summaryrefslogtreecommitdiff
blob: ec22221535748bbd127ecd6e92094f5c95ca6432 (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
# Copyright 1999-2020 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

PYTHON_COMPAT=( python3_{6..9} )
inherit cmake llvm llvm.org multilib-minimal pax-utils \
	python-single-r1 toolchain-funcs

DESCRIPTION="C language family frontend for LLVM"
HOMEPAGE="https://llvm.org/"
LLVM_COMPONENTS=( clang clang-tools-extra )
LLVM_TEST_COMPONENTS=(
	llvm/lib/Testing/Support
	llvm/utils/{lit,llvm-lit,unittest}
)
llvm.org_set_globals

# Keep in sync with sys-devel/llvm
ALL_LLVM_EXPERIMENTAL_TARGETS=( ARC AVR )
ALL_LLVM_TARGETS=( AArch64 AMDGPU ARM BPF Hexagon Lanai Mips MSP430
	NVPTX PowerPC RISCV Sparc SystemZ WebAssembly X86 XCore
	"${ALL_LLVM_EXPERIMENTAL_TARGETS[@]}" )
ALL_LLVM_TARGETS=( "${ALL_LLVM_TARGETS[@]/#/llvm_targets_}" )
LLVM_TARGET_USEDEPS=${ALL_LLVM_TARGETS[@]/%/?}

# MSVCSetupApi.h: MIT
# sorttable.js: MIT

LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA MIT"
SLOT="$(ver_cut 1)"
KEYWORDS=""
IUSE="debug default-compiler-rt default-libcxx doc +static-analyzer
	test xml kernel_FreeBSD ${ALL_LLVM_TARGETS[*]}"
REQUIRED_USE="${PYTHON_REQUIRED_USE}
	|| ( ${ALL_LLVM_TARGETS[*]} )"
RESTRICT="!test? ( test )"

RDEPEND="
	~sys-devel/llvm-${PV}:${SLOT}=[debug=,${LLVM_TARGET_USEDEPS// /,},${MULTILIB_USEDEP}]
	static-analyzer? ( dev-lang/perl:* )
	xml? ( dev-libs/libxml2:2=[${MULTILIB_USEDEP}] )
	${PYTHON_DEPS}"
DEPEND="${RDEPEND}"
BDEPEND="
	dev-python/sphinx
	xml? ( virtual/pkgconfig )
	${PYTHON_DEPS}"
RDEPEND="${RDEPEND}
	!<sys-devel/llvm-4.0.0_rc:0
	!sys-devel/clang:0"
PDEPEND="
	sys-devel/clang-common
	~sys-devel/clang-runtime-${PV}
	default-compiler-rt? ( =sys-libs/compiler-rt-${PV%_*}* )
	default-libcxx? ( >=sys-libs/libcxx-${PV} )"

# Multilib notes:
# 1. ABI_* flags control ABIs libclang* is built for only.
# 2. clang is always capable of compiling code for all ABIs for enabled
#    target. However, you will need appropriate crt* files (installed
#    e.g. by sys-devel/gcc and sys-libs/glibc).
# 3. ${CHOST}-clang wrappers are always installed for all ABIs included
#    in the current profile (i.e. alike supported by sys-devel/gcc).
#
# Therefore: use sys-devel/clang[${MULTILIB_USEDEP}] only if you need
# multilib clang* libraries (not runtime, not wrappers).

PATCHES=(
	# fix simultaneous linking to .a and dylib
	"${FILESDIR}"/10.0.1/0003-clang-tools-extra-Prevent-linking-to-duplicate-.a-li.patch
	"${FILESDIR}"/10.0.1/0004-clang-Avoid-linking-c-index-test-to-duplicate-librar.patch
)

pkg_setup() {
	LLVM_MAX_SLOT=${SLOT} llvm_pkg_setup
	python-single-r1_pkg_setup
}

src_prepare() {
	# create extra parent dir for relative CLANG_RESOURCE_DIR access
	mkdir -p x/y || die
	BUILD_DIR=${WORKDIR}/x/y/clang

	llvm.org_src_prepare

	mv ../clang-tools-extra tools/extra || die
}

check_distribution_components() {
	if [[ ${CMAKE_MAKEFILE_GENERATOR} == ninja ]]; then
		local all_targets=() my_targets=() l
		cd "${BUILD_DIR}" || die

		while read -r l; do
			if [[ ${l} == install-*-stripped:* ]]; then
				l=${l#install-}
				l=${l%%-stripped*}

				case ${l} in
					# meta-targets
					clang-libraries|distribution)
						continue
						;;
					# tools
					clang|clangd|clang-*)
						;;
					# static libraries
					clang*|findAllSymbols)
						continue
						;;
					# headers for clang-tidy static library
					clang-tidy-headers)
						continue
						;;
					# conditional to USE=doc
					docs-clang-html|docs-clang-tools-html)
						continue
						;;
				esac

				all_targets+=( "${l}" )
			fi
		done < <(ninja -t targets all)

		while read -r l; do
			my_targets+=( "${l}" )
		done < <(get_distribution_components $"\n")

		local add=() remove=()
		for l in "${all_targets[@]}"; do
			if ! has "${l}" "${my_targets[@]}"; then
				add+=( "${l}" )
			fi
		done
		for l in "${my_targets[@]}"; do
			if ! has "${l}" "${all_targets[@]}"; then
				remove+=( "${l}" )
			fi
		done

		if [[ ${#add[@]} -gt 0 || ${#remove[@]} -gt 0 ]]; then
			eqawarn "get_distribution_components() is outdated!"
			eqawarn "   Add: ${add[*]}"
			eqawarn "Remove: ${remove[*]}"
		fi
		cd - >/dev/null || die
	fi
}

get_distribution_components() {
	local sep=${1-;}

	local out=(
		# common stuff
		clang-cmake-exports
		clang-headers
		clang-resource-headers
		libclang-headers

		# libs
		clang-cpp
		libclang
	)

	if multilib_is_native_abi; then
		out+=(
			# common stuff
			bash-autocomplete
			libclang-python-bindings

			# tools
			c-index-test
			clang
			clang-format
			clang-import-test
			clang-offload-bundler
			clang-offload-wrapper
			clang-refactor
			clang-rename
			clang-scan-deps
			diagtool
			hmaptool

			# extra tools
			clang-apply-replacements
			clang-change-namespace
			clang-doc
			clang-include-fixer
			clang-move
			clang-query
			clang-reorder-fields
			clang-tidy
			clangd
			find-all-symbols
			modularize
			pp-trace

			# manpages
			docs-clang-man
			docs-clang-tools-man
		)

		use doc && out+=(
			docs-clang-html
			docs-clang-tools-html
		)

		use static-analyzer && out+=(
			clang-check
			clang-extdef-mapping
			scan-build
			scan-view
		)
	fi

	printf "%s${sep}" "${out[@]}"
}

multilib_src_configure() {
	local llvm_version=$(llvm-config --version) || die
	local clang_version=$(ver_cut 1-3 "${llvm_version}")

	local mycmakeargs=(
		-DLLVM_CMAKE_PATH="${EPREFIX}/usr/lib/llvm/${SLOT}/$(get_libdir)/cmake/llvm"
		-DCMAKE_INSTALL_PREFIX="${EPREFIX}/usr/lib/llvm/${SLOT}"
		-DCMAKE_INSTALL_MANDIR="${EPREFIX}/usr/lib/llvm/${SLOT}/share/man"
		# relative to bindir
		-DCLANG_RESOURCE_DIR="../../../../lib/clang/${clang_version}"

		-DBUILD_SHARED_LIBS=OFF
		-DCLANG_LINK_CLANG_DYLIB=ON
		-DLLVM_DISTRIBUTION_COMPONENTS=$(get_distribution_components)

		-DLLVM_TARGETS_TO_BUILD="${LLVM_TARGETS// /;}"
		-DLLVM_BUILD_TESTS=$(usex test)

		# these are not propagated reliably, so redefine them
		-DLLVM_ENABLE_EH=ON
		-DLLVM_ENABLE_RTTI=ON

		-DCMAKE_DISABLE_FIND_PACKAGE_LibXml2=$(usex !xml)
		# libgomp support fails to find headers without explicit -I
		# furthermore, it provides only syntax checking
		-DCLANG_DEFAULT_OPENMP_RUNTIME=libomp

		# override default stdlib and rtlib
		-DCLANG_DEFAULT_CXX_STDLIB=$(usex default-libcxx libc++ "")
		-DCLANG_DEFAULT_RTLIB=$(usex default-compiler-rt compiler-rt "")

		-DCLANG_ENABLE_ARCMT=$(usex static-analyzer)
		-DCLANG_ENABLE_STATIC_ANALYZER=$(usex static-analyzer)
	)
	use test && mycmakeargs+=(
		-DLLVM_MAIN_SRC_DIR="${WORKDIR}/llvm"
		-DLLVM_LIT_ARGS="$(get_lit_flags)"
	)

	if multilib_is_native_abi; then
		mycmakeargs+=(
			# normally copied from LLVM_INCLUDE_DOCS but the latter
			# is lacking value in stand-alone builds
			-DCLANG_INCLUDE_DOCS=ON
			-DCLANG_TOOLS_EXTRA_INCLUDE_DOCS=ON
			-DLLVM_BUILD_DOCS=ON
			-DLLVM_ENABLE_SPHINX=ON
			-DCLANG_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/html"
			-DCLANG-TOOLS_INSTALL_SPHINX_HTML_DIR="${EPREFIX}/usr/share/doc/${PF}/tools-extra"
			-DSPHINX_WARNINGS_AS_ERRORS=OFF
		)
	else
		mycmakeargs+=(
			-DLLVM_TOOL_CLANG_TOOLS_EXTRA_BUILD=OFF
		)
	fi

	if [[ -n ${EPREFIX} ]]; then
		mycmakeargs+=(
			-DGCC_INSTALL_PREFIX="${EPREFIX}/usr"
		)
	fi

	if tc-is-cross-compiler; then
		[[ -x "/usr/bin/clang-tblgen" ]] \
			|| die "/usr/bin/clang-tblgen not found or usable"
		mycmakeargs+=(
			-DCMAKE_CROSSCOMPILING=ON
			-DCLANG_TABLEGEN=/usr/bin/clang-tblgen
		)
	fi

	# LLVM can have very high memory consumption while linking,
	# exhausting the limit on 32-bit linker executable
	use x86 && local -x LDFLAGS="${LDFLAGS} -Wl,--no-keep-memory"

	# LLVM_ENABLE_ASSERTIONS=NO does not guarantee this for us, #614844
	use debug || local -x CPPFLAGS="${CPPFLAGS} -DNDEBUG"
	cmake_src_configure

	multilib_is_native_abi && check_distribution_components
}

multilib_src_compile() {
	cmake_src_compile

	# provide a symlink for tests
	if [[ ! -L ${WORKDIR}/lib/clang ]]; then
		mkdir -p "${WORKDIR}"/lib || die
		ln -s "${BUILD_DIR}/$(get_libdir)/clang" "${WORKDIR}"/lib/clang || die
	fi
}

multilib_src_test() {
	# respect TMPDIR!
	local -x LIT_PRESERVES_TMP=1
	cmake_build check-clang
	multilib_is_native_abi &&
		cmake_build check-clang-tools check-clangd
}

src_install() {
	MULTILIB_WRAPPED_HEADERS=(
		/usr/include/clang/Config/config.h
	)

	multilib-minimal_src_install

	# Move runtime headers to /usr/lib/clang, where they belong
	mv "${ED}"/usr/include/clangrt "${ED}"/usr/lib/clang || die
	# move (remaining) wrapped headers back
	mv "${ED}"/usr/include "${ED}"/usr/lib/llvm/${SLOT}/include || die

	# Apply CHOST and version suffix to clang tools
	# note: we use two version components here (vs 3 in runtime path)
	local llvm_version=$(llvm-config --version) || die
	local clang_version=$(ver_cut 1 "${llvm_version}")
	local clang_full_version=$(ver_cut 1-3 "${llvm_version}")
	local clang_tools=( clang clang++ clang-cl clang-cpp )
	local abi i

	# cmake gives us:
	# - clang-X
	# - clang -> clang-X
	# - clang++, clang-cl, clang-cpp -> clang
	# we want to have:
	# - clang-X
	# - clang++-X, clang-cl-X, clang-cpp-X -> clang-X
	# - clang, clang++, clang-cl, clang-cpp -> clang*-X
	# also in CHOST variant
	for i in "${clang_tools[@]:1}"; do
		rm "${ED}/usr/lib/llvm/${SLOT}/bin/${i}" || die
		dosym "clang-${clang_version}" "/usr/lib/llvm/${SLOT}/bin/${i}-${clang_version}"
		dosym "${i}-${clang_version}" "/usr/lib/llvm/${SLOT}/bin/${i}"
	done

	# now create target symlinks for all supported ABIs
	for abi in $(get_all_abis); do
		local abi_chost=$(get_abi_CHOST "${abi}")
		for i in "${clang_tools[@]}"; do
			dosym "${i}-${clang_version}" \
				"/usr/lib/llvm/${SLOT}/bin/${abi_chost}-${i}-${clang_version}"
			dosym "${abi_chost}-${i}-${clang_version}" \
				"/usr/lib/llvm/${SLOT}/bin/${abi_chost}-${i}"
		done
	done

	# Remove unnecessary headers on FreeBSD, bug #417171
	if use kernel_FreeBSD; then
		rm "${ED}"/usr/lib/clang/${clang_full_version}/include/{std,float,iso,limits,tgmath,varargs}*.h || die
	fi
}

multilib_src_install() {
	DESTDIR=${D} cmake_build install-distribution

	# move headers to /usr/include for wrapping & ABI mismatch checks
	# (also drop the version suffix from runtime headers)
	rm -rf "${ED}"/usr/include || die
	mv "${ED}"/usr/lib/llvm/${SLOT}/include "${ED}"/usr/include || die
	mv "${ED}"/usr/lib/llvm/${SLOT}/$(get_libdir)/clang "${ED}"/usr/include/clangrt || die
}

multilib_src_install_all() {
	python_fix_shebang "${ED}"
	if use static-analyzer; then
		python_optimize "${ED}"/usr/lib/llvm/${SLOT}/share/scan-view
	fi

	docompress "/usr/lib/llvm/${SLOT}/share/man"
	# match 'html' non-compression
	use doc && docompress -x "/usr/share/doc/${PF}/tools-extra"
	# +x for some reason; TODO: investigate
	use static-analyzer && fperms a-x "/usr/lib/llvm/${SLOT}/share/man/man1/scan-build.1"
}

pkg_postinst() {
	if [[ -z ${ROOT} && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
		eselect compiler-shadow update all
	fi

	elog "You can find additional utility scripts in:"
	elog "  ${EROOT}/usr/lib/llvm/${SLOT}/share/clang"
	elog "Some of them are vim integration scripts (with instructions inside)."
	elog "The run-clang-tidy.py script requires the following additional package:"
	elog "  dev-python/pyyaml"
}

pkg_postrm() {
	if [[ -z ${ROOT} && -f ${EPREFIX}/usr/share/eselect/modules/compiler-shadow.eselect ]] ; then
		eselect compiler-shadow clean all
	fi
}