While you're making plans for 2013, would somebody please pay attention to the continuing lack of out-of-the-box support for versioned shared libraries?
I know of at least two projects that have rejected moving to SCons for this reason. It is quite a bit more important in the real world than (for example) D support. Here, once again, is my custom builder code solving this problem. If someone on the core teanm is willing to integrate this properly, I'll write the documentation for it. # Cope with scons's failure to set SONAME in its builtins. # Inspired by Richard Levitte's (slightly buggy) code at # http://markmail.org/message/spttz3o4xrsftofr def VersionedSharedLibrary(env, libname, version, lib_objs=[], parse_flags=[]): platform = env.subst('$PLATFORM') shlib_pre_action = None shlib_suffix = env.subst('$SHLIBSUFFIX') shlib_post_action = None shlink_flags = SCons.Util.CLVar(env.subst('$SHLINKFLAGS')) if platform == 'posix': ilib_suffix = shlib_suffix + '.' + version (major, age, revision) = version.split(".") soname = "lib" + libname + shlib_suffix + "." + major shlink_flags += [ '-Wl,-Bsymbolic', '-Wl,-soname=%s' % soname ] elif platform == 'cygwin': ilib_suffix = shlib_suffix shlink_flags += [ '-Wl,-Bsymbolic', '-Wl,--out-implib,${TARGET.base}.a' ] elif platform == 'darwin': ilib_suffix = '.' + version + shlib_suffix shlink_flags += [ '-current_version', '%s' % version, '-compatibility_version', '%s' % version, '-undefined', 'dynamic_lookup' ] ilib = env.SharedLibrary(libname,lib_objs, SHLIBSUFFIX=ilib_suffix, SHLINKFLAGS=shlink_flags, parse_flags=parse_flags) if platform == 'darwin': if version.count(".") != 2: # We need a library name in libfoo.x.y.z.dylib form to proceed raise ValueError lib = 'lib' + libname + '.' + version + '.dylib' lib_no_ver = 'lib' + libname + '.dylib' # Link libfoo.x.y.z.dylib to libfoo.dylib env.AddPostAction(ilib, 'rm -f %s; ln -s %s %s' % ( lib_no_ver, lib, lib_no_ver)) env.Clean(lib, lib_no_ver) elif platform == 'posix': if version.count(".") != 2: # We need a library name in libfoo.so.x.y.z form to proceed raise ValueError lib = "lib" + libname + ".so." + version suffix_re = '%s\\.[0-9\\.]*$' % re.escape(shlib_suffix) # For libfoo.so.x.y.z, links libfoo.so libfoo.so.x.y libfoo.so.x major_name = shlib_suffix + "." + lib.split(".")[2] minor_name = major_name + "." + lib.split(".")[3] for linksuffix in [shlib_suffix, major_name, minor_name]: linkname = re.sub(suffix_re, linksuffix, lib) env.AddPostAction(ilib, 'rm -f %s; ln -s %s %s' % ( linkname, lib, linkname)) env.Clean(lib, linkname) return ilib def VersionedSharedLibraryInstall(env, destination, libs): platform = env.subst('$PLATFORM') shlib_suffix = env.subst('$SHLIBSUFFIX') ilibs = env.Install(destination, libs) if platform == 'posix': suffix_re = '%s\\.[0-9\\.]*$' % re.escape(shlib_suffix) for lib in map(str, libs): if lib.count(".") != 4: # We need a library name in libfoo.so.x.y.z form to proceed raise ValueError # For libfoo.so.x.y.z, links libfoo.so libfoo.so.x.y libfoo.so.x major_name = shlib_suffix + "." + lib.split(".")[2] minor_name = major_name + "." + lib.split(".")[3] for linksuffix in [shlib_suffix, major_name, minor_name]: linkname = re.sub(suffix_re, linksuffix, lib) env.AddPostAction(ilibs, 'cd %s; rm -f %s; ln -s %s %s' % (destination, linkname, lib, linkname)) env.Clean(lib, linkname) return ilibs if not env["shared"]: def Library(env, target, sources, version, parse_flags=[]): return env.StaticLibrary(target, sources, parse_flags=parse_flags) LibraryInstall = lambda env, libdir, sources: env.Install(libdir, sources) else: def Library(env, target, sources, version, parse_flags=[]): return VersionedSharedLibrary(env=env, libname=target, version=version, lib_objs=sources, parse_flags=parse_flags) LibraryInstall = lambda env, libdir, sources: \ VersionedSharedLibraryInstall(env, libdir, sources) # Klugery to handle sonames ends -- <a href="http://www.catb.org/~esr/";>Eric S. Raymond</a> _______________________________________________ Scons-dev mailing list [email protected] http://two.pairlist.net/mailman/listinfo/scons-dev
