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#! /bin/sh
# Simple configure script for c-lightning.
set -e
CONFIGURATOR=ccan/tools/configurator/configurator
CONFIG_VAR_FILE=config.vars
CONFIG_HEADER=ccan/config.h
BASE_WARNFLAGS="-Wall -Wundef -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes -Wold-style-definition -Werror"
usage_with_default()
{
if [ $# = 4 ]; then
if [ "$2" = 1 ]; then
DEF=$3
else
DEF=$4
fi
else
DEF=$2
fi
echo " $1 (default $DEF)"
}
# Given DEVELOPER, what COPTFLAGS do we default to.
default_coptflags()
{
if [ "$1" = 0 ]; then
echo "-Og"
fi
}
# Given COPTFLAGS, HAVE_GCC and HAVE_MODERN_GCC, what CWARNFLAGS to default to?
default_cwarnflags()
{
F=$BASE_WARNFLAGS
# Clang doesn't like -Wno-maybe-uninitialized, but doesn't seem
# to give spurious warnings, either.
if [ "$2" = 1 ]; then
# With old gccs, or optimization != -O3, we need to suppress some warnings.
if [ -n "${1##*-O3*}" ] || [ "$3" != "1" ]; then
F="$F -Wno-maybe-uninitialized"
fi
fi
echo "$F"
}
default_pytest()
{
PYTEST_BINS="pytest-3 pytest3 pytest py.test"
for p in $PYTEST_BINS; do
if [ "$(which $p)" != "" ] ; then
"$p" --version 2>&1 | grep -q "python3" || continue
echo "$p"
return
fi
done
PYTHON_BINS="python python3"
for p in $PYTHON_BINS; do
if [ "$(which $p)" != "" ] ; then
$p --version 2>&1 | grep -q "Python 3." || continue
if $p -c "import pytest" 2>/dev/null ; then
echo "$p -m pytest"
return
fi
fi
done
}
require()
{
name="$1"
resolution="$2"
shift 2
echo -n "checking for $name... "
if "$@" 2>/dev/null; then
echo 'found'
return
fi
echo 'not found'
echo "$resolution" >&2
exit 1
}
default_valgrind_setting()
{
# Valgrind must accept all these options (might exit with error 7 though
# if /bin/true leaks mem on your system!)
if valgrind -q --error-exitcode=7 --track-origins=yes --leak-check=full --show-reachable=yes --errors-for-leak-kinds=all /bin/true >/dev/null 2>&1 || [ $? = 7 ]; then
echo 1
else
echo 0
fi
}
set_defaults()
{
# Default values, loaded from environment or canned.
# Note that ":-" means substitute if empty or unset, "-" means only if unset
# which matters since you might explicitly set of these blank.
PREFIX=${PREFIX:-/usr/local}
CC=${CC:-cc}
CDEBUGFLAGS=${CDEBUGFLAGS--std=gnu11 -g -fstack-protector}
DEVELOPER=${DEVELOPER:-0}
EXPERIMENTAL_FEATURES=${EXPERIMENTAL_FEATURES:-0}
COMPAT=${COMPAT:-1}
STATIC=${STATIC:-0}
ASAN=${ASAN:-0}
PYTEST=${PYTEST-$(default_pytest)}
COPTFLAGS=${COPTFLAGS-$(default_coptflags "$DEVELOPER")}
CONFIGURATOR_CC=${CONFIGURATOR_CC-$CC}
VALGRIND=${VALGRIND:-$(default_valgrind_setting)}
TEST_NETWORK=${TEST_NETWORK:-regtest}
}
usage()
{
echo "Usage: ./configure [--reconfigure] [setting=value] [options]"
echo "If --reconfigure is specified, $CONFIG_VAR_FILE will set defaults."
echo "Default settings:"
set_defaults
DEFAULT_COPTFLAGS="$(default_coptflags $DEVELOPER)"
# We assume we have a modern gcc.
DEFAULT_CWARNFLAGS="$(default_cwarnflags ""$DEFAULT_COPTFLAGS"" 1 1)"
usage_with_default "CC" "$CC"
usage_with_default "CWARNFLAGS" "$DEFAULT_CWARNFLAGS"
usage_with_default "COPTFLAGS" "$DEFAULT_COPTFLAGS"
usage_with_default "CDEBUGFLAGS" "$CDEBUGFLAGS"
usage_with_default "CONFIGURATOR_CC" "${CONFIGURATOR_CC:-$CC}"
echo " To override compile line for configurator itself"
usage_with_default "PYTEST" "$PYTEST"
usage_with_default "VALGRIND" "$VALGRIND"
echo "Options include:"
usage_with_default "--prefix=" "$PREFIX"
echo " Prefix for make install"
usage_with_default "--enable/disable-developer" "$DEVELOPER" "enable" "disable"
echo " Developer mode, good for testing"
usage_with_default "--enable/disable-experimental-features" "$EXPERIMENTAL_FEATURES" "enable" "disable"
echo " Developer mode, good for testing"
usage_with_default "--enable/disable-compat" "$COMPAT" "enable" "disable"
echo " Compatibility mode, good to disable to see if your software breaks"
usage_with_default "--enable/disable-valgrind" "(autodetect)"
echo " Valgrind binary to use for tests"
usage_with_default "--enable/disable-static" "$STATIC" "enable" "disable"
echo " Static link sqlite3, gmp and zlib libraries"
usage_with_default "--enable/disable-address-sanitizer" "$ASAN" "enable" "disable"
echo " Compile with address-sanitizer"
exit 1
}
add_var()
{
if [ -n "$2" ]; then
echo "Setting $1... $2"
else
echo "$1 not found"
fi
echo "$1=$2" >> $CONFIG_VAR_FILE
[ -z "$3" ] || echo "#define $1 $2" >> "$3"
}
for opt in "$@"; do
case "$opt" in
--reconfigure)
# Figure out what defaulT COPTFLAGS was for this config.vars
DEFAULT_COPTFLAGS=
# Set from values if not already set.
while IFS='=' read VAR VAL; do
if eval [ -z \${$VAR+x} ]; then eval $VAR=\"$VAL\"; fi
if [ "$VAR" = DEVELOPER ]; then
DEFAULT_COPTFLAGS=$(default_coptflags "$VAL")
fi
done < $CONFIG_VAR_FILE
# If we were those defaults, unset so we get new defaults in
# case DEVELOPER has changed.
if [ x"$COPTFLAGS" = x"$DEFAULT_COPTFLAGS" ]; then
unset COPTFLAGS
fi
;;
CC=*) CC="${opt#CC=}";;
CONFIGURATOR_CC=*) CONFIGURATOR_CC="${opt#CONFIGURATOR_CC=}";;
CWARNFLAGS=*) CWARNFLAGS="${opt#CWARNFLAGS=}";;
CDEBUGFLAGS=*) CDEBUGFLAGS="${opt#CDEBUGFLAGS=}";;
COPTFLAGS=*) COPTFLAGS="${opt#COPTFLAGS=}";;
PYTEST=*) PYTEST="${opt#PYTEST=}";;
--prefix=*) PREFIX="${opt#--prefix=}";;
--enable-developer) DEVELOPER=1;;
--disable-developer) DEVELOPER=0;;
--enable-experimental-features) EXPERIMENTAL_FEATURES=1;;
--disable-experimental-features) EXPERIMENTAL_FEATURES=0;;
--enable-compat) COMPAT=1;;
--disable-compat) COMPAT=0;;
--enable-valgrind) VALGRIND=1;;
--disable-valgrind) VALGRIND=0;;
--enable-static) STATIC=1;;
--disable-static) STATIC=0;;
--enable-address-sanitizer) ASAN=1;;
--disable-address-sanitizer) ASAN=0;;
--help|-h) usage;;
*)
echo "Unknown option '$opt'" >&2
usage
;;
esac
done
# Now fill in any unset vars.
set_defaults
# We assume warning flags don't affect congfigurator that much!
echo -n "Compiling $CONFIGURATOR..."
$CC ${CWARNFLAGS-$BASE_WARNFLAGS} $CDEBUGFLAGS $COPTFLAGS -o $CONFIGURATOR $CONFIGURATOR.c
echo "done"
if [ "$ASAN" = "1" ]; then
if [ "$CC" = "clang" ]; then
echo "Address sanitizer (ASAN) is currently only supported with gcc"
exit 1
fi
if [ "$VALGRIND" = "1" ]; then
echo "Address sanitizer (ASAN) and valgrind cannot be enabled at the same time"
exit 1
fi
fi
# Doesn't set a var, but makes sure it exists
require 'python3-mako' "You need the mako module for python3: see doc/INSTALL.md" python3 -c 'import mako'
rm -f $CONFIG_VAR_FILE.$$
$CONFIGURATOR --extra-tests --autotools-style --var-file=$CONFIG_VAR_FILE.$$ --header-file=$CONFIG_HEADER --configurator-cc="$CONFIGURATOR_CC" "$CC" ${CWARNFLAGS-$BASE_WARNFLAGS} $CDEBUGFLAGS $COPTFLAGS <<EOF
var=HAVE_GOOD_LIBSODIUM
desc=libsodium with IETF chacha20 variants
style=DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE
link=-lsodium
code=
#include <sodium.h>
#include <stdio.h>
int main(void)
{
printf("%p\n", crypto_aead_chacha20poly1305_ietf_encrypt);
printf("%d\n", crypto_aead_chacha20poly1305_ietf_NPUBBYTES);
return 0;
}
/*END*/
var=HAVE_SQLITE3_EXPANDED_SQL
desc=sqlite3_expanded_sql
style=DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE
link=-lsqlite3
code=
#include <sqlite3.h>
#include <stdio.h>
int main(void)
{
printf("%p\n", sqlite3_expanded_sql);
return 0;
}
/*END*/
var=HAVE_SQLITE3
desc=sqlite3
style=DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE
link=-lsqlite3
code=
#include <sqlite3.h>
#include <stdio.h>
int main(void)
{
printf("%p\n", sqlite3_prepare_v2);
return 0;
}
/*END*/
var=HAVE_POSTGRES
desc=postgres
style=DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE
link=-lpq
code=
#include <postgresql/libpq-fe.h>
#include <stdio.h>
int main(void)
{
printf("libpq version %d\n", PQlibVersion());
return 0;
}
/*END*/
var=HAVE_GCC
desc=compiler is GCC
style=OUTSIDE_MAIN
code=
#ifndef __GNUC__
#error "Not GCC"
#endif
#ifdef __clang__
#error "clang"
#endif
/*END*/
var=HAVE_MODERN_GCC
desc=GCC version is 7 or above
style=OUTSIDE_MAIN
code=
#if __GNUC__ < 7
#error "Not modern GCC"
#endif
/*END*/
var=HAVE_PWRITEV
desc=pwritev() defined
style=DEFINES_EVERYTHING|EXECUTE|MAY_NOT_COMPILE
code=
#include <sys/uio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main(void)
{
struct iovec iov[2];
int fd = open("/dev/null", O_WRONLY);
iov[0].iov_base = "hello";
iov[0].iov_len = 5;
iov[1].iov_base = " world";
iov[1].iov_len = 6;
if (pwritev(fd, iov, 2, 0) == 11)
return 0;
return 1;
}
/*END*/
EOF
mv $CONFIG_VAR_FILE.$$ $CONFIG_VAR_FILE
# Now we can finally set our warning flags
if [ -z ${CWARNFLAGS+x} ]; then
CWARNFLAGS=$(default_cwarnflags "$COPTFLAGS" \
$(sed -n 's/^HAVE_GCC=//p' < $CONFIG_VAR_FILE) \
$(sed -n 's/^HAVE_MODERN_GCC=//p' < $CONFIG_VAR_FILE) )
fi
add_var PREFIX "$PREFIX"
add_var CC "$CC"
add_var CONFIGURATOR_CC "$CONFIGURATOR_CC"
add_var CWARNFLAGS "$CWARNFLAGS"
add_var CDEBUGFLAGS "$CDEBUGFLAGS"
add_var COPTFLAGS "$COPTFLAGS"
add_var VALGRIND "$VALGRIND"
add_var DEVELOPER "$DEVELOPER" $CONFIG_HEADER
add_var EXPERIMENTAL_FEATURES "$EXPERIMENTAL_FEATURES" $CONFIG_HEADER
add_var COMPAT "$COMPAT" $CONFIG_HEADER
add_var PYTEST "$PYTEST"
add_var STATIC "$STATIC"
add_var ASAN "$ASAN"
add_var TEST_NETWORK "$TEST_NETWORK"
# Hack to avoid sha256 name clash with libwally: will be fixed when that
# becomes a standalone shared lib.
echo '#include "ccan_compat.h"' >> $CONFIG_HEADER