From 6f8e36ac3dd7d3e0587297d6ecdc8e1b19a863b6 Mon Sep 17 00:00:00 2001
From: Niels <niels.lohmann@gmail.com>
Date: Sun, 6 Dec 2015 17:33:47 +0100
Subject: [PATCH] fixes #136

---
 README.md         |  1 +
 src/json.hpp      | 20 +++++++++++++++++++-
 src/json.hpp.re2c | 19 +++++++++++++++++++
 3 files changed, 39 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 76c32d4470..0a382e7eb8 100644
--- a/README.md
+++ b/README.md
@@ -380,6 +380,7 @@ I deeply appreciate the help of the following people.
 - [Huu Nguyen](https://github.com/whoshuu) correct a variable name in the documentation.
 - [Silverweed](https://github.com/silverweed) overloaded `parse()` to accept an rvalue reference.
 - [dariomt](https://github.com/dariomt) fixed a subtlety in MSVC type support.
+- [ZahlGraf](https://github.com/ZahlGraf) added a workaround that allows compilation using Android NDK.
 
 Thanks a lot for helping out!
 
diff --git a/src/json.hpp b/src/json.hpp
index 1e3cd11fde..aa262ae3fe 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -70,6 +70,25 @@ Class @ref nlohmann::basic_json is a good entry point for the documentation.
     using ssize_t = SSIZE_T;
 #endif
 
+// workaround for Android NDK (see https://github.com/nlohmann/json/issues/136)
+#ifdef __ANDROID__
+namespace std
+{
+template <typename T>
+std::string to_string(T v)
+{
+    std::ostringstream ss;
+    ss << v;
+    return ss.str();
+}
+
+inline long double strtold(const char* str, char** str_end)
+{
+    return strtod(str, str_end);
+}
+}
+#endif
+
 /*!
 @brief namespace for Niels Lohmann
 @see https://github.com/nlohmann
@@ -6009,7 +6028,6 @@ class basic_json
                     64,  64,  64,  64,  64,  64,  64,  64,
                     64,  64,  64,  64,  64,  64,  64,  64,
                 };
-
                 if ((m_limit - m_cursor) < 5)
                 {
                     yyfill();    // LCOV_EXCL_LINE;
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 84559240b4..88391d61db 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -70,6 +70,25 @@ Class @ref nlohmann::basic_json is a good entry point for the documentation.
     using ssize_t = SSIZE_T;
 #endif
 
+// workaround for Android NDK (see https://github.com/nlohmann/json/issues/136)
+#ifdef __ANDROID__
+namespace std
+{
+template <typename T>
+std::string to_string(T v)
+{
+    std::ostringstream ss;
+    ss << v;
+    return ss.str();
+}
+
+inline long double strtold(const char* str, char** str_end)
+{
+    return strtod(str, str_end);
+}
+}
+#endif
+
 /*!
 @brief namespace for Niels Lohmann
 @see https://github.com/nlohmann