From 2f0445b984be58c954a874224d525e557d7d4bf2 Mon Sep 17 00:00:00 2001
From: Jamie Snape <jamie.snape@kitware.com>
Date: Thu, 11 Apr 2019 09:14:15 -0400
Subject: [PATCH] osqp 0.5.0 (new formula)

Closes #38814.

Signed-off-by: FX Coudert <fxcoudert@gmail.com>
---
 Formula/osqp.rb | 91 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Formula/osqp.rb

diff --git a/Formula/osqp.rb b/Formula/osqp.rb
new file mode 100644
index 0000000000..b30e97f544
--- /dev/null
+++ b/Formula/osqp.rb
@@ -0,0 +1,91 @@
+class Osqp < Formula
+  desc "Operator splitting QP solver"
+  homepage "https://osqp.org/"
+  url "https://github.com/oxfordcontrol/osqp/archive/v0.5.0.tar.gz"
+  sha256 "e0932d1f7bc56dbe526bee4a81331c1694d94c570f8ac6a6cb413f38904e0f64"
+
+  depends_on "cmake" => [:build, :test]
+
+  resource "qdldl" do
+    url "https://github.com/oxfordcontrol/qdldl/archive/v0.1.3.tar.gz"
+    sha256 "a2c3a7d0c6a48b2fab7400fa8ca72a34fb1e3a19964b281c73564178f97afe54"
+  end
+
+  def install
+    # Install qdldl git submodule not included in release source archive.
+    (buildpath/"lin_sys/direct/qdldl/qdldl_sources").install resource("qdldl")
+
+    args = *std_cmake_args + %w[
+      -DENABLE_MKL_PARDISO=OFF
+    ]
+
+    mkdir "build" do
+      system "cmake", *args, ".."
+      system "make"
+      system "make", "install"
+    end
+
+    # Remove unnecessary qdldl install.
+    rm_rf include/"qdldl"
+    rm_rf lib/"cmake/qdldl"
+    rm lib/"libqdldl.a"
+    rm lib/"libqdldl.dylib"
+  end
+
+  test do
+    (testpath/"CMakeLists.txt").write <<~EOS
+      cmake_minimum_required(VERSION 3.2 FATAL_ERROR)
+      project(osqp_demo LANGUAGES C)
+      find_package(osqp CONFIG REQUIRED)
+      add_executable(osqp_demo osqp_demo.c)
+      target_link_libraries(osqp_demo PRIVATE osqp::osqp)
+      add_executable(osqp_demo_static osqp_demo.c)
+      target_link_libraries(osqp_demo_static PRIVATE osqp::osqpstatic)
+    EOS
+    (testpath/"osqp_demo.c").write <<~EOS
+      #include <assert.h>
+      #include <osqp.h>
+      int main() {
+        c_float P_x[4] = {4.0, 1.0, 1.0, 2.0};
+        c_int P_nnz = 4;
+        c_int P_i[4] = {0, 1, 0, 1};
+        c_int P_p[3] = {0, 2, 4};
+        c_float q[2] = {1.0, 1.0};
+        c_float A_x[4] = {1.0, 1.0, 1.0, 1.0};
+        c_int A_nnz = 4;
+        c_int A_i[4] = {0, 1, 0, 2};
+        c_int A_p[3] = {0, 2, 4};
+        c_float l[3] = {1.0, 0.0, 0.0};
+        c_float u[3] = {1.0, 0.69999999999999995559, 0.69999999999999995559};
+        c_int n = 2;
+        c_int m = 3;
+        OSQPSettings *settings = (OSQPSettings *)c_malloc(sizeof(OSQPSettings));
+        OSQPWorkspace *workspace;
+        OSQPData *data;
+        data = (OSQPData *)c_malloc(sizeof(OSQPData));
+        data->n = n;
+        data->m = m;
+        data->P = csc_matrix(data->n, data->n, P_nnz, P_x, P_i, P_p);
+        data->q = q;
+        data->A = csc_matrix(data->m, data->n, A_nnz, A_x, A_i, A_p);
+        data->l = l;
+        data->u = u;
+        osqp_set_default_settings(settings);
+        workspace = osqp_setup(data, settings);
+        assert(workspace != OSQP_NULL);
+        osqp_solve(workspace);
+        assert(workspace->info->status_val == OSQP_SOLVED);
+        osqp_cleanup(workspace);
+        c_free(data->A);
+        c_free(data->P);
+        c_free(data);
+        c_free(settings);
+        return 0;
+      }
+    EOS
+    system "cmake", "."
+    system "make"
+    system "./osqp_demo"
+    system "./osqp_demo_static"
+  end
+end