pkgname=eigen3
pkgver=3.4.0
pkgrel=2
pkgdesc="Lightweight C++ template library for vector and matrix math, a.k.a. linear algebra."
arch=('x86_64')
url='https://eigen.tuxfamily.org'
license=('GPL3' 'LGPL2.1' 'BSD' 'custom:MPL2' 'custom:MINPACK')
depends=('fftw' 'freeglut')
makedepends=('cmake' 'pkg-config')
source=("https://gitlab.com/libeigen/eigen/-/archive/${pkgver}/eigen-${pkgver}.tar.bz2"
        "https://gitlab.com/libeigen/eigen/-/commit/ef3cc72cb65e2d500459c178c63e349bacfa834f.diff")
md5sums=('132dde48fe2b563211675626d29f1707'
         'd5ca26a3dc29170d555072f2ae82429f')

prepare() {
  cd eigen-${pkgver}

  #patch -p1 -i ${srcdir}/ef3cc72cb65e2d500459c178c63e349bacfa834f.diff
}

build() {
  cmake -B build -S eigen-${pkgver} \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_INSTALL_PREFIX=/usr \
    -DCMAKE_INSTALL_DATADIR=lib
  cmake --build build
}

package() {
  DESTDIR=${pkgdir} cmake --install build

  install -Dm644 eigen-${pkgver}/COPYING.MPL2 ${pkgdir}/usr/share/licenses/${pkgname}/COPYING.MPL2
  install -Dm644 eigen-${pkgver}/COPYING.BSD ${pkgdir}/usr/share/licenses/${pkgname}/COPYING.BSD
  install -Dm644 eigen-${pkgver}/COPYING.MINPACK ${pkgdir}/usr/share/licenses/${pkgname}/COPYING.MINPACK
}