summaryrefslogtreecommitdiff
blob: f7887d0e26ffb120ba58a67f94d8ce7b0c496e45 (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
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

# @ECLASS: cmake.eclass
# @MAINTAINER:
# kde@gentoo.org
# @AUTHOR:
# Tomáš Chvátal <scarabeus@gentoo.org>
# Maciej Mrozowski <reavertm@gentoo.org>
# (undisclosed contributors)
# Original author: Zephyrus (zephyrus@mirach.it)
# @SUPPORTED_EAPIS: 7
# @BLURB: common ebuild functions for cmake-based packages
# @DESCRIPTION:
# The cmake eclass makes creating ebuilds for cmake-based packages much easier.
# It provides all inherited features (DOCS, HTML_DOCS, PATCHES) along with
# out-of-source builds (default), in-source builds and an implementation of the
# well-known use_enable function for CMake.

if [[ -z ${_CMAKE_ECLASS} ]]; then
_CMAKE_ECLASS=1

# @ECLASS-VARIABLE: BUILD_DIR
# @DESCRIPTION:
# Build directory where all cmake processed files should be generated.
# For in-source build it's fixed to ${CMAKE_USE_DIR}.
# For out-of-source build it can be overridden, by default it uses
# ${WORKDIR}/${P}_build.
: ${BUILD_DIR:=${WORKDIR}/${P}_build}

# @ECLASS-VARIABLE: CMAKE_BINARY
# @DESCRIPTION:
# Eclass can use different cmake binary than the one provided in by system.
: ${CMAKE_BINARY:=cmake}

# @ECLASS-VARIABLE: CMAKE_BUILD_TYPE
# @DESCRIPTION:
# Set to override default CMAKE_BUILD_TYPE. Only useful for packages
# known to make use of "if (CMAKE_BUILD_TYPE MATCHES xxx)".
# If about to be set - needs to be set before invoking cmake_src_configure.
# You usually do *NOT* want nor need to set it as it pulls CMake default
# build-type specific compiler flags overriding make.conf.
: ${CMAKE_BUILD_TYPE:=Gentoo}

# @ECLASS-VARIABLE: CMAKE_IN_SOURCE_BUILD
# @DEFAULT_UNSET
# @DESCRIPTION:
# Set to enable in-source build.

# @ECLASS-VARIABLE: CMAKE_MAKEFILE_GENERATOR
# @DEFAULT_UNSET
# @DESCRIPTION:
# Specify a makefile generator to be used by cmake.
# At this point only "emake" and "ninja" are supported.
# The default is set to "ninja".
: ${CMAKE_MAKEFILE_GENERATOR:=ninja}

# @ECLASS-VARIABLE: CMAKE_REMOVE_MODULES_LIST
# @DESCRIPTION:
# Array of CMake modules that will be removed in $S during src_prepare,
# in order to force packages to use the system version.
# Set to "none" to disable removing modules entirely.
: ${CMAKE_REMOVE_MODULES_LIST:=FindBLAS FindLAPACK}

# @ECLASS-VARIABLE: CMAKE_USE_DIR
# @DESCRIPTION:
# Sets the directory where we are working with cmake, for example when
# application uses autotools and only one plugin needs to be done by cmake.
# By default it uses ${S}.

# @ECLASS-VARIABLE: CMAKE_VERBOSE
# @DESCRIPTION:
# Set to OFF to disable verbose messages during compilation
: ${CMAKE_VERBOSE:=ON}

# @ECLASS-VARIABLE: CMAKE_WARN_UNUSED_CLI
# @DESCRIPTION:
# Warn about variables that are declared on the command line
# but not used. Might give false-positives.
# "no" to disable (default) or anything else to enable.
: ${CMAKE_WARN_UNUSED_CLI:=yes}

# @ECLASS-VARIABLE: CMAKE_EXTRA_CACHE_FILE
# @DEFAULT_UNSET
# @DESCRIPTION:
# Specifies an extra cache file to pass to cmake. This is the analog of EXTRA_ECONF
# for econf and is needed to pass TRY_RUN results when cross-compiling.
# Should be set by user in a per-package basis in /etc/portage/package.env.

# @ECLASS-VARIABLE: CMAKE_QA_SRC_DIR_READONLY
# @DEFAULT_UNSET
# @DESCRIPTION:
# After running cmake_src_prepare, sets ${S} to read-only. This is
# a user flag and should under _no circumstances_ be set in the ebuild.
# Helps in improving QA of build systems that write to source tree.

case ${EAPI} in
	7) ;;
	*) die "EAPI=${EAPI:-0} is not supported" ;;
esac

inherit toolchain-funcs ninja-utils flag-o-matic multiprocessing xdg-utils

EXPORT_FUNCTIONS src_prepare src_configure src_compile src_test src_install

[[ ${CMAKE_MIN_VERSION} ]] && die "CMAKE_MIN_VERSION is banned; if necessary, set BDEPEND=\">=dev-util/cmake-${CMAKE_MIN_VERSION}\" directly"
[[ ${CMAKE_BUILD_DIR} ]] && die "The ebuild must be migrated to BUILD_DIR"
[[ ${CMAKE_REMOVE_MODULES} ]] && die "CMAKE_REMOVE_MODULES is banned, set CMAKE_REMOVE_MODULES_LIST=\"\" instead"
[[ ${CMAKE_UTILS_QA_SRC_DIR_READONLY} ]] && die "Use CMAKE_QA_SRC_DIR_READONLY instead"
[[ ${WANT_CMAKE} ]] && die "WANT_CMAKE has been removed and is a no-op"
[[ ${PREFIX} ]] && die "PREFIX has been removed and is a no-op"

case ${CMAKE_MAKEFILE_GENERATOR} in
	emake)
		BDEPEND="sys-devel/make"
		;;
	ninja)
		BDEPEND="dev-util/ninja"
		;;
	*)
		eerror "Unknown value for \${CMAKE_MAKEFILE_GENERATOR}"
		die "Value ${CMAKE_MAKEFILE_GENERATOR} is not supported"
		;;
esac

if [[ ${PN} != cmake ]]; then
	BDEPEND+=" dev-util/cmake"
fi

# @FUNCTION: _cmake_banned_func
# @INTERNAL
# @DESCRIPTION:
# Banned functions are banned.
_cmake_banned_func() {
	die "${FUNCNAME[1]} is banned. use -D$1<related_CMake_variable>=\"\$(usex $2)\" instead"
}

# Determine using IN or OUT source build
_cmake_check_build_dir() {
	: ${CMAKE_USE_DIR:=${S}}
	if [[ -n ${CMAKE_IN_SOURCE_BUILD} ]]; then
		# we build in source dir
		BUILD_DIR="${CMAKE_USE_DIR}"
	fi

	mkdir -p "${BUILD_DIR}" || die
	einfo "Working in BUILD_DIR: \"$BUILD_DIR\""
}

# @FUNCTION: cmake_comment_add_subdirectory
# @USAGE: <subdirectory>
# @DESCRIPTION:
# Comment out one or more add_subdirectory calls in CMakeLists.txt in the current directory
cmake_comment_add_subdirectory() {
	if [[ -z ${1} ]]; then
		die "comment_add_subdirectory must be passed at least one directory name to comment"
	fi

	if [[ -e "CMakeLists.txt" ]]; then
		local d
		for d in $@; do
			sed -e "/add_subdirectory[[:space:]]*([[:space:]]*${d//\//\\/}[[:space:]]*)/I s/^/#DONOTCOMPILE /" \
				-i CMakeLists.txt || die "failed to comment add_subdirectory(${d})"
		done
	fi
}

# @FUNCTION: comment_add_subdirectory
# @INTERNAL
# @DESCRIPTION:
# Banned. Use cmake_comment_add_subdirectory instead.
comment_add_subdirectory() {
	die "comment_add_subdirectory is banned. Use cmake_comment_add_subdirectory instead"
}

# @FUNCTION: cmake-utils_use_with
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DWITH_FOO=$(usex foo) instead.
cmake-utils_use_with() { _cmake_banned_func WITH_ "$@" ; }

# @FUNCTION: cmake-utils_use_enable
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DENABLE_FOO=$(usex foo) instead.
cmake-utils_use_enable() { _cmake_banned_func ENABLE_ "$@" ; }

# @FUNCTION: cmake_use_find_package
# @USAGE: <USE flag> <package name>
# @DESCRIPTION:
# Based on use_enable. See ebuild(5).
#
# `cmake_use_find_package foo LibFoo` echoes -DCMAKE_DISABLE_FIND_PACKAGE_LibFoo=OFF
# if foo is enabled and -DCMAKE_DISABLE_FIND_PACKAGE_LibFoo=ON if it is disabled.
# This can be used to make find_package optional.
cmake_use_find_package() {
	debug-print-function ${FUNCNAME} "$@"

	if [[ "$#" != 2 || -z $1 ]] ; then
		die "Usage: cmake_use_find_package <USE flag> <package name>"
	fi

	echo "-DCMAKE_DISABLE_FIND_PACKAGE_$2=$(use $1 && echo OFF || echo ON)"
}

# @FUNCTION: cmake-utils_use_disable
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DDISABLE_FOO=$(usex !foo) instead.
cmake-utils_use_disable() { _cmake_banned_func DISABLE_ "$@" ; }

# @FUNCTION: cmake-utils_use_no
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DNO_FOO=$(usex !foo) instead.
cmake-utils_use_no() { _cmake_banned_func NO_ "$@" ; }

# @FUNCTION: cmake-utils_use_want
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DWANT_FOO=$(usex foo) instead.
cmake-utils_use_want() { _cmake_banned_func WANT_ "$@" ; }

# @FUNCTION: cmake-utils_use_build
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DBUILD_FOO=$(usex foo) instead.
cmake-utils_use_build() { _cmake_banned_func BUILD_ "$@" ; }

# @FUNCTION: cmake-utils_use_has
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DHAVE_FOO=$(usex foo) instead.
cmake-utils_use_has() { _cmake_banned_func HAVE_ "$@" ; }

# @FUNCTION: cmake-utils_use_use
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DUSE_FOO=$(usex foo) instead.
cmake-utils_use_use() { _cmake_banned_func USE_ "$@" ; }

# @FUNCTION: cmake-utils_use
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DFOO=$(usex foo) instead.
cmake-utils_use() { _cmake_banned_func "" "$@" ; }

# @FUNCTION: cmake-utils_useno
# @INTERNAL
# @DESCRIPTION:
# Banned. Use -DNOFOO=$(usex !foo) instead.
cmake-utils_useno() { _cmake_banned_func "" "$@" ; }

# Internal function for modifying hardcoded definitions.
# Removes dangerous definitions that override Gentoo settings.
_cmake_modify-cmakelists() {
	debug-print-function ${FUNCNAME} "$@"

	# Only edit the files once
	grep -qs "<<< Gentoo configuration >>>" "${CMAKE_USE_DIR}"/CMakeLists.txt && return 0

	# Comment out all set (<some_should_be_user_defined_variable> value)
	find "${CMAKE_USE_DIR}" -name CMakeLists.txt -exec sed \
		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_BUILD_TYPE\([[:space:]].*)\|)\)/I{s/^/#_cmake_modify_IGNORE /g}' \
		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_COLOR_MAKEFILE[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' \
		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_INSTALL_PREFIX[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' \
		-e '/^[[:space:]]*set[[:space:]]*([[:space:]]*CMAKE_VERBOSE_MAKEFILE[[:space:]].*)/I{s/^/#_cmake_modify_IGNORE /g}' \
		-i {} + || die "${LINENO}: failed to disable hardcoded settings"
	local x
	for x in $(find "${CMAKE_USE_DIR}" -name CMakeLists.txt -exec grep -l "^#_cmake_modify_IGNORE" {} +;); do
		einfo "Hardcoded definition(s) removed in $(echo "${x}" | cut -c $((${#CMAKE_USE_DIR}+2))-):"
		einfo "$(grep -se '^#_cmake_modify_IGNORE' ${x} | cut -c 22-99)"
	done

	# NOTE Append some useful summary here
	cat >> "${CMAKE_USE_DIR}"/CMakeLists.txt <<- _EOF_ || die

		MESSAGE(STATUS "<<< Gentoo configuration >>>
		Build type      \${CMAKE_BUILD_TYPE}
		Install path    \${CMAKE_INSTALL_PREFIX}
		Compiler flags:
		C               \${CMAKE_C_FLAGS}
		C++             \${CMAKE_CXX_FLAGS}
		Linker flags:
		Executable      \${CMAKE_EXE_LINKER_FLAGS}
		Module          \${CMAKE_MODULE_LINKER_FLAGS}
		Shared          \${CMAKE_SHARED_LINKER_FLAGS}\n")
	_EOF_
}

# @FUNCTION: cmake_src_prepare
# @DESCRIPTION:
# Apply ebuild and user patches.
cmake_src_prepare() {
	debug-print-function ${FUNCNAME} "$@"

	pushd "${S}" > /dev/null || die

	default_src_prepare
	_cmake_check_build_dir

	# check if CMakeLists.txt exist and if no then die
	if [[ ! -e ${CMAKE_USE_DIR}/CMakeLists.txt ]] ; then
		eerror "Unable to locate CMakeLists.txt under:"
		eerror "\"${CMAKE_USE_DIR}/CMakeLists.txt\""
		eerror "Consider not inheriting the cmake eclass."
		die "FATAL: Unable to find CMakeLists.txt"
	fi

	# if ninja is enabled but not installed, the build could fail
	# this could happen if ninja is manually enabled (eg. make.conf) but not installed
	if [[ ${CMAKE_MAKEFILE_GENERATOR} == ninja ]] && ! has_version -b dev-util/ninja; then
		eerror "CMAKE_MAKEFILE_GENERATOR is set to ninja, but ninja is not installed."
		die "Please install dev-util/ninja or unset CMAKE_MAKEFILE_GENERATOR."
	fi

	local modules_list
	if [[ $(declare -p CMAKE_REMOVE_MODULES_LIST) == "declare -a"* ]]; then
		modules_list=( "${CMAKE_REMOVE_MODULES_LIST[@]}" )
	else
		modules_list=( ${CMAKE_REMOVE_MODULES_LIST} )
	fi

	local name
	for name in "${modules_list[@]}" ; do
		find "${S}" -name ${name}.cmake -exec rm -v {} + || die
	done

	# Remove dangerous things.
	_cmake_modify-cmakelists

	popd > /dev/null || die

	# make ${S} read-only in order to detect broken build-systems
	if [[ ${CMAKE_QA_SRC_DIR_READONLY} && ! ${CMAKE_IN_SOURCE_BUILD} ]]; then
		chmod -R a-w "${S}"
	fi

	_CMAKE_SRC_PREPARE_HAS_RUN=1
}

# @VARIABLE: mycmakeargs
# @DEFAULT_UNSET
# @DESCRIPTION:
# Optional cmake defines as a bash array. Should be defined before calling
# src_configure.
# @CODE
# src_configure() {
# 	local mycmakeargs=(
# 		$(cmake_use_with openconnect)
# 	)
#
# 	cmake_src_configure
# }
# @CODE

# @FUNCTION: cmake_src_configure
# @DESCRIPTION:
# General function for configuring with cmake. Default behaviour is to start an
# out-of-source build.
cmake_src_configure() {
	debug-print-function ${FUNCNAME} "$@"

	[[ ${_CMAKE_SRC_PREPARE_HAS_RUN} ]] || \
		die "FATAL: cmake_src_prepare has not been run"

	_cmake_check_build_dir

	# Fix xdg collision with sandbox
	xdg_environment_reset

	# @SEE CMAKE_BUILD_TYPE
	if [[ ${CMAKE_BUILD_TYPE} = Gentoo ]]; then
		# Handle release builds
		if ! in_iuse debug || ! use debug; then
			local CPPFLAGS=${CPPFLAGS}
			append-cppflags -DNDEBUG
		fi
	fi

	# Prepare Gentoo override rules (set valid compiler, append CPPFLAGS etc.)
	local build_rules=${BUILD_DIR}/gentoo_rules.cmake

	cat > "${build_rules}" <<- _EOF_ || die
		SET (CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "ASM compile command" FORCE)
		SET (CMAKE_ASM-ATT_COMPILE_OBJECT "<CMAKE_ASM-ATT_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c -x assembler <SOURCE>" CACHE STRING "ASM-ATT compile command" FORCE)
		SET (CMAKE_ASM-ATT_LINK_FLAGS "-nostdlib" CACHE STRING "ASM-ATT link flags" FORCE)
		SET (CMAKE_C_COMPILE_OBJECT "<CMAKE_C_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C compile command" FORCE)
		SET (CMAKE_CXX_COMPILE_OBJECT "<CMAKE_CXX_COMPILER> <DEFINES> <INCLUDES> ${CPPFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "C++ compile command" FORCE)
		SET (CMAKE_Fortran_COMPILE_OBJECT "<CMAKE_Fortran_COMPILER> <DEFINES> <INCLUDES> ${FCFLAGS} <FLAGS> -o <OBJECT> -c <SOURCE>" CACHE STRING "Fortran compile command" FORCE)
	_EOF_

	local myCC=$(tc-getCC) myCXX=$(tc-getCXX) myFC=$(tc-getFC)

	# !!! IMPORTANT NOTE !!!
	# Single slash below is intentional. CMake is weird and wants the
	# CMAKE_*_VARIABLES split into two elements: the first one with
	# compiler path, and the second one with all command-line options,
	# space separated.
	local toolchain_file=${BUILD_DIR}/gentoo_toolchain.cmake
	cat > ${toolchain_file} <<- _EOF_ || die
		SET (CMAKE_ASM_COMPILER "${myCC/ /;}")
		SET (CMAKE_ASM-ATT_COMPILER "${myCC/ /;}")
		SET (CMAKE_C_COMPILER "${myCC/ /;}")
		SET (CMAKE_CXX_COMPILER "${myCXX/ /;}")
		SET (CMAKE_Fortran_COMPILER "${myFC/ /;}")
		SET (CMAKE_AR $(type -P $(tc-getAR)) CACHE FILEPATH "Archive manager" FORCE)
		SET (CMAKE_RANLIB $(type -P $(tc-getRANLIB)) CACHE FILEPATH "Archive index generator" FORCE)
		SET (CMAKE_SYSTEM_PROCESSOR "${CHOST%%-*}")
	_EOF_

	# We are using the C compiler for assembly by default.
	local -x ASMFLAGS=${CFLAGS}
	local -x PKG_CONFIG=$(tc-getPKG_CONFIG)

	if tc-is-cross-compiler; then
		local sysname
		case "${KERNEL:-linux}" in
			Cygwin) sysname="CYGWIN_NT-5.1" ;;
			HPUX) sysname="HP-UX" ;;
			linux) sysname="Linux" ;;
			Winnt)
				sysname="Windows"
				cat >> "${toolchain_file}" <<- _EOF_ || die
					SET (CMAKE_RC_COMPILER $(tc-getRC))
				_EOF_
				;;
			*) sysname="${KERNEL}" ;;
		esac

		cat >> "${toolchain_file}" <<- _EOF_ || die
			SET (CMAKE_SYSTEM_NAME "${sysname}")
		_EOF_

		if [ "${SYSROOT:-/}" != "/" ] ; then
			# When cross-compiling with a sysroot (e.g. with crossdev's emerge wrappers)
			# we need to tell cmake to use libs/headers from the sysroot but programs from / only.
			cat >> "${toolchain_file}" <<- _EOF_ || die
				SET (CMAKE_FIND_ROOT_PATH "${SYSROOT}")
				SET (CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
				SET (CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
				SET (CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
			_EOF_
		fi
	fi

	if use prefix-guest; then
		cat >> "${build_rules}" <<- _EOF_ || die
			# in Prefix we need rpath and must ensure cmake gets our default linker path
			# right ... except for Darwin hosts
			IF (NOT APPLE)
			SET (CMAKE_SKIP_RPATH OFF CACHE BOOL "" FORCE)
			SET (CMAKE_PLATFORM_REQUIRED_RUNTIME_PATH "${EPREFIX}/usr/${CHOST}/lib/gcc;${EPREFIX}/usr/${CHOST}/lib;${EPREFIX}/usr/$(get_libdir);${EPREFIX}/$(get_libdir)"
			CACHE STRING "" FORCE)

			ELSE ()

			SET (CMAKE_PREFIX_PATH "${EPREFIX}/usr" CACHE STRING "" FORCE)
			SET (CMAKE_MACOSX_RPATH ON CACHE BOOL "" FORCE)
			SET (CMAKE_SKIP_BUILD_RPATH OFF CACHE BOOL "" FORCE)
			SET (CMAKE_SKIP_RPATH OFF CACHE BOOL "" FORCE)
			SET (CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE CACHE BOOL "" FORCE)

			ENDIF (NOT APPLE)
		_EOF_
	fi

	# Common configure parameters (invariants)
	local common_config=${BUILD_DIR}/gentoo_common_config.cmake
	local libdir=$(get_libdir)
	cat > "${common_config}" <<- _EOF_ || die
		SET (CMAKE_GENTOO_BUILD ON CACHE BOOL "Indicate Gentoo package build")
		SET (LIB_SUFFIX ${libdir/lib} CACHE STRING "library path suffix" FORCE)
		SET (CMAKE_INSTALL_LIBDIR ${libdir} CACHE PATH "Output directory for libraries")
		SET (CMAKE_INSTALL_INFODIR "${EPREFIX}/usr/share/info" CACHE PATH "")
		SET (CMAKE_INSTALL_MANDIR "${EPREFIX}/usr/share/man" CACHE PATH "")
		SET (CMAKE_USER_MAKE_RULES_OVERRIDE "${build_rules}" CACHE FILEPATH "Gentoo override rules")
		SET (CMAKE_INSTALL_DOCDIR "${EPREFIX}/usr/share/doc/${PF}" CACHE PATH "")
		SET (BUILD_SHARED_LIBS ON CACHE BOOL "")
	_EOF_
	if [[ "${NOCOLOR}" = true || "${NOCOLOR}" = yes ]]; then
		echo 'SET (CMAKE_COLOR_MAKEFILE OFF CACHE BOOL "pretty colors during make" FORCE)' >> "${common_config}" || die
	fi

	# Wipe the default optimization flags out of CMake
	if [[ ${CMAKE_BUILD_TYPE} != Gentoo ]]; then
		cat >> ${common_config} <<- _EOF_ || die
			SET (CMAKE_ASM_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_ASM-ATT_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_C_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_CXX_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_Fortran_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_EXE_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_MODULE_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_SHARED_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
			SET (CMAKE_STATIC_LINKER_FLAGS_${CMAKE_BUILD_TYPE^^} "" CACHE STRING "")
		_EOF_
	fi

	# Make the array a local variable since <=portage-2.1.6.x does not support
	# global arrays (see bug #297255). But first make sure it is initialised.
	[[ -z ${mycmakeargs} ]] && declare -a mycmakeargs=()
	local mycmakeargstype=$(declare -p mycmakeargs 2>&-)
	if [[ "${mycmakeargstype}" != "declare -a mycmakeargs="* ]]; then
		die "mycmakeargs must be declared as array"
	fi

	local mycmakeargs_local=( "${mycmakeargs[@]}" )

	local warn_unused_cli=""
	if [[ ${CMAKE_WARN_UNUSED_CLI} == no ]] ; then
		warn_unused_cli="--no-warn-unused-cli"
	fi

	local generator_name
	case ${CMAKE_MAKEFILE_GENERATOR} in
		ninja) generator_name="Ninja" ;;
		emake) generator_name="Unix Makefiles" ;;
	esac

	# Common configure parameters (overridable)
	# NOTE CMAKE_BUILD_TYPE can be only overridden via CMAKE_BUILD_TYPE eclass variable
	# No -DCMAKE_BUILD_TYPE=xxx definitions will be in effect.
	local cmakeargs=(
		${warn_unused_cli}
		-C "${common_config}"
		-G "${generator_name}"
		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr"
		"${mycmakeargs_local[@]}"
		-DCMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE}"
		-DCMAKE_TOOLCHAIN_FILE="${toolchain_file}"
		"${MYCMAKEARGS}"
	)

	if [[ -n "${CMAKE_EXTRA_CACHE_FILE}" ]] ; then
		cmakeargs+=( -C "${CMAKE_EXTRA_CACHE_FILE}" )
	fi

	pushd "${BUILD_DIR}" > /dev/null || die
	debug-print "${LINENO} ${ECLASS} ${FUNCNAME}: mycmakeargs is ${mycmakeargs_local[*]}"
	echo "${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}"
	"${CMAKE_BINARY}" "${cmakeargs[@]}" "${CMAKE_USE_DIR}" || die "cmake failed"
	popd > /dev/null || die
}

# @FUNCTION: cmake_src_compile
# @DESCRIPTION:
# General function for compiling with cmake.
# Automatically detects the build type. All arguments are passed to emake.
cmake_src_compile() {
	debug-print-function ${FUNCNAME} "$@"

	cmake_build "$@"
}

# @FUNCTION: cmake_build
# @DESCRIPTION:
# Function for building the package. Automatically detects the build type.
# All arguments are passed to emake.
cmake_build() {
	debug-print-function ${FUNCNAME} "$@"

	_cmake_check_build_dir
	pushd "${BUILD_DIR}" > /dev/null || die

	case ${CMAKE_MAKEFILE_GENERATOR} in
		emake)
			[[ -e Makefile ]] || die "Makefile not found. Error during configure stage."
			[[ "${CMAKE_VERBOSE}" != "OFF" ]] && local verbosity="VERBOSE=1"
			emake "${verbosity} "$@"
			;;
		ninja)
			[[ -e build.ninja ]] || die "build.ninja not found. Error during configure stage."
			eninja "$@"
			;;
	esac

	popd > /dev/null || die
}

# @FUNCTION: cmake-utils_src_make
# @INTERNAL
# @DESCRIPTION:
# Banned. Use cmake_build instead.
cmake-utils_src_make() {
	die "cmake_src_make is banned. Use cmake_build instead"
}

# @FUNCTION: cmake_src_test
# @DESCRIPTION:
# Function for testing the package. Automatically detects the build type.
cmake_src_test() {
	debug-print-function ${FUNCNAME} "$@"

	_cmake_check_build_dir
	pushd "${BUILD_DIR}" > /dev/null || die
	[[ -e CTestTestfile.cmake ]] || { echo "No tests found. Skipping."; return 0 ; }

	[[ -n ${TEST_VERBOSE} ]] && myctestargs+=( --extra-verbose --output-on-failure )

	set -- ctest -j "$(makeopts_jobs)" --test-load "$(makeopts_loadavg)" "${myctestargs[@]}" "$@"
	echo "$@" >&2
	if "$@" ; then
		einfo "Tests succeeded."
		popd > /dev/null || die
		return 0
	else
		if [[ -n "${CMAKE_YES_I_WANT_TO_SEE_THE_TEST_LOG}" ]] ; then
			# on request from Diego
			eerror "Tests failed. Test log ${BUILD_DIR}/Testing/Temporary/LastTest.log follows:"
			eerror "--START TEST LOG--------------------------------------------------------------"
			cat "${BUILD_DIR}/Testing/Temporary/LastTest.log"
			eerror "--END TEST LOG----------------------------------------------------------------"
			die "Tests failed."
		else
			die "Tests failed. When you file a bug, please attach the following file: \n\t${BUILD_DIR}/Testing/Temporary/LastTest.log"
		fi

		# die might not die due to nonfatal
		popd > /dev/null || die
		return 1
	fi
}

# @FUNCTION: cmake_src_install
# @DESCRIPTION:
# Function for installing the package. Automatically detects the build type.
cmake_src_install() {
	debug-print-function ${FUNCNAME} "$@"

	_cmake_check_build_dir
	pushd "${BUILD_DIR}" > /dev/null || die
	DESTDIR="${D}" ${CMAKE_MAKEFILE_GENERATOR} install "$@" ||
		die "died running ${CMAKE_MAKEFILE_GENERATOR} install"
	popd > /dev/null || die

	pushd "${S}" > /dev/null || die
	einstalldocs
	popd > /dev/null || die
}

fi