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# Contributor: Nirosan <pnirosan@gmail.com>
# Contributor: Jakub Jirutka <jakub@jirutka.cz>
# Maintainer: Jakub Jirutka <jakub@jirutka.cz>
pkgname=R
pkgver=3.5.0
pkgrel=1
pkgdesc="Language and environment for statistical computing"
url="https://www.r-project.org"
arch="all"
license="GPL-2.0 GPL-3 LGPL-2.1"
depends="$pkgname-mathlib"
depends_dev="gcc gfortran icu-dev libjpeg-turbo libpng-dev make openblas-dev>=0.3.0
	pcre-dev>=8.10 readline-dev xz-dev zlib-dev bzip2-dev curl-dev>=7.28
	"
makedepends="$depends_dev cairo-dev libxmu-dev openjdk8-jre-base pango-dev
	perl tiff-dev tk-dev
	"
install="$pkgname.post-install"
subpackages="$pkgname-mathlib $pkgname-dev $pkgname-doc"
source="https://cran.r-project.org/src/base/R-${pkgver%%.*}/$pkgname-$pkgver.tar.gz"
builddir="$srcdir/$pkgname-$pkgver"

_rhome="usr/lib/R"
ldpath="/$_rhome/lib"

build() {
	cd "$builddir"

	# CXXFLAGS is propagated to /etc/R/Makeconf that is read when building
	# additional R modules. -D__MUSL__ is needed for some modules like Rcpp.
	# htps://github.com/RcppCore/Rcpp/issues/448
	CXXFLAGS="$CXXFLAGS -D__MUSL__" ./configure \
		--prefix=/usr \
		--sysconfdir=/etc/R \
		--localstatedir=/var \
		--mandir=/usr/share/man \
		--libdir=/usr/lib \
		rdocdir=/usr/share/doc/R \
		rincludedir=/usr/include/R \
		rsharedir=/usr/share/R \
		--disable-nls \
		--enable-R-shlib \
		--enable-java \
		--without-recommended-packages \
		--with-blas=openblas \
		--with-cairo \
		--with-ICU \
		--with-jpeglib \
		--with-lapack \
		--with-libpng \
		--with-libtiff \
		--with-tcltk \
		--with-x

	make -j1
	make -j1 -C src/nmath/standalone
}

# TODO: Run provided test suite.
check() {
	cd "$builddir"

	./bin/R --version
	./bin/R --slave --vanilla -e 'print("Hello, world!")'
}

package() {
	local destdir="$pkgdir/$_rhome"

	cd "$builddir"

	make DESTDIR="$pkgdir" install

	# Install libRmath.so.
	cd src/nmath/standalone
	make DESTDIR="$pkgdir" install
	cd -

	# Fixup R wrapper script (taken from Arch).
	rm "$destdir"/bin/R
	ln -sf /usr/bin/R "$destdir"/bin/R

	# Remove some useless files (COPYING is duplicated, it will be
	# in -doc, don't worry).
	rm "$destdir"/COPYING "$destdir"/SVN-REVISION

	mkdir -p "$pkgdir"/etc/R

	# R apparently ignores --sysconfdir, so we must manually move configs
	# to /etc/R and make symlinks.
	cd "$destdir"/etc
	local f; for f in *; do
		mv "$f" "$pkgdir"/etc/R/ && ln -sf /etc/R/$f $f
	done
	cd -
}

mathlib() {
	pkgdesc="Standalone math library from the R project"

	mkdir -p "$subpkgdir"/usr/lib
	mv "$pkgdir"/usr/lib/libRmath.so* "$subpkgdir"/usr/lib
}

sha512sums="c2703e892eb6f12ec7b536540b823d4ef011dddcbdca06c12d438bc1f07debae9dbd0f72abb6f0d4c577a3c74b155452ef527489cf023ed892109dd86c23bc37  R-3.5.0.tar.gz"