opennurbs: multiple build systems (#44871)

var/spack/repos/builtin/packages/opennurbs/package.py

@@ -4,10 +4,11 @@
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
 
+from spack.build_systems import cmake, makefile
 from spack.package import *
 
 
-class Opennurbs(Package):
+class Opennurbs(CMakePackage, MakefilePackage):
     """OpenNURBS is an open-source NURBS-based geometric modeling library
     and toolset, with meshing and display / output functions.
     """
@@ -20,34 +21,31 @@ class Opennurbs(Package):
     license("Zlib")
 
     version("develop", branch="develop")
-
     version(
         "percept",
         sha256="d12a8f14f0b27d286fb7a75ab3c4e300f77d1fbb028326d1c8d28e4641605538",
         url="https://github.com/PerceptTools/percept/raw/master/build-cmake/opennurbs-percept.tar.gz",
     )
 
+    build_system(
+        conditional("cmake", when="@1:"), conditional("makefile", when="@:0"), default="cmake"
+    )
+
     variant("shared", default=True, description="Build shared libraries")
 
-    # CMake installation method
-    def install(self, spec, prefix):
-        cmake_args = [self.define_from_variant("BUILD_SHARED_LIBS", "shared")]
 
-        cmake_args.extend(std_cmake_args)
+class CMakeBuilder(cmake.CMakeBuilder):
+    def cmake_args(self):
+        return [self.define_from_variant("BUILD_SHARED_LIBS", "shared")]
 
-        with working_dir("spack-build", create=True):
-            cmake("..", *cmake_args)
-            make()
-            make("install")
 
-    # Pre-cmake installation method
-    @when("@percept")
-    def install(self, spec, prefix):
-        make(parallel=False)
+class MakefileBuilder(makefile.MakefileBuilder):
 
-        # Install manually
+    def build(self, pkg, spec, prefix):
+        make("RM=rm -f", "AR=ar cr", f"CC={spack_cc}", f"CCC={spack_cxx}", parallel=False)
+
+    def install(self, pkg, spec, prefix):
         mkdir(prefix.lib)
         mkdir(prefix.include)
         install("libopenNURBS.a", prefix.lib)
-        install_tree("zlib", join_path(prefix.include, "zlib"))
         install("*.h", prefix.include)