Add soversion to shared libraries.

diff --git a/Makefile b/Makefile
index 3d94f4d32aa6a26712b5b84e543c750da55565d5..bcb312f8dca8e7b7af64203c05e9f9669156c3a1 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,8 @@ STRIP        = $(CROSS_PREFIX)strip
 SHLIB        = $(CC) -shared
 STRIPLIB     = $(STRIP) --strip-unneeded
 
+SOVERSION    = 1
+
 CFLAGS += -O3 -Wall -pthread
 
 LIB1     = libpigpio.so
@@ -76,29 +78,34 @@ pig2vcd:    pig2vcd.o
        $(STRIP) pig2vcd
 
 clean:
-       rm -f *.o *.i *.s *~ $(ALL)
+       rm -f *.o *.i *.s *~ $(ALL) *.so.$(SOVERSION)
 
 install:       $(ALL)
-       install -m 0755 -d                $(DESTDIR)/opt/pigpio/cgi
-       install -m 0755 -d                $(DESTDIR)$(includedir)
-       install -m 0644 pigpio.h          $(DESTDIR)$(includedir)
-       install -m 0644 pigpiod_if.h      $(DESTDIR)$(includedir)
-       install -m 0644 pigpiod_if2.h     $(DESTDIR)$(includedir)
-       install -m 0755 -d                $(DESTDIR)$(libdir)
-       install -m 0755 libpigpio.so      $(DESTDIR)$(libdir)
-       install -m 0755 libpigpiod_if.so  $(DESTDIR)$(libdir)
-       install -m 0755 libpigpiod_if2.so $(DESTDIR)$(libdir)
-       install -m 0755 -d                $(DESTDIR)$(bindir)
-       install -m 0755 pig2vcd           $(DESTDIR)$(bindir)
-       install -m 0755 pigpiod           $(DESTDIR)$(bindir)
-       install -m 0755 pigs              $(DESTDIR)$(bindir)
+       install -m 0755 -d                             $(DESTDIR)/opt/pigpio/cgi
+       install -m 0755 -d                             $(DESTDIR)$(includedir)
+       install -m 0644 pigpio.h                       $(DESTDIR)$(includedir)
+       install -m 0644 pigpiod_if.h                   $(DESTDIR)$(includedir)
+       install -m 0644 pigpiod_if2.h                  $(DESTDIR)$(includedir)
+       install -m 0755 -d                             $(DESTDIR)$(libdir)
+       install -m 0755 libpigpio.so.$(SOVERSION)      $(DESTDIR)$(libdir)
+       install -m 0755 libpigpiod_if.so.$(SOVERSION)  $(DESTDIR)$(libdir)
+       install -m 0755 libpigpiod_if2.so.$(SOVERSION) $(DESTDIR)$(libdir)
+       cd $(DESTDIR)$(libdir) && ln -fs libpigpio.so.$(SOVERSION)      libpigpio.so
+       cd $(DESTDIR)$(libdir) && ln -fs libpigpiod_if.so.$(SOVERSION)  libpigpiod_if.so
+       cd $(DESTDIR)$(libdir) && ln -fs libpigpiod_if2.so.$(SOVERSION) libpigpiod_if2.so
+       install -m 0755 -d                             $(DESTDIR)$(bindir)
+       install -m 0755 pig2vcd                        $(DESTDIR)$(bindir)
+       install -m 0755 pigpiod                        $(DESTDIR)$(bindir)
+       install -m 0755 pigs                           $(DESTDIR)$(bindir)
        if which python2; then python2 setup.py install; fi
        if which python3; then python3 setup.py install; fi
-       install -m 0755 -d                $(DESTDIR)$(mandir)/man1
-       install -m 0644 *.1               $(DESTDIR)$(mandir)/man1
-       install -m 0755 -d                $(DESTDIR)$(mandir)/man3
-       install -m 0644 *.3               $(DESTDIR)$(mandir)/man3
+       install -m 0755 -d                             $(DESTDIR)$(mandir)/man1
+       install -m 0644 *.1                            $(DESTDIR)$(mandir)/man1
+       install -m 0755 -d                             $(DESTDIR)$(mandir)/man3
+       install -m 0644 *.3                            $(DESTDIR)$(mandir)/man3
+ifeq ($(DESTDIR),)
        ldconfig
+endif
 
 uninstall:
        rm -f $(DESTDIR)$(includedir)/pigpio.h
@@ -107,6 +114,9 @@ uninstall:
        rm -f $(DESTDIR)$(libdir)/libpigpio.so
        rm -f $(DESTDIR)$(libdir)/libpigpiod_if.so
        rm -f $(DESTDIR)$(libdir)/libpigpiod_if2.so
+       rm -f $(DESTDIR)$(libdir)/libpigpio.so.$(SOVERSION)
+       rm -f $(DESTDIR)$(libdir)/libpigpiod_if.so.$(SOVERSION)
+       rm -f $(DESTDIR)$(libdir)/libpigpiod_if2.so.$(SOVERSION)
        rm -f $(DESTDIR)$(bindir)/pig2vcd
        rm -f $(DESTDIR)$(bindir)/pigpiod
        rm -f $(DESTDIR)$(bindir)/pigs
@@ -117,17 +127,20 @@ uninstall:
        ldconfig
 
 $(LIB1):       $(OBJ1)
-       $(SHLIB) -o $(LIB1) $(OBJ1)
+       $(SHLIB) -Wl,-soname,$(LIB1).$(SOVERSION) -o $(LIB1).$(SOVERSION) $(OBJ1)
+       ln -fs $(LIB1).$(SOVERSION) $(LIB1)
        $(STRIPLIB) $(LIB1)
        $(SIZE)     $(LIB1)
 
 $(LIB2):       $(OBJ2)
-       $(SHLIB) -o $(LIB2) $(OBJ2)
+       $(SHLIB) -Wl,-soname,$(LIB2).$(SOVERSION) -o $(LIB2).$(SOVERSION) $(OBJ2)
+       ln -fs $(LIB2).$(SOVERSION) $(LIB2)
        $(STRIPLIB) $(LIB2)
        $(SIZE)     $(LIB2)
 
 $(LIB3):       $(OBJ3)
-       $(SHLIB) -o $(LIB3) $(OBJ3)
+       $(SHLIB) -Wl,-soname,$(LIB3).$(SOVERSION) -o $(LIB3).$(SOVERSION) $(OBJ3)
+       ln -fs $(LIB3).$(SOVERSION) $(LIB3)
        $(STRIPLIB) $(LIB3)
        $(SIZE)     $(LIB3)