From 70a7537584889cf612ddea83eb65fd42818f6e5e Mon Sep 17 00:00:00 2001
From: tomsmeding <tom.smeding@gmail.com>
Date: Fri, 7 Oct 2016 22:06:29 +0200
Subject: Make code work on Linux and older compilers

---
 Makefile   | 8 ++++++--
 bigint.cpp | 2 +-
 bigint.h   | 8 ++++----
 main.cpp   | 3 ++-
 rng.cpp    | 6 ++++++
 5 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index 14220de..5778290 100644
--- a/Makefile
+++ b/Makefile
@@ -1,10 +1,14 @@
 CXX = g++
-CXXFLAGS = -Wall -Wextra -std=c++11 -fwrapv
+CXXFLAGS = -Wall -Wextra -std=c++0x -fwrapv
+LDFLAGS =
 ifneq ($(DEBUG),)
 	CXXFLAGS += -g
 else
 	CXXFLAGS += -O2
 endif
+ifeq ($(shell uname),Linux)
+	LDFLAGS += -lbsd
+endif
 BIN = main
 
 .PHONY: all clean remake
@@ -18,7 +22,7 @@ remake: clean all
 
 
 $(BIN): $(patsubst %.cpp,%.o,$(wildcard *.cpp))
-	$(CXX) -o $@ $^
+	$(CXX) -o $@ $^ $(LDFLAGS)
 
 %.o: %.cpp $(wildcard *.h)
 	$(CXX) $(CXXFLAGS) -c -o $@ $<
diff --git a/bigint.cpp b/bigint.cpp
index 1f71cf9..98846e0 100644
--- a/bigint.cpp
+++ b/bigint.cpp
@@ -617,7 +617,7 @@ std::ostream& operator<<(std::ostream &os,Bigint b){
 	return os;
 #else
 	if(b==0)return os<<'0';
-	Bigint div(1000000000000000000LL);
+	Bigint div((int64_t)1000000000000000000LL);
 	vector<Bigint::longdigit_t> outbuf;
 	while(b!=0){
 		pair<Bigint,Bigint> dm=b.divmod(div);
diff --git a/bigint.h b/bigint.h
index 24f0945..bd15fd9 100644
--- a/bigint.h
+++ b/bigint.h
@@ -8,10 +8,10 @@
 
 class Bigint{
 public:
-	using digit_t=uint32_t;
-	using sdigit_t=int32_t;
-	using longdigit_t=uint64_t;
-	using slongdigit_t=int64_t;
+	typedef uint32_t digit_t;
+	typedef int32_t sdigit_t;
+	typedef uint64_t longdigit_t;
+	typedef int64_t slongdigit_t;
 	static const int digit_bits=8*sizeof(digit_t);
 
 private:
diff --git a/main.cpp b/main.cpp
index 2cd31ec..0481f6c 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,6 +2,7 @@
 #include <fstream>
 #include <sstream>
 #include <stdexcept>
+#include <algorithm>
 #include <cstdlib>
 #include <cctype>
 #include <ctime>
@@ -133,7 +134,7 @@ void testisqrt(int argc,char **argv){
 void performrsa(){
 	RSA::PrivateKey privkey;
 	Bigint p(1000000007),q(3000000019U);
-	privkey.pub.mod=3000000040000000133LL;
+	privkey.pub.mod=(int64_t)3000000040000000133LL;
 	privkey.pub.exp=65537;
 	{
 		Bigint x;
diff --git a/rng.cpp b/rng.cpp
index aba1c02..a6c61f5 100644
--- a/rng.cpp
+++ b/rng.cpp
@@ -4,6 +4,12 @@
 #include <cassert>
 #include "rng.h"
 
+#ifdef __APPLE__
+#include <cstdlib>
+#else
+#include <bsd/stdlib.h>
+#endif
+
 using namespace std;
 
 
-- 
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