r196: Allow compiling against Linux 2.6.18 nbd.h

[nbd.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 68ef533..d300bd8 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,10 +1,22 @@
 dnl Configure script for NBD system
 dnl (c) 1998 Martin Mares <mj@ucw.cz>, (c) 2000 Pavel Machek <pavel@ucw.cz>,
-dnl (c) 2003-2004 Wouter Verhelst
-AC_INIT([nbd],[2.7],[wouter@debian.org])
-AM_INIT_AUTOMAKE(nbd, 2.7)
+dnl (c) 2003-2004 Wouter Verhelst <wouter@debian.org>
+AC_INIT([nbd],[SVN],[wouter@debian.org])
+AM_INIT_AUTOMAKE(foreign dist-bzip2)
+AM_MAINTAINER_MODE
 
-AC_ARG_ENABLE(lfs, AC_HELP_STRING([--enable-lfs],[Enable Large File Support]), [NBD_LFS=1], [NBD_LFS=0])
+AC_ARG_ENABLE(
+  lfs,
+  AC_HELP_STRING(--disable-lfs,Disable Large File Support (default on)),
+  [
+    if test "x$enableval" = "xyes" ; then
+      NBD_LFS=1
+    else
+      NBD_LFS=0
+    fi
+  ],
+  [NBD_LFS=1]
+)
 AC_MSG_CHECKING([whether Large File Support should be enabled])
 if test $NBD_LFS -eq 1; then
   AC_DEFINE(NBD_LFS,1, [Define to 1 if Large File Support should be enabled])
@@ -14,7 +26,18 @@ else
   AC_MSG_RESULT([no])
 fi
 
-AC_ARG_ENABLE(syslog, AC_HELP_STRING([--enable-syslog],[Enable Syslog logging]), [ISSERVER=1], [ISSERVER=0])
+AC_ARG_ENABLE(
+  syslog,
+  AC_HELP_STRING(--enable-syslog,Enable Syslog logging),
+  [
+    if test "x$enableval" = "xyes" ; then
+      ISSERVER=1
+    else
+      ISSERVER=0
+    fi
+  ],
+  [ISSERVER=0]
+)
 AC_MSG_CHECKING([whether syslog logging is requested])
 if test $ISSERVER -eq 1; then
   AC_DEFINE(ISSERVER,1, [Define to 1 if you want nbd-server to log through syslog])
@@ -22,15 +45,10 @@ if test $ISSERVER -eq 1; then
 else
   AC_MSG_RESULT([no])
 fi
+
 AC_PROG_CC
-AC_MSG_CHECKING(whether warnings should be enabled)
-if test -n "$GCC" ; then
-  AC_MSG_RESULT(yes)
-  #CFLAGS="$CFLAGS -Wall -W -Wno-parentheses -Wstrict-prototypes -Wno-unused"
-else
-  AC_MSG_RESULT(no)
-fi
-#AC_PROG_INSTALL
+AC_PROG_CPP
+AC_PROG_INSTALL
 AC_C_BIGENDIAN
 AC_C_INLINE
 AC_C_CONST
@@ -48,23 +66,48 @@ case "`uname`" in
               ;;
      *) AC_MSG_RESULT(no) ;;
 esac
-AC_MSG_CHECKING(whether there is a local nbd.h)
-if test -f nbd.h; then
-  AC_DEFINE(HAVE_LOCAL_NBD_H,1, [Define to 1 if you want to use a local nbd.h (not provided, must be supplied by you)])
-  AC_MSG_RESULT(yes)
-else
-  AC_MSG_RESULT(no)
+AC_MSG_CHECKING(where to find a working nbd.h)
+AC_TRY_COMPILE([#define u32 int
+#define u64 int
+#define __be32 int
+#define __be64 int
+#include "nbd.h"
+],
+[int foo=NBD_CMD_DISC], 
+  [AC_DEFINE(NBD_H_LOCAL, 1, Set to 1 if a (2.6) nbd.h can be found in the current directory)
+    NBD_H='"nbd.h"'],
+  AC_TRY_COMPILE([#define u32 int
+#define u64 int
+#define __be32 int
+#define __be64 int
+#include <linux/nbd.h>
+  ],
+[int foo=NBD_CMD_DISC],
+    [AC_DEFINE(NBD_H_LINUX, 1, Set to 1 if a (2.6) nbd.h can be found in the linux directory in the search path)
+      NBD_H='<linux/nbd.h>'],
+    AC_MSG_ERROR(Could not find an nbd.h from 2.6 or above.)
+  )
+)
+if test -f nbd.h
+then
+  if test $NBD_H='<linux/nbd.h>'
+  then
+    AC_MSG_WARN([there is a local nbd.h, but it is from the 2.4-series of kernels. Using the system-provided, working, nbd.h])
+  fi
 fi
-AC_CHECK_HEADERS([linux/nbd.h],,,
-[[#define u32 unsigned int
-#define u64 unsigned long int
+AC_MSG_RESULT($NBD_H)
+AC_CHECK_HEADERS([sys/mount.h],,,
+[[#include <sys/param.h>
 ]])
-AC_CHECK_HEADERS([arpa/inet.h fcntl.h netdb.h netinet/in.h sys/ioctl.h sys/mount.h sys/socket.h syslog.h])
+AC_CHECK_HEADERS([arpa/inet.h fcntl.h netdb.h netinet/in.h sys/ioctl.h sys/socket.h syslog.h])
+AM_PATH_GLIB_2_0(2.6.0, [HAVE_GLIB=yes], AC_MSG_ERROR([Missing glib]))
 AC_HEADER_SYS_WAIT
 AC_TYPE_OFF_T
 AC_TYPE_PID_T
 AC_SUBST(sbin_PROGRAMS)
-AM_CONFIG_HEADER(config.h)
-AC_CONFIG_FILES([Makefile])
+nbd_server_CPPFLAGS=$nbd_server_CPPFLAGS" -DSYSCONFDIR='\"$sysconfdir\"'"
+AC_SUBST(nbd_server_CPPFLAGS)
+AC_CONFIG_HEADERS([config.h])
+AC_CONFIG_FILES([Makefile Doxyfile])
 AC_OUTPUT