Use port_compiler to build nif

rebar.config

@@ -1,12 +1,38 @@
-{erl_opts, [debug_info]}.
+{erl_opts, [debug_info,
+            {platform_define, "^(R14|R15|R16B|17)", 'random_module_available'},
+            {if_version_below, "23", {d, 'INCLUDE_ERL_INTERFACE'}}
+           ]}.
 {deps, [{prometheus, "~> 4.0"}]}.
 
-{pre_hooks,
- [{"linux|darwin", compile, "make -C c_src"},
-  {"freebsd", compile, "gmake -C c_src"}]}.
-{post_hooks,
- [{"linux|darwin", clean, "make -C c_src clean"},
-  {"freebsd", clean, "gmake -C c_src clean"}]}.
-
-{plugins, [{rebar3_archive_plugin, "0.0.2"},
-           rebar3_hex]}.
+{plugins, [
+            {pc, {git, "https://github.com/blt/port_compiler.git", {branch, "master"}}}
+          ]}.
+{port_specs, [
+    {".*-apple-darwin.*", "priv/prometheus_process_collector.so",
+        ["c_src/prometheus_process_collector_nif.cc", "c_src/prometheus_process_info_macos.cc"]
+    },
+    {".*-linux", "priv/prometheus_process_collector.so",
+        ["c_src/prometheus_process_collector_nif.cc", "c_src/prometheus_process_info_linux.cc"]
+    },
+    {".*-freebsd.*", "priv/prometheus_process_collector.so",
+        ["c_src/prometheus_process_collector_nif.cc", "c_src/prometheus_process_info_freebsd.cc"]
+    }
+]}.
+{port_env, [
+    {"CXXFLAGS", "-std=c++11 -Wall -O3 -finline-functions"},
+    {".*-linux", "CXX", "g++"},
+    {".*-apple-darwin.*", "CXX", "c++"},
+    {".*-freebsd.*", "CXX", "c++"}
+]}.
+{so_name, "prometheus_process_collector.so"}.
+{artifacts, ["priv/prometheus_process_collector.so"]}.
+{provider_hooks, [
+    {pre, [
+        {compile,
+            {pc, compile}
+        },
+        {clean,
+            {pc, clean}
+        }
+    ]}
+]}.