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Compiler options if using cmake

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With cmake, it is better to use the cmake variables to define the compilers rather than rely on environment variables FC and CC.

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titlegcc/gfortran compilers
cmake .... -DCMAKE_C_COMPILER=gcc -DCMAKE_Fortran_COMPILER=gfortran -DCMAKE_C_FLAGS="-g -O2" -DCMAKE_Fortran_FLAGS="-g -O2"


Code Block
titleIntel compiler:
cmake ... -DCMAKE_C_COMPILER=icc -DCMAKE_Fortran_COMPILER=ifort -DCMAKE_C_FLAGS="-g -O1 -fp-model precise"   \
          -DCMAKE_Fortran_FLAGS="-g -O1 -fp-model precise"


Code Block
languagebash
titleCray compiler (cce)
cmake ... -DCMAKE_C_COMPILER=cc -DCMAKE_Fortran_COMPILER=ftn -DCMAKE_C_FLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"  \
          -DCMAKE_Fortran_FLAGS="-O1 -G2 -hflex_mp=conservative -hadd_paren -hfp1"


Code Block
titleIBM compiler:
cmake ... -DCMAKE_C_COMPILER=xlc_r -DCMAKE_Fortran_COMPILER=xlf90_r -DCMAKE_C_FLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"  \
          -DCMAKE_Fortran_FLAGS="-g -O2 -qstrict -qarch=auto -qtune=auto"




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Compiler options if using configure

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Code Block
titlegcc/gfortran compilers
export CC=gcc
export FC=gfortran
export CCFLAGS="-g -O2"
export FCFLAGS="-g -O2"
./configure ...


Code Block
titleIntel compiler:
export CC=icc
export FC=ifort
export CFLAGS="-g -O1 -fp-model precise"
export FCFLAGS="-g -O1 -fp-model precise"
./configure ...


Code Block
languagebash
titleCray 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
titleIBM 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 ..



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