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[Libguestfs] [PATCH 08/16] configure: Move C library checks to separate file.



---
 configure.ac            | 271 +--------------------------------------------
 m4/guestfs_libraries.m4 | 288 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 290 insertions(+), 269 deletions(-)
 create mode 100644 m4/guestfs_libraries.m4

diff --git a/configure.ac b/configure.ac
index f5303a0..f25fdec 100644
--- a/configure.ac
+++ b/configure.ac
@@ -99,146 +99,8 @@ m4_include([m4/guestfs_progs.m4])
 dnl The C compiler environment.
 m4_include([m4/guestfs_c.m4])
 
-dnl Check if dirent (readdir) supports d_type member.
-AC_STRUCT_DIRENT_D_TYPE
-
-dnl Check if stat has the required fields.
-AC_STRUCT_ST_BLOCKS
-AC_CHECK_MEMBER([struct stat.st_blksize],[
-    AC_DEFINE([HAVE_STRUCT_STAT_ST_BLKSIZE],[1],[Define to 1 if 'st_blksize' is a member of 'struct stat'.])])
-AC_CHECK_MEMBER([struct stat.st_atim.tv_nsec],[
-    AC_DEFINE([HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC],[1],[Define to 1 if 'st_mtim.tv_nsec' is a member of 'struct stat'.])])
-AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec],[
-    AC_DEFINE([HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC],[1],[Define to 1 if 'st_mtim.tv_nsec' is a member of 'struct stat'.])])
-AC_CHECK_MEMBER([struct stat.st_ctim.tv_nsec],[
-    AC_DEFINE([HAVE_STRUCT_STAT_ST_CTIM_TV_NSEC],[1],[Define to 1 if 'st_mtim.tv_nsec' is a member of 'struct stat'.])])
-
-dnl Define a C symbol for the host CPU architecture.
-AC_DEFINE_UNQUOTED([host_cpu],["$host_cpu"],[Host architecture.])
-
-dnl Check if libc has program_invocation_short_name.
-AC_CHECK_DECLS([program_invocation_short_name], [], [], [#include <errno.h>])
-
-dnl Headers.
-AC_CHECK_HEADERS([\
-    attr/xattr.h \
-    byteswap.h \
-    endian.h \
-    sys/endian.h \
-    errno.h \
-    linux/fs.h \
-    linux/raid/md_u.h \
-    printf.h \
-    sys/inotify.h \
-    sys/resource.h \
-    sys/socket.h \
-    sys/statvfs.h \
-    sys/time.h \
-    sys/types.h \
-    sys/un.h \
-    sys/wait.h \
-    windows.h \
-    sys/xattr.h])
-
-dnl Functions.
-AC_CHECK_FUNCS([\
-    be32toh \
-    fsync \
-    futimens \
-    getprogname \
-    getxattr \
-    htonl \
-    htons \
-    inotify_init1 \
-    lgetxattr \
-    listxattr \
-    llistxattr \
-    lsetxattr \
-    lremovexattr \
-    mknod \
-    ntohl \
-    ntohs \
-    posix_fallocate \
-    posix_fadvise \
-    removexattr \
-    setitimer \
-    setrlimit \
-    setxattr \
-    sigaction \
-    statvfs \
-    sync])
-
-dnl Check for UNIX_PATH_MAX, creating a custom one if not available.
-AC_MSG_CHECKING([for UNIX_PATH_MAX])
-AC_COMPILE_IFELSE([
-  AC_LANG_PROGRAM([[
-#include <sys/un.h>
-  ]], [[
-#ifndef UNIX_PATH_MAX
-#error UNIX_PATH_MAX not defined
-#endif
-  ]])], [
-    AC_MSG_RESULT([yes])
-  ], [
-    AC_MSG_RESULT([no])
-    AC_MSG_CHECKING([for size of sockaddr_un.sun_path])
-    AC_COMPUTE_INT(unix_path_max, [sizeof (myaddr.sun_path)], [
-#include <sys/un.h>
-struct sockaddr_un myaddr;
-      ], [
-        AC_MSG_ERROR([cannot get it])
-      ])
-    AC_MSG_RESULT([$unix_path_max])
-    AC_DEFINE_UNQUOTED([UNIX_PATH_MAX], $unix_path_max, [Custom value for UNIX_PATH_MAX])
-  ])
-
-dnl tgetent, tputs and UP [sic] are all required.  They come from the lower
-dnl tinfo library, but might be part of ncurses directly.
-PKG_CHECK_MODULES([LIBTINFO], [tinfo], [], [
-    PKG_CHECK_MODULES([LIBTINFO], [ncurses])
-])
-AC_SUBST([LIBTINFO_CFLAGS])
-AC_SUBST([LIBTINFO_LIBS])
-
-dnl GNU gettext tools (optional).
-AC_CHECK_PROG([XGETTEXT],[xgettext],[xgettext],[no])
-AC_CHECK_PROG([MSGCAT],[msgcat],[msgcat],[no])
-AC_CHECK_PROG([MSGFMT],[msgfmt],[msgfmt],[no])
-AC_CHECK_PROG([MSGMERGE],[msgmerge],[msgmerge],[no])
-
-dnl Check they are the GNU gettext tools.
-AC_MSG_CHECKING([msgfmt is GNU tool])
-if $MSGFMT --version >/dev/null 2>&1 && $MSGFMT --version | grep -q 'GNU gettext'; then
-    msgfmt_is_gnu=yes
-else
-    msgfmt_is_gnu=no
-fi
-AC_MSG_RESULT([$msgfmt_is_gnu])
-AM_CONDITIONAL([HAVE_GNU_GETTEXT],
-    [test "x$XGETTEXT" != "xno" && test "x$MSGCAT" != "xno" && test "x$MSGFMT" != "xno" && test "x$MSGMERGE" != "xno" && test "x$msgfmt_is_gnu" != "xno"])
-
-dnl Check for gettext.
-AM_GNU_GETTEXT([external])
-
-dnl Default backend.
-AC_MSG_CHECKING([if the user specified a default backend])
-AC_ARG_WITH([default-backend],
-    [AS_HELP_STRING([--with-default-backend="direct|libvirt|..."],
-        [set default backend @<:@default=direct@:>@])],
-    [DEFAULT_BACKEND="$withval"],
-    [DEFAULT_BACKEND=direct])
-AC_MSG_RESULT([$DEFAULT_BACKEND])
-AC_DEFINE_UNQUOTED([DEFAULT_BACKEND],["$DEFAULT_BACKEND"],
-                   [Default backend.])
-
-dnl Fail with error if user does --with-default-attach-method.
-AC_ARG_WITH([default-attach-method],
-    [AS_HELP_STRING([--with-default-attach-method="..."],
-        [use --with-default-backend instead])],
-    [AC_MSG_FAILURE([--with-default-attach-method no longer works in
-this version of libguestfs, use
-  ./configure --with-default-backend=$withval
-instead.])])
+dnl Any C libraries required by the libguestfs C library (not the daemon).
+m4_include([m4/guestfs_libraries.m4])
 
 dnl Build the daemon?
 AC_MSG_CHECKING([if we should build the daemon])
@@ -416,61 +278,6 @@ if test "$ac_cv_search_crypt" = "-lcrypt" ; then
 fi
 AC_SUBST([LIBCRYPT_LIBS])
 
-dnl Check for libdl/dlopen (optional - only used to test if the library
-dnl can be used with libdl).
-AC_CHECK_LIB([dl],[dlopen],[have_libdl=yes],[have_libdl=no])
-AC_CHECK_HEADERS([dlfcn.h],[have_dlfcn=yes],[have_dlfcn=no])
-AM_CONDITIONAL([HAVE_LIBDL],
-               [test "x$have_libdl" = "xyes" && test "x$have_dlfcn" = "xyes"])
-
-dnl Check for rpcgen and XDR library.  rpcgen is optional.
-AC_CHECK_PROG([RPCGEN],[rpcgen],[rpcgen],[no])
-AM_CONDITIONAL([HAVE_RPCGEN],[test "x$RPCGEN" != "xno"])
-AC_CHECK_LIB([portablexdr],[xdrmem_create],[],[
-    AC_SEARCH_LIBS([xdrmem_create],[rpc xdr nsl])
-])
-AC_SEARCH_LIBS([xdr_u_int64_t],[portablexdr rpc xdr nsl],[
-    AC_DEFINE([HAVE_XDR_U_INT64_T],[1],[Define to 1 if xdr_u_int64_t() exists.])
-])
-AC_SEARCH_LIBS([xdr_uint64_t],[portablexdr rpc xdr nsl],[
-    AC_DEFINE([HAVE_XDR_UINT64_T],[1],[Define to 1 if xdr_uint64_t() exists.])
-])
-AM_CONDITIONAL([HAVE_XDR_U_INT64_T],
-               [test "x$ac_cv_search_xdr_u_int64_t" != "xno"])
-AM_CONDITIONAL([HAVE_XDR_UINT64_T],
-               [test "x$ac_cv_search_xdr_uint64_t" != "xno"])
-
-dnl Check for libselinux (optional).
-AC_CHECK_HEADERS([selinux/selinux.h])
-AC_CHECK_LIB([selinux],[setexeccon],[
-    have_libselinux="$ac_cv_header_selinux_selinux_h"
-    SELINUX_LIBS="-lselinux"
-
-    old_LIBS="$LIBS"
-    LIBS="$LIBS $SELINUX_LIBS"
-    AC_CHECK_FUNCS([setcon getcon])
-    LIBS="$old_LIBS"
-],[have_libselinux=no])
-if test "x$have_libselinux" = "xyes"; then
-    AC_DEFINE([HAVE_LIBSELINUX],[1],[Define to 1 if you have libselinux.])
-fi
-AC_SUBST([SELINUX_LIBS])
-
-dnl Check for systemtap/DTrace userspace probes (optional).
-dnl Since the probe points break under clang, allow this to be disabled.
-AC_ARG_ENABLE([probes],
-    AS_HELP_STRING([--disable-probes], [disable systemtap/DTrace userspace probes]),
-    [],
-    [enable_probes=yes])
-AS_IF([test "x$enable_probes" != "xno"],[
-    dnl http://sourceware.org/systemtap/wiki/AddingUserSpaceProbingToApps
-    AC_CHECK_HEADERS([sys/sdt.h])
-    dnl AC_CHECK_PROG([DTRACE],[dtrace],[dtrace],[no])
-    AS_IF([test "x$ac_cv_header_sys_sdt_h" = "xyes"],[
-        AC_DEFINE([ENABLE_PROBES],[1],[Enable systemtap/DTrace userspace probes.])
-    ])
-])
-
 dnl liblzma can be used by virt-builder (optional).
 PKG_CHECK_MODULES([LIBLZMA], [liblzma], [
     AC_SUBST([LIBLZMA_CFLAGS])
@@ -488,14 +295,6 @@ PKG_CHECK_MODULES([LIBLZMA], [liblzma], [
 dnl Check for QEMU.
 m4_include([m4/guestfs_qemu.m4])
 
-dnl Enable packet dumps when in verbose mode.  This generates lots
-dnl of debug info, only useful for people debugging the RPC mechanism.
-AC_ARG_ENABLE([packet-dump],[
-    AS_HELP_STRING([--enable-packet-dump],
-        [enable packet dumps in verbose mode @<:@default=no@:>@])],
-    [AC_DEFINE([ENABLE_PACKET_DUMP],[1],[Enable packet dumps in verbose mode.])],
-    [])
-
 dnl Readline.
 AC_ARG_WITH([readline],[
     AS_HELP_STRING([--with-readline],
@@ -521,20 +320,6 @@ AS_IF([test "x$with_readline" != xno],[
     LIBS="$old_LIBS"
     ])
 
-dnl Check for PCRE (required)
-PKG_CHECK_MODULES([PCRE], [libpcre])
-
-dnl Check for Augeas >= 1.0.0 (required).
-PKG_CHECK_MODULES([AUGEAS],[augeas >= 1.0.0])
-
-dnl libmagic (highly recommended)
-AC_CHECK_LIB([magic],[magic_file],[
-    AC_CHECK_HEADER([magic.h],[
-        AC_SUBST([MAGIC_LIBS], ["-lmagic"])
-        AC_DEFINE([HAVE_LIBMAGIC],[1],[libmagic found at compile time.])
-    ], [])
-],[AC_MSG_WARN([libmagic not found, some core features will be disabled])])
-
 dnl POSIX acl library (highly recommended)
 AC_CHECK_LIB([acl],[acl_from_text],[
     AC_CHECK_HEADER([sys/acl.h],[
@@ -551,32 +336,6 @@ AC_CHECK_LIB([cap],[cap_from_text],[
     ], [])
 ],[AC_MSG_WARN([Linux capabilities library (libcap) not found])])
 
-dnl libvirt (highly recommended)
-AC_ARG_WITH([libvirt],[
-    AS_HELP_STRING([--without-libvirt],
-                   [disable libvirt support @<:@default=check@:>@])],
-    [],
-    [with_libvirt=check])
-AS_IF([test "$with_libvirt" != "no"],[
-    PKG_CHECK_MODULES([LIBVIRT], [libvirt],[
-        AC_SUBST([LIBVIRT_CFLAGS])
-        AC_SUBST([LIBVIRT_LIBS])
-        AC_DEFINE([HAVE_LIBVIRT],[1],[libvirt found at compile time.])
-    ],
-    [AC_MSG_WARN([libvirt not found, some core features will be disabled])])
-])
-AM_CONDITIONAL([HAVE_LIBVIRT],[test "x$LIBVIRT_LIBS" != "x"])
-
-libvirt_ro_uri='qemu+unix:///system?socket=/var/run/libvirt/libvirt-sock-ro'
-AC_SUBST([libvirt_ro_uri])
-
-dnl libxml2 (required)
-PKG_CHECK_MODULES([LIBXML2], [libxml-2.0])
-old_LIBS="$LIBS"
-LIBS="$LIBS $LIBXML2_LIBS"
-AC_CHECK_FUNCS([xmlBufferDetach])
-LIBS="$old_LIBS"
-
 dnl libconfig (highly recommended)
 PKG_CHECK_MODULES([LIBCONFIG], [libconfig],[
     AC_SUBST([LIBCONFIG_CFLAGS])
@@ -643,24 +402,6 @@ AS_IF([test "x$enable_fuse" != "xno"],[
 ])
 AM_CONDITIONAL([HAVE_FUSE],[test "x$enable_fuse" != "xno"])
 
-dnl Check for yajl JSON library (optional).
-PKG_CHECK_MODULES([YAJL], [yajl >= 2.0.4], [
-    AC_SUBST([YAJL_CFLAGS])
-    AC_SUBST([YAJL_LIBS])
-    AC_DEFINE([HAVE_YAJL],[1],[Define to 1 if you have yajl.])
-],[AC_MSG_WARN([yajl not found, some features will be disabled])])
-AM_CONDITIONAL([HAVE_YAJL],[test "x$YAJL_LIBS" != "x"])
-
-dnl Check for C++ (optional, we just use this to test the header works).
-AC_PROG_CXX
-
-dnl The C++ compiler test is pretty useless because even if it fails
-dnl it sets CXX=g++.  So test the compiler actually works.
-AC_MSG_CHECKING([if the C++ compiler really really works])
-AS_IF([$CXX --version >&AS_MESSAGE_LOG_FD 2>&1],[have_cxx=yes],[have_cxx=no])
-AC_MSG_RESULT([$have_cxx])
-AM_CONDITIONAL([HAVE_CXX], [test "$have_cxx" = "yes"])
-
 dnl Check for language bindings.
 m4_include([m4/guestfs_ocaml.m4])
 m4_include([m4/guestfs_perl.m4])
@@ -677,14 +418,6 @@ m4_include([m4/guestfs_gobject.m4])
 dnl Bash completion.
 m4_include([m4/guestfs_bash_completion.m4])
 
-dnl For search paths.
-AC_DEFINE_UNQUOTED([PATH_SEPARATOR],["$PATH_SEPARATOR"],
-                   [Character that separates path elements in search paths])
-
-dnl Library versioning.
-MAX_PROC_NR=`cat $srcdir/src/MAX_PROC_NR`
-AC_SUBST(MAX_PROC_NR)
-
 dnl Replace libtool with a wrapper that clobbers dependency_libs in *.la files
 dnl http://lists.fedoraproject.org/pipermail/devel/2010-November/146343.html
 LIBTOOL='bash $(top_srcdir)/libtool-kill-dependency_libs.sh $(top_builddir)/libtool'
diff --git a/m4/guestfs_libraries.m4 b/m4/guestfs_libraries.m4
new file mode 100644
index 0000000..21c89a4
--- /dev/null
+++ b/m4/guestfs_libraries.m4
@@ -0,0 +1,288 @@
+# libguestfs
+# Copyright (C) 2009-2015 Red Hat Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+dnl Any C libraries required by the libguestfs C library (not the daemon).
+
+dnl Check if dirent (readdir) supports d_type member.
+AC_STRUCT_DIRENT_D_TYPE
+
+dnl Check if stat has the required fields.
+AC_STRUCT_ST_BLOCKS
+AC_CHECK_MEMBER([struct stat.st_blksize],[
+    AC_DEFINE([HAVE_STRUCT_STAT_ST_BLKSIZE],[1],[Define to 1 if 'st_blksize' is a member of 'struct stat'.])])
+AC_CHECK_MEMBER([struct stat.st_atim.tv_nsec],[
+    AC_DEFINE([HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC],[1],[Define to 1 if 'st_mtim.tv_nsec' is a member of 'struct stat'.])])
+AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec],[
+    AC_DEFINE([HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC],[1],[Define to 1 if 'st_mtim.tv_nsec' is a member of 'struct stat'.])])
+AC_CHECK_MEMBER([struct stat.st_ctim.tv_nsec],[
+    AC_DEFINE([HAVE_STRUCT_STAT_ST_CTIM_TV_NSEC],[1],[Define to 1 if 'st_mtim.tv_nsec' is a member of 'struct stat'.])])
+
+dnl Define a C symbol for the host CPU architecture.
+AC_DEFINE_UNQUOTED([host_cpu],["$host_cpu"],[Host architecture.])
+
+dnl Check if libc has program_invocation_short_name.
+AC_CHECK_DECLS([program_invocation_short_name], [], [], [#include <errno.h>])
+
+dnl Headers.
+AC_CHECK_HEADERS([\
+    attr/xattr.h \
+    byteswap.h \
+    endian.h \
+    sys/endian.h \
+    errno.h \
+    linux/fs.h \
+    linux/raid/md_u.h \
+    printf.h \
+    sys/inotify.h \
+    sys/resource.h \
+    sys/socket.h \
+    sys/statvfs.h \
+    sys/time.h \
+    sys/types.h \
+    sys/un.h \
+    sys/wait.h \
+    windows.h \
+    sys/xattr.h])
+
+dnl Functions.
+AC_CHECK_FUNCS([\
+    be32toh \
+    fsync \
+    futimens \
+    getprogname \
+    getxattr \
+    htonl \
+    htons \
+    inotify_init1 \
+    lgetxattr \
+    listxattr \
+    llistxattr \
+    lsetxattr \
+    lremovexattr \
+    mknod \
+    ntohl \
+    ntohs \
+    posix_fallocate \
+    posix_fadvise \
+    removexattr \
+    setitimer \
+    setrlimit \
+    setxattr \
+    sigaction \
+    statvfs \
+    sync])
+
+dnl Check for UNIX_PATH_MAX, creating a custom one if not available.
+AC_MSG_CHECKING([for UNIX_PATH_MAX])
+AC_COMPILE_IFELSE([
+  AC_LANG_PROGRAM([[
+#include <sys/un.h>
+  ]], [[
+#ifndef UNIX_PATH_MAX
+#error UNIX_PATH_MAX not defined
+#endif
+  ]])], [
+    AC_MSG_RESULT([yes])
+  ], [
+    AC_MSG_RESULT([no])
+    AC_MSG_CHECKING([for size of sockaddr_un.sun_path])
+    AC_COMPUTE_INT(unix_path_max, [sizeof (myaddr.sun_path)], [
+#include <sys/un.h>
+struct sockaddr_un myaddr;
+      ], [
+        AC_MSG_ERROR([cannot get it])
+      ])
+    AC_MSG_RESULT([$unix_path_max])
+    AC_DEFINE_UNQUOTED([UNIX_PATH_MAX], $unix_path_max, [Custom value for UNIX_PATH_MAX])
+  ])
+
+dnl tgetent, tputs and UP [sic] are all required.  They come from the lower
+dnl tinfo library, but might be part of ncurses directly.
+PKG_CHECK_MODULES([LIBTINFO], [tinfo], [], [
+    PKG_CHECK_MODULES([LIBTINFO], [ncurses])
+])
+AC_SUBST([LIBTINFO_CFLAGS])
+AC_SUBST([LIBTINFO_LIBS])
+
+dnl GNU gettext tools (optional).
+AC_CHECK_PROG([XGETTEXT],[xgettext],[xgettext],[no])
+AC_CHECK_PROG([MSGCAT],[msgcat],[msgcat],[no])
+AC_CHECK_PROG([MSGFMT],[msgfmt],[msgfmt],[no])
+AC_CHECK_PROG([MSGMERGE],[msgmerge],[msgmerge],[no])
+
+dnl Check they are the GNU gettext tools.
+AC_MSG_CHECKING([msgfmt is GNU tool])
+if $MSGFMT --version >/dev/null 2>&1 && $MSGFMT --version | grep -q 'GNU gettext'; then
+    msgfmt_is_gnu=yes
+else
+    msgfmt_is_gnu=no
+fi
+AC_MSG_RESULT([$msgfmt_is_gnu])
+AM_CONDITIONAL([HAVE_GNU_GETTEXT],
+    [test "x$XGETTEXT" != "xno" && test "x$MSGCAT" != "xno" && test "x$MSGFMT" != "xno" && test "x$MSGMERGE" != "xno" && test "x$msgfmt_is_gnu" != "xno"])
+
+dnl Check for gettext.
+AM_GNU_GETTEXT([external])
+
+dnl Default backend.
+AC_MSG_CHECKING([if the user specified a default backend])
+AC_ARG_WITH([default-backend],
+    [AS_HELP_STRING([--with-default-backend="direct|libvirt|..."],
+        [set default backend @<:@default=direct@:>@])],
+    [DEFAULT_BACKEND="$withval"],
+    [DEFAULT_BACKEND=direct])
+AC_MSG_RESULT([$DEFAULT_BACKEND])
+AC_DEFINE_UNQUOTED([DEFAULT_BACKEND],["$DEFAULT_BACKEND"],
+                   [Default backend.])
+
+dnl Fail with error if user does --with-default-attach-method.
+AC_ARG_WITH([default-attach-method],
+    [AS_HELP_STRING([--with-default-attach-method="..."],
+        [use --with-default-backend instead])],
+    [AC_MSG_FAILURE([--with-default-attach-method no longer works in
+this version of libguestfs, use
+  ./configure --with-default-backend=$withval
+instead.])])
+
+dnl Check for libdl/dlopen (optional - only used to test if the library
+dnl can be used with libdl).
+AC_CHECK_LIB([dl],[dlopen],[have_libdl=yes],[have_libdl=no])
+AC_CHECK_HEADERS([dlfcn.h],[have_dlfcn=yes],[have_dlfcn=no])
+AM_CONDITIONAL([HAVE_LIBDL],
+               [test "x$have_libdl" = "xyes" && test "x$have_dlfcn" = "xyes"])
+
+dnl Check for rpcgen and XDR library.  rpcgen is optional.
+AC_CHECK_PROG([RPCGEN],[rpcgen],[rpcgen],[no])
+AM_CONDITIONAL([HAVE_RPCGEN],[test "x$RPCGEN" != "xno"])
+AC_CHECK_LIB([portablexdr],[xdrmem_create],[],[
+    AC_SEARCH_LIBS([xdrmem_create],[rpc xdr nsl])
+])
+AC_SEARCH_LIBS([xdr_u_int64_t],[portablexdr rpc xdr nsl],[
+    AC_DEFINE([HAVE_XDR_U_INT64_T],[1],[Define to 1 if xdr_u_int64_t() exists.])
+])
+AC_SEARCH_LIBS([xdr_uint64_t],[portablexdr rpc xdr nsl],[
+    AC_DEFINE([HAVE_XDR_UINT64_T],[1],[Define to 1 if xdr_uint64_t() exists.])
+])
+AM_CONDITIONAL([HAVE_XDR_U_INT64_T],
+               [test "x$ac_cv_search_xdr_u_int64_t" != "xno"])
+AM_CONDITIONAL([HAVE_XDR_UINT64_T],
+               [test "x$ac_cv_search_xdr_uint64_t" != "xno"])
+
+dnl Check for libselinux (optional).
+AC_CHECK_HEADERS([selinux/selinux.h])
+AC_CHECK_LIB([selinux],[setexeccon],[
+    have_libselinux="$ac_cv_header_selinux_selinux_h"
+    SELINUX_LIBS="-lselinux"
+
+    old_LIBS="$LIBS"
+    LIBS="$LIBS $SELINUX_LIBS"
+    AC_CHECK_FUNCS([setcon getcon])
+    LIBS="$old_LIBS"
+],[have_libselinux=no])
+if test "x$have_libselinux" = "xyes"; then
+    AC_DEFINE([HAVE_LIBSELINUX],[1],[Define to 1 if you have libselinux.])
+fi
+AC_SUBST([SELINUX_LIBS])
+
+dnl Check for systemtap/DTrace userspace probes (optional).
+dnl Since the probe points break under clang, allow this to be disabled.
+AC_ARG_ENABLE([probes],
+    AS_HELP_STRING([--disable-probes], [disable systemtap/DTrace userspace probes]),
+    [],
+    [enable_probes=yes])
+AS_IF([test "x$enable_probes" != "xno"],[
+    dnl http://sourceware.org/systemtap/wiki/AddingUserSpaceProbingToApps
+    AC_CHECK_HEADERS([sys/sdt.h])
+    dnl AC_CHECK_PROG([DTRACE],[dtrace],[dtrace],[no])
+    AS_IF([test "x$ac_cv_header_sys_sdt_h" = "xyes"],[
+        AC_DEFINE([ENABLE_PROBES],[1],[Enable systemtap/DTrace userspace probes.])
+    ])
+])
+
+dnl Enable packet dumps when in verbose mode.  This generates lots
+dnl of debug info, only useful for people debugging the RPC mechanism.
+AC_ARG_ENABLE([packet-dump],[
+    AS_HELP_STRING([--enable-packet-dump],
+        [enable packet dumps in verbose mode @<:@default=no@:>@])],
+    [AC_DEFINE([ENABLE_PACKET_DUMP],[1],[Enable packet dumps in verbose mode.])],
+    [])
+
+dnl Check for PCRE (required)
+PKG_CHECK_MODULES([PCRE], [libpcre])
+
+dnl Check for Augeas >= 1.0.0 (required).
+PKG_CHECK_MODULES([AUGEAS],[augeas >= 1.0.0])
+
+dnl libmagic (highly recommended)
+AC_CHECK_LIB([magic],[magic_file],[
+    AC_CHECK_HEADER([magic.h],[
+        AC_SUBST([MAGIC_LIBS], ["-lmagic"])
+        AC_DEFINE([HAVE_LIBMAGIC],[1],[libmagic found at compile time.])
+    ], [])
+],[AC_MSG_WARN([libmagic not found, some core features will be disabled])])
+
+dnl libvirt (highly recommended)
+AC_ARG_WITH([libvirt],[
+    AS_HELP_STRING([--without-libvirt],
+                   [disable libvirt support @<:@default=check@:>@])],
+    [],
+    [with_libvirt=check])
+AS_IF([test "$with_libvirt" != "no"],[
+    PKG_CHECK_MODULES([LIBVIRT], [libvirt],[
+        AC_SUBST([LIBVIRT_CFLAGS])
+        AC_SUBST([LIBVIRT_LIBS])
+        AC_DEFINE([HAVE_LIBVIRT],[1],[libvirt found at compile time.])
+    ],
+    [AC_MSG_WARN([libvirt not found, some core features will be disabled])])
+])
+AM_CONDITIONAL([HAVE_LIBVIRT],[test "x$LIBVIRT_LIBS" != "x"])
+
+libvirt_ro_uri='qemu+unix:///system?socket=/var/run/libvirt/libvirt-sock-ro'
+AC_SUBST([libvirt_ro_uri])
+
+dnl libxml2 (required)
+PKG_CHECK_MODULES([LIBXML2], [libxml-2.0])
+old_LIBS="$LIBS"
+LIBS="$LIBS $LIBXML2_LIBS"
+AC_CHECK_FUNCS([xmlBufferDetach])
+LIBS="$old_LIBS"
+
+dnl Check for yajl JSON library (optional).
+PKG_CHECK_MODULES([YAJL], [yajl >= 2.0.4], [
+    AC_SUBST([YAJL_CFLAGS])
+    AC_SUBST([YAJL_LIBS])
+    AC_DEFINE([HAVE_YAJL],[1],[Define to 1 if you have yajl.])
+],[AC_MSG_WARN([yajl not found, some features will be disabled])])
+AM_CONDITIONAL([HAVE_YAJL],[test "x$YAJL_LIBS" != "x"])
+
+dnl Check for C++ (optional, we just use this to test the header works).
+AC_PROG_CXX
+
+dnl The C++ compiler test is pretty useless because even if it fails
+dnl it sets CXX=g++.  So test the compiler actually works.
+AC_MSG_CHECKING([if the C++ compiler really really works])
+AS_IF([$CXX --version >&AS_MESSAGE_LOG_FD 2>&1],[have_cxx=yes],[have_cxx=no])
+AC_MSG_RESULT([$have_cxx])
+AM_CONDITIONAL([HAVE_CXX], [test "$have_cxx" = "yes"])
+
+dnl For search paths.
+AC_DEFINE_UNQUOTED([PATH_SEPARATOR],["$PATH_SEPARATOR"],
+                   [Character that separates path elements in search paths])
+
+dnl Library versioning.
+MAX_PROC_NR=`cat $srcdir/src/MAX_PROC_NR`
+AC_SUBST(MAX_PROC_NR)
-- 
2.5.0


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