minifi-cpp: Fix build with llvm C++ runtime

Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-extended/minifi-cpp/files/0001-Fix-build-with-libc.patch

@@ -0,0 +1,36 @@
+From 72e0fe484444169007e481c9b33d8f78ebe03674 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Thu, 27 May 2021 15:44:10 -0700
+Subject: [PATCH] Fix build with libc++
+
+In libc++ on 32-bit platforms, int64_t is defined as alias of long long. On 64-bit platforms: long.
+
+On the other hand in definition of std::chrono::duration aliases, that you can find here long long is used
+
+Therefore create custom unit to avoid incompatibility between libstdc++
+and libc++
+
+Upstream-Status: Pending
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ extensions/expression-language/Expression.cpp | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/extensions/expression-language/Expression.cpp b/extensions/expression-language/Expression.cpp
+index a25e1d3f..68d6320c 100644
+--- a/extensions/expression-language/Expression.cpp
++++ b/extensions/expression-language/Expression.cpp
+@@ -629,7 +629,8 @@ Value expr_toDate(const std::vector<Value> &args) {
+ #endif  // EXPRESSION_LANGUAGE_USE_DATE
+ 
+ Value expr_now(const std::vector<Value> &args) {
+-  return Value(std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count());
++  using Milliseconds = std::chrono::duration<std::int64_t, std::chrono::milliseconds::period>;
++  return Value(std::chrono::duration_cast<Milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count());
+ }
+ 
+ Value expr_unescapeCsv(const std::vector<Value> &args) {
+-- 
+2.31.1
+

meta-oe/recipes-extended/minifi-cpp/minifi-cpp_0.7.0.bb

@@ -29,6 +29,7 @@ SRC_URI = "git://github.com/apache/nifi-minifi-cpp.git \
             file://0003-cmake-BundledOSSPUUID.cmake-use-ossp-uuid-local-sour.patch \
             file://0001-civetweb-CMakeLists.txt-do-not-search-gcc-ar-and-gcc.patch \
             file://0001-cxxopts-Add-limits-header.patch \
+            file://0001-Fix-build-with-libc.patch \
             file://minifi.service \
             file://systemd-volatile.conf \
             file://sysvinit-volatile.conf \