[RFC weston 4/4] WIP: libweston: rework versioning scheme

[Emil Velikov]

From: Emil Velikov <emil.velikov at collabora.com>

Use libweston-$major.so.0.$minor.$patch over the current scheme.

It allows for separation (distinction) of the backwards incompatible
changes from forward compatible feature/bugfix ones.

TODO:
 - Check if we need the - at LIBWESTON_VERSION_MAJOR@ headers changes.
 - Check where do we want to use @foo@, ${foo} and $(foo).

Signed-off-by: Emil Velikov <emil.l.velikov at gmail.com>
---
 Makefile.am  | 27 ++++++++++++++-------------
 configure.ac |  8 ++++++--
 2 files changed, 20 insertions(+), 15 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index d1d2178..99c5bfe 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -5,7 +5,7 @@ noinst_PROGRAMS =
 libexec_PROGRAMS =
 moduledir = $(libdir)/weston
 module_LTLIBRARIES =
-libweston_moduledir = $(libdir)/libweston-${LIBWESTON_ABI_VERSION}
+libweston_moduledir = $(libdir)/libweston-$(LIBWESTON_VERSION_MAJOR)
 libweston_module_LTLIBRARIES =
 noinst_LTLIBRARIES =
 BUILT_SOURCES =
@@ -61,15 +61,16 @@ CLEANFILES = weston.ini				\
 	internal-screenshot-00.png		\
 	$(BUILT_SOURCES)
 
-lib_LTLIBRARIES = libweston.la
-libweston_la_CPPFLAGS = $(AM_CPPFLAGS) -DIN_WESTON
-libweston_la_CFLAGS = $(AM_CFLAGS) $(COMPOSITOR_CFLAGS) $(LIBUNWIND_CFLAGS)
-libweston_la_LIBADD = $(COMPOSITOR_LIBS) $(LIBUNWIND_LIBS) \
+lib_LTLIBRARIES = libweston- at LIBWESTON_VERSION_MAJOR@.la
+libweston_ at LIBWESTON_VERSION_MAJOR@_la_CPPFLAGS = $(AM_CPPFLAGS) -DIN_WESTON
+libweston_ at LIBWESTON_VERSION_MAJOR@_la_CFLAGS = $(AM_CFLAGS) $(COMPOSITOR_CFLAGS) $(LIBUNWIND_CFLAGS)
+libweston_ at LIBWESTON_VERSION_MAJOR@_la_LIBADD = $(COMPOSITOR_LIBS) $(LIBUNWIND_LIBS) \
 	$(DLOPEN_LIBS) -lm $(CLOCK_GETTIME_LIBS) \
 	$(LIBINPUT_BACKEND_LIBS) libshared.la
-libweston_la_LDFLAGS = -release ${LIBWESTON_ABI_VERSION}
+libweston_ at LIBWESTON_VERSION_MAJOR@_la_LDFLAGS = -version-info 0:$(LIBWESTON_VERSION_MICRO):$(LIBWESTON_VERSION_PATCH)
 
-libweston_la_SOURCES =					\
+
+libweston_ at LIBWESTON_VERSION_MAJOR@_la_SOURCES =					\
 	src/git-version.h				\
 	src/log.c					\
 	src/compositor.c				\
@@ -119,7 +120,7 @@ systemd_notify_la_SOURCES =			\
 	src/compositor.h
 endif
 
-nodist_libweston_la_SOURCES =					\
+nodist_libweston_ at LIBWESTON_VERSION_MAJOR@_la_SOURCES =					\
 	protocol/weston-screenshooter-protocol.c			\
 	protocol/weston-screenshooter-server-protocol.h			\
 	protocol/text-cursor-position-protocol.c	\
@@ -135,7 +136,7 @@ nodist_libweston_la_SOURCES =					\
 	protocol/linux-dmabuf-unstable-v1-protocol.c	\
 	protocol/linux-dmabuf-unstable-v1-server-protocol.h
 
-BUILT_SOURCES += $(nodist_libweston_la_SOURCES)
+BUILT_SOURCES += $(nodist_libweston_ at LIBWESTON_VERSION_MAJOR@_la_SOURCES)
 
 bin_PROGRAMS += weston
 
@@ -145,7 +146,7 @@ weston_CPPFLAGS = $(AM_CPPFLAGS) -DIN_WESTON 		\
 weston_CFLAGS = $(AM_CFLAGS) $(COMPOSITOR_CFLAGS) $(LIBUNWIND_CFLAGS)
 weston_LDADD = $(COMPOSITOR_LIBS) $(LIBUNWIND_LIBS) \
 	$(DLOPEN_LIBS) $(LIBINPUT_BACKEND_LIBS) \
-	-lm libshared.la libweston.la
+	-lm libshared.la libweston- at LIBWESTON_VERSION_MAJOR@.la
 
 weston_SOURCES = 					\
 	src/main.c					\
@@ -220,13 +221,13 @@ endif
 endif # BUILD_WESTON_LAUNCH
 
 pkgconfigdir = $(libdir)/pkgconfig
-pkgconfig_DATA = src/weston.pc src/libweston-${LIBWESTON_ABI_VERSION}.pc
+pkgconfig_DATA = src/weston.pc src/libweston- at LIBWESTON_VERSION_MAJOR@.pc
 
 wayland_sessiondir = $(datadir)/wayland-sessions
 dist_wayland_session_DATA = src/weston.desktop
 
-libwestonincludedir = $(includedir)/libweston-${LIBWESTON_ABI_VERSION}
-libwestoninclude_HEADERS =				\
+libweston_ at LIBWESTON_VERSION_MAJOR@includedir = $(includedir)/libweston-$(LIBWESTON_VERSION_MAJOR)
+libweston_ at LIBWESTON_VERSION_MAJOR@include_HEADERS =				\
 	src/version.h				\
 	src/compositor.h			\
 	src/compositor-drm.h			\
diff --git a/configure.ac b/configure.ac
index 2be2277..78457be 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3,7 +3,9 @@ m4_define([weston_minor_version], [11])
 m4_define([weston_micro_version], [90])
 m4_define([weston_version],
           [weston_major_version.weston_minor_version.weston_micro_version])
-m4_define([libweston_abi_version], [0])
+m4_define([libweston_major_version], [0])
+m4_define([libweston_minor_version], [0])
+m4_define([libweston_micro_version], [0])
 
 AC_PREREQ([2.64])
 AC_INIT([weston],
@@ -18,7 +20,9 @@ AC_SUBST([WESTON_VERSION_MAJOR], [weston_major_version])
 AC_SUBST([WESTON_VERSION_MINOR], [weston_minor_version])
 AC_SUBST([WESTON_VERSION_MICRO], [weston_micro_version])
 AC_SUBST([WESTON_VERSION], [weston_version])
-AC_SUBST([LIBWESTON_ABI_VERSION], [libweston_abi_version])
+AC_SUBST([LIBWESTON_VERSION_MAJOR], [libweston_major_version])
+AC_SUBST([LIBWESTON_VERSION_MINOR], [libweston_minor_version])
+AC_SUBST([LIBWESTON_VERSION_MICRO], [libweston_micro_version])
 
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_HEADERS([config.h])
-- 
2.8.2