diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 239 |
1 files changed, 239 insertions, 0 deletions
diff --git a/configure b/configure new file mode 100755 index 0000000..ab62aa6 --- /dev/null +++ b/configure @@ -0,0 +1,239 @@ +#!/bin/sh + +# Copyright © Tavian Barnes <tavianator@tavianator.com> +# SPDX-License-Identifier: 0BSD + +# bfs build configuration script + +set -eu + +# Get the relative path to the source tree based on how the script was run +DIR=$(dirname -- "$0") + +# Print the help message +help() { + cat <<EOF +Usage: + + \$ $0 [--enable-*|--disable-*] [--with-*|--without-*] [CC=...] [...] + \$ $MAKE -j$(nproc) + +Variables set in the environment or on the command line will be picked up: + + MAKE + The make implementation to use + CC + The C compiler to use + + CPPFLAGS="-I... -D..." + CFLAGS="-W... -f..." + LDFLAGS="-L... -Wl,..." + Preprocessor/compiler/linker flags + + LDLIBS="-l... -l..." + Dynamic libraries to link + + EXTRA_{CPPFLAGS,CFLAGS,LDFLAGS,LDLIBS} + Adds to the default flags, instead of replacing them + +The default flags result in a plain debug build. Other build profiles include: + + --enable-release + Enable optimizations, disable assertions + --enable-{asan,lsan,msan,tsan,ubsan} + Enable sanitizers + --enable-gcov + Enable code coverage instrumentation + +External dependencies are auto-detected by default, but you can build --with or +--without them explicitly: + + --with-libacl --without-libacl + --with-libcap --without-libcap + --with-libselinux --without-libselinux + --with-liburing --without-liburing + --with-oniguruma --without-oniguruma + +Packaging: + + --prefix=/path + Set the installation prefix (default: /usr) + --mandir=/path + Set the man page directory (default: \$PREFIX/share/man) + --version=X.Y.Z + Set the version string (default: $("$DIR/build/version.sh")) + +This script is a thin wrapper around a makefile-based configuration system. +Any other arguments will be passed directly to the $MAKE invocation, e.g. + + \$ $0 -j$(nproc) V=1 +EOF +} + +# Report a warning +warn() { + fmt="$1" + shift + printf "%s: warning: $fmt\\n" "$0" "$@" >&2 +} + +# Report an argument parsing error +invalid() { + printf '%s: error: Unrecognized option "%s"\n\n' "$0" "$1" >&2 + printf 'Run %s --help for more information.\n' "$0" >&2 + exit 1 +} + +# Get the number of cores to use +nproc() { + { + # Run command nproc in a subshell to work around a bash 3 bug + # https://stackoverflow.com/q/68143965 + (command nproc) \ + || sysctl -n hw.ncpu \ + || getconf _NPROCESSORS_ONLN \ + || echo 1 + } 2>/dev/null +} + +# Save the ./configure command line for bfs --version +export CONFFLAGS="" + +# Default to `make` +MAKE="${MAKE-make}" + +# Parse the command-line arguments +for arg; do + shift + + # Only add --options to CONFFLAGS, so we don't print FLAG=values twice in bfs --version + case "$arg" in + -*) + CONFFLAGS="${CONFFLAGS}${CONFFLAGS:+ }${arg}" + ;; + esac + + # --[(enable|disable|with|without)-]$name[=$value] + value="${arg#*=}" + name="${arg%%=*}" + name="${name#--}" + case "$arg" in + --enable-*|--disable-*|--with-*|--without-*) + name="${name#*-}" + ;; + esac + NAME=$(printf '%s' "$name" | tr 'a-z-' 'A-Z_') + + # y/n modality + case "$arg" in + --enable-*|--with-*) + case "$arg" in + *=y|*=yes) yn=y ;; + *=n|*=no) yn=n ;; + *=*) invalid "$arg" ;; + *) yn=y ;; + esac + ;; + --disable-*|--without-*) + case "$arg" in + *=*) invalid "arg" ;; + *) yn=n ;; + esac + ;; + esac + + # Fix up --enable-lib* to --with-lib* + case "$arg" in + --enable-*|--disable-*) + case "$name" in + libacl|libcap|libselinux|liburing|oniguruma) + old="$arg" + case "$arg" in + --enable-*) arg="--with-${arg#--*-}" ;; + --disable-*) arg="--without-${arg#--*-}" ;; + esac + warn 'Treating "%s" like "%s"' "$old" "$arg" + ;; + esac + ;; + esac + + case "$arg" in + -h|--help) + help + exit 0 + ;; + + --enable-*|--disable-*) + case "$name" in + release|lto|asan|lsan|msan|tsan|ubsan|lint|gcov) + set -- "$@" "$NAME=$yn" + ;; + *) + invalid "$arg" + ;; + esac + ;; + + --with-*|--without-*) + case "$name" in + libacl|libcap|libselinux|liburing|oniguruma) + set -- "$@" "WITH_$NAME=$yn" + ;; + *) + invalid "$arg" + ;; + esac + ;; + + --prefix=*|--mandir=*|--version=*) + set -- "$@" "$NAME=$value" + ;; + + --infodir=*|--build=*|--host=*|--target=*) + warn 'Ignoring option "%s"' "$arg" + ;; + + MAKE=*) + MAKE="$value" + ;; + + # Warn about MAKE variables that have documented configure flags + RELEASE=*|LTO=*|ASAN=*|LSAN=*|MSAN=*|TSAN=*|UBSAN=*|LINT=*|GCOV=*) + name=$(printf '%s' "$NAME" | tr 'A-Z_' 'a-z-') + warn '"%s" is deprecated; use --enable-%s' "$arg" "$name" + set -- "$@" "$arg" + ;; + + PREFIX=*|MANDIR=*|VERSION=*) + name=$(printf '%s' "$NAME" | tr 'A-Z_' 'a-z-') + warn '"%s" is deprecated; use --%s=%s' "$arg" "$name" "$value" + set -- "$@" "$arg" + ;; + + WITH_*=*) + name=$(printf '%s' "$NAME" | tr 'A-Z_' 'a-z-') + warn '"%s" is deprecated; use --%s' "$arg" "$name" + set -- "$@" "$arg" + ;; + + # make flag (-j2) or variable (CC=clang) + -*|*=*) + set -- "$@" "$arg" + ;; + + *) + invalid "$arg" + ;; + esac +done + +# Set up symbolic links for out-of-tree builds +for f in Makefile bench build completions docs src tests; do + test -e "$f" || ln -s "$DIR/$f" "$f" +done + +# Set MAKEFLAGS to -j$(nproc) if it's unset +export MAKEFLAGS="${MAKEFLAGS--j$(nproc)}" + +$MAKE -rf build/config.mk "$@" |