From 4193457bf4d2f8191203a0c179afaff40b3776ff Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Mon, 6 Apr 2020 05:55:54 +0200
Subject: [PATCH 1/4] build: Make installation prefix configurable

Nix uses different prefix so we need it configurable.
---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index ea0b60e..271e5e4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,8 @@
 KFVER=131
 
+PREFIX ?= /usr/local
+LIBDIR ?= $(PREFIX)/lib
+
 ifeq ($(shell uname -s),Darwin)
 	SHARED := -Wl,-install_name,libkissfft.dylib -o libkissfft.dylib
 else
@@ -12,7 +15,7 @@ all:
 	gcc -shared $(SHARED) kiss_fft.o
 
 install: all
-	cp libkissfft.so /usr/local/lib/
+	cp libkissfft.so $(LIBDIR)
 
 doc:
 	@echo "Start by reading the README file.  If you want to build and test lots of stuff, do a 'make testall'"

From fffc26e89a44bbf6876e52496364e708110678e2 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Mon, 6 Apr 2020 06:03:06 +0200
Subject: [PATCH 2/4] build: Fix make install on Darwin

---
 Makefile | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 271e5e4..9398ac1 100644
--- a/Makefile
+++ b/Makefile
@@ -4,18 +4,20 @@ PREFIX ?= /usr/local
 LIBDIR ?= $(PREFIX)/lib
 
 ifeq ($(shell uname -s),Darwin)
-	SHARED := -Wl,-install_name,libkissfft.dylib -o libkissfft.dylib
+	SHARED_NAME := libkissfft.dylib
+	SHARED_FLAGS := -Wl,-install_name,$(SHARED_NAME)
 else
-	SHARED := -Wl,-soname,libkissfft.so -o libkissfft.so
+	SHARED_NAME := libkissfft.so
+	SHARED_FLAGS := -Wl,-soname,$(SHARED_NAME)
 endif
 
 all:
 	gcc -Wall -fPIC -c *.c -Dkiss_fft_scalar=float -o kiss_fft.o
 	ar crus libkissfft.a kiss_fft.o
-	gcc -shared $(SHARED) kiss_fft.o
+	gcc -shared $(SHARED_FLAGS) -o $(SHARED_NAME) kiss_fft.o
 
 install: all
-	cp libkissfft.so $(LIBDIR)
+	cp $(SHARED_NAME) $(LIBDIR)
 
 doc:
 	@echo "Start by reading the README file.  If you want to build and test lots of stuff, do a 'make testall'"

From 1d7e76e0af18bb124ac10ddea9b10c00d2532430 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Mon, 6 Apr 2020 07:32:55 +0200
Subject: [PATCH 3/4] build: Use install command for installing files

In build chroots of some package managers, the libdir does not exist yet so we need to create it.
---
 Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 9398ac1..77ede20 100644
--- a/Makefile
+++ b/Makefile
@@ -3,6 +3,8 @@ KFVER=131
 PREFIX ?= /usr/local
 LIBDIR ?= $(PREFIX)/lib
 
+INSTALL ?= install
+
 ifeq ($(shell uname -s),Darwin)
 	SHARED_NAME := libkissfft.dylib
 	SHARED_FLAGS := -Wl,-install_name,$(SHARED_NAME)
@@ -17,7 +19,7 @@ all:
 	gcc -shared $(SHARED_FLAGS) -o $(SHARED_NAME) kiss_fft.o
 
 install: all
-	cp $(SHARED_NAME) $(LIBDIR)
+	$(INSTALL) -Dt $(LIBDIR) $(SHARED_NAME)
 
 doc:
 	@echo "Start by reading the README file.  If you want to build and test lots of stuff, do a 'make testall'"

From b39de321ca5f3707ac4cd756e2fb4377709cd418 Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Mon, 6 Apr 2020 08:04:19 +0200
Subject: [PATCH 4/4] build: Make datatype configurable

---
 Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 77ede20..bcc44fa 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,7 @@
 KFVER=131
 
+DATATYPE ?= float
+
 PREFIX ?= /usr/local
 LIBDIR ?= $(PREFIX)/lib
 
@@ -14,7 +16,7 @@ else
 endif
 
 all:
-	gcc -Wall -fPIC -c *.c -Dkiss_fft_scalar=float -o kiss_fft.o
+	gcc -Wall -fPIC -c *.c -Dkiss_fft_scalar=$(DATATYPE) -o kiss_fft.o
 	ar crus libkissfft.a kiss_fft.o
 	gcc -shared $(SHARED_FLAGS) -o $(SHARED_NAME) kiss_fft.o