--- Makefile.orig	2019-02-01 15:57:58.000000000 +0300
+++ Makefile	2019-05-30 12:13:11.283897400 +0300
@@ -1,9 +1,19 @@
 KFVER=131
 
+PREFIX ?= /usr
+BINDIR = $(PREFIX)/bin
+INCLUDEDIR = $(PREFIX)/include
+LIBDIR = $(PREFIX)/lib
+
 ifeq ($(shell uname -s),Darwin)
-	SHARED := -Wl,-install_name,libkissfft.dylib -o libkissfft.dylib
+	LIB_EXT = .dylib
+	SHARED := -Wl,-install_name,libkissfft$(LIB_EXT) -o libkissfft$(LIB_EXT)
+else ifeq ($(findstring MINGW,$(shell uname -s)), MINGW)
+	LIB_EXT = .dll
+	SHARED :=  -o libkissfft$(LIB_EXT) -Wl,--out-implib,libkissfft.dll.a
 else
-	SHARED := -Wl,-soname,libkissfft.so -o libkissfft.so
+	LIB_EXT = .so
+	SHARED := -Wl,-soname,libkissfft$(LIB_EXT) -o libkissfft.so
 endif
 
 all:
@@ -12,7 +22,10 @@
 	gcc -shared $(SHARED) kiss_fft.o
 
 install: all
-	cp libkissfft.so /usr/local/lib/
+	cp libkissfft$(LIB_EXT) $(DESTDIR)$(BINDIR)/
+	cp libkissfft.a $(DESTDIR)$(LIBDIR)/
+	cp libkissfft.dll.a $(DESTDIR)$(LIBDIR)/
+	cp kiss_fft.h $(DESTDIR)$(INCLUDEDIR)/
 
 doc:
 	@echo "Start by reading the README file.  If you want to build and test lots of stuff, do a 'make testall'"