lib: Switch to a 3-part version number for the library interface.

[notmuch] / lib / Makefile.local

diff --git a/lib/Makefile.local b/lib/Makefile.local
index b5182bc4cb0d650e9d298feb1d36f57d1ba6a706..0fd843a14296e74700ee8a6351c2431bd2f98368 100644 (file)
--- a/lib/Makefile.local
+++ b/lib/Makefile.local
@@ -1,19 +1,60 @@
-dir=lib
-
-lib_notmuch_modules =          \
-       $(dir)/database.o       \
-       $(dir)/index.o          \
-       $(dir)/$(dir)sha1.o     \
-       $(dir)/message.o        \
-       $(dir)/message-file.o   \
-       $(dir)/query.o          \
-       $(dir)/sha1.o           \
-       $(dir)/tags.o           \
-       $(dir)/thread.o         \
-       $(dir)/xutil.o
-
-$(dir)/notmuch.a: $(lib_notmuch_modules)
-       $(AR) rcs $@ $^
-
-SRCS  := $(SRCS) lib/*.c lib/*.cc
-CLEAN := $(CLEAN) $(dir)/*.o $(dir)/notmuch.a
+# The major version of the library interface. This will control the soname.
+# As such, this number must be incremented for any incompatible change to
+# the library interface, (such as the deletion of an API or a major
+# semantic change that breaks formerly functioning code).
+LIBNOTMUCH_VERSION_MAJOR = 1
+
+# The minor version of the library interface. This should be incremented at
+# the time of release for any additions to the library interface.
+LIBNOTMUCH_VERSION_MINOR = 0
+
+# The release version the library interface. This should be incremented at
+# the time of release if there have been no changes to the interface, (but
+# simply compatible changes to the implementation).
+LIBNOTMUCH_VERSION_RELEASE = 0
+
+LINKER_NAME = libnotmuch.so
+SONAME = $(LINKER_NAME).$(LIBNOTMUCH_VERSION_MAJOR)
+LIBNAME = $(SONAME).$(LIBNOTMUCH_VERSION_MINOR).$(LIBNOTMUCH_VERSION_RELEASE)
+
+dir := lib
+extra_cflags += -I$(dir) -fPIC
+
+libnotmuch_c_srcs =            \
+       $(dir)/libsha1.c        \
+       $(dir)/message-file.c   \
+       $(dir)/messages.c       \
+       $(dir)/sha1.c           \
+       $(dir)/tags.c           \
+       $(dir)/xutil.c
+
+libnotmuch_cxx_srcs =          \
+       $(dir)/database.cc      \
+       $(dir)/directory.cc     \
+       $(dir)/index.cc         \
+       $(dir)/message.cc       \
+       $(dir)/query.cc         \
+       $(dir)/thread.cc
+
+libnotmuch_modules = $(libnotmuch_c_srcs:.c=.o) $(libnotmuch_cxx_srcs:.cc=.o)
+
+$(dir)/$(LIBNAME) : $(libnotmuch_modules)
+       $(call quiet,CXX,$(LDFLAGS)) $^ $(FINAL_LDFLAGS) -shared -Wl,-soname=$(SONAME) -o $@
+
+$(dir)/$(SONAME): $(dir)/$(LIBNAME)
+       $(call quiet_symlink, $(LIBNAME) $@)
+
+$(dir)/$(LINKER_NAME): $(dir)/$(SONAME)
+       $(call quiet_symlink, $(LIBNAME) $@)
+
+install: install-$(dir)
+
+install-$(dir):
+       $(call quiet_mkdir, $(DESTDIR)$(libdir)/)
+       $(call quiet_install_data, $(dir)/$(LIBNAME) $(DESTDIR)$(libdir)/)
+       $(call quiet_symlink, $(LIBNAME) $(DESTDIR)$(libdir)/$(SONAME))
+       $(call quiet_symlink, $(LIBNAME) $(DESTDIR)$(libdir)/$(LINKER_NAME))
+       $(call quiet_install_data, $(dir)/notmuch.h $(DESTDIR)$(prefix)/include/)
+
+SRCS  := $(SRCS) $(libnotmuch_c_srcs) $(libnotmuch_cxx_srcs)
+CLEAN := $(CLEAN) $(libnotmuch_modules) $(dir)/$(SONAME) $(dir)/$(LINKER_NAME) $(dir)$(LIBNAME)