From 9c68f09356974511f622207d7cc96b20a175fcf2 Mon Sep 17 00:00:00 2001
From: Mattias Andrée <maandree@kth.se>
Date: Sat, 17 Apr 2021 13:05:22 +0200
Subject: Add dynamically linked version of library
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Signed-off-by: Mattias Andrée <maandree@kth.se>
---
 Makefile      | 30 ++++++++++++++++++++++++++----
 mk/linux.mk   |  4 ++++
 mk/macos.mk   |  4 ++++
 mk/windows.mk |  4 ++++
 4 files changed, 38 insertions(+), 4 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 0b424bd..490ce9a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,11 +1,24 @@
 .POSIX:
 
+LIB_MAJOR = 1
+LIB_MINOR = 0
+LIB_VERSION = $(LIB_MAJOR).$(LIB_MINOR)
+
+
 CONFIGFILE = config.mk
 include $(CONFIGFILE)
 
+OS = linux
+# Linux:   linux
+# Mac OS:  macos
+# Windows: windows
+include mk/$(OS).mk
+
 
-all: libparser.a libparser-generate calc-example/calc
+
+all: libparser.a libparser.$(LIBEXT) libparser-generate calc-example/calc
 libparser.o: libparser.c libparser.h
+libparser.lo: libparser.c libparser.h
 calc-example/calc-syntax.o: calc-example/calc-syntax.c libparser.h
 
 .c.o:
@@ -21,28 +34,37 @@ libparser.a: libparser.o
 	$(AR) rc $@ libparser.o
 	$(AR) -s $@
 
+libparser.$(LIBEXT): libparser.lo
+	$(CC) $(LIBFLAGS) -o $@ libparser.lo $(LDFLAGS)
+
 calc-example/calc: calc-example/calc.o calc-example/calc-syntax.o libparser.a
 	$(CC) -o $@ calc-example/calc.o calc-example/calc-syntax.o libparser.a $(LDFLAGS)
 
 calc-example/calc-syntax.c: libparser-generate calc-example/calc.syntax
 	./libparser-generate _expr < calc-example/calc.syntax > $@
 
-install: libparser.a libparser-generate
+install: libparser.a libparser.$(LIBEXT) libparser-generate
 	mkdir -p -- "$(DESTDIR)$(PREFIX)/bin"
 	mkdir -p -- "$(DESTDIR)$(PREFIX)/lib"
 	mkdir -p -- "$(DESTDIR)$(PREFIX)/include"
 	cp -- libparser-generate "$(DESTDIR)$(PREFIX)/bin"
 	cp -- libparser.a "$(DESTDIR)$(PREFIX)/lib"
+	cp -- libparser.$(LIBEXT) "$(DESTDIR)$(PREFIX)/lib/libparser.$(LIBMINOREXT)"
+	ln -sf -- libparser.$(LIBMINOREXT) "$(DESTDIR)$(PREFIX)/lib/libparser.$(LIBMAJOREXT)"
+	ln -sf -- libparser.$(LIBMAJOREXT) "$(DESTDIR)$(PREFIX)/lib/libparser.$(LIBEXT)"
 	cp -- libparser.h "$(DESTDIR)$(PREFIX)/include"
 
 uninstall:
 	-rm -f -- "$(DESTDIR)$(PREFIX)/bin/libparser-generate"
 	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libparser.a"
+	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libparser.$(LIBMAJOREXT)"
+	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libparser.$(LIBMINOREXT)"
+	-rm -f -- "$(DESTDIR)$(PREFIX)/lib/libparser.$(LIBEXT)"
 	-rm -f -- "$(DESTDIR)$(PREFIX)/include/libparser.h"
 
 clean:
-	-rm -f -- *.o *.lo *.a *.so *.su *-example/*.o *-example/*.su *-example/*-syntax.c libparser-generate
-	-rm -f -- calc-example/calc
+	-rm -f -- *.o *.lo *.a *.so *.su *.dylib *.dll *-example/*.o *-example/*.su *-example/*-syntax.c
+	-rm -f -- libparser-generate calc-example/calc
 
 .SUFFIXES:
 .SUFFIXES: .c .o .lo
diff --git a/mk/linux.mk b/mk/linux.mk
new file mode 100644
index 0000000..bafa31c
--- /dev/null
+++ b/mk/linux.mk
@@ -0,0 +1,4 @@
+LIBEXT      = so
+LIBFLAGS    = -shared -Wl,-soname,libparser.$(LIBEXT).$(LIB_MAJOR)
+LIBMAJOREXT = $(LIBEXT).$(LIB_MAJOR)
+LIBMINOREXT = $(LIBEXT).$(LIB_VERSION)
diff --git a/mk/macos.mk b/mk/macos.mk
new file mode 100644
index 0000000..bd92de6
--- /dev/null
+++ b/mk/macos.mk
@@ -0,0 +1,4 @@
+LIBEXT      = dylib
+LIBFLAGS    = -dynamiclib
+LIBMAJOREXT = $(LIB_MAJOR).$(LIBEXT)
+LIBMINOREXT = $(LIB_VERSION).$(LIBEXT)
diff --git a/mk/windows.mk b/mk/windows.mk
new file mode 100644
index 0000000..e9602e1
--- /dev/null
+++ b/mk/windows.mk
@@ -0,0 +1,4 @@
+LIBEXT      = dll
+LIBFLAGS    = -mdll
+LIBMAJOREXT = $(LIB_MAJOR).$(LIBEXT)
+LIBMINOREXT = $(LIB_VERSION).$(LIBEXT)
-- 
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