f2a80dc09f
libnl and libnl-3 are known to conflict with each other, so detect and abort if these two libs are both used directly (e.g. Open MPI uses libnl-3) or indirectly (e.g. libibverbs.so might depend on libnl)
281 строка
12 KiB
Bash
281 строка
12 KiB
Bash
dnl -*- shell-script -*-
|
|
dnl
|
|
dnl Copyright (c) 2015-2016 Research Organization for Information Science
|
|
dnl and Technology (RIST). All rights reserved.
|
|
dnl $COPYRIGHT$
|
|
dnl
|
|
dnl Additional copyrights may follow
|
|
dnl
|
|
dnl $HEADER$
|
|
dnl
|
|
|
|
dnl
|
|
dnl More libnl v1/v3 sadness: the two versions are not compatible
|
|
dnl and will not work correctly if simultaneously linked into the
|
|
dnl same applications. Unfortunately, they *will* link into the
|
|
dnl same image! On platforms like CentOS 7, libibverbs depends on
|
|
dnl libnl-3.so.200 and friends, so if libnl3-devel packages are not
|
|
dnl installed, but libnl-devel are, Open MPI should not try to use libnl.
|
|
dnl
|
|
dnl GROSS: libnl wants us to either use pkg-config (which we
|
|
dnl can't assume is always present) or we need to look in a
|
|
dnl particular directory for the right libnl3 include files. For
|
|
dnl now, just hard code the special path into this logic.
|
|
dnl
|
|
dnl _OPAL_CHECK_PACKAGE_LIB() invokes OPAL_LIBNL_SANITY_CHECK() in order
|
|
dnl to keep track of which libraries depend on libnl and which libraries
|
|
dnl depend on libnl3.
|
|
dnl Open MPI will not be able to build a component vs a given version of libnl
|
|
dnl if the other libnl version is required by some third party components.
|
|
dnl At the end of configure, display a summary of who is using what, and aborts
|
|
dnl if both libnl versions are required.
|
|
|
|
dnl OPAL_LIBNL_SANITY_INIT()
|
|
dnl --------------------------------------------------------------------
|
|
AC_DEFUN([OPAL_LIBNL_SANITY_INIT], [
|
|
opal_libnl_version=0
|
|
opal_libnlv1_libs=
|
|
opal_libnlv3_libs=
|
|
AC_ARG_WITH([libnl],
|
|
[AC_HELP_STRING([--with-libnl(=DIR)],
|
|
[Directory prefix for libnl (typically only necessary if libnl is installed in a location that the compiler/linker will not search by default)])])
|
|
|
|
# The --with options carry two pieces of information: 1) do
|
|
# you want a specific version of libnl, and 2) where that
|
|
# version of libnl lives. For simplicity, let's separate
|
|
# those two pieces of information.
|
|
case "$with_libnl" in
|
|
no)
|
|
# Nope, don't want it
|
|
opal_want_libnl=no
|
|
;;
|
|
"")
|
|
# Just try to build with libnl
|
|
opal_want_libnl=try
|
|
opal_libnl_location=
|
|
;;
|
|
yes)
|
|
# Yes, definitely want it
|
|
opal_want_libnl=yes
|
|
opal_libnl_location=
|
|
;;
|
|
*)
|
|
# Yes, definitely want it -- at a specific location
|
|
opal_want_libnl=yes
|
|
opal_libnl_location=$with_libnl
|
|
;;
|
|
esac
|
|
])
|
|
|
|
dnl OPAL_LIBNL_SANITY_CHECK(lib, function, LIBS)
|
|
dnl --------------------------------------------------------------------
|
|
AC_DEFUN([OPAL_LIBNL_SANITY_CHECK], [
|
|
case $host in
|
|
*linux*)
|
|
OPAL_VAR_SCOPE_PUSH([ldd_output libnl_version])
|
|
AC_LANG_PUSH(C)
|
|
cat > conftest_c.$ac_ext << EOF
|
|
extern void $2 (void);
|
|
int main(int argc, char *argv[[]]) {
|
|
$2 ();
|
|
return 0;
|
|
}
|
|
EOF
|
|
OPAL_LOG_COMMAND([$CC -o conftest $CFLAGS $CPPFLAGS conftest_c.$ac_ext $LDFLAGS -l$1 $LIBS $3],
|
|
[ldd_output=`ldd conftest`
|
|
libnl_version=0
|
|
AS_IF([echo $ldd_output | grep -q libnl.so],
|
|
[AS_IF([test $opal_libnl_version -eq 3],
|
|
[AC_MSG_WARN([lib nl version conflict: $opal_libnlv3_libs requires libnl-3 whereas $1 requires libnl])],
|
|
[opal_libnlv1_libs="$opal_libnlv1_libs $1"
|
|
OPAL_UNIQ([opal_libnlv1_libs])
|
|
opal_libnl_version=1])
|
|
libnl_version=1])
|
|
AS_IF([echo $ldd_output | grep -q libnl-3.so],
|
|
[AS_IF([test $libnl_version -eq 1],
|
|
[AC_MSG_WARN([lib $1 requires both libnl v1 and libnl v3 -- yoinks!])
|
|
AC_MSG_WARN([This is a configuration that is known to cause run-time crashes])
|
|
AC_MSG_ERROR([Cannot continue])])
|
|
AS_IF([test $opal_libnl_version -eq 1],
|
|
[AC_MSG_WARN([lib nl version conflict: $opal_libnlv1_libs requires libnl whereas $1 requires libnl-3])],
|
|
[opal_libnlv3_libs="$opal_libnlv3_libs $1"
|
|
OPAL_UNIQ([opal_libnlv3_libs])
|
|
opal_libnl_version=3])])
|
|
rm -f conftest conftest_c.$ac_ext],
|
|
[AC_MSG_WARN([Could not link a simple program with lib $1])])
|
|
AC_LANG_POP(C)
|
|
OPAL_VAR_SCOPE_POP([ldd_output libnl_version])
|
|
;;
|
|
esac
|
|
])
|
|
|
|
dnl
|
|
dnl Check for libnl-3.
|
|
dnl
|
|
dnl Inputs:
|
|
dnl
|
|
dnl $1: prefix where to look for libnl-3
|
|
dnl $2: var name prefix of _CPPFLAGS and _LDFLAGS and _LIBS
|
|
dnl
|
|
dnl Outputs:
|
|
dnl
|
|
dnl - Set $2_CPPFLAGS necessary to compile with libnl-3
|
|
dnl - Set $2_LDFLAGS necessary to link with libnl-3
|
|
dnl - Set $2_LIBS necessary to link with libnl-3
|
|
dnl - Set OPAL_HAVE_LIBNL3 1 if libnl-3 will be used
|
|
dnl
|
|
AC_DEFUN([OPAL_CHECK_LIBNL_V3],[
|
|
OPAL_VAR_SCOPE_PUSH([CPPFLAGS_save opal_tmp_CPPFLAGS LIBS_save LDFLAGS_save])
|
|
AC_MSG_NOTICE([checking for libnl v3])
|
|
|
|
AS_IF([test "$opal_want_libnl" != "no"],
|
|
[AS_IF([test -z "$opal_libnl_location"],
|
|
[AC_MSG_CHECKING([for /usr/include/libnl3])
|
|
AS_IF([test -d "/usr/include/libnl3"],
|
|
[opal_tmp_CPPFLAGS=-I/usr/include/libnl3
|
|
opal_libnlv3_happy=1
|
|
AC_MSG_RESULT([found])],
|
|
[AC_MSG_RESULT([not found])
|
|
AC_MSG_CHECKING([for /usr/local/include/libnl3])
|
|
AS_IF([test -d "/usr/local/include/libnl3"],
|
|
[opal_tmp_CPPFLAGS=-I/usr/local/include/netlink3
|
|
opal_libnlv3_happy=1
|
|
AC_MSG_RESULT([found])],
|
|
[opal_libnlv3_happy=0
|
|
AC_MSG_RESULT([not found])])])],
|
|
[AC_MSG_CHECKING([for $1/include/libnl3])
|
|
AS_IF([test -d "$1/include/libnl3"],
|
|
[opal_tmp_CPPFLAGS="-I$1/include/libnl3"
|
|
opal_libnlv3_happy=1
|
|
AC_MSG_RESULT([found])],
|
|
[opal_libnlv3_happy=0
|
|
AC_MSG_RESULT([not found])])])
|
|
CPPFLAGS_save=$CPPFLAGS
|
|
CPPFLAGS="$opal_tmp_CPPFLAGS $CPPFLAGS"
|
|
|
|
# Random note: netlink/version.h is only in libnl v3 - it is not in libnl v1.
|
|
# Also, nl_recvmsgs_report is only in libnl v3.
|
|
AS_IF([test $opal_libnlv3_happy -eq 1],
|
|
[OPAL_CHECK_PACKAGE([$2],
|
|
[netlink/version.h],
|
|
[nl-3],
|
|
[nl_recvmsgs_report],
|
|
[],
|
|
[$1],
|
|
[],
|
|
[],
|
|
[opal_libnlv3_happy=0])
|
|
|
|
# Note that OPAL_CHECK_PACKAGE is going to add
|
|
# -I$dir/include into $2_CPPFLAGS. But because libnl v3
|
|
# puts the headers in $dir/include/libnl3, we need to
|
|
# overwrite $2_CPPFLAGS with -I$dir/include/libnl3. We can do
|
|
# this unconditionally; we don't have to check for
|
|
# success (checking for success occurs below).
|
|
$2_CPPFLAGS=$opal_tmp_CPPFLAGS])
|
|
|
|
# If we found libnl-3, we *also* need libnl-route-3
|
|
LIBS_save=$LIBS
|
|
LDFLAGS_save=$LDFLAGS
|
|
AS_IF([test -n "$$2_LDFLAGS"],
|
|
[LDFLAGS="$$2_LDFLAGS $LDFLAGS"])
|
|
AS_IF([test $opal_libnlv3_happy -eq 1],
|
|
[AC_SEARCH_LIBS([nl_rtgen_request],
|
|
[nl-route-3],
|
|
[],
|
|
[opal_libnlv3_happy=0])])
|
|
LIBS=$LIBS_save
|
|
LDFLAGS=$LDFLAGS_save
|
|
|
|
# Just because libnl* is evil, double check that the
|
|
# netlink/version.h we found was for libnl v3. As far as we
|
|
# know, netlink/version.h only first appeared in version
|
|
# 3... but let's really be sure.
|
|
AS_IF([test $opal_libnlv3_happy -eq 1],
|
|
[AC_MSG_CHECKING([to ensure these really are libnl v3 headers])
|
|
AS_IF([test -n "$$2_CPPFLAGS"],
|
|
[CPPFLAGS="$$2_CPPFLAGS $CPPFLAGS"])
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <netlink/netlink.h>
|
|
#include <netlink/version.h>
|
|
#ifndef LIBNL_VER_MAJ
|
|
#error "LIBNL_VER_MAJ not defined!"
|
|
#endif
|
|
/* to the best of our knowledge, version.h only exists in libnl v3 */
|
|
#if LIBNL_VER_MAJ != 3
|
|
#error "LIBNL_VER_MAJ != 3, I am sad"
|
|
#endif
|
|
]])],
|
|
[AC_MSG_RESULT([yes])],
|
|
[AC_MSG_RESULT([no])
|
|
opal_libnlv3_happy=0])])
|
|
|
|
CPPFLAGS=$CPPFLAGS_save],
|
|
|
|
[opal_libnlv3_happy=0])
|
|
|
|
# If we found everything
|
|
AS_IF([test $opal_libnlv3_happy -eq 1],
|
|
[$2_LIBS="-lnl-3 -lnl-route-3"
|
|
OPAL_HAVE_LIBNL3=1])
|
|
|
|
OPAL_VAR_SCOPE_POP
|
|
])
|
|
|
|
dnl
|
|
dnl Check for libnl.
|
|
dnl
|
|
dnl Inputs:
|
|
dnl
|
|
dnl $1: prefix where to look for libnl
|
|
dnl $2: var name prefix of _CPPFLAGS and _LDFLAGS and _LIBS
|
|
dnl
|
|
dnl Outputs:
|
|
dnl
|
|
dnl - Set $2_CPPFLAGS necessary to compile with libnl
|
|
dnl - Set $2_LDFLAGS necessary to link with libnl
|
|
dnl - Set $2_LIBS necessary to link with libnl
|
|
dnl - Set OPAL_HAVE_LIBNL3 0 if libnl will be used
|
|
dnl
|
|
AC_DEFUN([OPAL_CHECK_LIBNL_V1],[
|
|
AC_MSG_NOTICE([checking for libnl v1])
|
|
|
|
AS_IF([test "$opal_want_libnl" != "no"],
|
|
[OPAL_CHECK_PACKAGE([$2],
|
|
[netlink/netlink.h],
|
|
[nl],
|
|
[nl_connect],
|
|
[-lm],
|
|
[$1],
|
|
[],
|
|
[opal_libnlv1_happy=1],
|
|
[opal_libnlv1_happy=0])],
|
|
[opal_libnlv1_happy=0])
|
|
|
|
AS_IF([test $opal_libnlv1_happy -eq 1],
|
|
[$2_LIBS="-lnl -lm"
|
|
OPAL_HAVE_LIBNL3=0])
|
|
])
|
|
|
|
dnl
|
|
dnl Summarize libnl and libnl3 usage,
|
|
dnl and abort if conflict is found
|
|
dnl
|
|
dnl Print the list of libraries that use libnl,
|
|
dnl the list of libraries that use libnl3,
|
|
dnl and aborts if both libnl and libnl3 are used.
|
|
dnl
|
|
AC_DEFUN([OPAL_CHECK_LIBNL_SUMMARY],[
|
|
AC_MSG_CHECKING([for libraries that use libnl v1])
|
|
AS_IF([test -n "$opal_libnlv1_libs"],
|
|
[AC_MSG_RESULT([$opal_libnlv1_libs])],
|
|
[AC_MSG_RESULT([(none)])])
|
|
AC_MSG_CHECKING([for libraries that use libnl v3])
|
|
AS_IF([test -n "$opal_libnlv3_libs"],
|
|
[AC_MSG_RESULT([$opal_libnlv3_libs])],
|
|
[AC_MSG_RESULT([(none)])])
|
|
AS_IF([test -n "$opal_libnlv1_libs" && test -n "$opal_libnlv3_libs"],
|
|
[AC_MSG_WARN([libnl v1 and libnl v3 have been found as dependent libraries])
|
|
AC_ERROR([This is a configuration that is known to cause run-time crashes])])
|
|
])
|