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configure: new script.

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You can use environment variables or the commandline to set defaults.

It looks very autoconf, but you don't need to learn m4.

Doesn't cover all the obscure flags, but it's easy to extend.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2018-06-06 13:05:27 +09:30
committed by Christian Decker
parent d395b58ffa
commit f6d22ed0cf
2 changed files with 101 additions and 0 deletions
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2
.gitignore vendored
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@@ -18,6 +18,7 @@ tools/check-bolt
coverage
ccan/config.h
__pycache__
config.vars
# Ignore some generated binaries
lightningd/test/run-channel
@@ -46,4 +47,5 @@ test/test_protocol
test/test_sphinx
tests/.pytest.restart
gossip_store
.pytest_cache

99
configure vendored Executable file
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@@ -0,0 +1,99 @@
#! /bin/sh
# Simple configure script for c-lightning.
set -e
# Default values, loaded from environment or canned.
PREFIX=${PREFIX:-/usr/local}
CC=${CC:-cc}
CWARNFLAGS=${CWARNFLAGS:--Werror -Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition}
CDEBUGFLAGS=${CDEBUGFLAGS:--std=gnu11 -g -fstack-protector}
DEVELOPER=${DEVELOPER:-0}
COMPAT=${COMPAT:-1}
CONFIGURATOR_CC=${CONFIGURATOR_CC:-$CC}
CONFIGURATOR=ccan/tools/configurator/configurator
CONFIG_VAR_FILE=config.vars
CONFIG_HEADER=ccan/config.h
usage_with_default()
{
if [ $# = 4 ]; then
if [ $2 ]; then
DEF=$4
else
DEF=$3
fi
else
DEF=$2
fi
echo " $1 (default $DEF)"
}
usage()
{
echo "Usage: ./configure [--reconfigure] [setting=value] [options]"
echo "If --reconfigure is specified, $CONFIG_VAR_FILE will set defaults if it exists."
echo "Default settings:"
usage_with_default "CC" "$CC"
usage_with_default "CWARNFLAGS" "$CWARNFLAGS"
usage_with_default "CDEBUGFLAGS" "$CDEBUGFLAGS"
usage_with_default "CONFIGURATOR_CC" "$CONFIGURATOR_CC"
echo " To override compile line for configurator itself"
echo "Options include:"
usage_with_default "--prefix=" "$PREFIX"
echo " Prefix for make install"
usage_with_default "--enable/disable-developer" "$DEVELOPER" "enable" "disable"
echo " Developer mode, good for testing"
usage_with_default "--enable/disable-compat" "$COMPAT" "enable" "disable"
echo " Compatibility mode, good to disable to see if your software breaks"
exit 1
}
add_var()
{
echo "Setting $1... $2"
echo "$1=$2" >> $CONFIG_VAR_FILE
[ -z "$3" ] || echo "#define $1 $2" >> "$3"
}
for opt in "$@"; do
case "$opt" in
--reconfigure)
# Escape spaces for things like CWARNFLAGS.
sed 's/=\(.*\)$/="\1"/' $CONFIG_VAR_FILE > $CONFIG_VAR_FILE.$$
. ./$CONFIG_VAR_FILE.$$
;;
CC=*) CC="${opt#CC=}";;
CONFIGURATOR_CC=*) CONFIGURATOR_CC="${opt#CONFIGURATOR_CC=}";;
CWARNFLAGS=*) CWARNFLAGS="${opt#CWARNFLAGS=}";;
CDEBUGFLAGS=*) CDEBUGFLAGS="${opt#CDEBUGFLAGS=}";;
--prefix=*) PREFIX="${opt#--prefix=}";;
--enable-developer) DEVELOPER=1;;
--disable-developer) DEVELOPER=0;;
--enable-compat) COMPAT=1;;
--disable-compat) COMPAT=0;;
--help|-h) usage;;
*)
echo "Unknown option '$opt'" >&2
usage
;;
esac
done
echo -n "Compiling $CONFIGURATOR..."
$CC $CWARNFLAGS $CDEBUGFLAGS -o $CONFIGURATOR $CONFIGURATOR.c
echo "done"
rm -f $CONFIG_VAR_FILE.$$
$CONFIGURATOR --autotools-style --var-file=$CONFIG_VAR_FILE.$$ --header-file=$CONFIG_HEADER --configurator-cc="$CONFIGURATOR_CC" "$CC" $CWARNFLAGS $CDEBUGFLAGS
mv $CONFIG_VAR_FILE.$$ $CONFIG_VAR_FILE
add_var PREFIX "$PREFIX"
add_var CC "$CC"
add_var CONFIGURATOR_CC "$CONFIGURATOR_CC"
add_var CWARNFLAGS "$CWARNFLAGS"
add_var CDEBUGFLAGS "$CDEBUGFLAGS"
add_var DEVELOPER "$DEVELOPER" $CONFIG_HEADER
add_var COMPAT "$COMPAT" $CONFIG_HEADER