| # Copyright (C) 2012 Linux Foundation |
| # Author: Richard Purdie |
| # Some code and influence taken from srctree.bbclass: |
| # Copyright (C) 2009 Chris Larson <clarson@kergoth.com> |
| # Released under the MIT license (see COPYING.MIT for the terms) |
| # |
| # externalsrc.bbclass enables use of an existing source tree, usually external to |
| # the build system to build a piece of software rather than the usual fetch/unpack/patch |
| # process. |
| # |
| # To use, add externalsrc to the global inherit and set EXTERNALSRC to point at the |
| # directory you want to use containing the sources e.g. from local.conf for a recipe |
| # called "myrecipe" you would do: |
| # |
| # INHERIT += "externalsrc" |
| # EXTERNALSRC_pn-myrecipe = "/path/to/my/source/tree" |
| # |
| # In order to make this class work for both target and native versions (or with |
| # multilibs/cross or other BBCLASSEXTEND variants), B is set to point to a separate |
| # directory under the work directory (split source and build directories). This is |
| # the default, but the build directory can be set to the source directory if |
| # circumstances dictate by setting EXTERNALSRC_BUILD to the same value, e.g.: |
| # |
| # EXTERNALSRC_BUILD_pn-myrecipe = "/path/to/my/source/tree" |
| # |
| |
| SRCTREECOVEREDTASKS ?= "do_patch do_unpack do_fetch" |
| EXTERNALSRC_SYMLINKS ?= "oe-workdir:${WORKDIR} oe-logs:${T}" |
| |
| python () { |
| externalsrc = d.getVar('EXTERNALSRC') |
| |
| # If this is the base recipe and EXTERNALSRC is set for it or any of its |
| # derivatives, then enable BB_DONT_CACHE to force the recipe to always be |
| # re-parsed so that the file-checksums function for do_compile is run every |
| # time. |
| bpn = d.getVar('BPN') |
| if bpn == d.getVar('PN'): |
| classextend = (d.getVar('BBCLASSEXTEND') or '').split() |
| if (externalsrc or |
| ('native' in classextend and |
| d.getVar('EXTERNALSRC_pn-%s-native' % bpn)) or |
| ('nativesdk' in classextend and |
| d.getVar('EXTERNALSRC_pn-nativesdk-%s' % bpn)) or |
| ('cross' in classextend and |
| d.getVar('EXTERNALSRC_pn-%s-cross' % bpn))): |
| d.setVar('BB_DONT_CACHE', '1') |
| |
| if externalsrc: |
| d.setVar('S', externalsrc) |
| externalsrcbuild = d.getVar('EXTERNALSRC_BUILD') |
| if externalsrcbuild: |
| d.setVar('B', externalsrcbuild) |
| else: |
| d.setVar('B', '${WORKDIR}/${BPN}-${PV}/') |
| |
| local_srcuri = [] |
| fetch = bb.fetch2.Fetch((d.getVar('SRC_URI') or '').split(), d) |
| for url in fetch.urls: |
| url_data = fetch.ud[url] |
| parm = url_data.parm |
| if (url_data.type == 'file' or |
| 'type' in parm and parm['type'] == 'kmeta'): |
| local_srcuri.append(url) |
| |
| d.setVar('SRC_URI', ' '.join(local_srcuri)) |
| |
| if '{SRCPV}' in d.getVar('PV', False): |
| # Dummy value because the default function can't be called with blank SRC_URI |
| d.setVar('SRCPV', '999') |
| |
| tasks = filter(lambda k: d.getVarFlag(k, "task"), d.keys()) |
| |
| for task in tasks: |
| if task.endswith("_setscene"): |
| # sstate is never going to work for external source trees, disable it |
| bb.build.deltask(task, d) |
| else: |
| # Since configure will likely touch ${S}, ensure only we lock so one task has access at a time |
| d.appendVarFlag(task, "lockfiles", " ${S}/singletask.lock") |
| |
| # We do not want our source to be wiped out, ever (kernel.bbclass does this for do_clean) |
| cleandirs = (d.getVarFlag(task, 'cleandirs', False) or '').split() |
| setvalue = False |
| for cleandir in cleandirs[:]: |
| if d.expand(cleandir) == externalsrc: |
| cleandirs.remove(cleandir) |
| setvalue = True |
| if setvalue: |
| d.setVarFlag(task, 'cleandirs', ' '.join(cleandirs)) |
| |
| fetch_tasks = ['do_fetch', 'do_unpack'] |
| # If we deltask do_patch, there's no dependency to ensure do_unpack gets run, so add one |
| # Note that we cannot use d.appendVarFlag() here because deps is expected to be a list object, not a string |
| d.setVarFlag('do_configure', 'deps', (d.getVarFlag('do_configure', 'deps', False) or []) + ['do_unpack']) |
| |
| for task in d.getVar("SRCTREECOVEREDTASKS").split(): |
| if local_srcuri and task in fetch_tasks: |
| continue |
| bb.build.deltask(task, d) |
| |
| d.prependVarFlag('do_compile', 'prefuncs', "externalsrc_compile_prefunc ") |
| d.prependVarFlag('do_configure', 'prefuncs', "externalsrc_configure_prefunc ") |
| |
| d.setVarFlag('do_compile', 'file-checksums', '${@srctree_hash_files(d)}') |
| d.setVarFlag('do_configure', 'file-checksums', '${@srctree_configure_hash_files(d)}') |
| |
| # We don't want the workdir to go away |
| d.appendVar('RM_WORK_EXCLUDE', ' ' + d.getVar('PN')) |
| |
| bb.build.addtask('do_buildclean', |
| 'do_clean' if d.getVar('S') == d.getVar('B') else None, |
| None, d) |
| |
| # If B=S the same builddir is used even for different architectures. |
| # Thus, use a shared CONFIGURESTAMPFILE and STAMP directory so that |
| # change of do_configure task hash is correctly detected and stamps are |
| # invalidated if e.g. MACHINE changes. |
| if d.getVar('S') == d.getVar('B'): |
| configstamp = '${TMPDIR}/work-shared/${PN}/${EXTENDPE}${PV}-${PR}/configure.sstate' |
| d.setVar('CONFIGURESTAMPFILE', configstamp) |
| d.setVar('STAMP', '${STAMPS_DIR}/work-shared/${PN}/${EXTENDPE}${PV}-${PR}') |
| d.setVar('STAMPCLEAN', '${STAMPS_DIR}/work-shared/${PN}/*-*') |
| } |
| |
| python externalsrc_configure_prefunc() { |
| s_dir = d.getVar('S') |
| # Create desired symlinks |
| symlinks = (d.getVar('EXTERNALSRC_SYMLINKS') or '').split() |
| newlinks = [] |
| for symlink in symlinks: |
| symsplit = symlink.split(':', 1) |
| lnkfile = os.path.join(s_dir, symsplit[0]) |
| target = d.expand(symsplit[1]) |
| if len(symsplit) > 1: |
| if os.path.islink(lnkfile): |
| # Link already exists, leave it if it points to the right location already |
| if os.readlink(lnkfile) == target: |
| continue |
| os.unlink(lnkfile) |
| elif os.path.exists(lnkfile): |
| # File/dir exists with same name as link, just leave it alone |
| continue |
| os.symlink(target, lnkfile) |
| newlinks.append(symsplit[0]) |
| # Hide the symlinks from git |
| try: |
| git_exclude_file = os.path.join(s_dir, '.git/info/exclude') |
| if os.path.exists(git_exclude_file): |
| with open(git_exclude_file, 'r+') as efile: |
| elines = efile.readlines() |
| for link in newlinks: |
| if link in elines or '/'+link in elines: |
| continue |
| efile.write('/' + link + '\n') |
| except IOError as ioe: |
| bb.note('Failed to hide EXTERNALSRC_SYMLINKS from git') |
| } |
| |
| python externalsrc_compile_prefunc() { |
| # Make it obvious that this is happening, since forgetting about it could lead to much confusion |
| bb.plain('NOTE: %s: compiling from external source tree %s' % (d.getVar('PN'), d.getVar('EXTERNALSRC'))) |
| } |
| |
| do_buildclean[dirs] = "${S} ${B}" |
| do_buildclean[nostamp] = "1" |
| do_buildclean[doc] = "Call 'make clean' or equivalent in ${B}" |
| externalsrc_do_buildclean() { |
| if [ -e Makefile -o -e makefile -o -e GNUmakefile ]; then |
| oe_runmake clean || die "make failed" |
| else |
| bbnote "nothing to do - no makefile found" |
| fi |
| } |
| |
| def srctree_hash_files(d, srcdir=None): |
| import shutil |
| import subprocess |
| import tempfile |
| |
| s_dir = srcdir or d.getVar('EXTERNALSRC') |
| git_dir = os.path.join(s_dir, '.git') |
| oe_hash_file = os.path.join(git_dir, 'oe-devtool-tree-sha1') |
| |
| ret = " " |
| if os.path.exists(git_dir): |
| with tempfile.NamedTemporaryFile(dir=git_dir, prefix='oe-devtool-index') as tmp_index: |
| # Clone index |
| shutil.copy2(os.path.join(git_dir, 'index'), tmp_index.name) |
| # Update our custom index |
| env = os.environ.copy() |
| env['GIT_INDEX_FILE'] = tmp_index.name |
| subprocess.check_output(['git', 'add', '-A', '.'], cwd=s_dir, env=env) |
| sha1 = subprocess.check_output(['git', 'write-tree'], cwd=s_dir, env=env).decode("utf-8") |
| with open(oe_hash_file, 'w') as fobj: |
| fobj.write(sha1) |
| ret = oe_hash_file + ':True' |
| else: |
| ret = s_dir + '/*:True' |
| return ret |
| |
| def srctree_configure_hash_files(d): |
| """ |
| Get the list of files that should trigger do_configure to re-execute, |
| based on the value of CONFIGURE_FILES |
| """ |
| in_files = (d.getVar('CONFIGURE_FILES') or '').split() |
| out_items = [] |
| search_files = [] |
| for entry in in_files: |
| if entry.startswith('/'): |
| out_items.append('%s:%s' % (entry, os.path.exists(entry))) |
| else: |
| search_files.append(entry) |
| if search_files: |
| s_dir = d.getVar('EXTERNALSRC') |
| for root, _, files in os.walk(s_dir): |
| for f in files: |
| if f in search_files: |
| out_items.append('%s:True' % os.path.join(root, f)) |
| return ' '.join(out_items) |
| |
| EXPORT_FUNCTIONS do_buildclean |