
cmake ... -DCMAKE_C_FLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"  \
          -DCMAKE_Fortran_FLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"

Code Block

title	IBM compiler:

export CC=xlc_r
export FC=xlf90_r
cmake ... -DCMAKE_C_FLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"  \
          -DCMAKE_Fortran_FLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"

Column

Panel

borderColor	white
bgColor	white
titleBGColor	white
borderStyle	dotted
title	If using 'configure' command

Code Block

title	gcc/gfortran compilers

export CC=gcc
export FC=gfortran
export CCFLAGS="-g -O2"
export FCFLAGS="-g -O2"
./configure ...

Code Block

title	Intel compiler:

export CC=icc
export FC=ifort
export CFLAGS="-g -O1 -fp-model precise"
export FCFLAGS="-g -O1 -fp-model precise"
./configure ...

Code Block

language	bash
title	Cray compiler (cce)

export CC=cc
export FC=ftn
export CFLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"
export FCFLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"
./configure ...

Code Block

title	IBM compiler:

export CC=xlc_r
export FC=xlf90_r
export CFLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"
export FCFLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"
./configure ...

Info

title	Cray compiler

Note

title	Intel compiler

We currently recommend not using a higher optimization level than -O1 with the Intel compiler. Failures have been seen with grib_api and the Intel compiler when compiled with -O2.

Some versions of the Intel compiler (v14.0.x) can produce an error "unknown option -soname" when using 'configure. If this occurs try using "

Note

title	IBM compiler

For the IBM xlc compiler we recommend disabling the creation of 'shared libraries' which is known to cause problems with some versions of grib_api.

In this example, note the use of the '_r' form of the IBM compiler to ensure grib_api is compiled 'thread-safe'.

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