nlopt 2.6.1

Formula/nlopt.rb

@@ -1,9 +1,9 @@
 class Nlopt < Formula
   desc "Free/open-source library for nonlinear optimization"
   homepage "https://nlopt.readthedocs.io/"
-  url "https://github.com/stevengj/nlopt/releases/download/nlopt-2.4.2/nlopt-2.4.2.tar.gz"
-  sha256 "8099633de9d71cbc06cd435da993eb424bbcdbded8f803cdaa9fb8c6e09c8e89"
-  revision 2
+  url "https://github.com/stevengj/nlopt/archive/v2.6.1.tar.gz"
+  sha256 "66d63a505187fb6f98642703bd0ef006fedcae2f9a6d1efa4f362ea919a02650"
+  head "https://github.com/stevengj/nlopt.git"
 
   bottle do
     cellar :any
@@ -13,81 +13,37 @@ class Nlopt < Formula
     sha256 "e3ea4064beff9f39ab2fed6a9e5f643a18fd7abb2b2302713ce7f58f970ceb09" => :sierra
   end
 
-  head do
-    url "https://github.com/stevengj/nlopt.git"
-    depends_on "cmake" => :build
-    depends_on "swig" => :build
-  end
-
-  depends_on "numpy"
+  depends_on "cmake" => [:build, :test]
 
   def install
-    ENV.deparallelize
+    args = *std_cmake_args + %w[
+      -DNLOPT_GUILE=OFF
+      -DNLOPT_MATLAB=OFF
+      -DNLOPT_OCTAVE=OFF
+      -DNLOPT_PYTHON=OFF
+      -DNLOPT_SWIG=OFF
+      -DNLOPT_TESTS=OFF
+    ]
 
-    if build.head?
-      system "cmake", ".", *std_cmake_args,
-                      "-DBUILD_MATLAB=OFF",
-                      "-DBUILD_OCTAVE=OFF",
-                      "-DWITH_CXX=ON"
-    else
-      system "./configure", "--prefix=#{prefix}",
-                            "--enable-shared",
-                            "--with-cxx",
-                            "--without-octave"
+    mkdir "build" do
+      system "cmake", *args, ".."
       system "make"
+      system "make", "install"
     end
-    system "make", "install"
 
-    # Create library links for C programs
-    %w[0.dylib dylib a].each do |suffix|
-      lib.install_symlink "#{lib}/libnlopt_cxx.#{suffix}" => "#{lib}/libnlopt.#{suffix}"
-    end
+    pkgshare.install "test/box.c"
   end
 
   test do
-    # Based on https://nlopt.readthedocs.io/en/latest/NLopt_Tutorial/#Example_in_C.2FC.2B.2B
-    (testpath/"test.c").write <<~EOS
-      #include <math.h>
-      #include <nlopt.h>
-      #include <stdio.h>
-      double myfunc(unsigned n, const double *x, double *grad, void *my_func_data) {
-        if (grad) {
-          grad[0] = 0.0;
-          grad[1] = 0.5 / sqrt(x[1]);
-        }
-        return sqrt(x[1]);
-      }
-      typedef struct { double a, b; } my_constraint_data;
-      double myconstraint(unsigned n, const double *x, double *grad, void *data) {
-        my_constraint_data *d = (my_constraint_data *) data;
-        double a = d->a, b = d->b;
-        if (grad) {
-          grad[0] = 3 * a * (a*x[0] + b) * (a*x[0] + b);
-          grad[1] = -1.0;
-        }
-        return ((a*x[0] + b) * (a*x[0] + b) * (a*x[0] + b) - x[1]);
-       }
-       int main() {
-        double lb[2] = { -HUGE_VAL, 0 }; /* lower bounds */
-        nlopt_opt opt;
-        opt = nlopt_create(NLOPT_LD_MMA, 2); /* algorithm and dimensionality */
-        nlopt_set_lower_bounds(opt, lb);
-        nlopt_set_min_objective(opt, myfunc, NULL);
-        my_constraint_data data[2] = { {2,0}, {-1,1} };
-        nlopt_add_inequality_constraint(opt, myconstraint, &data[0], 1e-8);
-        nlopt_add_inequality_constraint(opt, myconstraint, &data[1], 1e-8);
-        nlopt_set_xtol_rel(opt, 1e-4);
-        double x[2] = { 1.234, 5.678 };  /* some initial guess */
-        double minf; /* the minimum objective value, upon return */
-
-        if (nlopt_optimize(opt, x, &minf) < 0)
-          return 1;
-        else
-          printf("found minimum at f(%g,%g) = %0.10g", x[0], x[1], minf);
-        nlopt_destroy(opt);
-      }
+    (testpath/"CMakeLists.txt").write <<~EOS
+      cmake_minimum_required(VERSION 3.0)
+      project(box C)
+      find_package(NLopt REQUIRED)
+      add_executable(box "#{pkgshare}/box.c")
+      target_link_libraries(box NLopt::nlopt)
     EOS
-    system ENV.cc, "test.c", "-o", "test", "-L#{opt_lib}", "-lnlopt", "-lm"
-    assert_match "found minimum", shell_output("./test")
+    system "cmake", "."
+    system "make"
+    assert_match "found", shell_output("./box")
   end
 end