From fa193c6b1b7da8f72a399bfddb1497655ce1685c Mon Sep 17 00:00:00 2001
From: MarcoFalke <falke.marco@gmail.com>
Date: Fri, 5 Jun 2020 16:11:36 -0400
Subject: [PATCH] Add missing includes to fix compile errors
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fs.cpp:35:17: error: no member named 'strerror' in namespace 'std'
    return std::strerror(errno);
           ~~~~~^
fs.cpp:49:9: error: use of undeclared identifier 'close'
        close(fd);
        ^
2 errors generated.

./interfaces/chain.h:265:55: error: ‘std::function’ has not been declared
     virtual void rpcRunLater(const std::string& name, std::function<void()> fn, int64_t seconds) = 0;
                                                       ^~~
---
 src/fs.cpp             | 5 ++++-
 src/interfaces/chain.h | 1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/fs.cpp b/src/fs.cpp
index e68c97b3caf..eef9c81de92 100644
--- a/src/fs.cpp
+++ b/src/fs.cpp
@@ -5,10 +5,12 @@
 #include <fs.h>
 
 #ifndef WIN32
+#include <cstring>
 #include <fcntl.h>
 #include <string>
 #include <sys/file.h>
 #include <sys/utsname.h>
+#include <unistd.h>
 #else
 #ifndef NOMINMAX
 #define NOMINMAX
@@ -31,7 +33,8 @@ FILE *fopen(const fs::path& p, const char *mode)
 
 #ifndef WIN32
 
-static std::string GetErrorReason() {
+static std::string GetErrorReason()
+{
     return std::strerror(errno);
 }
 
diff --git a/src/interfaces/chain.h b/src/interfaces/chain.h
index 61d7ddb9340..65695707f75 100644
--- a/src/interfaces/chain.h
+++ b/src/interfaces/chain.h
@@ -8,6 +8,7 @@
 #include <optional.h>               // For Optional and nullopt
 #include <primitives/transaction.h> // For CTransactionRef
 
+#include <functional>
 #include <memory>
 #include <stddef.h>
 #include <stdint.h>