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build-cran-package.sh
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build-cran-package.sh
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#!/bin/sh
# [description]
# Prepare a source distribution of the R package
# to be submitted to CRAN.
#
# [usage]
# sh build-cran-package.sh
set -e
ORIG_WD=$(pwd)
TEMP_R_DIR=$(pwd)/lightgbm_r
if test -d ${TEMP_R_DIR}; then
rm -r ${TEMP_R_DIR}
fi
mkdir -p ${TEMP_R_DIR}
CURRENT_DATE=$(date +'%Y-%m-%d')
# R packages cannot have versions like 3.0.0rc1, but
# 3.0.0-1 is acceptable
LGB_VERSION=$(cat VERSION.txt | sed "s/rc/-/g")
# move relevant files
cp -R R-package/* ${TEMP_R_DIR}
cp -R include ${TEMP_R_DIR}/src/
cp -R src/* ${TEMP_R_DIR}/src/
cd ${TEMP_R_DIR}
# Remove files not needed for CRAN
echo "Removing files not needed for CRAN"
rm src/install.libs.R
rm -r src/cmake/
rm -r inst/
rm -r pkgdown/
rm cran-comments.md
rm AUTOCONF_UBUNTU_VERSION
rm recreate-configure.sh
# main.cpp is used to make the lightgbm CLI, unnecessary
# for the R package
rm src/main.cpp
# configure.ac and DESCRIPTION have placeholders for version
# and date so they don't have to be updated manually
sed -i.bak -e "s/~~VERSION~~/${LGB_VERSION}/" configure.ac
sed -i.bak -e "s/~~VERSION~~/${LGB_VERSION}/" DESCRIPTION
sed -i.bak -e "s/~~DATE~~/${CURRENT_DATE}/" DESCRIPTION
# Remove 'region', 'endregion', and 'warning' pragmas.
# This won't change the correctness of the code. CRAN does
# not allow you to use compiler flag '-Wno-unknown-pragmas' or
# pragmas that suppress warnings.
echo "Removing unknown pragmas in headers"
for file in $(find . -name '*.h' -o -name '*.hpp' -o -name '*.cpp'); do
sed \
-i.bak \
-e 's/^.*#pragma region.*$//' \
-e 's/^.*#pragma endregion.*$//' \
-e 's/^.*#pragma warning.*$//' \
"${file}"
done
find . -name '*.h.bak' -o -name '*.hpp.bak' -o -name '*.cpp.bak' -exec rm {} \;
# When building an R package with 'configure', it seems
# you're guaranteed to get a shared library called
# <packagename>.so/dll. The package source code expects
# 'lib_lightgbm.so', not 'lightgbm.so', to comply with the way
# this project has historically handled installation
echo "Changing lib_lightgbm to lightgbm"
for file in R/*.R; do
sed \
-i.bak \
-e 's/lib_lightgbm/lightgbm/' \
"${file}"
done
sed \
-i.bak \
-e 's/lib_lightgbm/lightgbm/' \
NAMESPACE
# 'processx' is listed as a 'Suggests' dependency in DESCRIPTION
# because it is used in install.libs.R, a file that is not
# included in the CRAN distribution of the package
sed \
-i.bak \
'/processx/d' \
DESCRIPTION
echo "Cleaning sed backup files"
rm R/*.R.bak
rm NAMESPACE.bak
cd ${ORIG_WD}
R CMD build \
--keep-empty-dirs \
lightgbm_r
echo "Done building R package"