From 157124afc8830dee37cc9ca362f83732224d49e0 Mon Sep 17 00:00:00 2001
From: Richard Ipsum <richardipsum@fastmail.co.uk>
Date: Wed, 1 Nov 2017 13:14:04 +0000
Subject: Build on darwin

---
 Makefile | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/Makefile b/Makefile
index 1473d36..5f41bc8 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,7 @@ LIBCRYPT_C := lib/crypto/crypto_aesctr.c \
 
 INSTALL := /usr/bin/install
 SCRYPT_LIBS := -lscrypt
+OS := $(shell uname -s)
 
 override CFLAGS := $(CFLAGS) -O2 -Wall -fPIC
 
@@ -20,37 +21,42 @@ clean:
 	$(RM) -r html
 
 %.o: %.c
-	 $(CC) $(CFLAGS) -fPIC $(LUA51_INC) -c $< -o $@
+	 $(CC) $(CFLAGS) -fPIC $(LUA_INC) -c $< -o $@
+
+scrypt-%.so: luascrypt.c base64.c
+ifeq ($(OS),Darwin)
+	 $(CC) $(CFLAGS) $(LUA_INC) -dynamiclib -o $@ $^ $(SCRYPT_LIBS) -undefined dynamic_lookup
+else
+	 $(CC) $(CFLAGS) $(LUA_INC) -shared -o $@ $^ $(SCRYPT_LIBS)
+endif
 
 .PHONY: install
 install: lua-5.1-try-install lua-5.2-try-install
 
 .PHONY: lua-5.1
+lua-5.1: LUA_INC := $(LUA51_INC)
 lua-5.1: scrypt-5.1.so
 	 ln -s -f scrypt-5.1.so scrypt.so
 
 .PHONY: lua-5.1-install
+lua-5.1-install: LUA_INC := $(LUA51_INC)
 lua-5.1-install: INST_LIBDIR ?= $(DESTDIR)$(LUA51_CMOD_INST)
 lua-5.1-install: lua-5.1
 	 $(INSTALL) -d $(INST_LIBDIR)
 	 $(INSTALL) -m 755 scrypt-5.1.so $(INST_LIBDIR)/scrypt.so
 
-scrypt-5.1.so: luascrypt.c base64.c
-	 $(CC) $(CFLAGS) $(LUA51_INC) -shared -o $@ $^ $(SCRYPT_LIBS)
-
 .PHONY: lua-5.2
+lua-5.2: LUA_INC := $(LUA52_INC)
 lua-5.2: scrypt-5.2.so
 	 ln -s -f scrypt-5.2.so scrypt.so
 
 .PHONY: lua-5.2-install
+lua-5.2-install: LUA_INC := $(LUA52_INC)
 lua-5.2-install: INST_LIBDIR ?= $(DESTDIR)$(LUA52_CMOD_INST)
 lua-5.2-install: lua-5.2
 	 $(INSTALL) -d $(INST_LIBDIR)
 	 $(INSTALL) -m 755 scrypt-5.2.so $(INST_LIBDIR)/scrypt.so
 
-scrypt-5.2.so: luascrypt.c base64.c
-	 $(CC) $(CFLAGS) $(LUA52_INC) -shared -o $@ $^ $(SCRYPT_LIBS)
-
 .PHONY: doc
 doc:
 	@ldoc .
-- 
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