void-packages/common/build-helper/numpy.sh

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#
# numpy - build-helper for packages that compile against python3-numpy
#
# This build-helper makes sure packages can find python3-numpy libraries and
# headers on the target architecture rather than the host, as well as making
# sure the gfortran cross compiler is properly identified.
# Even for cross compilation, numpy should be available on the host to ensure
# that the host interpreter doesn't complain about missing deps
if [[ $hostmakedepends != *"python3-numpy"* ]]; then
hostmakedepends+=" python3-numpy"
fi
if [ "$CROSS_BUILD" ]; then
if [[ $makedepends != *"python3-numpy"* ]]; then
makedepends+=" python3-numpy"
fi
# python3-setuptools finds numpy libs and headers on the host first;
# addding search paths up front allows the target to take priority
CFLAGS+=" -I${XBPS_CROSS_BASE}/${py3_sitelib}/numpy/core/include"
LDFLAGS+=" -L${XBPS_CROSS_BASE}/${py3_sitelib}/numpy/core/lib"
LDFLAGS+=" -L${XBPS_CROSS_BASE}/${py3_sitelib}/numpy/random/lib"
# distutils from python3-numpy looks to environment variables F77 and
# F90 rather than the XBPS-set FC
export F77="${FC}"
export F90="${FC}"
# When compiling and linking FORTRAN, distutils from python3-numpy
# refuses respect any linker name except "gfortran"; symlink to the
# cross-compiler to that the right linker and compiler will be used
if _gfortran=$(command -v "${FC}"); then
ln -sf "${_gfortran}" "${XBPS_WRAPPERDIR}/gfortran"
fi
unset _gfortran
fi