From afc836902be35e37b5860d42029514cef6394454 Mon Sep 17 00:00:00 2001
From: zv0n <tom.zvon@gmail.com>
Date: Sun, 22 Nov 2020 21:58:37 +0100
Subject: [PATCH] Make dynamic library work on macos

---
 .gitignore                   |  1 +
 sdlpp/Makefile               | 23 +++++++++++++++++++++--
 sdlpp/sdlpp_linerenderer.cpp |  1 +
 sdlpp/sdlpp_rectrenderer.cpp |  1 +
 tetris/Makefile              | 24 ++++++++++++++++++++++--
 5 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/.gitignore b/.gitignore
index 91600cf..9f435c9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,7 @@
 *.o
 *.so
 *.so.*
+*.dylib
 demo
 test
 tetris/tetris
diff --git a/sdlpp/Makefile b/sdlpp/Makefile
index 1f7ca37..7e72384 100644
--- a/sdlpp/Makefile
+++ b/sdlpp/Makefile
@@ -1,12 +1,24 @@
 CXX ?= g++
 CPPFLAGS = -std=c++14 -Wall -Wextra -pedantic
-LIBRARYFLAGS = -fPIC
 
 MAJOR ?= 1
 MINOR ?= 0
 RELEASE ?= 0
 
+ifeq ($(OS),Windows_NT)
+UNAME_S := Windows
+else
+UNAME_S := $(shell uname -s)
+endif
+
+ifeq ($(UNAME_S),Linux)
 SDLPPLIBRARY = libsdlpp.so.${MAJOR}.${MINOR}.${RELEASE}
+LIBRARYFLAGS = -fPIC
+endif
+ifeq ($(UNAME_S),Darwin)
+SDLPPLIBRARY = libsdlpp.dylib
+LIBRARYFLAGS =
+endif
 
 OBJECTFILES = sdlpp_circlecolider.o sdlpp_circlerenderer.o sdlpp_collision.o sdlpp_common.o sdlpp_font.o sdlpp_linerenderer.o sdlpp_rectcolider.o sdlpp_rectrenderer.o sdlpp_renderer.o sdlpp_renderobject.o sdlpp_scene.o sdlpp_textrenderer.o sdlpp_texture.o sdlpp_window.o
 
@@ -15,13 +27,20 @@ all: ${SDLPPLIBRARY}
 %.o: %.cpp
 	${CXX} ${CPPFLAGS} ${LIBRARYFLAGS} -c $< -o $@
 
+ifeq ($(UNAME_S),Linux)
 ${SDLPPLIBRARY}: ${OBJECTFILES}
 	${CXX} ${CPPFLAGS} -shared -Wl,-soname,libsdlpp.so.${MAJOR}\
 		-o ${SDLPPLIBRARY} $^
 	ln -sf ${SDLPPLIBRARY} libsdlpp.so
 	ln -sf ${SDLPPLIBRARY} libsdlpp.so.${MAJOR}
+endif
+ifeq ($(UNAME_S),Darwin)
+${SDLPPLIBRARY}: ${OBJECTFILES}
+	${CXX} ${CPPFLAGS} -dynamiclib -install_name ${SDLPPLIBRARY}\
+		-current_version ${MAJOR}.${MINOR} $^ -lSDL2 -lSDL2_image -lSDL2_gfx -lSDL2_ttf -o $@
+endif
 
 clean:
-	${RM} *.so* *.o
+	${RM} *.so* *.o *.dylib
 
 .PHONY: all clean test
diff --git a/sdlpp/sdlpp_linerenderer.cpp b/sdlpp/sdlpp_linerenderer.cpp
index db9f717..2b74b1c 100644
--- a/sdlpp/sdlpp_linerenderer.cpp
+++ b/sdlpp/sdlpp_linerenderer.cpp
@@ -1,3 +1,4 @@
+#include <cmath>
 #include "sdlpp_linerenderer.hpp"
 
 namespace SDLPP {
diff --git a/sdlpp/sdlpp_rectrenderer.cpp b/sdlpp/sdlpp_rectrenderer.cpp
index 8d4c8bf..50aff61 100644
--- a/sdlpp/sdlpp_rectrenderer.cpp
+++ b/sdlpp/sdlpp_rectrenderer.cpp
@@ -1,3 +1,4 @@
+#include <cmath>
 #include "sdlpp_rectrenderer.hpp"
 
 namespace SDLPP {
diff --git a/tetris/Makefile b/tetris/Makefile
index 589e993..4f6ae24 100644
--- a/tetris/Makefile
+++ b/tetris/Makefile
@@ -3,11 +3,28 @@ CFLAGS ?= -O2 -Wall -Wextra -std=c++14
 PREFIX ?= /usr/local/bin
 LDFLAGS ?= -lSDL2 -lSDL2_image -lSDL2_gfx -lSDL2_ttf -pthread
 
+ifeq ($(OS),Windows_NT)
+UNAME_S := Windows
+else
+UNAME_S := $(shell uname -s)
+endif
+
+TETRIS_OBJECTS = tetris.o scenes.o config.o functions.o global_vars.o
+
+ifeq ($(UNAME_S),Linux)
+TETRIS_OBJECTS += libsdlpp.so
+SDLLIB = libsdlpp
+endif
+ifeq ($(UNAME_S),Darwin)
+TETRIS_OBJECTS += libsdlpp.dylib
+SDLLIB = sdlpp
+endif
+
 .PHONY: default
 default: tetris
 
-tetris: tetris.o scenes.o config.o functions.o global_vars.o libsdlpp.so
-	$(CXX) $(CFLAGS) -o $@ $^ ${LDFLAGS} -L -llibsdlpp
+tetris: ${TETRIS_OBJECTS}
+	$(CXX) $(CFLAGS) -o $@ $^ ${LDFLAGS} -L $(shell pwd) -l${SDLLIB}
 
 tetris.o: tetris.cpp ../sdlpp/sdlpp.hpp config.hpp custom_classes.hpp scenes.hpp global_vars.hpp functions.hpp
 	$(CXX) $(CFLAGS) -c -o $@ $<
@@ -23,6 +40,9 @@ libsdlpp.so: ../sdlpp
 	$(MAKE) -C ../sdlpp
 	cp ../sdlpp/libsdlpp.so .
 	ln -sf libsdlpp.so libsdlpp.so.1
+libsdlpp.dylib: ../sdlpp
+	$(MAKE) -C ../sdlpp
+	cp ../sdlpp/libsdlpp.dylib .
 
 start:
 	LD_LIBRARY_PATH=$$(pwd) ./tetris