sys-devel/clang-common: Add 17.0.0_pre20230526 snapshot

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

2 files changed, 191 insertions, 0 deletions

diff --git a/sys-devel/clang-common/Manifest b/sys-devel/clang-common/Manifest
index 03db32342aab..d616caaf795e 100644
--- a/sys-devel/clang-common/Manifest
+++ b/sys-devel/clang-common/Manifest
@@ -6,4 +6,5 @@ DIST llvm-project-16.0.3.src.tar.xz 117998136 BLAKE2B 6117586a117c30515e9a5623ab
 DIST llvm-project-16.0.3.src.tar.xz.sig 566 BLAKE2B bbd96268b006fecffd7402452ae7559bd2ea42c7b771999f58893a48d66b1b056b476a7022c70e2ab8f11dba8318ccc141f97a05ece3b9ed3b4405a6890b0c3a SHA512 cdd5e1c2a252ba58f9b7f8687d6cf9a330c188988707bd72f4632a8158a2db9ac180b3936da99b87e7e99886c39cb8517ebbb04b7d1be198e76964e31ec8dc58
 DIST llvm-project-16.0.4.src.tar.xz 117996332 BLAKE2B 2ea3ef25290ce6180d271e42fbf5e02da973a21e3929c1ac8d1e3e7b268d39db97611e15654ca7e6527add24542d0eed0ee2b1b9d85dfd0ba661e55356bac5d3 SHA512 860bcb999005f55bed25691304983d7bf707f8e3246000595b412b9e88f4a1614be0adb43bbff9c30f49b969373fa0becab02a56ac37915a5f83c52ca8ea3f95
 DIST llvm-project-16.0.4.src.tar.xz.sig 566 BLAKE2B 43cb2147f12f98f864797158e8efcfed9c6780fae3b5c71c0f1aea19a4131ee91c36bdf5b10e44f478f2370c8d22a9038038ecd607f25a95f2d3e33628eb9ac0 SHA512 c902d1b652e6e144fcf74f550539f56665475b6bdf673ba5bf2f1731c3bb8f5717ed56433d488c54bbf2f429b432da84e0bfb4b5fb5f2b7fa208b4f24f682be7
+DIST llvm-project-a2684acfb61d40f441e240035d7f1ba50da637c8.tar.gz 184900914 BLAKE2B fb1f836738415a640bc84283722f6a7355a06bc8ac05b544dd4ad4ac9552dcf70040b82b0493c5b4485b28610412279ec0adcf467e71915167aa7d010c08216e SHA512 c08ff8abc166399e692d3166ccf65eb4b647893cba8ffc10bcda815bc914a944855bac036d6349f6d820a6ff43d5417170e6ff8620d97a2a144a0898e95d09e3
 DIST llvm-project-abbb22cc0c9c33dedb8d53c2bd3e703f92baace7.tar.gz 183193919 BLAKE2B 75c63d39918f7ec0faca0b1d03ba17dbd7d39a6f1d3a031dcb005ae1729933d8481f0bd745ec029ab21779525b2ddaf2989eaca2aed2b0e9b60c50ef71c7fc11 SHA512 f0c1b6fe2e087db202d32de05613b7570bd9a82dfef2e464014c9d4c9ba02c20d423cb783aa40ce5e9c9e074288efb2e5b6d70d55913bd285108e747400f55e7
diff --git a/sys-devel/clang-common/clang-common-17.0.0_pre20230526.ebuild b/sys-devel/clang-common/clang-common-17.0.0_pre20230526.ebuild
new file mode 100644
index 000000000000..51e0f70c6470
--- /dev/null
+++ b/sys-devel/clang-common/clang-common-17.0.0_pre20230526.ebuild
@@ -0,0 +1,190 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit bash-completion-r1 llvm.org
+
+DESCRIPTION="Common files shared between multiple slots of clang"
+HOMEPAGE="https://llvm.org/"
+
+LICENSE="Apache-2.0-with-LLVM-exceptions UoI-NCSA"
+SLOT="0"
+KEYWORDS=""
+IUSE="
+	default-compiler-rt default-libcxx default-lld llvm-libunwind
+	hardened stricter
+"
+
+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} )
+	!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 ${missing_flags[*]}"
+		eerror
+		eerror "or build with CLANG_IGNORE_DEFAULT_RUNTIMES=1."
+		die "Mismatched defaults detected between sys-devel/clang and sys-devel/clang-common"
+	fi
+}
+
+src_install() {
+	newbashcomp bash-autocomplete.sh clang
+
+	insinto /etc/clang
+	newins - gentoo-runtimes.cfg <<-EOF
+		# This file is initially generated by sys-devel/clang-runtime.
+		# It is used to control the default runtimes using by clang.
+
+		--rtlib=$(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
+
+	# 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 "${EPREFIX}/usr/include/gentoo/fortify.h"
+	EOF
+
+	dodir /usr/include/gentoo
+
+	cat >> "${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(__OPTIMIZE__) && __OPTIMIZE__ > 0
+	#  if !defined(__SANITIZE_ADDRESS__) && !__GENTOO_HAS_FEATURE(address_sanitizer) && !__GENTOO_HAS_FEATURE(memory_sanitizer)
+	#   define _FORTIFY_SOURCE ${fortify_level}
+	#  endif
+	# endif
+	# undef __GENTOO_HAS_FEATURE
+	#endif
+	EOF
+
+	if use hardened ; then
+		cat >> "${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
+			-D_LIBCPP_ENABLE_ASSERTIONS=1
+		EOF
+	fi
+
+	if use stricter; then
+		newins - gentoo-stricter.cfg <<-EOF
+			# This file increases the strictness of older clang versions
+			# to match the newest upstream version.
+
+			# clang-16 defaults
+			-Werror=implicit-function-declaration
+			-Werror=implicit-int
+			-Werror=incompatible-function-pointer-types
+
+			# constructs banned by C2x
+			-Werror=deprecated-non-prototype
+
+			# deprecated but large blast radius
+			#-Werror=strict-prototypes
+		EOF
+
+		cat >> "${ED}/etc/clang/gentoo-common.cfg" <<-EOF || die
+			@gentoo-stricter.cfg
+		EOF
+	fi
+
+	local tool
+	for tool in clang{,++,-cpp}; do
+		newins - "${tool}.cfg" <<-EOF
+			# This configuration file is used by ${tool} driver.
+			@gentoo-common.cfg
+		EOF
+	done
+}
+
+pkg_preinst() {
+	if has_version -b sys-devel/gcc-config && has_version sys-devel/gcc
+	then
+		local gcc_path=$(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
+}