From 1af6acb23d4b00f02a6b520562258e8bb7e38d2b Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sat, 19 Feb 2022 21:05:57 +0100
Subject: Improve makefile
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 Makefile      | 60 ++++++++++++++++++++++++++++++++++++++---------------------
 config.mk     |  4 ++--
 mk/linux.mk   |  7 +++++++
 mk/macos.mk   |  7 +++++++
 mk/windows.mk |  7 +++++++
 5 files changed, 62 insertions(+), 23 deletions(-)
 create mode 100644 mk/linux.mk
 create mode 100644 mk/macos.mk
 create mode 100644 mk/windows.mk

diff --git a/Makefile b/Makefile
index ac15b3a..ffa9da4 100644
--- a/Makefile
+++ b/Makefile
@@ -3,51 +3,69 @@
 CONFIGFILE = config.mk
 include $(CONFIGFILE)
 
-VERSION_MAJOR = 1
-VERSION       = 1.2
+OS = linux
+# Linux:   linux
+# Mac OS:  macos
+# Windows: windows 
+include mk/$(OS).mk
 
 
-all: libclut.a libclut.so test
+LIB_MAJOR = 1
+LIB_MINOR = 0
+LIB_VERSION = $(LIB_MAJOR).$(LIB_MINOR)
 
-libclut.o: libclut.c libclut.h
-	$(CC) -c -o $@ libclut.c $(CPPFLAGS) $(CFLAGS)
 
-libclut.lo: libclut.c libclut.h
-	$(CC) -fPIC -c -o $@ libclut.c $(CPPFLAGS) $(CFLAGS)
+HDR = libclut.h
+OBJ = libclut.o
 
-libclut.a: libclut.o
-	$(AR) rc $@ libclut.o
-	$(AR) s $@
+LOBJ = $(OBJ:.o=.lo)
 
-libclut.so: libclut.lo
-	$(CC) -shared -Wl,-soname,libclut.so.$(VERSION_MAJOR) -o $@ $(LDFLAGS) libclut.lo
 
-test.o: test.c libclut.h
-	$(CC) -c -o $@ test.c $(CPPFLAGS) $(CFLAGS)
+all: libclut.a libclut.$(LIBEXT) test
+$(OBJ): $(HDR)
+$(LOBJ): $(HDR)
+
+.c.o:
+	$(CC) -c -o $@ $< $(CFLAGS) $(CPPFLAGS)
+
+.c.lo:
+	$(CC) -fPIC -c -o $@ $< $(CFLAGS) $(CPPFLAGS)
 
 test: test.o libclut.a
 	$(CC) -o $@ test.o libclut.a $(LDFLAGS)
 
+libclut.$(LIBEXT): $(LOBJ)
+	$(CC) $(LIBFLAGS) -o $@ $(LOBJ) $(LDFLAGS)
+
+libclut.a: $(OBJ)
+	-rm -f -- $@
+	$(AR) rc $@ $(OBJ)
+	$(AR) -s $@
+
 check: test
 	./test
 
-install: libclut.a libclut.so
+install: libclut.a libclut.$(LIBEXT)
 	mkdir -p -- "$(DESTDIR)$(PREFIX)/lib"
 	mkdir -p -- "$(DESTDIR)$(PREFIX)/include"
 	cp -- libclut.a "$(DESTDIR)$(PREFIX)/lib"
-	cp -- libclut.so "$(DESTDIR)$(PREFIX)/lib/libclut.so.$(VERSION_MAJOR)"
-	ln -sf -- libclut.so.$(VERSION_MAJOR) "$(DESTDIR)$(PREFIX)/lib/libclut.so.$(VERSION)"
-	ln -sf -- libclut.so.$(VERSION_MAJOR) "$(DESTDIR)$(PREFIX)/lib/libclut.so"
+	cp -- libclut.so "$(DESTDIR)$(PREFIX)/lib/libclut.$(LIBMINOREXT)"
+	$(FIX_INSTALL_NAME) -- "$(DESTDIR)$(PREFIX)/lib/libclut.$(LIBMINOREXT)"
+	ln -sf -- "libclut.$(LIBMINOREXT)" "$(DESTDIR)$(PREFIX)/lib/libclut.$(LIBMAJOREXT)"
+	ln -sf -- "libclut.$(LIBMINOREXT)" "$(DESTDIR)$(PREFIX)/lib/libclut.$(LIBEXT)"
 	cp -- libclut.h "$(DESTDIR)$(PREFIX)/include"
 
 uninstall:
 	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libclut.a"
-	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libclut.so.$(VERSION_MAJOR)"
-	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libclut.so.$(VERSION)"
-	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libclut.so"
+	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libclut.so.$(LIBEXT)"
+	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libclut.so.$(LIBMAJOREXT)"
+	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libclut.so.$(LIBMINOREXT)"
 	-rm -f -- "$(DESTDIR)$(PREFIX)/include/libclut.h"
 
 clean:
 	-rm -f -- *.o *.a *.so *.lo *.su test
 
+.SUFFIXES:
+.SUFFIXES: .lo .o .c
+
 .PHONY: all check install uninstall clean
diff --git a/config.mk b/config.mk
index 9b1bc39..9aa4de7 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_BSD_SOURCE -D_XOPEN_SOURCE=700 -D_GNU_SOURCE
-CFLAGS   = -std=c99 -Wall -O2
+CFLAGS   = -Wall -O2
 LDFLAGS  = -lm -s
diff --git a/mk/linux.mk b/mk/linux.mk
new file mode 100644
index 0000000..37ce5a6
--- /dev/null
+++ b/mk/linux.mk
@@ -0,0 +1,7 @@
+LIBEXT   = so
+LIBFLAGS = -shared -Wl,-soname,libclut.$(LIBEXT).$(LIB_MAJOR)
+
+LIBMAJOREXT = $(LIBEXT).$(LIB_MAJOR)
+LIBMINOREXT = $(LIBEXT).$(LIB_MAJOR).$(LIB_MINOR)
+
+FIX_INSTALL_NAME = :
diff --git a/mk/macos.mk b/mk/macos.mk
new file mode 100644
index 0000000..c5636bf
--- /dev/null
+++ b/mk/macos.mk
@@ -0,0 +1,7 @@
+LIBEXT   = dylib
+LIBFLAGS = -dynamiclib -Wl,-compatibility_version,$(LIB_MAJOR) -Wl,-current_version,$(LIB_VERSION)
+
+LIBMAJOREXT = $(LIB_MAJOR).$(LIBEXT)
+LIBMINOREXT = $(LIB_MAJOR).$(LIB_MINOR).$(LIBEXT)
+
+FIX_INSTALL_NAME = install_name_tool -id "$(PREFIX)/lib/libclut.$(LIBMAJOREXT)"
diff --git a/mk/windows.mk b/mk/windows.mk
new file mode 100644
index 0000000..304b6be
--- /dev/null
+++ b/mk/windows.mk
@@ -0,0 +1,7 @@
+LIBEXT   = dll
+LIBFLAGS = -shared
+
+LIBMAJOREXT = $(LIB_MAJOR).$(LIBEXT)
+LIBMINOREXT = $(LIB_MAJOR).$(LIB_MINOR).$(LIBEXT)
+
+FIX_INSTALL_NAME = :
-- 
cgit v1.2.3-70-g09d2