Experimental new redoconf C/C++ build/autoconfiguration system.
To test it out, try this: ./do -j10 build cd docs/cookbook/c redo -j10 test It should detect all the compilers on your system and make three separate builds for each one: normal, debug, and optimized. Then it tries to run a test program under each one. If there are windows cross compilers and you also have 'wine' installed, it'll try running the test program under wine as well. redoconf currently has no documentation other than the example program. We'll fix that later.
This commit is contained in:
Avery Pennarun
parent
5db883ac58
commit
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67 changed files with 1777 additions and 1 deletions
200
redoconf/configure.sh
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redoconf/configure.sh
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@ -0,0 +1,200 @@
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#!/bin/sh -e
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if [ -z "$S" ]; then
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exec >&2
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echo "configure.sh: must include this from a 'configure' script"
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exit 99
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fi
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if [ -e "configure" ] || [ -e "rc.sh" ]; then
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exec >&2
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echo "$0: run this script from an empty output directory."
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echo " For example:"
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echo " (mkdir out && cd out && ../configure && redo -j10)"
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exit 99
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fi
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S="$(dirname "$0")"
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rm -f src Makefile
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echo "$S" >src
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# Don't regenerate these files unless they're missing. Otherwise redo
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# will treat it as a changed dependency and rebuild a bunch of files
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# unnecessarily.
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[ -e redoconf.rc ] || cat >redoconf.rc <<-EOF
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# Automatically generated by $0
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read -r S <src
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. "\$S/redoconf/rc.sh"
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EOF
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# Instead of a symlink, we could make this a script like redoconf.rc,
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# except then we would have to redi-ifchange default.do.sh, which would
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# greatly increase the number of calls to redo-ifchange in the fast path.
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# That turns out to slow things down quite a bit. So let redo follow
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# the symlink and note the dependency internally, which is faster.
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[ -e default.do ] || ln -sf "$S/redoconf/default.do.sh" default.do
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cat >Makefile <<'EOF'
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# A wrapper for people who like to type 'make' instead of 'redo'
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all $(filter-out all,$(MAKECMDGOALS)):
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+redo "$@"
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.PHONY: $(MAKECMDGOALS) all
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EOF
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# Don't include rc.sh here, because that might call redo-ifchange,
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# and we're not ready for that yet.
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. "$S/redoconf/utils.sh"
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usage() {
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exec >&2
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printf 'Usage: %s %s' "$0" \
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'[options...] [KEY=value] [--with-key=value]
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--prefix= Change installation prefix (usually /usr/local)
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--host= Architecture prefix for output (eg. i686-w64-mingw32-)
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--enable-static Link libraries and binaries statically
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--{dis,en}able-optimization Disable/enable optimization for C/C++
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--{dis,en}able-debug Disable/enable debugging flags for C/C++
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-h, --help This help message
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'
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if [ -e "$S/configure.help" ]; then
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printf '\nProject-specific flags:\n'
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sort "$S/configure.help" |
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while read k msg; do
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# skip blanks and comments
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[ -n "${k%%\#*}" ] || continue
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# skip options with syntax already explained above
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[ "$k" != "ARCH" ] || continue
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[ "$k" != "PREFIX" ] || continue
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[ "$k" != "STATIC" ] || continue
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printf ' %-15s %s\n' "$k=..." "$msg"
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done
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else
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printf '\nNo extra help yet: configure.help is missing.\n'
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fi
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exit 1
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}
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upper() {
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xecho "$1" | tr 'a-z' 'A-Z' | sed 's/[^A-Z0-9]/_/g'
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}
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lower() {
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xecho "$1" | tr 'A-Z' 'a-z' | sed 's/[^a-z0-9]/-/g'
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}
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emit() {
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xecho "replaceln" "$1" "$(shquote "$(rc_splitwords "$2")")"
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}
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emit_append() {
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xecho "appendln" "$1" "$(shquote "$(rc_splitwords "$2")")"
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}
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for k in ARCH CC CXX CPPFLAGS CFLAGS CXXFLAGS \
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OPTFLAGS LINK LDFLAGS LIBS xCFLAGS; do
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eval v=\$$k
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if [ -n "$v" ]; then
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echo "$0: Fatal: '$k' environment variable is set." >&2
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echo " This can cause inconsistent builds." >&2
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echo " Pass variables as arguments to $0 instead." >&2
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echo " Example: $0 $k=$(shquote "$v")" >&2
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exit 4
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fi
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done
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rm -f _flags.tmp
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echo "# Auto-generated by $0" >_flags.tmp
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for d in "$@"; do
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case $d in
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--help|-h|-\?)
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usage
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;;
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--host=*)
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v="${d#*=}"
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emit "ARCH" "$v"
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;;
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--enable-static)
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emit "STATIC" "1"
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;;
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--enable-optimization)
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emit_append OPTFLAGS "-O2"
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;;
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--disable-optimization)
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emit_append OPTFLAGS "-O0"
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;;
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--enable-debug)
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emit_append OPTFLAGS "-g"
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;;
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--disable-debug)
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emit_append OPTFLAGS "-g0"
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;;
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--prefix=*)
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v="${d#*=}"
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emit "PREFIX" "$v"
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;;
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--with-[A-Za-z]*)
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if [ "$d" = "${d%%=*}" ]; then
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xecho "$0: in $(shquote "$d"):" \
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"must supply '--with-<key>=<value>'" >&2
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exit 3
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fi
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k="${d%%=*}"
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k="${k#--with-}"
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v="${d#*=}"
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kl=$(lower "$k")
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if [ "$k" != "$kl" ]; then
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xecho "$0: in $(shquote "--with-$k=..."):" \
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"must be all lowercase and dashes" >&2
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exit 3
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fi
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ku=$(upper "$k")
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emit "$ku" "$v"
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;;
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--without-[A-Za-z]*)
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if [ "$d" != "${d%%=*}" ]; then
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xecho "$0: in $(shquote "$d"):" \
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"do not supply '=...' with --without" >&2
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exit 3
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fi
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k="${d#--without-}"
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kl=$(lower "$k")
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if [ "$k" != "$kl" ]; then
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xecho "$0: in $(shquote "$d"):" \
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"must be all lowercase and dashes" >&2
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exit 3
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fi
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ku=$(upper "$k")
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# This causes tests to try to link using an extra
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# option "NONE", which will fail, thus making the
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# package appear missing.
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emit "$ku" "NONE"
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;;
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[A-Za-z_]*=*)
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k="${d%%=*}"
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v="${d#*=}"
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ku=$(upper "$k")
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if [ "$k" != "$ku" ]; then
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xecho "$0: in $(shquote "$d"):" \
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"invalid KEY=value;" \
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"must be all caps and underscores" >&2
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exit 3
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fi
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emit "$ku" "$v"
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;;
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*)
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xecho "$0: in $(shquote "$d"):" \
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"invalid option; use --help for help." >&2
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exit 2
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;;
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esac
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done >>_flags.tmp
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# Avoid replacing the file if it's identical, so we don't trigger
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# unnecessary rebuilds. redo-stamp can do this for a redo target,
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# but _flags is being generated by this configure script, which is
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# not a redo target.
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if [ -e _flags ] && cmp _flags.tmp _flags >/dev/null; then
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rm -f _flags.tmp
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else
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rm -f _flags
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mv _flags.tmp _flags
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fi
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