-#! /bin/bash
+#!/bin/sh
+# SPDX-License-Identifier: GPL-2.0
# This is not an autoconf generated configure
#
+# Influential LIBBPF environment variables:
+# LIBBPF_FORCE={on,off} on: require link against libbpf;
+# off: disable libbpf probing
+# LIBBPF_DIR Path to libbpf DESTDIR to use
+
INCLUDE=${1:-"$PWD/include"}
+# Output file which is input to Makefile
+CONFIG=config.mk
+
# Make a temp directory in build tree.
TMPDIR=$(mktemp -d config.XXXXXX)
trap 'status=$?; rm -rf $TMPDIR; exit $status' EXIT HUP INT QUIT TERM
-check_prog()
-{
- echo -n "$2"
- command -v $1 >/dev/null 2>&1 && (echo "$3:=y" >> Config; echo "yes") || (echo "no"; return 1)
-}
-
-check_docs()
-{
- if check_prog latex " latex: " HAVE_LATEX; then
- check_prog pdflatex " pdflatex: " HAVE_PDFLATEX || echo " WARNING: no PDF docs can be built from LaTeX files"
- check_prog sgml2latex " sgml2latex: " HAVE_SGML2LATEX || echo " WARNING: no LaTeX files can be build from SGML files"
- else
- echo " WARNING: no docs can be built from LaTeX files"
- fi
-
- check_prog sgml2html " sgml2html: " HAVE_SGML2HTML || echo " WARNING: no HTML docs can be built from SGML"
-}
-
check_toolchain()
{
: ${PKG_CONFIG:=pkg-config}
: ${AR=ar}
: ${CC=gcc}
- echo "PKG_CONFIG:=${PKG_CONFIG}" >>Config
- echo "AR:=${AR}" >>Config
- echo "CC:=${CC}" >>Config
+ : ${YACC=bison}
+ echo "PKG_CONFIG:=${PKG_CONFIG}" >>$CONFIG
+ echo "AR:=${AR}" >>$CONFIG
+ echo "CC:=${CC}" >>$CONFIG
+ echo "YACC:=${YACC}" >>$CONFIG
}
check_atm()
}
EOF
- $CC -I$INCLUDE -o $TMPDIR/atmtest $TMPDIR/atmtest.c -latm >/dev/null 2>&1
- if [ $? -eq 0 ]
- then
- echo "TC_CONFIG_ATM:=y" >>Config
+ if $CC -I$INCLUDE -o $TMPDIR/atmtest $TMPDIR/atmtest.c -latm >/dev/null 2>&1; then
+ echo "TC_CONFIG_ATM:=y" >>$CONFIG
echo yes
else
echo no
rm -f $TMPDIR/atmtest.c $TMPDIR/atmtest
}
+check_xtables()
+{
+ if ! ${PKG_CONFIG} xtables --exists; then
+ echo "TC_CONFIG_NO_XT:=y" >>$CONFIG
+ fi
+}
+
check_xt()
{
#check if we have xtables from iptables >= 1.4.5.
EOF
if $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL \
- $(${PKG_CONFIG} xtables --cflags --libs) -ldl >/dev/null 2>&1
- then
- echo "TC_CONFIG_XT:=y" >>Config
+ $(${PKG_CONFIG} xtables --cflags --libs) -ldl >/dev/null 2>&1; then
+ echo "TC_CONFIG_XT:=y" >>$CONFIG
echo "using xtables"
fi
rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
check_xt_old()
{
- # bail if previous XT checks has already succeded.
- if grep -q TC_CONFIG_XT Config
- then
- return
- fi
+ # bail if previous XT checks has already succeeded.
+ grep -q TC_CONFIG_XT $CONFIG && return
- #check if we dont need our internal header ..
+ #check if we don't need our internal header ..
cat >$TMPDIR/ipttest.c <<EOF
#include <xtables.h>
char *lib_dir;
EOF
- $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
- if [ $? -eq 0 ]
- then
- echo "TC_CONFIG_XT_OLD:=y" >>Config
+ if $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1; then
+ echo "TC_CONFIG_XT_OLD:=y" >>$CONFIG
echo "using old xtables (no need for xt-internal.h)"
fi
rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
check_xt_old_internal_h()
{
- # bail if previous XT checks has already succeded.
- if grep -q TC_CONFIG_XT Config
- then
- return
- fi
+ # bail if previous XT checks has already succeeded.
+ grep -q TC_CONFIG_XT $CONFIG && return
#check if we need our own internal.h
cat >$TMPDIR/ipttest.c <<EOF
}
EOF
- $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
-
- if [ $? -eq 0 ]
- then
+ if $CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1; then
echo "using old xtables with xt-internal.h"
- echo "TC_CONFIG_XT_OLD_H:=y" >>Config
+ echo "TC_CONFIG_XT_OLD_H:=y" >>$CONFIG
fi
rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
}
check_ipt()
{
- if ! grep TC_CONFIG_XT Config > /dev/null
- then
+ if ! grep TC_CONFIG_XT $CONFIG > /dev/null; then
echo "using iptables"
fi
}
IPT_LIB_DIR=$(${PKG_CONFIG} --variable=xtlibdir xtables)
if [ -n "$IPT_LIB_DIR" ]; then
echo $IPT_LIB_DIR
- echo "IPT_LIB_DIR:=$IPT_LIB_DIR" >> Config
+ echo "IPT_LIB_DIR:=$IPT_LIB_DIR" >> $CONFIG
return
fi
- for dir in /lib /usr/lib /usr/local/lib
- do
- for file in $dir/{xtables,iptables}/lib*t_*so ; do
+ for dir in /lib /usr/lib /usr/local/lib; do
+ for file in "xtables" "iptables"; do
+ file="$dir/$file/lib*t_*so"
if [ -f $file ]; then
echo ${file%/*}
- echo "IPT_LIB_DIR:=${file%/*}" >> Config
+ echo "IPT_LIB_DIR:=${file%/*}" >> $CONFIG
return
fi
done
return 0;
}
EOF
- $CC -I$INCLUDE -o $TMPDIR/setnstest $TMPDIR/setnstest.c >/dev/null 2>&1
- if [ $? -eq 0 ]
- then
- echo "IP_CONFIG_SETNS:=y" >>Config
+ if $CC -I$INCLUDE -o $TMPDIR/setnstest $TMPDIR/setnstest.c >/dev/null 2>&1; then
+ echo "IP_CONFIG_SETNS:=y" >>$CONFIG
echo "yes"
+ echo "CFLAGS += -DHAVE_SETNS" >>$CONFIG
else
echo "no"
fi
#include <linux/netfilter/xt_set.h>
struct xt_set_info info;
-#if IPSET_PROTOCOL == 6
+#if IPSET_PROTOCOL == 6 || IPSET_PROTOCOL == 7
int main(void)
{
return IPSET_MAXNAMELEN;
#endif
EOF
- if $CC -I$INCLUDE -o $TMPDIR/ipsettest $TMPDIR/ipsettest.c >/dev/null 2>&1
- then
- echo "TC_CONFIG_IPSET:=y" >>Config
+ if $CC -I$INCLUDE -o $TMPDIR/ipsettest $TMPDIR/ipsettest.c >/dev/null 2>&1; then
+ echo "TC_CONFIG_IPSET:=y" >>$CONFIG
echo "yes"
else
echo "no"
check_elf()
{
- cat >$TMPDIR/elftest.c <<EOF
-#include <libelf.h>
-#include <gelf.h>
-int main(void)
+ if ${PKG_CONFIG} libelf --exists; then
+ echo "HAVE_ELF:=y" >>$CONFIG
+ echo "yes"
+
+ echo 'CFLAGS += -DHAVE_ELF' `${PKG_CONFIG} libelf --cflags` >> $CONFIG
+ echo 'LDLIBS += ' `${PKG_CONFIG} libelf --libs` >>$CONFIG
+ else
+ echo "no"
+ fi
+}
+
+have_libbpf_basic()
{
- Elf_Scn *scn;
- GElf_Shdr shdr;
- return elf_version(EV_CURRENT);
+ cat >$TMPDIR/libbpf_test.c <<EOF
+#include <bpf/libbpf.h>
+int main(int argc, char **argv) {
+ bpf_program__set_autoload(NULL, false);
+ bpf_map__ifindex(NULL);
+ bpf_map__set_pin_path(NULL, NULL);
+ bpf_object__open_file(NULL, NULL);
+ return 0;
}
EOF
- if $CC -I$INCLUDE -o $TMPDIR/elftest $TMPDIR/elftest.c -lelf >/dev/null 2>&1
- then
- echo "TC_CONFIG_ELF:=y" >>Config
- echo "yes"
+ $CC -o $TMPDIR/libbpf_test $TMPDIR/libbpf_test.c $LIBBPF_CFLAGS $LIBBPF_LDLIBS >/dev/null 2>&1
+ local ret=$?
+
+ rm -f $TMPDIR/libbpf_test.c $TMPDIR/libbpf_test
+ return $ret
+}
+
+have_libbpf_sec_name()
+{
+ cat >$TMPDIR/libbpf_sec_test.c <<EOF
+#include <bpf/libbpf.h>
+int main(int argc, char **argv) {
+ void *ptr;
+ bpf_program__section_name(NULL);
+ return 0;
+}
+EOF
+
+ $CC -o $TMPDIR/libbpf_sec_test $TMPDIR/libbpf_sec_test.c $LIBBPF_CFLAGS $LIBBPF_LDLIBS >/dev/null 2>&1
+ local ret=$?
+
+ rm -f $TMPDIR/libbpf_sec_test.c $TMPDIR/libbpf_sec_test
+ return $ret
+}
+
+check_force_libbpf_on()
+{
+ # if set LIBBPF_FORCE=on but no libbpf support, just exist the config
+ # process to make sure we don't build without libbpf.
+ if [ "$LIBBPF_FORCE" = on ]; then
+ echo " LIBBPF_FORCE=on set, but couldn't find a usable libbpf"
+ exit 1
+ fi
+}
+
+check_libbpf()
+{
+ # if set LIBBPF_FORCE=off, disable libbpf entirely
+ if [ "$LIBBPF_FORCE" = off ]; then
+ echo "no"
+ return
+ fi
+
+ if ! ${PKG_CONFIG} libbpf --exists && [ -z "$LIBBPF_DIR" ] ; then
+ echo "no"
+ check_force_libbpf_on
+ return
+ fi
+
+ if [ $(uname -m) = x86_64 ]; then
+ local LIBBPF_LIBDIR="${LIBBPF_DIR}/usr/lib64"
else
- echo "no"
+ local LIBBPF_LIBDIR="${LIBBPF_DIR}/usr/lib"
+ fi
+
+ if [ -n "$LIBBPF_DIR" ]; then
+ LIBBPF_CFLAGS="-I${LIBBPF_DIR}/usr/include"
+ LIBBPF_LDLIBS="${LIBBPF_LIBDIR}/libbpf.a -lz -lelf"
+ LIBBPF_VERSION=$(PKG_CONFIG_LIBDIR=${LIBBPF_LIBDIR}/pkgconfig ${PKG_CONFIG} libbpf --modversion)
+ else
+ LIBBPF_CFLAGS=$(${PKG_CONFIG} libbpf --cflags)
+ LIBBPF_LDLIBS=$(${PKG_CONFIG} libbpf --libs)
+ LIBBPF_VERSION=$(${PKG_CONFIG} libbpf --modversion)
fi
- rm -f $TMPDIR/elftest.c $TMPDIR/elftest
+
+ if ! have_libbpf_basic; then
+ echo "no"
+ echo " libbpf version $LIBBPF_VERSION is too low, please update it to at least 0.1.0"
+ check_force_libbpf_on
+ return
+ else
+ echo "HAVE_LIBBPF:=y" >> $CONFIG
+ echo 'CFLAGS += -DHAVE_LIBBPF ' $LIBBPF_CFLAGS >> $CONFIG
+ echo "CFLAGS += -DLIBBPF_VERSION=\\\"$LIBBPF_VERSION\\\"" >> $CONFIG
+ echo 'LDLIBS += ' $LIBBPF_LDLIBS >> $CONFIG
+
+ if [ -z "$LIBBPF_DIR" ]; then
+ echo "CFLAGS += -DLIBBPF_DYNAMIC" >> $CONFIG
+ fi
+ fi
+
+ # bpf_program__title() is deprecated since libbpf 0.2.0, use
+ # bpf_program__section_name() instead if we support
+ if have_libbpf_sec_name; then
+ echo "HAVE_LIBBPF_SECTION_NAME:=y" >> $CONFIG
+ echo 'CFLAGS += -DHAVE_LIBBPF_SECTION_NAME ' >> $CONFIG
+ fi
+
+ echo "yes"
+ echo " libbpf version $LIBBPF_VERSION"
}
check_selinux()
# SELinux is a compile time option in the ss utility
{
- if ${PKG_CONFIG} libselinux --exists
- then
- echo "HAVE_SELINUX:=y" >>Config
+ if ${PKG_CONFIG} libselinux --exists; then
+ echo "HAVE_SELINUX:=y" >>$CONFIG
echo "yes"
+
+ echo 'LDLIBS +=' `${PKG_CONFIG} --libs libselinux` >>$CONFIG
+ echo 'CFLAGS += -DHAVE_SELINUX' `${PKG_CONFIG} --cflags libselinux` >>$CONFIG
else
echo "no"
fi
check_mnl()
{
- if ${PKG_CONFIG} libmnl --exists
- then
- echo "HAVE_MNL:=y" >>Config
- echo -n "yes"
+ if ${PKG_CONFIG} libmnl --exists; then
+ echo "HAVE_MNL:=y" >>$CONFIG
+ echo "yes"
+
+ echo 'CFLAGS += -DHAVE_LIBMNL' `${PKG_CONFIG} libmnl --cflags` >>$CONFIG
+ echo 'LDLIBS +=' `${PKG_CONFIG} libmnl --libs` >> $CONFIG
+ else
+ echo "no"
+ fi
+}
+
+check_berkeley_db()
+{
+ cat >$TMPDIR/dbtest.c <<EOF
+#include <fcntl.h>
+#include <stdlib.h>
+#include <db_185.h>
+int main(int argc, char **argv) {
+ dbopen("/tmp/xxx_test_db.db", O_CREAT|O_RDWR, 0644, DB_HASH, NULL);
+ return 0;
+}
+EOF
+ if $CC -I$INCLUDE -o $TMPDIR/dbtest $TMPDIR/dbtest.c -ldb >/dev/null 2>&1; then
+ echo "HAVE_BERKELEY_DB:=y" >>$CONFIG
+ echo "yes"
+ else
+ echo "no"
+ fi
+ rm -f $TMPDIR/dbtest.c $TMPDIR/dbtest
+}
+
+check_strlcpy()
+{
+ cat >$TMPDIR/strtest.c <<EOF
+#include <string.h>
+int main(int argc, char **argv) {
+ char dst[10];
+ strlcpy(dst, "test", sizeof(dst));
+ return 0;
+}
+EOF
+ if $CC -I$INCLUDE -o $TMPDIR/strtest $TMPDIR/strtest.c >/dev/null 2>&1; then
+ echo "no"
+ else
+ if ${PKG_CONFIG} libbsd --exists; then
+ echo 'CFLAGS += -DHAVE_LIBBSD' `${PKG_CONFIG} libbsd --cflags` >>$CONFIG
+ echo 'LDLIBS +=' `${PKG_CONFIG} libbsd --libs` >> $CONFIG
+ echo "no"
+ else
+ echo 'CFLAGS += -DNEED_STRLCPY' >>$CONFIG
+ echo "yes"
+ fi
+ fi
+ rm -f $TMPDIR/strtest.c $TMPDIR/strtest
+}
+
+check_cap()
+{
+ if ${PKG_CONFIG} libcap --exists; then
+ echo "HAVE_CAP:=y" >>$CONFIG
+ echo "yes"
+
+ echo 'CFLAGS += -DHAVE_LIBCAP' `${PKG_CONFIG} libcap --cflags` >>$CONFIG
+ echo 'LDLIBS +=' `${PKG_CONFIG} libcap --libs` >> $CONFIG
else
- echo -n "no"
+ echo "no"
fi
}
-echo "# Generated config based on" $INCLUDE >Config
+quiet_config()
+{
+ cat <<EOF
+# user can control verbosity similar to kernel builds (e.g., V=1)
+ifeq ("\$(origin V)", "command line")
+ VERBOSE = \$(V)
+endif
+ifndef VERBOSE
+ VERBOSE = 0
+endif
+ifeq (\$(VERBOSE),1)
+ Q =
+else
+ Q = @
+endif
+
+ifeq (\$(VERBOSE), 0)
+ QUIET_CC = @echo ' CC '\$@;
+ QUIET_AR = @echo ' AR '\$@;
+ QUIET_LINK = @echo ' LINK '\$@;
+ QUIET_YACC = @echo ' YACC '\$@;
+ QUIET_LEX = @echo ' LEX '\$@;
+endif
+EOF
+}
+
+echo "# Generated config based on" $INCLUDE >$CONFIG
+quiet_config >> $CONFIG
+
check_toolchain
echo "TC schedulers"
echo -n " ATM "
check_atm
-echo -n " IPT "
-check_xt
-check_xt_old
-check_xt_old_internal_h
-check_ipt
+check_xtables
+if ! grep -q TC_CONFIG_NO_XT $CONFIG; then
+ echo -n " IPT "
+ check_xt
+ check_xt_old
+ check_xt_old_internal_h
+ check_ipt
-echo -n " IPSET "
-check_ipset
+ echo -n " IPSET "
+ check_ipset
+fi
-echo -n -e "\niptables modules directory: "
-check_ipt_lib_dir
+echo
+if ! grep -q TC_CONFIG_NO_XT $CONFIG; then
+ echo -n "iptables modules directory: "
+ check_ipt_lib_dir
+fi
echo -n "libc has setns: "
check_setns
echo -n "SELinux support: "
check_selinux
+echo -n "libbpf support: "
+check_libbpf
+
echo -n "ELF support: "
check_elf
echo -n "libmnl support: "
check_mnl
-echo " (required by tipc)"
-echo -e "\nDocs"
-check_docs
-echo ""
+echo -n "Berkeley DB: "
+check_berkeley_db
+
+echo -n "need for strlcpy: "
+check_strlcpy
+
+echo -n "libcap support: "
+check_cap
+
+echo >> $CONFIG
+echo "%.o: %.c" >> $CONFIG
+echo ' $(QUIET_CC)$(CC) $(CFLAGS) $(EXTRA_CFLAGS) $(CPPFLAGS) -c -o $@ $<' >> $CONFIG
projects / mirror_iproute2.git / blobdiff