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llvm-utils.eclass: Introduce an eclass for common helpers
Move some reusable functions from llvm.eclass to llvm-utils.eclass. This is with minimal modifications so far (only argument checks were cleaned up). Signed-off-by: Michał Górny <mgorny@gentoo.org>
This commit is contained in:
Michał Górny
115
eclass/llvm-utils.eclass
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115
eclass/llvm-utils.eclass
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@@ -0,0 +1,115 @@
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# Copyright 2024 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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# @ECLASS: llvm-utils.eclass
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# @MAINTAINER:
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# Michał Górny <mgorny@gentoo.org>
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# @AUTHOR:
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# Michał Górny <mgorny@gentoo.org>
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# @SUPPORTED_EAPIS: 7 8
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# @BLURB: Common utility functions for building against installed LLVM
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# @DESCRIPTION:
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# The utility eclass providing shared functions reused between
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# llvm.eclass and llvm-r1.eclass. It may also be used directly
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# in ebuilds.
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case ${EAPI} in
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7|8) ;;
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*) die "${ECLASS}: EAPI ${EAPI:-0} not supported" ;;
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esac
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if [[ ! ${_LLVM_UTILS_ECLASS} ]]; then
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_LLVM_UTILS_ECLASS=1
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# @FUNCTION: llvm_tuple_to_target
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# @USAGE: [<tuple>]
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# @DESCRIPTION:
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# Translate a tuple into a target suitable for LLVM_TARGETS.
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# Defaults to ${CHOST} if not specified.
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llvm_tuple_to_target() {
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debug-print-function ${FUNCNAME} "${@}"
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[[ ${#} -gt 1 ]] && die "Usage: ${FUNCNAME} [<tuple>]"
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case ${1:-${CHOST}} in
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aarch64*) echo "AArch64";;
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amdgcn*) echo "AMDGPU";;
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arc*) echo "ARC";;
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arm*) echo "ARM";;
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avr*) echo "AVR";;
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bpf*) echo "BPF";;
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csky*) echo "CSKY";;
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loong*) echo "LoongArch";;
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m68k*) echo "M68k";;
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mips*) echo "Mips";;
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msp430*) echo "MSP430";;
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nvptx*) echo "NVPTX";;
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powerpc*) echo "PowerPC";;
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riscv*) echo "RISCV";;
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sparc*) echo "Sparc";;
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s390*) echo "SystemZ";;
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x86_64*|i?86*) echo "X86";;
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xtensa*) echo "Xtensa";;
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*) die "Unknown LLVM target for tuple ${1:-${CHOST}}"
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esac
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}
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# @FUNCTION: llvm_fix_clang_version
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# @USAGE: <variable-name>...
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# @DESCRIPTION:
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# Fix the clang compiler name in specified variables to include
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# the major version, to prevent PATH alterations from forcing an older
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# clang version being used.
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llvm_fix_clang_version() {
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debug-print-function ${FUNCNAME} "${@}"
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local shopt_save=$(shopt -p -o noglob)
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set -f
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local var
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for var; do
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local split=( ${!var} )
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case ${split[0]} in
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*clang|*clang++|*clang-cpp)
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local version=()
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read -r -a version < <("${split[0]}" --version)
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local major=${version[-1]%%.*}
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if [[ -n ${major//[0-9]} ]]; then
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die "${var}=${!var} produced invalid --version: ${version[*]}"
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fi
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split[0]+=-${major}
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if ! type -P "${split[0]}" &>/dev/null; then
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die "${split[0]} does not seem to exist"
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fi
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declare -g "${var}=${split[*]}"
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;;
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esac
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done
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${shopt_save}
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}
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# @FUNCTION: llvm_fix_tool_path
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# @USAGE: <variable-name>...
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# @DESCRIPTION:
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# Fix the LLVM tools referenced in the specified variables to their
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# current location, to prevent PATH alterations from forcing older
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# versions being used.
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llvm_fix_tool_path() {
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debug-print-function ${FUNCNAME} "${@}"
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local shopt_save=$(shopt -p -o noglob)
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set -f
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local var
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for var; do
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local split=( ${!var} )
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local path=$(type -P ${split[0]} 2>/dev/null)
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# if it resides in one of the LLVM prefixes, it's an LLVM tool!
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if [[ ${path} == "${BROOT}/usr/lib/llvm"* ]]; then
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split[0]=${path}
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declare -g "${var}=${split[*]}"
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fi
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done
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${shopt_save}
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}
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fi
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@@ -7,6 +7,7 @@
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# @AUTHOR:
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# Michał Górny <mgorny@gentoo.org>
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# @SUPPORTED_EAPIS: 7 8
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# @PROVIDES: llvm-utils
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# @BLURB: Utility functions to build against slotted LLVM
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# @DESCRIPTION:
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# The llvm.eclass provides utility functions that can be used to build
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@@ -64,6 +65,8 @@ esac
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if [[ ! ${_LLVM_ECLASS} ]]; then
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_LLVM_ECLASS=1
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inherit llvm-utils
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# make sure that the versions installing straight into /usr/bin
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# are uninstalled
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DEPEND="!!sys-devel/llvm:0"
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@@ -174,95 +177,6 @@ get_llvm_prefix() {
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echo "${prefix}/usr/lib/llvm/$(get_llvm_slot "${@}")"
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}
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# @FUNCTION: llvm_tuple_to_target
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# @USAGE: [<tuple>]
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# @DESCRIPTION:
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# Translate a tuple into a target suitable for LLVM_TARGETS.
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# Defaults to ${CHOST} if not specified.
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llvm_tuple_to_target() {
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debug-print-function ${FUNCNAME} "${@}"
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case ${1:-${CHOST}} in
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aarch64*) echo "AArch64";;
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amdgcn*) echo "AMDGPU";;
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arc*) echo "ARC";;
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arm*) echo "ARM";;
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avr*) echo "AVR";;
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bpf*) echo "BPF";;
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csky*) echo "CSKY";;
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loong*) echo "LoongArch";;
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m68k*) echo "M68k";;
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mips*) echo "Mips";;
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msp430*) echo "MSP430";;
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nvptx*) echo "NVPTX";;
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powerpc*) echo "PowerPC";;
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riscv*) echo "RISCV";;
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sparc*) echo "Sparc";;
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s390*) echo "SystemZ";;
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x86_64*|i?86*) echo "X86";;
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xtensa*) echo "Xtensa";;
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*) die "Unknown LLVM target for tuple ${1:-${CHOST}}"
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esac
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}
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# @FUNCTION: llvm_fix_clang_version
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# @USAGE: <variable-name>...
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# @DESCRIPTION:
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# Fix the clang compiler name in specified variables to include
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# the major version, to prevent PATH alterations from forcing an older
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# clang version being used.
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llvm_fix_clang_version() {
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debug-print-function ${FUNCNAME} "${@}"
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local shopt_save=$(shopt -p -o noglob)
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set -f
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local var
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for var; do
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local split=( ${!var} )
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case ${split[0]} in
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*clang|*clang++|*clang-cpp)
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local version=()
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read -r -a version < <("${split[0]}" --version)
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local major=${version[-1]%%.*}
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if [[ -n ${major//[0-9]} ]]; then
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die "${var}=${!var} produced invalid --version: ${version[*]}"
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fi
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split[0]+=-${major}
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if ! type -P "${split[0]}" &>/dev/null; then
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die "${split[0]} does not seem to exist"
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fi
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declare -g "${var}=${split[*]}"
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;;
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esac
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done
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${shopt_save}
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}
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# @FUNCTION: llvm_fix_tool_path
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# @USAGE: <variable-name>...
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# @DESCRIPTION:
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# Fix the LLVM tools referenced in the specified variables to their
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# current location, to prevent PATH alterations from forcing older
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# versions being used.
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llvm_fix_tool_path() {
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debug-print-function ${FUNCNAME} "${@}"
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local shopt_save=$(shopt -p -o noglob)
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set -f
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local var
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for var; do
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local split=( ${!var} )
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local path=$(type -P ${split[0]} 2>/dev/null)
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# if it resides in one of the LLVM prefixes, it's an LLVM tool!
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if [[ ${path} == "${BROOT}/usr/lib/llvm"* ]]; then
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split[0]=${path}
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declare -g "${var}=${split[*]}"
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fi
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done
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${shopt_save}
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}
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# @FUNCTION: llvm_pkg_setup
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# @DESCRIPTION:
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# Prepend the appropriate executable directory for the newest
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82
eclass/tests/llvm-utils.sh
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82
eclass/tests/llvm-utils.sh
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@@ -0,0 +1,82 @@
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#!/bin/bash
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# Copyright 2024 Gentoo Authors
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# Distributed under the terms of the GNU General Public License v2
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source tests-common.sh || exit
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EAPI=8
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inherit llvm-utils
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test_fix_clang_version() {
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local var=${1}
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local tool=${2}
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local version=${3}
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local expected=${4}
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eval "${tool}() {
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cat <<-EOF
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clang version ${version}
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Target: x86_64-pc-linux-gnu
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Thread model: posix
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InstalledDir: /usr/lib/llvm/17/bin
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Configuration file: /etc/clang/x86_64-pc-linux-gnu-clang.cfg
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EOF
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}"
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declare -g ${var}=${tool}
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tbegin "llvm_fix_clang_version ${var}=${tool} for ${version}"
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llvm_fix_clang_version "${var}"
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if [[ ${!var} != ${expected} ]]; then
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eerror "llvm_fix_clang_version ${var}"
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eerror " gave: ${!var}"
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eerror "expected: ${expected}"
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fi
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tend ${?}
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}
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test_fix_tool_path() {
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local var=${1}
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local tool=${2}
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local expected_subst=${3}
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local expected=${tool}
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tbegin "llvm_fix_tool_path ${1}=${2} (from llvm? ${expected_subst})"
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local matches=( "${BROOT}"/usr/lib/llvm/*/bin/"${tool}" )
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if [[ ${expected_subst} == 1 ]]; then
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if [[ ! -x ${matches[0]} ]]; then
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ewarn "- skipping, test requires ${tool}"
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return
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fi
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expected=${matches[0]}
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local -x PATH=${matches[0]%/*}
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else
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local -x PATH=
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fi
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declare -g ${var}=${tool}
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llvm_fix_tool_path "${var}"
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if [[ ${!var} != ${expected} ]]; then
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eerror "llvm_fix_tool_path ${var}"
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eerror " gave: ${!var}"
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eerror "expected: ${expected}"
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fi
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tend ${?}
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}
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test_fix_clang_version CC clang 19.0.0git78b4e7c5 clang-19
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test_fix_clang_version CC clang 17.0.6 clang-17
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test_fix_clang_version CXX clang++ 17.0.6 clang++-17
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test_fix_clang_version CC x86_64-pc-linux-gnu-clang 17.0.6 \
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x86_64-pc-linux-gnu-clang-17
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test_fix_clang_version CC clang-17 n/a clang-17
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test_fix_clang_version CC gcc n/a gcc
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test_fix_tool_path AR llvm-ar 1
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test_fix_tool_path RANLIB llvm-ranlib 1
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test_fix_tool_path AR ar 1
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test_fix_tool_path AR ar 0
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texit
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