summaryrefslogtreecommitdiff
path: root/eclass/perl-functions.eclass
blob: 106394afa15a2f8eedd04365496febe9f0fb0234 (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
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
# Copyright 1999-2022 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: perl-functions.eclass
# @MAINTAINER:
# perl@gentoo.org
# @AUTHOR:
# Seemant Kulleen <seemant@gentoo.org>
# Andreas K. Huettel <dilfridge@gentoo.org>
# Kent Fredric <kentnl@gentoo.org>
# @SUPPORTED_EAPIS: 6 7 8
# @BLURB: helper functions eclass for perl modules
# @DESCRIPTION:
# The perl-functions eclass is designed to allow easier installation of perl
# modules, and their incorporation into the Gentoo Linux system.
# It provides helper functions, no phases or variable manipulation in
# global scope.

case ${EAPI} in
	6|7|8)
		;;
	*)
		die "${ECLASS}: EAPI ${EAPI:-0} not supported"
		;;
esac

[[ ${CATEGORY} == "perl-core" ]] && inherit alternatives

perlinfo_done=false

# @FUNCTION: perl_set_version
# @DESCRIPTION:
# Extract version information and installation paths from the current Perl
# interpreter.
#
# This sets the following variables: PERL_VERSION, SITE_ARCH, SITE_LIB,
# ARCH_LIB, VENDOR_LIB, VENDOR_ARCH
#
# This function used to be called perlinfo as well.
#
# Example:
# @CODE
# perl_set_version
# echo $PERL_VERSION
# @CODE
perl_set_version() {
	debug-print-function $FUNCNAME "$@"
	debug-print "$FUNCNAME: perlinfo_done=${perlinfo_done}"
	${perlinfo_done} && return 0
	perlinfo_done=true

	local f version install{{site,vendor}{arch,lib},archlib}
	eval "$(perl -V:{version,install{{site,vendor}{arch,lib},archlib}} )"
	PERL_VERSION=${version}
	SITE_ARCH=${installsitearch}
	SITE_LIB=${installsitelib}
	ARCH_LIB=${installarchlib}
	VENDOR_LIB=${installvendorlib}
	VENDOR_ARCH=${installvendorarch}
}

# @FUNCTION: perl_delete_localpod
# @DESCRIPTION:
# Remove stray perllocal.pod files in the temporary install directory D.
#
# This function used to be called fixlocalpod as well.
perl_delete_localpod() {
	debug-print-function $FUNCNAME "$@"

	find "${D}" -type f -name perllocal.pod -delete
	find "${D}" -depth -mindepth 1 -type d -empty -delete
}

# @FUNCTION: perl_fix_osx_extra
# @DESCRIPTION:
# Look through ${S} for AppleDouble encoded files and get rid of them.
perl_fix_osx_extra() {
	debug-print-function $FUNCNAME "$@"

	local f
	find "${S}" -type f -name "._*" -print0 | while read -rd '' f ; do
		einfo "Removing AppleDouble encoded Macintosh file: ${f#${S}/}"
		rm -f "${f}"
		f=${f#${S}/}
		grep -q "${f}" "${S}"/MANIFEST && \
			elog "AppleDouble encoded Macintosh file in MANIFEST: ${f#${S}/}"
	done
}

# @FUNCTION: perl_delete_module_manpages
# @DESCRIPTION:
# Bump off manpages installed by the current module such as *.3pm files as well
# as empty directories.
perl_delete_module_manpages() {
	debug-print-function $FUNCNAME "$@"

	if [[ -d "${ED}"/usr/share/man ]] ; then
		find "${ED}"/usr/share/man -type f -name "*.3pm" -delete
		find "${ED}"/usr/share/man -depth -type d -empty -delete
	fi
}

# @FUNCTION: perl_delete_packlist
# @DESCRIPTION:
# Look through ${D} for .packlist files, empty .bs files and empty directories,
# and get rid of items found.
perl_delete_packlist() {
	debug-print-function $FUNCNAME "$@"
	perl_set_version
	if [[ -d ${D}/${VENDOR_ARCH} ]] ; then
		find "${D}/${VENDOR_ARCH}" -type f -a -name .packlist -delete
		perl_delete_emptybsdir
	fi
}

# @FUNCTION: perl_delete_emptybsdir
# @DESCRIPTION:
# Look through ${D} for empty .bs files and empty directories,
# and get rid of items found.
perl_delete_emptybsdir() {
	debug-print-function $FUNCNAME "$@"
	perl_set_version
	if [[ -d ${D}/${VENDOR_ARCH} ]] ; then
		find "${D}/${VENDOR_ARCH}" -type f \
			-a -name '*.bs' -a -empty -delete
		find "${D}" -depth -mindepth 1 -type d -empty -delete
	fi
}

# @FUNCTION: perl_fix_permissions
# @DESCRIPTION:
# Make all of ${D} user-writable, since EU::MM does silly things with
# the w bit. See bug 554346.
perl_fix_permissions() {
	debug-print-function $FUNCNAME "$@"
	perl_set_version
	einfo Fixing installed file permissions
	fperms -R u+w /
}

# @FUNCTION: perl_fix_packlist
# @DESCRIPTION:
# Look through ${D} for .packlist text files containing the temporary installation
# folder (i.e. ${D}). If the pattern is found, silently replace it with `/'.
# Remove duplicate entries; then validate all entries in the packlist against ${D}
# and prune entries that do not correspond to installed files.
perl_fix_packlist() {
	debug-print-function $FUNCNAME "$@"

	local packlist_temp="${T}/.gentoo_packlist_temp"
	find "${D}" -type f -name '.packlist' -print0 | while read -rd '' f ; do
		if file "${f}" | grep -q -i " text" ; then
                        einfo "Fixing packlist file /${f#${D}}"

			# remove the temporary build dir path
			sed -i -e "s:${D%/}/:/:g" "${f}"

			# remove duplicate entries
			sort -u "${f}" > "${packlist_temp}"
			mv "${packlist_temp}" "${f}"

			# remove files that dont exist
			cat "${f}" | while read -r entry; do
				if [[ ! -e ${D}/${entry} ]]; then
					einfo "Pruning surplus packlist entry ${entry}"
					grep -v -x -F "${entry}" "${f}" > "${packlist_temp}"
					mv "${packlist_temp}" "${f}"
				fi
			done
		fi
	done
}

# @FUNCTION: perl_remove_temppath
# @DESCRIPTION:
# Look through ${D} for text files containing the temporary installation
# folder (i.e. ${D}). If the pattern is found, replace it with `/' and warn.
perl_remove_temppath() {
	debug-print-function $FUNCNAME "$@"

	find "${D}" -type f -not -name '*.so' -print0 | while read -rd '' f ; do
		if file "${f}" | grep -q -i " text" ; then
			grep -q "${D}" "${f}" && ewarn "QA: File contains a temporary path ${f}"
			sed -i -e "s:${D%/}/:/:g" "${f}"
		fi
	done
}

# @FUNCTION: perl_rm_files
# @USAGE: <list of files>
# @DESCRIPTION:
# Remove certain files from a Perl release and remove them from the MANIFEST
# while we're there.
#
# Most useful in src_prepare for nuking bad tests, and is highly recommended
# for any tests like 'pod.t', 'pod-coverage.t' or 'kwalitee.t', as what they
# test is completely irrelevant to end users, and frequently fail simply
# because the authors of Test::Pod... changed their recommendations, and thus
# failures are only useful feedback to Authors, not users.
#
# Removing from MANIFEST also avoids needless log messages warning
# users about files "missing from their kit".
#
# Example:
# @CODE
# src_test() {
#   perl_rm_files t/pod{,-coverage}.t
#   perl-module_src_test
# }
# @CODE
perl_rm_files() {
	debug-print-function $FUNCNAME "$@"
	local skipfile="${T}/.gentoo_makefile_skip"
	local manifile="${S}/MANIFEST"
	local manitemp="${T}/.gentoo_manifest_temp"
	oldifs="$IFS"
	IFS="\n"
	for filename in "$@"; do
		einfo "Removing un-needed ${filename}";
		# Remove the file
		rm -f "${S}/${filename}"
		[[ -e "${manifile}" ]] && echo "${filename}" >> "${skipfile}"
	done
	if [[ -e "${manifile}" && -e "${skipfile}" ]]; then
		einfo "Fixing Manifest"
		grep -v -F -f "${skipfile}" "${manifile}" > "${manitemp}"
		mv -f -- "${manitemp}" "${manifile}"
		rm -- "${skipfile}";
	fi
	IFS="$oldifs"
}

# @FUNCTION: perl_link_duallife_scripts
# @DESCRIPTION:
# Moves files and generates symlinks so dual-life packages installing scripts do not
# lead to file collisions. Mainly for use in pkg_postinst and pkg_postrm, and makes
# only sense for perl-core packages.
perl_link_duallife_scripts() {
	debug-print-function $FUNCNAME "$@"
	[[ ${CATEGORY} != perl-core ]] && return 0

	local i ff
	if has "${EBUILD_PHASE:-none}" "postinst" "postrm" ; then
		for i in "${DUALLIFESCRIPTS[@]}" ; do
			alternatives_auto_makesym "/${i}" "/${i}-[0-9]*"
		done
		for i in "${DUALLIFEMAN[@]}" ; do
			ff=`echo "${EROOT}"/${i%.1}-${PV}-${P}.1*`
			ff=${ff##*.1}
			alternatives_auto_makesym "/${i}${ff}" "/${i%.1}-[0-9]*"
		done
	else
		pushd "${ED}" > /dev/null
		for i in $(find usr/bin -maxdepth 1 -type f 2>/dev/null) ; do
			mv ${i}{,-${PV}-${P}} || die
			#DUALLIFESCRIPTS[${#DUALLIFESCRIPTS[*]}]=${i##*/}
			DUALLIFESCRIPTS[${#DUALLIFESCRIPTS[*]}]=${i}
		done
		for i in $(find usr/share/man/man1 -maxdepth 1 -type f 2>/dev/null) ; do
			mv ${i} ${i%.1}-${PV}-${P}.1 || die
			DUALLIFEMAN[${#DUALLIFEMAN[*]}]=${i}
		done
		popd > /dev/null
	fi
}

# @FUNCTION: perl_check_env
# @DESCRIPTION:
# Checks a blacklist of known-suspect ENV values that can be accidentally set by users
# doing personal perl work, which may accidentally leak into portage and break the
# system perl installaton.
# Dies if any of the suspect fields are found, and tell the user what needs to be unset.
# There's a workaround, but you'll have to read the code for it.
perl_check_env() {
	local errored value;

	for i in PERL_MM_OPT PERL5LIB PERL5OPT PERL_MB_OPT PERL_CORE PERLPREFIX; do
		# Next unless match
		[[ -v $i ]] || continue;

		# Warn only once, and warn only when one of the bad values are set.
		# record failure here.
		if [[ ${errored:-0} == 0 ]]; then
			if [[ -n ${I_KNOW_WHAT_I_AM_DOING} ]]; then
				elog "perl-module.eclass: Suspicious environment values found.";
			else
				eerror "perl-module.eclass: Suspicious environment values found.";
			fi
		fi
		errored=1

		# Read ENV Value
		value=${!i};

		# Print ENV name/value pair
		if [[ -n ${I_KNOW_WHAT_I_AM_DOING} ]]; then
			elog "    $i=\"$value\"";
		else
			eerror "    $i=\"$value\"";
		fi
	done

	# Return if there were no failures
	[[ ${errored:-0} == 0 ]] && return;

	# Return if user knows what they're doing
	if [[ -n ${I_KNOW_WHAT_I_AM_DOING} ]]; then
		elog "Continuing anyway, seems you know what you're doing."
		return
	fi

	eerror "Your environment settings may lead to undefined behavior and/or build failures."
	die "Please fix your environment ( ~/.bashrc, package.env, ... ), see above for details."
}

# @FUNCTION: perl_doexamples
# @USAGE: <list of files or globs>
# @DESCRIPTION:
# Install example files ready-to-run.
# Is called under certain circumstances in perl-module.eclass src_install
# (see the documentation there).
#
# Example:
# @CODE
# src_install() {
#   perl-module_src_install
#   use examples && perl_doexamples "eg/*"
# }
# @CODE
perl_doexamples() {
	debug-print-function $FUNCNAME "$@"

	einfo "Installing examples into /usr/share/doc/${PF}/examples"

	# no compression since we want ready-to-run scripts
	docompress -x /usr/share/doc/${PF}/examples

	docinto examples/
	# Lack of quoting here is important in order to support glob expansion
	# in DIST_EXAMPLES=( ), which is defined before source extraction occurs
	dodoc -r $@

	# is there a way to undo "docinto" ?
}

# @FUNCTION: perl_has_module
# @USAGE: <module name>
# @RETURN: 0 if available, non-zero otherwise
# @DESCRIPTION:
# Query the installed system Perl to see if a given module is installed.
# This does **not** load the module in question, only anticipates if it *might* load.
#
# This is primarily for the purposes of dependency weakening so that conditional
# behaviour can be triggered without adding dependencies to portage which would confuse
# a dependency resolver.
#
# returns 'true' if the module is available, returns error if the module is not available
#
# Example:
# @CODE
# perl_has_module "Test::Tester" && echo "Test::Tester installed"
# @CODE

perl_has_module() {
	debug-print-function $FUNCNAME "$@"

	[[ $# -gt 0 ]] || die "${FUNCNAME}: No module name provided"
	[[ $# -lt 2 ]] || die "${FUNCNAME}: Too many parameters ($#)"

	perl -we 'my $mn = $ARGV[0];
		$mn =~ s{(::|\x{27})}{/}g;
		for(@INC){
			next if ref $_;
			exit 0 if -r $_ . q[/] . $mn . q[.pm]
		}
		exit 1' "$@";
}

# @FUNCTION: perl_has_module_version
# @USAGE: <module name> <minimum upstream version>
# @RETURN: 0 if satisfied, non-zero otherwise
# @DESCRIPTION:
# Query the installed system Perl to see if a given module is installed
# and is at least a given version.
#
# This requires more caution to use than perl_has_module as it requires
# loading the module in question to determine version compatibility,
# which can be SLOW, and can have side effects (ie: compilation fails in
# require due to some dependency, resulting in a "Fail")
#
# Also take care to note the module version is a *minimum*, *must* be
# written in upstream versions format and should be a a legal upstream version
#
# returns a true exit code if the module is both available and is at least
# the specified version
#
# Example:
# @CODE
# perl_has_module_version "Test::Tester" "0.017" \
#	&& echo "Test::Tester 0.017 or greater installed"
# @CODE
perl_has_module_version() {
	debug-print-function $FUNCNAME "$@"

	[[ $# -gt 0 ]] || die "${FUNCNAME}: No module name provided"
	[[ $# -gt 1 ]] || die "${FUNCNAME}: No module version provided"
	[[ $# -lt 3 ]] || die "${FUNCNAME}: Too many parameters ($#)"

	perl -we 'my $mn = $ARGV[0];
		$mn =~ s{(::|\x{27})}{/}g;
		exit ( eval {
			require qq[${mn}.pm];
			$ARGV[0]->VERSION($ARGV[1]);
			1
		} ? 0 : 1 )' "$@"
}

# @FUNCTION: perl_get_module_version
# @USAGE: <module name>
# @RETURN: 0 if module available, non-zero if error
# @DESCRIPTION:
# Query the installed system perl to report the version of the installed
# module.
#
# Note this should be strictly for diagnostic purposes to the end user,
# and may be of selective use in pkg_info to enhance
# emerge --info reports.
#
# Anything that does version comparisons **must not** use the return value
# from this function
#
# Also note that this **must** at least attempt load the module in
# question as part of its operation, and is subsequently prone to SLOWness.
#
# Return codes return error in both compilation-failure and not-installed cases.
#
# Example:
# @CODE
# MODVER=$(perl_get_module_version "Test::Simple") \
#	|| die "Test::Simple not installed: $MODVER"
# @CODE

perl_get_module_version() {
	debug-print-function $FUNCNAME "$@"

	[[ $# -gt 0 ]] || die "${FUNCNAME}: No module name provided"
	[[ $# -lt 2 ]] || die "${FUNCNAME}: Too many parameters ($#)"

	if ! perl_has_module "$@" ; then
		echo "(Not Installed)";
		return 1;
	fi

	# Todo: What do we do if require fails? spew to stderr
	# or stay silent?

	perl -we 'my $mn = $ARGV[0];
		$mn =~ s{(::|\x{27})}{/}g;
		local $@;
		eval { require qq[${mn}.pm]; 1 } or do {
			print q[(Compilation failed in require)];
			exit 1;
		};
		my $stash = \%{ $ARGV[0] . q[::] };
		if ( not exists $stash->{VERSION} ) {
			print q[(No VERSION property)];
			exit 0;
		}
		if ( not defined ${$stash->{VERSION}} ) {
			print q[(undef)];
			exit 0;
		}
		print ${$stash->{VERSION}};
		exit 0; ' "$@"
}

# @FUNCTION: perl_get_raw_vendorlib
# @DESCRIPTION:
# Convenience function to optimise for a common case without double-handling
# variables everywhere.
#
# Note: Will include EPREFIX where relevant
#
# Example:
# @CODE
# my_raw_vendorlib="$(perl_get_raw_vendorlib)"
# @CODE

perl_get_raw_vendorlib() {
	debug-print-function $FUNCNAME "$@"

	[[ $# -lt 1 ]] || die "${FUNCNAME}: Too many parameters ($#)"

	perl -MConfig \
		-e'exists $Config{$ARGV[0]} || die qq{No such Config key "$ARGV[0]"};
		   print $Config{$ARGV[0]};
		   exit 0' -- "installvendorlib" || die "Can't extract installvendorlib from Perl Configuration"
}

# @FUNCTION: perl_get_vendorlib
# @DESCRIPTION:
# Convenience helper for returning Perls' vendor install root
# without EPREFIXing.
#
# Example:
# @CODE
# my_vendorlib="$(perl_get_vendorlib)"
# @CODE

perl_get_vendorlib() {
	debug-print-function $FUNCNAME "$@"

	[[ $# -lt 1 ]] || die "${FUNCNAME}: Too many parameters ($#)"

	# Requires perl 5.14 for /r attribute of s///
	# Just in case somebody out there is stuck in a time warp: upgrade perl first
	perl -M5.014 -MConfig \
		-e'exists $Config{$ARGV[0]} || die qq{No such Config key "$ARGV[0]"};
		   print $Config{$ARGV[0]} =~ s{\A\Q$ARGV[1]\E}{}r;
		   exit 0' -- "installvendorlib" "$EPREFIX" || die "Can't extract installvendorlib from Perl Configuration"
}

# @FUNCTION: perl_domodule
# @USAGE: [-C <target>] [-r] <files>
# @DESCRIPTION:
# Installs files in paths where they can be found in the default
# Perl runtime.
#
# Note: Should only be used in src_install or pkg_preinst
# anywhere else will do the wrong thing or die.
#
# The contents of the <files> list are copied into Perls Vendor library path
# as follows:
# @CODE
#   # install perl/File.pm as Samba::File
#   pushd perl/
#   perl_domodule -C Samba File.pm
#
#   # install perl/ recursively under VENDORLIB/Samba/
#   pushd perl/
#   perl_domodule -C Samba -r .
# @CODE
#
# @CODE
#   options:
#       -C Target/Name
#          The subdirectory relative to the Perl VENDOR_LIB
#          to install into.
#
#          defaults to ""
#       -r
#          Install directories recursively ( see doins )
#          files:
#          list of .pm files to install to VENDORLIB
# @CODE

perl_domodule() {
	local target_prefix=""
	local files=()
	local doins_opts=()

	local recursive="false"
	local target
	local file

	while [[ $# -gt 0 ]] ; do
		case $1 in
			-C|--target-prefix)
				[[ -z "${2}" || "${2:0:1}" == "-" ]] && die "${FUNCNAME}: -C|--target-prefix expects an argument, got \"$2\"!"
				target_prefix="${2}";
				shift 2;;
			-r)
				recursive="true"
				shift;;
			*)
				[[ -z "${1}" || "${1:0:1}" == "-" ]] && die "${FUNCNAME}: Unknown argument \"${1}\"!"
				files+=( "${1}" )
				shift 1;;
		esac
	done

	if [[ "true" == $recursive ]]; then
		doins_opts+=( "-r" )
	fi
	for file in "${files[@]}"; do
		[[ -e "${file}" ]] || die "$FUNCNAME: Argument \"${file}\" is not an existing file"
		[[ "false" == ${recursive} && -d "${file}" ]] && die "$FUNCNAME: Argument \"${file}\" is a directory ( needs -r parameter )"
	done

	target="$(perl_get_vendorlib)"

	# Extend target if target_prefix is set
	[[ -z "${target_prefix}" ]] || target="${target%/}/${target_prefix#/}"

	insinto "/${target#/}"
	doins "${doins_opts[@]}" "${files[@]}"
}

# @FUNCTION: perl_get_wikiurl
# @DESCRIPTION:
# Convenience helper for returning the Gentoo Wiki maintenance page URL of a
# package. Optionally a suffix can be passed for an in-page anchor.
#
# Example:
# @CODE
# my_url="$(perl_get_wikiurl Testing)"
# @CODE

perl_get_wikiurl() {
	debug-print-function $FUNCNAME "$@"

	if [[ -z "${1}" ]]; then
		echo "https://wiki.gentoo.org/wiki/Project:Perl/maint-notes/${CATEGORY}/${PN}"
	else
		echo "https://wiki.gentoo.org/wiki/Project:Perl/maint-notes/${CATEGORY}/${PN}#${1}"
	fi
}

perl_get_wikiurl_features() {
	perl_get_wikiurl Optional_Features
}

perl_get_wikiurl_tests() {
	perl_get_wikiurl Testing
}