Update CMakeLists.txt (#280)

* Update CMakeLists.txt

FreeBSD has a port for pybind11, so use it when on FreeBSD instead of downloading a new copy.

* Update setup.py

Typo in url="", fixed.

* Create Makefile

CMakeLists.txt

@@ -16,12 +16,16 @@ project(chiapos C CXX ASM)
 # CMake 3.14+
 include(FetchContent)
 
+if (${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
+include(${CMAKE_INSTALL_PREFIX}/share/cmake/pybind11/pybind11Config.cmake)
+else()
 FetchContent_Declare(
   pybind11-src
   GIT_REPOSITORY https://github.com/pybind/pybind11.git
   GIT_TAG        v2.6.2
 )
 FetchContent_MakeAvailable(pybind11-src)
+endif()
 
 FetchContent_Declare(
   cxxopts

hellman_example/Makefile

@@ -0,0 +1,14 @@
+all: HellmanAttacks
+
+OBJ = aes.o bits.o calculate_bucket.o cxxopts.o encoding.o hellman.o picosha2.o plotter_disk.o pos_constants.o prover_disk.o sort_on_disk.o util.o verifier.o
+
+.SUFFIXES:.hpp .o
+
+.hpp.o:
+	$(CC) -c $(CXXFLAGS) $(DFLAGS) $(INCLUDES) $< -o $@
+
+HellmanAttacks: ${OBJ}
+	${CC} -o HellmanAttacks ${OBJ}
+
+clean:
+	rm -f HellmanAttacks ${OBJ}

setup.py

@@ -209,7 +209,7 @@ def build_extensions(self):
         python_requires=">=3.7",
         long_description=open("README.md").read(),
         long_description_content_type="text/markdown",
-        url="https://github.com/Chia-Network/chiavdf",
+        url="https://github.com/Chia-Network/chiapos",
         ext_modules=[CMakeExtension("chiapos", ".")],
         cmdclass=dict(build_ext=CMakeBuild),
         zip_safe=False,