# 
 | 
# Writes build information to target filesystem on /etc/build 
 | 
# 
 | 
# Copyright (C) 2014 Intel Corporation 
 | 
# Author: Alejandro Enedino Hernandez Samaniego <alejandro.hernandez@intel.com> 
 | 
# 
 | 
# Licensed under the MIT license, see COPYING.MIT for details 
 | 
# 
 | 
# Usage: add INHERIT += "image-buildinfo" to your conf file 
 | 
# 
 | 
  
 | 
# Desired variables to display  
 | 
IMAGE_BUILDINFO_VARS ?= "DISTRO DISTRO_VERSION" 
 | 
  
 | 
# Desired location of the output file in the image. 
 | 
IMAGE_BUILDINFO_FILE ??= "${sysconfdir}/build" 
 | 
  
 | 
# From buildhistory.bbclass 
 | 
def image_buildinfo_outputvars(vars, d): 
 | 
    vars = vars.split() 
 | 
    ret = "" 
 | 
    for var in vars: 
 | 
        value = d.getVar(var) or "" 
 | 
        if (d.getVarFlag(var, 'type') == "list"): 
 | 
            value = oe.utils.squashspaces(value) 
 | 
        ret += "%s = %s\n" % (var, value) 
 | 
    return ret.rstrip('\n') 
 | 
  
 | 
# Gets git branch's status (clean or dirty) 
 | 
def get_layer_git_status(path): 
 | 
    import subprocess 
 | 
    try: 
 | 
        subprocess.check_output("""cd %s; export PSEUDO_UNLOAD=1; set -e; 
 | 
                                git diff --quiet --no-ext-diff 
 | 
                                git diff --quiet --no-ext-diff --cached""" % path, 
 | 
                                shell=True, 
 | 
                                stderr=subprocess.STDOUT) 
 | 
        return "" 
 | 
    except subprocess.CalledProcessError as ex: 
 | 
        # Silently treat errors as "modified", without checking for the 
 | 
        # (expected) return code 1 in a modified git repo. For example, we get 
 | 
        # output and a 129 return code when a layer isn't a git repo at all. 
 | 
        return "-- modified" 
 | 
  
 | 
# Returns layer revisions along with their respective status 
 | 
def get_layer_revs(d): 
 | 
    layers = (d.getVar("BBLAYERS") or "").split() 
 | 
    medadata_revs = ["%-17s = %s:%s %s" % (os.path.basename(i), \ 
 | 
        base_get_metadata_git_branch(i, None).strip(), \ 
 | 
        base_get_metadata_git_revision(i, None), \ 
 | 
        get_layer_git_status(i)) \ 
 | 
            for i in layers] 
 | 
    return '\n'.join(medadata_revs) 
 | 
  
 | 
def buildinfo_target(d): 
 | 
        # Get context 
 | 
        if d.getVar('BB_WORKERCONTEXT') != '1': 
 | 
                return "" 
 | 
        # Single and list variables to be read 
 | 
        vars = (d.getVar("IMAGE_BUILDINFO_VARS") or "") 
 | 
        return image_buildinfo_outputvars(vars, d) 
 | 
  
 | 
# Write build information to target filesystem 
 | 
python buildinfo () { 
 | 
    if not d.getVar('IMAGE_BUILDINFO_FILE'): 
 | 
        return 
 | 
    with open(d.expand('${IMAGE_ROOTFS}${IMAGE_BUILDINFO_FILE}'), 'w') as build: 
 | 
        build.writelines(( 
 | 
            '''----------------------- 
 | 
Build Configuration:  | 
 | 
----------------------- 
 | 
''', 
 | 
            buildinfo_target(d), 
 | 
            ''' 
 | 
----------------------- 
 | 
Layer Revisions:      | 
 | 
----------------------- 
 | 
''', 
 | 
            get_layer_revs(d), 
 | 
            ''' 
 | 
''' 
 | 
       )) 
 | 
} 
 | 
  
 | 
IMAGE_PREPROCESS_COMMAND += "buildinfo;" 
 |