config

################################################################################
# This file is sourced by the build scripts to configure the build environment
# for the current machine. You can use this file to set machine-specific
# environment variables.
################################################################################

# Configure compiler flags for the current machine
# By default, we simply build with the highest instruction set available on the current machine
# if you want to use a different instruction set, you can set this in the CXX_FLAGS, CUDA_FLAGS, C_FLAGS,
# e.g.
#   export C_FLAGS="-march=core-avx2 -fPIC"
#   export CXX_FLAGS="-march=core-avx2 -fPIC"
#   export CUDA_FLAGS="-arch=sm_35"
export C_FLAGS="-march=native -fPIC -O3 -ffast-math -fno-finite-math-only"
export CXX_FLAGS="${C_FLAGS}"
export CUDA_FLAGS="-arch=native --use_fast_math"

# Configure linker flags for the current machine. By default, we use the gold linker
export EXE_LINKER_FLAGS="-fuse-ld=gold"

# Also, the name of the python executable may vary for your system. You can set this here
export pythoncmd=python3

# Set additional cmake flags for deal.II.
# For a local build, we want to allow platform introspection.
# By default, we disable LTO for deal.II to speed up the build, but you can enable it here
export DEAL_II_CMAKE="DDEAL_II_ALLOW_PLATFORM_INTROSPECTION=ON \
  -DDEAL_II_USE_LTO=OFF"

################################################################################
# Library-specific configuration
################################################################################

# check if dnsdomainname is thphys.uni-heidelberg.de, if yes, set some custom flags for deal.II
# first check if dnsdomainname is available
if command -v dnsdomainname &>/dev/null; then
  if [[ "$(dnsdomainname)" = "thphys.uni-heidelberg.de" ]] || [[ "$(dnsdomainname)" = "itp.uni-heidelberg.de" ]]; then
    export DEAL_II_CMAKE="
                      -DDEAL_II_ALLOW_PLATFORM_INTROSPECTION=ON \
                      -DLAPACK_LIBRARIES='/usr/lib/x86_64-linux-gnu/libopenblas.so' \
                      -DBLAS_LIBRARIES='/usr/lib/x86_64-linux-gnu/libopenblas.so'"
    echo "Using specific flags for thphys.uni-heidelberg.de:"
    echo ${DEAL_II_CMAKE}
    echo
  fi
fi