Add -fPIE to big-int makefile.

Author: NlightNFotis

src/big-int/makefile

@@ -4,6 +4,17 @@ include ../common
 SRC = bigint-func.cc bigint.cc
 CLEANFILES = big-int$(LIBEXT)
 
+ifeq ($(OS),Windows_NT)
+    detected_OS := Windows
+else
+    detected_OS := $(shell sh -c 'uname 2>/dev/null || echo Unknown')
+endif
+
+ifeq ($(detected_OS),Linux)
+    CFLAGS += -fPIE
+    CXXFLAGS += -fPIE
+endif
+
 all: big-int$(LIBEXT)
 
 big-int$(LIBEXT): $(OBJ)