| # This class is used to help the alternatives system which is useful when |
| # multiple sources provide same command. You can use update-alternatives |
| # command directly in your recipe, but in most cases this class simplifies |
| # that job. |
| # |
| # To use this class a number of variables should be defined: |
| # |
| # List all of the alternatives needed by a package: |
| # ALTERNATIVE_<pkg> = "name1 name2 name3 ..." |
| # |
| # i.e. ALTERNATIVE_busybox = "sh sed test bracket" |
| # |
| # The pathname of the link |
| # ALTERNATIVE_LINK_NAME[name] = "target" |
| # |
| # This is the name of the binary once it's been installed onto the runtime. |
| # This name is global to all split packages in this recipe, and should match |
| # other recipes with the same functionality. |
| # i.e. ALTERNATIVE_LINK_NAME[bracket] = "/usr/bin/[" |
| # |
| # NOTE: If ALTERNATIVE_LINK_NAME is not defined, it defaults to ${bindir}/name |
| # |
| # The default link to create for all targets |
| # ALTERNATIVE_TARGET = "target" |
| # |
| # This is useful in a multicall binary case |
| # i.e. ALTERNATIVE_TARGET = "/bin/busybox" |
| # |
| # A non-default link to create for a target |
| # ALTERNATIVE_TARGET[name] = "target" |
| # |
| # This is the name of the binary as it's been install by do_install |
| # i.e. ALTERNATIVE_TARGET[sh] = "/bin/bash" |
| # |
| # A package specific link for a target |
| # ALTERNATIVE_TARGET_<pkg>[name] = "target" |
| # |
| # This is useful when a recipe provides multiple alternatives for the |
| # same item. |
| # |
| # NOTE: If ALTERNATIVE_TARGET is not defined, it will inherit the value |
| # from ALTERNATIVE_LINK_NAME. |
| # |
| # NOTE: If the ALTERNATIVE_LINK_NAME and ALTERNATIVE_TARGET are the same, |
| # ALTERNATIVE_TARGET will have '.{BPN}' appended to it. If the file |
| # referenced has not been renamed, it will also be renamed. (This avoids |
| # the need to rename alternative files in the do_install step, but still |
| # supports it if necessary for some reason.) |
| # |
| # The default priority for any alternatives |
| # ALTERNATIVE_PRIORITY = "priority" |
| # |
| # i.e. default is ALTERNATIVE_PRIORITY = "10" |
| # |
| # The non-default priority for a specific target |
| # ALTERNATIVE_PRIORITY[name] = "priority" |
| # |
| # The package priority for a specific target |
| # ALTERNATIVE_PRIORITY_<pkg>[name] = "priority" |
| |
| ALTERNATIVE_PRIORITY = "10" |
| |
| # We need special processing for vardeps because it can not work on |
| # modified flag values. So we agregate the flags into a new variable |
| # and include that vairable in the set. |
| UPDALTVARS = "ALTERNATIVE ALTERNATIVE_LINK_NAME ALTERNATIVE_TARGET ALTERNATIVE_PRIORITY" |
| |
| def gen_updatealternativesvardeps(d): |
| pkgs = (d.getVar("PACKAGES", True) or "").split() |
| vars = (d.getVar("UPDALTVARS", True) or "").split() |
| |
| # First compute them for non_pkg versions |
| for v in vars: |
| for flag in (d.getVarFlags(v) or {}): |
| if flag == "doc" or flag == "vardeps" or flag == "vardepsexp": |
| continue |
| d.appendVar('%s_VARDEPS' % (v), ' %s:%s' % (flag, d.getVarFlag(v, flag, False))) |
| |
| for p in pkgs: |
| for v in vars: |
| for flag in (d.getVarFlags("%s_%s" % (v,p)) or {}): |
| if flag == "doc" or flag == "vardeps" or flag == "vardepsexp": |
| continue |
| d.appendVar('%s_VARDEPS_%s' % (v,p), ' %s:%s' % (flag, d.getVarFlag('%s_%s' % (v,p), flag, False))) |
| |
| def ua_extend_depends(d): |
| if not 'virtual/update-alternatives' in d.getVar('PROVIDES', True): |
| d.appendVar('DEPENDS', ' virtual/${MLPREFIX}update-alternatives') |
| |
| python __anonymous() { |
| # Update Alternatives only works on target packages... |
| if bb.data.inherits_class('native', d) or \ |
| bb.data.inherits_class('cross', d) or bb.data.inherits_class('crosssdk', d) or \ |
| bb.data.inherits_class('cross-canadian', d): |
| return |
| |
| # compute special vardeps |
| gen_updatealternativesvardeps(d) |
| |
| # extend the depends to include virtual/update-alternatives |
| ua_extend_depends(d) |
| } |
| |
| def gen_updatealternativesvars(d): |
| ret = [] |
| pkgs = (d.getVar("PACKAGES", True) or "").split() |
| vars = (d.getVar("UPDALTVARS", True) or "").split() |
| |
| for v in vars: |
| ret.append(v + "_VARDEPS") |
| |
| for p in pkgs: |
| for v in vars: |
| ret.append(v + "_" + p) |
| ret.append(v + "_VARDEPS_" + p) |
| return " ".join(ret) |
| |
| # Now the new stuff, we use a custom function to generate the right values |
| populate_packages[vardeps] += "${UPDALTVARS} ${@gen_updatealternativesvars(d)}" |
| |
| # We need to do the rename after the image creation step, but before |
| # the split and strip steps.. packagecopy seems to be the earliest reasonable |
| # place. |
| python perform_packagecopy_append () { |
| # Check for deprecated usage... |
| pn = d.getVar('BPN', True) |
| if d.getVar('ALTERNATIVE_LINKS', True) != None: |
| bb.fatal('%s: Use of ALTERNATIVE_LINKS/ALTERNATIVE_PATH/ALTERNATIVE_NAME is no longer supported, please convert to the updated syntax, see update-alternatives.bbclass for more info.' % pn) |
| |
| # Do actual update alternatives processing |
| pkgdest = d.getVar('PKGD', True) |
| for pkg in (d.getVar('PACKAGES', True) or "").split(): |
| # If the src == dest, we know we need to rename the dest by appending ${BPN} |
| link_rename = {} |
| for alt_name in (d.getVar('ALTERNATIVE_%s' % pkg, True) or "").split(): |
| alt_link = d.getVarFlag('ALTERNATIVE_LINK_NAME', alt_name, True) |
| if not alt_link: |
| alt_link = "%s/%s" % (d.getVar('bindir', True), alt_name) |
| d.setVarFlag('ALTERNATIVE_LINK_NAME', alt_name, alt_link) |
| |
| alt_target = d.getVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_TARGET', alt_name, True) |
| alt_target = alt_target or d.getVar('ALTERNATIVE_TARGET_%s' % pkg, True) or d.getVar('ALTERNATIVE_TARGET', True) or alt_link |
| # Sometimes alt_target is specified as relative to the link name. |
| alt_target = os.path.join(os.path.dirname(alt_link), alt_target) |
| |
| # If the link and target are the same name, we need to rename the target. |
| if alt_link == alt_target: |
| src = '%s/%s' % (pkgdest, alt_target) |
| alt_target_rename = '%s.%s' % (alt_target, pn) |
| dest = '%s/%s' % (pkgdest, alt_target_rename) |
| if os.path.lexists(dest): |
| bb.note('%s: Already renamed: %s' % (pn, alt_target_rename)) |
| elif os.path.lexists(src): |
| if os.path.islink(src): |
| # Delay rename of links |
| link_rename[alt_target] = alt_target_rename |
| else: |
| bb.note('%s: Rename %s -> %s' % (pn, alt_target, alt_target_rename)) |
| os.rename(src, dest) |
| else: |
| bb.warn("%s: alternative target (%s or %s) does not exist, skipping..." % (pn, alt_target, alt_target_rename)) |
| continue |
| d.setVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, alt_target_rename) |
| |
| # Process delayed link names |
| # Do these after other renames so we can correct broken links |
| for alt_target in link_rename: |
| src = '%s/%s' % (pkgdest, alt_target) |
| dest = '%s/%s' % (pkgdest, link_rename[alt_target]) |
| link = os.readlink(src) |
| link_target = oe.path.realpath(src, pkgdest, True) |
| |
| if os.path.lexists(link_target): |
| # Ok, the link_target exists, we can rename |
| bb.note('%s: Rename (link) %s -> %s' % (pn, alt_target, link_rename[alt_target])) |
| os.rename(src, dest) |
| else: |
| # Try to resolve the broken link to link.${BPN} |
| link_maybe = '%s.%s' % (os.readlink(src), pn) |
| if os.path.lexists(os.path.join(os.path.dirname(src), link_maybe)): |
| # Ok, the renamed link target exists.. create a new link, and remove the original |
| bb.note('%s: Creating new link %s -> %s' % (pn, link_rename[alt_target], link_maybe)) |
| os.symlink(link_maybe, dest) |
| os.unlink(src) |
| else: |
| bb.warn('%s: Unable to resolve dangling symlink: %s' % (pn, alt_target)) |
| } |
| |
| PACKAGESPLITFUNCS_prepend = "populate_packages_updatealternatives " |
| |
| python populate_packages_updatealternatives () { |
| pn = d.getVar('BPN', True) |
| |
| # Do actual update alternatives processing |
| pkgdest = d.getVar('PKGD', True) |
| for pkg in (d.getVar('PACKAGES', True) or "").split(): |
| # Create post install/removal scripts |
| alt_setup_links = "" |
| alt_remove_links = "" |
| for alt_name in (d.getVar('ALTERNATIVE_%s' % pkg, True) or "").split(): |
| alt_link = d.getVarFlag('ALTERNATIVE_LINK_NAME', alt_name, True) |
| alt_target = d.getVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_TARGET', alt_name, True) |
| alt_target = alt_target or d.getVar('ALTERNATIVE_TARGET_%s' % pkg, True) or d.getVar('ALTERNATIVE_TARGET', True) or alt_link |
| # Sometimes alt_target is specified as relative to the link name. |
| alt_target = os.path.join(os.path.dirname(alt_link), alt_target) |
| |
| alt_priority = d.getVarFlag('ALTERNATIVE_PRIORITY_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_PRIORITY', alt_name, True) |
| alt_priority = alt_priority or d.getVar('ALTERNATIVE_PRIORITY_%s' % pkg, True) or d.getVar('ALTERNATIVE_PRIORITY', True) |
| |
| # This shouldn't trigger, as it should have been resolved earlier! |
| if alt_link == alt_target: |
| bb.note('alt_link == alt_target: %s == %s -- correcting, this should not happen!' % (alt_link, alt_target)) |
| alt_target = '%s.%s' % (alt_target, pn) |
| |
| if not os.path.lexists('%s/%s' % (pkgdest, alt_target)): |
| bb.warn('%s: NOT adding alternative provide %s: %s does not exist' % (pn, alt_link, alt_target)) |
| continue |
| |
| # Default to generate shell script.. eventually we may want to change this... |
| alt_target = os.path.normpath(alt_target) |
| |
| alt_setup_links += '\tupdate-alternatives --install %s %s %s %s\n' % (alt_link, alt_name, alt_target, alt_priority) |
| alt_remove_links += '\tupdate-alternatives --remove %s %s\n' % (alt_name, alt_target) |
| |
| if alt_setup_links: |
| # RDEPENDS setup |
| provider = d.getVar('VIRTUAL-RUNTIME_update-alternatives', True) |
| if provider: |
| #bb.note('adding runtime requirement for update-alternatives for %s' % pkg) |
| d.appendVar('RDEPENDS_%s' % pkg, ' ' + d.getVar('MLPREFIX', False) + provider) |
| |
| bb.note('adding update-alternatives calls to postinst/prerm for %s' % pkg) |
| bb.note('%s' % alt_setup_links) |
| postinst = d.getVar('pkg_postinst_%s' % pkg, True) or '#!/bin/sh\n' |
| postinst += alt_setup_links |
| d.setVar('pkg_postinst_%s' % pkg, postinst) |
| |
| bb.note('%s' % alt_remove_links) |
| prerm = d.getVar('pkg_prerm_%s' % pkg, True) or '#!/bin/sh\n' |
| prerm += alt_remove_links |
| d.setVar('pkg_prerm_%s' % pkg, prerm) |
| } |
| |
| python package_do_filedeps_append () { |
| pn = d.getVar('BPN', True) |
| pkgdest = d.getVar('PKGDEST', True) |
| |
| for pkg in packages.split(): |
| for alt_name in (d.getVar('ALTERNATIVE_%s' % pkg, True) or "").split(): |
| alt_link = d.getVarFlag('ALTERNATIVE_LINK_NAME', alt_name, True) |
| alt_target = d.getVarFlag('ALTERNATIVE_TARGET_%s' % pkg, alt_name, True) or d.getVarFlag('ALTERNATIVE_TARGET', alt_name, True) |
| alt_target = alt_target or d.getVar('ALTERNATIVE_TARGET_%s' % pkg, True) or d.getVar('ALTERNATIVE_TARGET', True) or alt_link |
| |
| if alt_link == alt_target: |
| bb.warn('alt_link == alt_target: %s == %s' % (alt_link, alt_target)) |
| alt_target = '%s.%s' % (alt_target, pn) |
| |
| if not os.path.lexists('%s/%s/%s' % (pkgdest, pkg, alt_target)): |
| continue |
| |
| # Add file provide |
| trans_target = oe.package.file_translate(alt_target) |
| d.appendVar('FILERPROVIDES_%s_%s' % (trans_target, pkg), " " + alt_link) |
| if not trans_target in (d.getVar('FILERPROVIDESFLIST_%s' % pkg, True) or ""): |
| d.appendVar('FILERPROVIDESFLIST_%s' % pkg, " " + trans_target) |
| } |
| |