ensmallen: add to MacPorts

math/ensmallen/Portfile

@@ -0,0 +1,36 @@
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
+
+PortSystem          1.0
+PortGroup           cmake 1.0
+PortGroup           compilers 1.0
+
+compilers.choose    cc cxx
+
+name                ensmallen
+version             2.16.1
+categories          math devel science
+platforms           darwin
+license             BSD
+maintainers         {takeshi @tenomoto} openmaintainer
+description         flexible C++ library for efficient numerical optimization
+long_description \
+    ${name} provides a simple set of abstractions \
+    for writing an objective function to optimize. \
+    It also provides a large set of standard and cutting-edge optimizers \
+    that can be used  for virtually any numerical optimization task. \
+    These include full-batch gradient descent techniques, \
+    small-batch techniques, gradient-free optimizers, and constrained optimization.
+homepage            https://ensmallen.org
+master_sites        ${homepage}/files
+
+checksums           rmd160  546c4683d3eaf21d84866daade8f88724c90dcde \
+                    sha256  e496c207c20816150a535f891172357f3c136ad8e73cbbc01a77112eb38b0c9a \
+                    size    1265213
+
+depends_lib         port:armadillo
+
+cmake.out_of_source yes
+
+configure.args-append \
+                    -DARMADILLO_INCLUDE_DIR=${prefix}/include \
+                    -DARMADILLO_LIBRARY=${prefix}/lib/libarmadillo.dylib