add conanfile.py, and fix a couple windows warnings.

parallel_hashmap/conanfile.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+from conans import ConanFile, tools
+import os
+
+class SparseppConan(ConanFile):
+    name = "parallel_hashmap"
+    version = "1.27"
+    description = "A header-only, very fast and memory-friendly hash map"
+    
+    # Indicates License type of the packaged library
+    license = "https://github.com/greg7mdp/parallel-hashmap/blob/master/LICENSE"
+    
+    # Packages the license for the conanfile.py
+    exports = ["LICENSE"]
+    
+    # Custom attributes for Bincrafters recipe conventions
+    source_subfolder = "source_subfolder"
+    
+    def source(self):
+        source_url = "https://github.com/greg7mdp/parallel-hashmap"
+        tools.get("{0}/archive/{1}.tar.gz".format(source_url, self.version))
+        extracted_dir = self.name + "-" + self.version
+
+        #Rename to "source_folder" is a convention to simplify later steps
+        os.rename(extracted_dir, self.source_subfolder)
+
+
+    def package(self):
+        include_folder = os.path.join(self.source_subfolder, "parallel_hashmap")
+        self.copy(pattern="LICENSE")
+        self.copy(pattern="*", dst="include/parallel_hashmap", src=include_folder)
+
+    def package_id(self):
+        self.info.header_only()

parallel_hashmap/phmap.h

@@ -3561,8 +3561,8 @@ namespace memory_internal {
 // ----------------------------------------------------------------------------
 template <class Pair, class = std::true_type>
 struct OffsetOf {
-  static constexpr size_t kFirst = -1;
-  static constexpr size_t kSecond = -1;
+    static constexpr size_t kFirst = (size_t)-1;
+  static constexpr size_t kSecond = (size_t)-1;
 };
 
 template <class Pair>