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|
#!/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 an argument parsing error
invalid() {
printf 'error: Unrecognized option "%s"\n\n' "$1" >&2
printf 'Run %s --help for more information.\n' "$0" >&2
exit 1
}
# Get the number of cores to use
nproc() {
{
command nproc \
|| sysctl -n hw.ncpu \
|| getconf _NPROCESSORS_ONLN \
|| echo 1
} 2>/dev/null
}
# Save the ./configure command line for bfs --version
export CONFFLAGS="$*"
# Default to `make`
MAKE="${MAKE-make}"
# Parse the command-line arguments
for arg; do
shift
# --[(enable|disable|with|without)-]$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
printf 'warning: Treating "%s" like "%s"\n' "$old" "$arg" >&2
;;
esac
;;
esac
case "$arg" in
-h|--help)
help
exit 0
;;
--enable-*|--disable-*)
case "$name" in
release|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=*)
printf 'warning: Ignoring option "%s"\n' "$arg" >&2
;;
MAKE=*)
MAKE="$value"
;;
# make flag (-j2) or variable (CC=clang)
-*|*=*)
set -- "$@" "$arg"
;;
*)
invalid "$arg"
;;
esac
done
# Set up symbolic links for out-of-tree builds
for f in Makefile build completions docs src tests; do
test -e "$f" || ln -s "$DIR/$f" "$f"
done
# Set MAKEFLAGS to -j$(nproc) if it's unset
export MAKEFLAGS="${MAKEFLAGS--j$(nproc)}"
$MAKE -rf build/config.mk "$@"
|
