blob: 85b5c48e531897a8b1078d72cd27e6d46b2f0326 [file] [log] [blame]
Patrick Williamsd8c66bc2016-06-20 12:57:21 -05001# Recipe creation tool - kernel module support plugin
2#
3# Copyright (C) 2016 Intel Corporation
4#
Brad Bishopc342db32019-05-15 21:57:59 -04005# SPDX-License-Identifier: GPL-2.0-only
Patrick Williamsd8c66bc2016-06-20 12:57:21 -05006#
Patrick Williamsd8c66bc2016-06-20 12:57:21 -05007
8import re
9import logging
10from recipetool.create import RecipeHandler, read_pkgconfig_provides, validate_pv
11
12logger = logging.getLogger('recipetool')
13
14tinfoil = None
15
16def tinfoil_init(instance):
17 global tinfoil
18 tinfoil = instance
19
20
21class KernelModuleRecipeHandler(RecipeHandler):
22 def process(self, srctree, classes, lines_before, lines_after, handled, extravalues):
23 import bb.process
24 if 'buildsystem' in handled:
25 return False
26
27 module_inc_re = re.compile(r'^#include\s+<linux/module.h>$')
28 makefiles = []
29 is_module = False
30
31 makefiles = []
32
Brad Bishopd7bf8c12018-02-25 22:55:05 -050033 files = RecipeHandler.checkfiles(srctree, ['*.c', '*.h'], recursive=True, excludedirs=['contrib', 'test', 'examples'])
Patrick Williamsd8c66bc2016-06-20 12:57:21 -050034 if files:
35 for cfile in files:
36 # Look in same dir or parent for Makefile
37 for makefile in [os.path.join(os.path.dirname(cfile), 'Makefile'), os.path.join(os.path.dirname(os.path.dirname(cfile)), 'Makefile')]:
38 if makefile in makefiles:
39 break
40 else:
41 if os.path.exists(makefile):
42 makefiles.append(makefile)
43 break
44 else:
45 continue
Patrick Williamsc0f7c042017-02-23 20:41:17 -060046 with open(cfile, 'r', errors='surrogateescape') as f:
Patrick Williamsd8c66bc2016-06-20 12:57:21 -050047 for line in f:
48 if module_inc_re.match(line.strip()):
49 is_module = True
50 break
51 if is_module:
52 break
53
54 if is_module:
55 classes.append('module')
56 handled.append('buildsystem')
57 # module.bbclass and the classes it inherits do most of the hard
58 # work, but we need to tweak it slightly depending on what the
59 # Makefile does (and there is a range of those)
60 # Check the makefile for the appropriate install target
61 install_lines = []
62 compile_lines = []
63 in_install = False
64 in_compile = False
65 install_target = None
Patrick Williamsc0f7c042017-02-23 20:41:17 -060066 with open(makefile, 'r', errors='surrogateescape') as f:
Patrick Williamsd8c66bc2016-06-20 12:57:21 -050067 for line in f:
68 if line.startswith('install:'):
69 if not install_lines:
70 in_install = True
71 install_target = 'install'
72 elif line.startswith('modules_install:'):
73 install_lines = []
74 in_install = True
75 install_target = 'modules_install'
76 elif line.startswith('modules:'):
77 compile_lines = []
78 in_compile = True
79 elif line.startswith(('all:', 'default:')):
80 if not compile_lines:
81 in_compile = True
82 elif line:
83 if line[0] == '\t':
84 if in_install:
85 install_lines.append(line)
86 elif in_compile:
87 compile_lines.append(line)
88 elif ':' in line:
89 in_install = False
90 in_compile = False
91
92 def check_target(lines, install):
93 kdirpath = ''
94 manual_install = False
95 for line in lines:
96 splitline = line.split()
97 if splitline[0] in ['make', 'gmake', '$(MAKE)']:
98 if '-C' in splitline:
99 idx = splitline.index('-C') + 1
100 if idx < len(splitline):
101 kdirpath = splitline[idx]
102 break
103 elif install and splitline[0] == 'install':
104 if '.ko' in line:
105 manual_install = True
106 return kdirpath, manual_install
107
108 kdirpath = None
109 manual_install = False
110 if install_lines:
111 kdirpath, manual_install = check_target(install_lines, install=True)
112 if compile_lines and not kdirpath:
113 kdirpath, _ = check_target(compile_lines, install=False)
114
115 if manual_install or not install_lines:
116 lines_after.append('EXTRA_OEMAKE_append_task-install = " -C ${STAGING_KERNEL_DIR} M=${S}"')
117 elif install_target and install_target != 'modules_install':
118 lines_after.append('MODULES_INSTALL_TARGET = "install"')
119
120 warnmsg = None
121 kdirvar = None
122 if kdirpath:
123 res = re.match(r'\$\(([^$)]+)\)', kdirpath)
124 if res:
125 kdirvar = res.group(1)
126 if kdirvar != 'KERNEL_SRC':
127 lines_after.append('EXTRA_OEMAKE += "%s=${STAGING_KERNEL_DIR}"' % kdirvar)
128 elif kdirpath.startswith('/lib/'):
129 warnmsg = 'Kernel path in install makefile is hardcoded - you will need to patch the makefile'
130 if not kdirvar and not warnmsg:
131 warnmsg = 'Unable to find means of passing kernel path into install makefile - if kernel path is hardcoded you will need to patch the makefile'
132 if warnmsg:
133 warnmsg += '. Note that the variable KERNEL_SRC will be passed in as the kernel source path.'
Brad Bishop1a4b7ee2018-12-16 17:11:34 -0800134 logger.warning(warnmsg)
Patrick Williamsd8c66bc2016-06-20 12:57:21 -0500135 lines_after.append('# %s' % warnmsg)
136
137 return True
138
139 return False
140
141def register_recipe_handlers(handlers):
142 handlers.append((KernelModuleRecipeHandler(), 15))