aboutsummaryrefslogtreecommitdiff
blob: 2776c72abbc5056d98dd1c9ccf1ecbd5896cafc6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$

#
# Helper functions
#
function printn(string) {
	printf("%s", string)
}
function einfo(string) {
	printf(" \033[32;01m*\033[0m %s\n", string)
}
function einfon(string) {
	printf(" \033[32;01m*\033[0m %s", string)
}
function ewarn(string) {
	printf(" \033[33;01m*\033[0m %s\n", string)
}
function ewarnn(string) {
	printf(" \033[33;01m*\033[0m %s", string)
}
function eerror(string) {
	printf(" \033[31;01m*\033[0m %s\n", string)
}

#
# assert(condition, errmsg)
#   assert that a condition is true.  Otherwise exit.
#
function assert(condition, string) {
	if (! condition) {
		printf("%s:%d: assertion failed: %s\n",
		       FILENAME, FNR, string) > "/dev/stderr"
		_assert_exit = 1
		exit 1
	}
}

#
# system(command, return)
#   wrapper that normalizes return codes ...
#
function dosystem(command, ret) {
	ret = 0
	ret = system(command)
	if (ret == 0)
		return 1
	else
		return 0
}

#
# parse_ld_conf(config_file)
#
function parse_ld_conf(conf,    pipe, ldsoconf_data, CHILD, y) {
	pipe = "cd /etc; cat " conf " | sort 2>/dev/null"
	while(((pipe) | getline ldsoconf_data) > 0) {
		if (ldsoconf_data ~ /^[[:space:]]*#/)
			continue
		if (ldsoconf_data == "")
			continue

		# Handle the "include" keyword
		if (ldsoconf_data ~ /^include /) {
			sub(/^include /, "", ldsoconf_data)
			parse_ld_conf(ldsoconf_data)
			continue
		}

		# Remove any trailing comments
		sub(/#.*$/, "", ldsoconf_data)
		# Remove any trailing spaces
		sub(/[[:space:]]+$/, "", ldsoconf_data)
		# Eat duplicate slashes
		sub(/\/\//, "/", ldsoconf_data)
		# Prune trailing /
		sub(/\/$/, "", ldsoconf_data)

		#
		# Drop the directory if its a child directory of
		# one that was already added ...
		# For example, if we have:
		#   /usr/lib /usr/libexec /usr/lib/mozilla /usr/lib/nss
		# We really just want to save /usr/lib /usr/libexec
		#
		CHILD = 0
		for (y in DIRLIST) {
			if (ldsoconf_data ~ "^" DIRLIST[y] "(/|$)") {
				CHILD = 1
				break
			}
		}
		if (CHILD) continue

		DIRLIST[++LIBCOUNT] = ldsoconf_data
	}
	close(pipe)
}

BEGIN {
	#
	# Get our variables from environment
	#
	OLDVER = ENVIRON["OLDVER"]
	OLDCHOST = ENVIRON["OLDCHOST"]

	if (OLDVER == "") {
		eerror("Could not get OLDVER!");
		exit 1
	}

	# Setup some sane defaults
	LIBCOUNT = 2
	HAVE_GCC34 = 0
	DIRLIST[1] = "/lib"
	DIRLIST[2] = "/usr/lib"

	#
	# Walk /etc/ld.so.conf to discover all our library paths
	#
	parse_ld_conf("/etc/ld.so.conf")

	#
	# Get line from gcc's output containing CHOST
	#
	pipe = "gcc -print-file-name=libgcc.a 2>/dev/null"
	if ((!((pipe) | getline TMP_CHOST)) || (TMP_CHOST == "")) {
		close(pipe)

		# If we fail to get the CHOST, see if we can get the CHOST
		# portage thinks we are using ...
		pipe = "/usr/bin/portageq envvar 'CHOST'"
		assert(((pipe) | getline CHOST), "(" pipe ") | getline CHOST")
	} else {
		# Check pre gcc-3.4.x versions
		CHOST = gensub("^.+lib/gcc-lib/([^/]+)/[0-9]+.+$", "\\1", 1, TMP_CHOST)

		if (CHOST == TMP_CHOST || CHOST == "") {
			# Check gcc-3.4.x or later
			CHOST = gensub("^.+lib/gcc/([^/]+)/[0-9]+.+$", "\\1", 1, TMP_CHOST);

			if (CHOST == TMP_CHOST || CHOST == "")
				CHOST = ""
			else
				HAVE_GCC34 = 1
		}
	}
	close(pipe)

	if (CHOST == "") {
		eerror("Could not get gcc's CHOST!")
		exit 1
	}

	if (OLDCHOST != "")
		if (OLDCHOST == CHOST)
			OLDCHOST = ""

	GCCLIBPREFIX_OLD = "/usr/lib/gcc-lib/"
	GCCLIBPREFIX_NEW = "/usr/lib/gcc/"

	if (HAVE_GCC34)
		GCCLIBPREFIX = GCCLIBPREFIX_NEW
	else
		GCCLIBPREFIX = GCCLIBPREFIX_OLD

	GCCLIB = GCCLIBPREFIX CHOST

	if (OLDCHOST != "") {
		OLDGCCLIB1 = GCCLIBPREFIX_OLD OLDCHOST
		OLDGCCLIB2 = GCCLIBPREFIX_NEW OLDCHOST
	}

	# Get current gcc's version
	pipe = "gcc -dumpversion"
	assert(((pipe) | getline NEWVER), "(" pipe ") | getline NEWVER)")
	close(pipe)

	if (NEWVER == "") {
		eerror("Could not get gcc's version!")
		exit 1
	}

	# Nothing to do ?
	# NB: Do not check for (OLDVER == NEWVER) anymore, as we might need to
	#     replace libstdc++.la ....
	if ((OLDVER == "") && (OLDCHOST == ""))
		exit 0

	#
	# Ok, now let's scan for the .la files and actually fix them up
	#
	for (x = 1; x <= LIBCOUNT; x++) {
		# Do nothing if the target dir is gcc's internal library path
		if (DIRLIST[x] ~ GCCLIBPREFIX_OLD ||
		    DIRLIST[x] ~ GCCLIBPREFIX_NEW)
			continue

		einfo("  [" x "/" LIBCOUNT "] Scanning " DIRLIST[x] " ...")

		pipe = "find " DIRLIST[x] "/ -name '*.la' 2>/dev/null"
		while (((pipe) | getline la_files) > 0) {

			# Do nothing if the .la file is located in gcc's internal lib path
			if (la_files ~ GCCLIBPREFIX_OLD ||
			    la_files ~ GCCLIBPREFIX_NEW)
				continue

			CHANGED = 0
			CHOST_CHANGED = 0

			# See if we need to fix the .la file
			while ((getline la_data < (la_files)) > 0) {
				if (OLDCHOST != "") {
					if ((gsub(OLDGCCLIB1 "[/[:space:]]+",
					          GCCLIB, la_data) > 0) ||
					    (gsub(OLDGCCLIB2 "[/[:space:]]+",
					          GCCLIB, la_data) > 0)) {
						CHANGED = 1
						CHOST_CHANGED = 1
					}
				}
				if (OLDVER != NEWVER) {
					if ((gsub(GCCLIBPREFIX_OLD CHOST "/" OLDVER "[/[:space:]]*",
					          GCCLIB "/" NEWVER, la_data) > 0) ||
					    (gsub(GCCLIBPREFIX_NEW CHOST "/" OLDVER "[/[:space:]]*",
					          GCCLIB "/" NEWVER, la_data) > 0))
						CHANGED = 1
				}
				# We now check if we have libstdc++.la, as we remove the
				# libtool linker scripts for gcc ...
				# We do this last, as we only match the new paths
				if (gsub(GCCLIB "/" NEWVER "/libstdc\\+\\+\\.la",
				         "-lstdc++", la_data) > 0)
					CHANGED = 1
			}
			close(la_files)

			# Do the actual changes in a second loop, as we can then
			# verify that CHOST_CHANGED among things is correct ...
			if (CHANGED) {
				ewarnn("    FIXING: " la_files " ...[")

				# Clear the temp file (removing rather than '>foo' is better
				# out of a security point of view?)
				dosystem("rm -f " la_files ".new")

				while ((getline la_data < (la_files)) > 0) {
					if (OLDCHOST != "") {
						tmpstr = gensub(OLDGCCLIB1 "([/[:space:]]+)",
						                GCCLIB "\\1", "g", la_data)
						tmpstr = gensub(OLDGCCLIB2 "([/[:space:]]+)",
						                GCCLIB "\\1", "g", tmpstr)

						if (la_data != tmpstr) {
							printn("c")
							la_data = tmpstr
						}

						if (CHOST_CHANGED > 0) {
							# We try to be careful about CHOST changes outside
							# the gcc library path (meaning we cannot match it
							# via /GCCLIBPREFIX CHOST/) ...

							# Catch:
							#
							#  dependency_libs=' -L/usr/CHOST/{bin,lib}'
							#
							gsub("-L/usr/" OLDCHOST "/",
							     "-L/usr/" CHOST "/", la_data)
							# Catch:
							#
							#  dependency_libs=' -L/usr/lib/gcc-lib/CHOST/VER/../../../../CHOST/lib'
							#
							la_data = gensub("(" GCCLIB "/[^[:space:]]+)/" OLDCHOST "/",
							                 "\\1/" CHOST "/", "g", la_data)
						}
					}

					if (OLDVER != NEWVER) {
						# Catch:
						#
						#  dependency_libs=' -L/usr/lib/gcc/CHOST/VER'
						#
						tmpstr = gensub(GCCLIBPREFIX_OLD CHOST "/" OLDVER "([/[:space:]]+)",
						                GCCLIB "/" NEWVER "\\1", "g", la_data)
						tmpstr = gensub(GCCLIBPREFIX_NEW CHOST "/" OLDVER "([/[:space:]]+)",
						                GCCLIB "/" NEWVER "\\1", "g", tmpstr)

						if (la_data != tmpstr) {
							# Catch:
							#
							#  dependency_libs=' -L/usr/lib/gcc-lib/../../CHOST/lib'
							#
							# in cases where we have gcc34
							tmpstr = gensub(GCCLIBPREFIX_OLD "(../../" CHOST "/lib)",
							                GCCLIBPREFIX "\\1", "g", tmpstr)
							tmpstr = gensub(GCCLIBPREFIX_NEW "(../../" CHOST "/lib)",
							                GCCLIBPREFIX "\\1", "g", tmpstr)
							printn("v")
							la_data = tmpstr
						}
					}

					# We now check if we have libstdc++.la, as we remove the
					# libtool linker scripts for gcc and any referencese in any
					# libtool linker scripts.
					# We do this last, as we only match the new paths
					tmpstr = gensub(GCCLIB "/" NEWVER "/libstdc\\+\\+\\.la",
					                "-lstdc++", "g", la_data);
					if (la_data != tmpstr) {
						printn("l")
						la_data = tmpstr
					}
					
					print la_data >> (la_files ".new")
				}

				if (CHANGED)
					print "]"

				close(la_files)
				close(la_files ".new")

				assert(dosystem("mv -f " la_files ".new " la_files),
				       "dosystem(\"mv -f " la_files ".new " la_files "\")")
			}
		}

		close(pipe)
	}
}

# vim:ts=4