From 634b84eb609e73a6997c7e7e8ae6dbbad6446b53 Mon Sep 17 00:00:00 2001
From: Howard Hinnant <howard.hinnant@gmail.com>
Date: Sat, 7 Jan 2017 18:27:40 -0500
Subject: [PATCH] Introduce set_install as suggested by PR 99 * Retain install
 variable as a function local static to maintain   recent fixes to
 initialization order problems.

---
 tz.cpp | 20 +++++++++++++++++---
 tz.h   |  1 +
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/tz.cpp b/tz.cpp
index 8c6f999..bf7e4b4 100644
--- a/tz.cpp
+++ b/tz.cpp
@@ -215,10 +215,10 @@ namespace date
 using namespace detail;
 
 static
-const std::string&
-get_install()
+std::string&
+access_install()
 {
-    static const std::string install 
+    static std::string install 
 #ifndef INSTALL
 
 #  ifdef _WIN32
@@ -239,6 +239,20 @@ get_install()
     return install;
 }
 
+void
+set_install(const std::string& s)
+{
+    access_install() = s;
+}
+
+static
+const std::string&
+get_install()
+{
+    static const std::string& ref = access_install();
+    return ref;
+}
+
 static
 std::string
 get_download_gz_file(const std::string& version)
diff --git a/tz.h b/tz.h
index ec5a8f2..6e7a4dd 100644
--- a/tz.h
+++ b/tz.h
@@ -767,6 +767,7 @@ operator<<(std::ostream& os, const TZ_DB& db);
 
 DATE_API const TZ_DB& get_tzdb();
 DATE_API const TZ_DB& reload_tzdb();
+DATE_API void         set_install(const std::string& install);
 
 #if HAS_REMOTE_API
 DATE_API std::string remote_version();