5 files changed, 27 insertions, 8 deletions
diff --git a/Makefile b/Makefile
index 00aa644..7adb022 100644
--- a/Makefile
+++ b/Makefile
@@ -1,16 +1,23 @@
 .POSIX:
 
+CONFIGFILE = config.mk
+include $(CONFIGFILE)
+
+OS = linux
+# Linux:   linux
+# Mac OS:  macos
+# Windows: windows
+include mk/$(OS).mk
+
+
 LIB_MAJOR = 1
 LIB_MINOR = 2
 LIB_VERSION = $(LIB_MAJOR).$(LIB_MINOR)
 
-CONFIGFILE = config.mk
-OSCONFIGFILE = linux.mk
 
-include $(CONFIGFILE)
-include $(OSCONFIGFILE)
 include man.mk
 
+
 all: libcoopgamma.a libcoopgamma.$(LIBEXT) test
 
 .c.o:
@@ -41,6 +48,7 @@ install: libcoopgamma.a libcoopgamma.$(LIBEXT)
 	cp -- libcoopgamma.h "$(DESTDIR)$(PREFIX)/include"
 	cp -- libcoopgamma.a "$(DESTDIR)$(PREFIX)/lib"
 	cp -- libcoopgamma.$(LIBEXT) "$(DESTDIR)$(PREFIX)/lib/libcoopgamma.$(LIBMINOREXT)"
+	$(FIX_INSTALL_NAME) "$(DESTDIR)$(PREFIX)/lib/libcoopgamma.$(LIBMINOREXT)"
 	ln -sf -- libcoopgamma.$(LIBMINOREXT) "$(DESTDIR)$(PREFIX)/lib/libcoopgamma.$(LIBMAJOREXT)"
 	ln -sf -- libcoopgamma.$(LIBMINOREXT) "$(DESTDIR)$(PREFIX)/lib/libcoopgamma.$(LIBEXT)"
 	cp -- $(MAN0) "$(DESTDIR)$(MANPREFIX)/man0"
diff --git a/config.mk b/config.mk
index 69a0595..86557c9 100644
--- a/config.mk
+++ b/config.mk
@@ -1,8 +1,8 @@
 PREFIX = /usr
 MANPREFIX = $(PREFIX)/share/man
 
-CC = cc
+CC = c99
 
 CPPFLAGS = -D_DEFAULT_SOURCE -D_GNU_SOURCE
-CFLAGS   = -std=c99 -Wall -O2
+CFLAGS   = -Wall -O2
 LDFLAGS  = -s
diff --git a/linux.mk b/mk/linux.mk
index 5b97157..b60a770 100644
--- a/linux.mk
+++ b/mk/linux.mk
@@ -3,3 +3,5 @@ LIBFLAGS = -shared -Wl,-soname,libcoopgamma.$(LIBEXT).$(LIB_MAJOR)
 
 LIBMAJOREXT = $(LIBEXT).$(LIB_MAJOR)
 LIBMINOREXT = $(LIBEXT).$(LIB_VERSION)
+
+FIX_INSTALL_NAME = :
diff --git a/mk/macos.mk b/mk/macos.mk
new file mode 100644
index 0000000..23a264d
--- /dev/null
+++ b/mk/macos.mk
@@ -0,0 +1,7 @@
+LIBEXT = dylib
+LIBFLAGS = -dynamiclib -Wl,-compatibility_version,$(LIB_MAJOR) -Wl,-current_version,$(LIB_VERSION)
+
+LIBMAJOREXT = $(LIB_MAJOR).$(LIBEXT)
+LIBMINOREXT = $(LIB_VERSION).$(LIBEXT)
+
+FIX_INSTALL_NAME = install_name_tool -id "$(PREFIX)/lib/libcoopgamma.$(LIBMAJOREXT)"
diff --git a/macos.mk b/mk/windows.mk
index b475197..88c99dd 100644
--- a/macos.mk
+++ b/mk/windows.mk
@@ -1,5 +1,7 @@
-LIBEXT = dylib
-LIBFLAGS = -dynamiclib
+LIBEXT = dll
+LIBFLAGS = -shared
 
 LIBMAJOREXT = $(LIB_MAJOR).$(LIBEXT)
 LIBMINOREXT = $(LIB_VERSION).$(LIBEXT)
+
+FIX_INSTALL_NAME = :