microsoft · strega-nil · Aug 7, 2020 · Jul 17, 2020 · Jul 17, 2020 · Jul 17, 2020
diff --git a/ports/armadillo/CONTROL b/ports/armadillo/CONTROL
@@ -1,4 +1,5 @@
 Source: armadillo
-Version: 2019-04-16-8
+Version: 2019-04-16
+Port-Version: 9
 Description: Armadillo is a high quality linear algebra library (matrix maths) for the C++ language, aiming towards a good balance between speed and ease of use
-Build-Depends: openblas (!osx), clapack (!osx)
+Build-Depends: openblas (!osx), lapack-select[core]
diff --git a/ports/blaze/CONTROL b/ports/blaze/CONTROL
@@ -1,5 +1,6 @@
 Source: blaze
 Version: 3.7
-Build-Depends: clapack (!osx), boost-exception
+Port-Version: 1
+Build-Depends: lapack-select[core], boost-exception
 Homepage: https://bitbucket.org/blaze-lib/blaze
 Description: Blaze is an open-source, high-performance C++ math library for dense and sparse arithmetic.
diff --git a/ports/ceres/CONTROL b/ports/ceres/CONTROL
@@ -1,11 +1,12 @@
 Source: ceres
-Version: 1.14.0-7
+Version: 1.14.0
+Port-Version: 8
 Build-Depends: glog, eigen3
 Homepage: https://github.com/ceres-solver/ceres-solver
 Description: non-linear optimization package
 
 Feature: lapack
-Build-Depends: clapack (!osx)
+Build-Depends: lapack-select[core]
 Description: Use Lapack in Ceres
 
 Feature: suitesparse

diff --git a/ports/clapack/CONTROL b/ports/clapack/CONTROL
@@ -1,5 +1,6 @@
 Source: clapack
-Version: 3.2.1-13
+Version: 3.2.1
+Port-Version: 13
 Homepage: https://www.netlib.org/clapack
 Description: CLAPACK (f2c'ed version of LAPACK)
 Build-Depends: openblas (!osx)
diff --git a/ports/dlib/CONTROL b/ports/dlib/CONTROL
@@ -1,6 +1,7 @@
 Source: dlib
-Version: 19.19-1
-Build-Depends: libjpeg-turbo, libpng, openblas (!osx), clapack (!osx)
+Version: 19.19
+Port-Version: 2
+Build-Depends: libjpeg-turbo, libpng, openblas (!osx), lapack-select[core]
 Homepage: https://github.com/davisking/dlib
 Description: Modern C++ toolkit containing machine learning algorithms and tools for creating complex software in C++
 Default-Features: fftw3, sqlite3

diff --git a/ports/ensmallen/CONTROL b/ports/ensmallen/CONTROL
@@ -1,6 +1,7 @@
 Source: ensmallen
 Version: 2.11.2
+Port-Version: 1
 Homepage: https://github.com/mlpack/ensmallen
 Description: A header-only C++ library for mathematical optimization.
-Build-Depends: openblas (!osx), clapack (!osx), armadillo
+Build-Depends: openblas (!osx), lapack-select[core], armadillo
 
diff --git a/ports/g2o/CONTROL b/ports/g2o/CONTROL
@@ -1,5 +1,6 @@
 Source: g2o
 Version: 2020-02-07
-Build-Depends: suitesparse, eigen3, clapack (!osx), ceres
+Port-Version: 1
+Build-Depends: suitesparse, eigen3, lapack-select[core], ceres
 Description: g2o: A General Framework for Graph Optimization
 Homepage: https://openslam.org/g2o.html
diff --git a/ports/geogram/CONTROL b/ports/geogram/CONTROL
@@ -1,8 +1,9 @@
 Source: geogram
-Version: 1.6.9-7
+Version: 1.6.9
+Port-Version: 8
 Homepage: https://gforge.inria.fr/projects/geogram/
 Description: Geogram is a programming library of geometric algorithms.
-Build-Depends: openblas (!osx), clapack (!osx)
+Build-Depends: openblas (!osx), lapack-select[core]
 
 Feature: graphics
 Description: Build viewers and geogram_gfx library.

diff --git a/ports/lapack-select/CMakeLists.txt b/ports/lapack-select/CMakeLists.txt
@@ -0,0 +1,5 @@
+cmake_minimum_required(VERSION 3.17)
+
+project(Find_LAPACK_external)
+find_package(LAPACK REQUIRED)
+#TODO make sure that the found LAPACK is outside VCPKG
diff --git a/ports/lapack-select/CONTROL b/ports/lapack-select/CONTROL
@@ -0,0 +1,18 @@
+Source: lapack-select
+Version: 1
+Description: Port to select the LAPACK — Linear Algebra PACKage implementation
+Default-Features: platform-select
+
+Feature: clapack
+Description: Use clapack
+Build-Depends: clapack
+
+Feature: lapack-reference
+Description: Use the netlib lapack reference implementation (TODO)
+
+Feature: external
+Description: Use a LAPACK library outside of VCPKG. This port makes sure it can be found via CMake
+
+Feature: platform-select
+Description: Used to select the default implementation by platform. Workaround since Default-Features does not allow conditionals
+Build-Depends: lapack-select[core,clapack] (!osx), lapack-select[core,external] (osx)
diff --git a/ports/lapack-select/portfile.cmake b/ports/lapack-select/portfile.cmake
@@ -0,0 +1,20 @@
+SET(VCPKG_POLICY_EMPTY_PACKAGE enabled)
+
+ list(REMOVE_ITEM FEATURES platform-select)
+
+list(LENGTH FEATURES NUMBER_ELEMS)
+if(NUMBER_ELEMS GREATER 2)
+    message(FATAL_ERROR "Cannot select more than one LAPACK implementation!")
+    # Ports cannot depend on more than one LAPACK implementation. Always use Build-Depends: lapack-select[core]
+endif()
+if(NUMBER_ELEMS LESS 2)
+    message(FATAL_ERROR "Need to select at least one LAPACK implementation! Only using feature [core] is not supported")
+    # Ports should only depend on lapack-select[core] so that they don't implicitly depend on the selected default feature
+endif()
+
+# In the future this port might also be used to install a vcpkg-cmake-wrapper or 
+# a FindLAPACK module to make sure all dependent ports use the same LAPACK implementation
+
+IF("external" IN_LIST FEATURES)
+    vcpkg_configure_cmake(SOURCE_PATH ${CURRENT_PORT_DIR})
+endif()
diff --git a/ports/mlpack/CONTROL b/ports/mlpack/CONTROL
@@ -1,8 +1,9 @@
 Source: mlpack
-Version: 3.2.2-3
+Version: 3.2.2
+Port-Version: 4
 Homepage: https://github.com/mlpack/mlpack
 Description: mlpack is a fast, flexible machine learning library, written in C++, that aims to provide fast, extensible implementations of cutting-edge machine learning algorithms.
-Build-Depends: openblas (!osx), clapack (!osx), boost, armadillo, ensmallen, stb
+Build-Depends: openblas (!osx), lapack-select[core], boost, armadillo, ensmallen, stb
 
 Feature: tools
 Description: Build command-line executables.
diff --git a/ports/suitesparse/CONTROL b/ports/suitesparse/CONTROL
@@ -1,6 +1,7 @@
 Source: suitesparse
-Version: 5.4.0-6
-Build-Depends: clapack (!osx)
+Version: 5.4.0
+Port-Version: 7
+Build-Depends: lapack-select[core]
 Homepage: http://faculty.cse.tamu.edu/davis/SuiteSparse
 Description: algebra library