configure: move toolchain init to a function

[mirror_iproute2.git] / configure

diff --git a/configure b/configure
old mode 100644 (file)
new mode 100755 (executable)
index dc14e54..ea1038d
--- a/configure
+++ b/configure
@@ -3,12 +3,21 @@
 #
 INCLUDE=${1:-"$PWD/include"}
 
-echo "# Generated config based on" $INCLUDE >Config
+# Make a temp directory in build tree.
+TMPDIR=$(mktemp -d config.XXXXXX)
+trap 'status=$?; rm -rf $TMPDIR; exit $status' EXIT HUP INT QUIT TERM
 
-echo "TC schedulers"
+check_toolchain()
+{
+: ${PKG_CONFIG:=pkg-config}
+: ${CC=gcc}
+echo "CC:=${CC}" >>Config
+echo "PKG_CONFIG:=${PKG_CONFIG}" >>Config
+}
 
-echo -n " ATM  "
-cat >/tmp/atmtest.c <<EOF
+check_atm()
+{
+cat >$TMPDIR/atmtest.c <<EOF
 #include <atm.h>
 int main(int argc, char **argv) {
        struct atm_qos qos;
@@ -16,7 +25,7 @@ int main(int argc, char **argv) {
        return 0;
 }
 EOF
-gcc -I$INCLUDE -o /tmp/atmtest /tmp/atmtest.c -latm >/dev/null 2>&1 
+$CC -I$INCLUDE -o $TMPDIR/atmtest $TMPDIR/atmtest.c -latm >/dev/null 2>&1
 if [ $? -eq 0 ]
 then
     echo "TC_CONFIG_ATM:=y" >>Config
@@ -24,4 +33,220 @@ then
 else
     echo no
 fi
-rm -f /tmp/atmtest.c /tmp/atmtest
+rm -f $TMPDIR/atmtest.c $TMPDIR/atmtest
+}
+
+check_xt()
+{
+#check if we have xtables from iptables >= 1.4.5.
+cat >$TMPDIR/ipttest.c <<EOF
+#include <xtables.h>
+#include <linux/netfilter.h>
+static struct xtables_globals test_globals = {
+       .option_offset = 0,
+       .program_name = "tc-ipt",
+       .program_version = XTABLES_VERSION,
+       .orig_opts = NULL,
+       .opts = NULL,
+       .exit_err = NULL,
+};
+
+int main(int argc, char **argv)
+{
+       xtables_init_all(&test_globals, NFPROTO_IPV4);
+       return 0;
+}
+
+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
+       echo "using xtables"
+fi
+rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
+}
+
+check_xt_old()
+{
+# bail if previous XT checks has already succeded.
+if grep TC_CONFIG_XT Config > /dev/null
+then
+       return
+fi
+
+#check if we dont need our internal header ..
+cat >$TMPDIR/ipttest.c <<EOF
+#include <xtables.h>
+char *lib_dir;
+unsigned int global_option_offset = 0;
+const char *program_version = XTABLES_VERSION;
+const char *program_name = "tc-ipt";
+struct afinfo afinfo = {
+       .libprefix      = "libxt_",
+};
+
+void exit_error(enum exittype status, const char *msg, ...)
+{
+}
+
+int main(int argc, char **argv) {
+
+       return 0;
+}
+
+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
+       echo "using old xtables (no need for xt-internal.h)"
+fi
+rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
+}
+
+check_xt_old_internal_h()
+{
+# bail if previous XT checks has already succeded.
+if grep TC_CONFIG_XT Config > /dev/null
+then
+       return
+fi
+
+#check if we need our own internal.h
+cat >$TMPDIR/ipttest.c <<EOF
+#include <xtables.h>
+#include "xt-internal.h"
+char *lib_dir;
+unsigned int global_option_offset = 0;
+const char *program_version = XTABLES_VERSION;
+const char *program_name = "tc-ipt";
+struct afinfo afinfo = {
+       .libprefix      = "libxt_",
+};
+
+void exit_error(enum exittype status, const char *msg, ...)
+{
+}
+
+int main(int argc, char **argv) {
+
+       return 0;
+}
+
+EOF
+$CC -I$INCLUDE $IPTC -o $TMPDIR/ipttest $TMPDIR/ipttest.c $IPTL -ldl >/dev/null 2>&1
+
+if [ $? -eq 0 ]
+then
+       echo "using old xtables with xt-internal.h"
+       echo "TC_CONFIG_XT_OLD_H:=y" >>Config
+fi
+rm -f $TMPDIR/ipttest.c $TMPDIR/ipttest
+}
+
+check_ipt()
+{
+       if ! grep TC_CONFIG_XT Config > /dev/null
+       then
+               echo "using iptables"
+       fi
+}
+
+check_ipt_lib_dir()
+{
+       IPT_LIB_DIR=$(${PKG_CONFIG} --variable=xtlibdir xtables)
+       if [ -n "$IPT_LIB_DIR" ]; then
+               echo $IPT_LIB_DIR
+               echo "IPT_LIB_DIR:=$IPT_LIB_DIR" >> Config
+               return
+       fi
+
+       for dir in /lib /usr/lib /usr/local/lib
+       do
+               for file in $dir/{xtables,iptables}/lib*t_*so ; do
+                       if [ -f $file ]; then
+                               echo ${file%/*}
+                               echo "IPT_LIB_DIR:=${file%/*}" >> Config
+                               return
+                       fi
+               done
+       done
+       echo "not found!"
+}
+
+check_setns()
+{
+cat >$TMPDIR/setnstest.c <<EOF
+#include <sched.h>
+int main(int argc, char **argv) 
+{
+       (void)setns(0,0);
+       return 0;
+}
+EOF
+$CC -I$INCLUDE -o $TMPDIR/setnstest $TMPDIR/setnstest.c >/dev/null 2>&1
+if [ $? -eq 0 ]
+then
+       echo "IP_CONFIG_SETNS:=y" >>Config
+       echo "yes"
+else
+       echo "no"
+fi
+rm -f $TMPDIR/setnstest.c $TMPDIR/setnstest
+}
+
+check_ipset()
+{
+cat >$TMPDIR/ipsettest.c <<EOF
+#include <linux/netfilter/ipset/ip_set.h>
+#ifndef IP_SET_INVALID
+#define IPSET_DIM_MAX 3
+typedef unsigned short ip_set_id_t;
+#endif
+#include <linux/netfilter/xt_set.h>
+
+struct xt_set_info info;
+#if IPSET_PROTOCOL == 6
+int main(void)
+{
+       return IPSET_MAXNAMELEN;
+}
+#else
+#error unknown ipset version
+#endif
+EOF
+
+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"
+fi
+rm -f $TMPDIR/ipsettest.c $TMPDIR/ipsettest
+}
+
+echo "# Generated config based on" $INCLUDE >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
+
+echo -n " IPSET  "
+check_ipset
+
+echo -n "iptables modules directory: "
+check_ipt_lib_dir
+
+echo -n "libc has setns: "
+check_setns