sys-devel/clang-common: Add 18.0.0_pre20231025 snapshot

Signed-off-by: Michał Górny <mgorny@gentoo.org>

2 files changed, 228 insertions, 0 deletions

diff --git a/sys-devel/clang-common/Manifest b/sys-devel/clang-common/Manifest
index ce67cad96b48..781040d23486 100644
--- a/sys-devel/clang-common/Manifest
+++ b/sys-devel/clang-common/Manifest
@@ -7,4 +7,5 @@ DIST llvm-project-16.0.6.src.tar.xz.sig 566 BLAKE2B 2060cebd5ed57cb8a86a44238c43
 DIST llvm-project-17.0.3.src.tar.xz 127843636 BLAKE2B 5331d9b545faab282a4caec9ee688d0f1e0615a56a26aa24d8f6fbbae10258e132d94634dab2f7bd69ada06bb28dc899730b9cd774a1086d7c03d5706de6d997 SHA512 44f37dea494a66a83c252e28d7d0517c3b2eed5b196565432dc663c7914bd66d665c8d13479e2776a14cac1905faf6972f986176722c053b58528570a6e68316
 DIST llvm-project-17.0.3.src.tar.xz.sig 438 BLAKE2B 045e7ca82c8d9b3f182e4fa331ec841b24777ac1888f10de435a389ae3a88172e0559a3fca0c2d37cc874464411ae50d7bc0d0829455149a8de8b953ef6c98c7 SHA512 95f9e6729074cfd71b0ffb21e423cd0fd87763268c24e0513f7afd6a85d08061658c44c03ea3ea3b6e3cc7051676d44c41a791e6905c8abb456d48a3762fc152
 DIST llvm-project-5d35273a32d239b7407338e13ed71b59174d6536.tar.gz 198787569 BLAKE2B 7f4f1eb490028e18826a6ebade649a682e433252ceab1f3dcd9e50c34f24e7ef108c3325ec209a4d4fa1ded8e09ebda4980cb9d8ddce8a0d517923d6c38b8f4a SHA512 4d263561fb12cc07a5e8f7ed2f8f22a3645aa959cf963a6a735a9bb93cfc2a51bf7e4d36b54e8425725029cfcfd868dfcc53af95d26d84be72be124d8c564271
+DIST llvm-project-a7700985577694d6cc2498833f27b4fb5eeaf252.tar.gz 199221825 BLAKE2B 047ab7c0e80e1dbbe61ebd9aaae17166665a33b5cb50beec6da2cc19bec9a16777b82c157e74f88b0678d843b200f292d696a964211a8e532f128491dc39a6e4 SHA512 b747210d53402ae01238fa82195fa5c1c8d1c832d976bcc996ef657ac54dacb2fb19521c6f080151e6b1af8a49ddfe58979afaa00b3f1f72dc664ac79b99a8bb
 DIST llvm-project-e6e90840708099425b7b69dd053634ff25d4907f.tar.gz 199022115 BLAKE2B 442aff8f561f7c5834a36b7eb217fd2b984e58af9cbcf3e6495305f386a7651e73345bbe65133af4bffaf8cb209cfb9a94fb28756ffaaaae8f7d28ec253ccb78 SHA512 fa9c180f36f4c782208ae7baff1683ee466c70f7d021b21b9cb8a8fd0f2005c0b47889d8bb37f5fb984f6b2ec26c74df60490c7b51ac3d080830e6844e33e300
diff --git a/sys-devel/clang-common/clang-common-18.0.0_pre20231025.ebuild b/sys-devel/clang-common/clang-common-18.0.0_pre20231025.ebuild
new file mode 100644
index 000000000000..b58ed6b486c2
--- /dev/null
+++ b/sys-devel/clang-common/clang-common-18.0.0_pre20231025.ebuild
@@ -0,0 +1,227 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit bash-completion-r1 llvm.org multilib
+
+DESCRIPTION="Common files shared between multiple slots of clang"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA"
+SLOT="0"
+IUSE="
+	default-compiler-rt default-libcxx default-lld llvm-libunwind
+	hardened
+"
+
+PDEPEND="
+	sys-devel/clang:*
+	default-compiler-rt? (
+		sys-devel/clang-runtime[compiler-rt]
+		llvm-libunwind? ( sys-libs/llvm-libunwind[static-libs] )
+		!llvm-libunwind? ( sys-libs/libunwind[static-libs] )
+	)
+	!default-compiler-rt? ( sys-devel/gcc )
+	default-libcxx? ( >=sys-libs/libcxx-${PV}[static-libs] )
+	!default-libcxx? ( sys-devel/gcc )
+	default-lld? ( sys-devel/lld )
+	!default-lld? ( sys-devel/binutils )
+"
+IDEPEND="
+	!default-compiler-rt? ( sys-devel/gcc-config )
+	!default-libcxx? ( sys-devel/gcc-config )
+"
+
+LLVM_COMPONENTS=( clang/utils )
+llvm.org_set_globals
+
+pkg_pretend() {
+	[[ ${CLANG_IGNORE_DEFAULT_RUNTIMES} ]] && return
+
+	local flag missing_flags=()
+	for flag in default-{compiler-rt,libcxx,lld}; do
+		if ! use "${flag}" && has_version "sys-devel/clang[${flag}]"; then
+			missing_flags+=( "${flag}" )
+		fi
+	done
+
+	if [[ ${missing_flags[@]} ]]; then
+		eerror "It seems that you have the following flags set on sys-devel/clang:"
+		eerror
+		eerror "  ${missing_flags[*]}"
+		eerror
+		eerror "The default runtimes are now set via flags on sys-devel/clang-common."
+		eerror "The build is being aborted to prevent breakage.  Please either set"
+		eerror "the respective flags on this ebuild, e.g.:"
+		eerror
+		eerror "  sys-devel/clang-common ${missing_flags[*]}"
+		eerror
+		eerror "or build with CLANG_IGNORE_DEFAULT_RUNTIMES=1."
+		die "Mismatched defaults detected between sys-devel/clang and sys-devel/clang-common"
+	fi
+}
+
+doclang_cfg() {
+	local triple="${1}"
+
+	local tool
+	for tool in ${triple}-clang{,++}; do
+		newins - "${tool}.cfg" <<-EOF
+			# This configuration file is used by ${tool} driver.
+			@gentoo-common.cfg
+			@gentoo-common-ld.cfg
+		EOF
+	done
+
+	newins - "${triple}-clang-cpp.cfg" <<-EOF
+		# This configuration file is used by the ${triple}-clang-cpp driver.
+		@gentoo-common.cfg
+	EOF
+
+	# Install symlinks for triples with other vendor strings since some
+	# programs insist on mangling the triple.
+	local vendor
+	for vendor in gentoo pc unknown; do
+		local vendor_triple="${triple%%-*}-${vendor}-${triple#*-*-}"
+		for tool in clang{,++,-cpp}; do
+			if [[ ! -f "${ED}/etc/clang/${vendor_triple}-${tool}.cfg" ]]; then
+				dosym "${triple}-${tool}.cfg" "/etc/clang/${vendor_triple}-${tool}.cfg"
+			fi
+		done
+	done
+}
+
+src_install() {
+	newbashcomp bash-autocomplete.sh clang
+
+	insinto /etc/clang
+	newins - gentoo-runtimes.cfg <<-EOF
+		# This file is initially generated by sys-devel/clang-runtime.
+		# It is used to control the default runtimes using by clang.
+
+		--rtlib=$(usex default-compiler-rt compiler-rt libgcc)
+		--unwindlib=$(usex default-compiler-rt libunwind libgcc)
+		--stdlib=$(usex default-libcxx libc++ libstdc++)
+		-fuse-ld=$(usex default-lld lld bfd)
+	EOF
+
+	newins - gentoo-gcc-install.cfg <<-EOF
+		# This file is maintained by gcc-config.
+		# It is used to specify the selected GCC installation.
+	EOF
+
+	newins - gentoo-common.cfg <<-EOF
+		# This file contains flags common to clang, clang++ and clang-cpp.
+		@gentoo-runtimes.cfg
+		@gentoo-gcc-install.cfg
+		@gentoo-hardened.cfg
+		# bug #870001
+		-include "${EPREFIX}/usr/include/gentoo/maybe-stddefs.h"
+	EOF
+
+	# clang-cpp does not like link args being passed to it when directly
+	# invoked, so use a separate configuration file.
+	newins - gentoo-common-ld.cfg <<-EOF
+		# This file contains flags common to clang and clang++
+		@gentoo-hardened-ld.cfg
+	EOF
+
+	# Baseline hardening (bug #851111)
+	newins - gentoo-hardened.cfg <<-EOF
+		# Some of these options are added unconditionally, regardless of
+		# USE=hardened, for parity with sys-devel/gcc.
+		-fstack-clash-protection
+		-fstack-protector-strong
+		-fPIE
+		-include "${EPREFIX}/usr/include/gentoo/fortify.h"
+	EOF
+
+	newins - gentoo-hardened-ld.cfg <<-EOF
+		# Some of these options are added unconditionally, regardless of
+		# USE=hardened, for parity with sys-devel/gcc.
+		-Wl,-z,relro
+	EOF
+
+	dodir /usr/include/gentoo
+
+	cat >> "${ED}/usr/include/gentoo/maybe-stddefs.h" <<-EOF || die
+	/* __has_include is an extension, but it's fine, because this is only
+	for Clang anyway. */
+	#if defined __has_include && __has_include (<stdc-predef.h>) && !defined(__GLIBC__)
+	# include <stdc-predef.h>
+	#endif
+	EOF
+
+	local fortify_level=$(usex hardened 3 2)
+	# We have to do this because glibc's headers warn if F_S is set
+	# without optimization and that would at the very least be very noisy
+	# during builds and at worst trigger many -Werror builds.
+	cat >> "${ED}/usr/include/gentoo/fortify.h" <<- EOF || die
+	#ifdef __clang__
+	# pragma clang system_header
+	#endif
+	#ifndef _FORTIFY_SOURCE
+	# if defined(__has_feature)
+	#  define __GENTOO_HAS_FEATURE(x) __has_feature(x)
+	# else
+	#  define __GENTOO_HAS_FEATURE(x) 0
+	# endif
+	#
+	# if defined(__STDC_HOSTED__) && __STDC_HOSTED__ == 1
+	#  define __GENTOO_NOT_FREESTANDING 1
+	# else
+	#  define __GENTOO_NOT_FREESTANDING 0
+	# endif
+	#
+	# if defined(__OPTIMIZE__) && __OPTIMIZE__ > 0 && __GENTOO_NOT_FREESTANDING > 0
+	#  if !defined(__SANITIZE_ADDRESS__) && !__GENTOO_HAS_FEATURE(address_sanitizer) && !__GENTOO_HAS_FEATURE(memory_sanitizer)
+	#   define _FORTIFY_SOURCE ${fortify_level}
+	#  endif
+	# endif
+	# undef __GENTOO_HAS_FEATURE
+	# undef __GENTOO_NOT_FREESTANDING
+	#endif
+	EOF
+
+	if use hardened ; then
+		cat >> "${ED}/etc/clang/gentoo-hardened.cfg" <<-EOF || die
+			# Options below are conditional on USE=hardened.
+			-D_GLIBCXX_ASSERTIONS
+
+			# Analogue to GLIBCXX_ASSERTIONS
+			# https://libcxx.llvm.org/UsingLibcxx.html#assertions-mode
+			# https://libcxx.llvm.org/Hardening.html#using-hardened-mode
+			-D_LIBCPP_ENABLE_HARDENED_MODE=1
+		EOF
+
+		cat >> "${ED}/etc/clang/gentoo-hardened-ld.cfg" <<-EOF || die
+			# Options below are conditional on USE=hardened.
+			-Wl,-z,now
+		EOF
+	fi
+
+	# We only install config files for supported ABIs because unprefixed tools
+	# might be used for crosscompilation where e.g. PIE may not be supported.
+	# See bug #912237 and bug #901247.
+	doclang_cfg "${CHOST}"
+
+	# Just ${CHOST} won't do due to bug #912685.
+	local abi
+	for abi in $(get_all_abis); do
+		local abi_chost=$(get_abi_CHOST "${abi}")
+		doclang_cfg "${abi_chost}"
+	done
+}
+
+pkg_preinst() {
+	if has_version -b sys-devel/gcc-config && has_version sys-devel/gcc
+	then
+		local gcc_path=$(gcc-config --get-lib-path 2>/dev/null)
+		if [[ -n ${gcc_path} ]]; then
+			cat >> "${ED}/etc/clang/gentoo-gcc-install.cfg" <<-EOF
+				--gcc-install-dir="${gcc_path%%:*}"
+			EOF
+		fi
+	fi
+}