Add 64-bit byte swapping functions

[thirdparty/e2fsprogs.git] / configure.in

AC_INIT(version.h)
AC_PREREQ(2.50)
AC_CONFIG_AUX_DIR(config)
MCONFIG=./MCONFIG
AC_SUBST_FILE(MCONFIG)
BINARY_TYPE=bin
dnl
dnl This is to figure out the version number and the date....
dnl
E2FSPROGS_VERSION=`grep E2FSPROGS_VERSION ${srcdir}/version.h  \
	| awk '{print $3}' | tr \" " " | awk '{print $1}'`
DATE=`grep E2FSPROGS_DATE ${srcdir}/version.h | awk '{print $3}' \
	| tr \" " "`
E2FSPROGS_DAY=`echo $DATE | awk -F- '{print $1}'`
MONTH=`echo $DATE | awk -F- '{print $2}'`
YEAR=`echo $DATE | awk -F- '{print $3}'`

if expr $YEAR ">" 1900 > /dev/null ; then
	E2FSPROGS_YEAR=$YEAR
elif expr $YEAR ">" 90 >/dev/null ; then
	E2FSPROGS_YEAR=19$YEAR
else
	E2FSPROGS_YEAR=20$YEAR
fi

case $MONTH in
Jan)	E2FSPROGS_MONTH="January" ;;
Feb)	E2FSPROGS_MONTH="February" ;;
Mar)	E2FSPROGS_MONTH="March" ;;
Apr)	E2FSPROGS_MONTH="April" ;;
May)	E2FSPROGS_MONTH="May" ;;
Jun)	E2FSPROGS_MONTH="June" ;;
Jul)	E2FSPROGS_MONTH="July" ;;
Aug)	E2FSPROGS_MONTH="August" ;;
Sep)	E2FSPROGS_MONTH="September" ;;
Oct)	E2FSPROGS_MONTH="October" ;;
Nov)	E2FSPROGS_MONTH="November" ;;
Dec)	E2FSPROGS_MONTH="December" ;;
*)	echo "Unknown month $MONTH??" ;;
esac

unset DATE MONTH YEAR
echo "Generating configuration file for e2fsprogs version $E2FSPROGS_VERSION"
echo "Release date is ${E2FSPROGS_MONTH}, ${E2FSPROGS_YEAR}"
AC_SUBST(E2FSPROGS_YEAR)
AC_SUBST(E2FSPROGS_MONTH)
AC_SUBST(E2FSPROGS_DAY)
AC_SUBST(E2FSPROGS_VERSION)
AC_CANONICAL_HOST
dnl
dnl Use diet libc
dnl 
AC_ARG_WITH([diet-libc],
[  --with-diet-libc      Use diet libc],
CC="diet cc -nostdinc"
AC_MSG_RESULT(CC=$CC))dnl
dnl
dnl set $(CC) from --with-cc=value
dnl
AC_ARG_WITH([cc],
[  --with-cc=COMPILER      select compiler to use],
AC_MSG_RESULT(CC=$withval)
CC=$withval,
if test -z "$CC" ; then CC=cc; fi
[AC_MSG_RESULT(CC defaults to $CC)])dnl
export CC
AC_SUBST([CC])
AC_PROG_CC
dnl
dnl set $(LD) from --with-linker=value
dnl
AC_ARG_WITH([linker],
[  --with-linker=LINKER    select linker to use],
AC_MSG_RESULT(LD=$withval)
LD=$withval,
if test -z "$LD" ; then LD=$CC; fi
[AC_MSG_RESULT(LD defaults to $LD)])dnl
export LD
AC_SUBST([LD])
dnl
dnl set $(CCOPTS) from --with-ccopts=value
dnl
AC_ARG_WITH([ccopts],
[  --with-ccopts=CCOPTS    select compiler command line options],
AC_MSG_RESULT(CCOPTS is $withval)
CFLAGS=$withval,
)dnl
dnl
dnl On systems without linux header files, we add an extra include directory
dnl that holds enough to fake it (hopefully).  Note that the $(top_srcdir) here
dnl is quoted so that it gets expanded by make, not by configure.
dnl
AC_CHECK_HEADER(linux/fs.h, [linux_headers=yes], [linux_headers=no])
if test "$linux_headers" != yes; then
  LINUX_INCLUDE='-I$(top_builddir)/include'
fi
AC_SUBST(LINUX_INCLUDE)
dnl
dnl Alpha computers use fast and imprecise floating point code that may
dnl miss exceptions by default. Force sane options if we're using GCC.
AC_MSG_CHECKING(for additional special compiler flags)
if test "$GCC" = yes
then
    case "$host_cpu" in
	alpha)		addcflags="-mieee" ;;
    esac
fi
if test "x$addcflags" != x
then
    AC_MSG_RESULT($addcflags)
    CFLAGS="$addcflags $CFLAGS"
else
    AC_MSG_RESULT([[(none)]])
fi
dnl
dnl Set default values for library extentions.  Will be dealt with after
dnl parsing configuration opions, which may modify these
dnl
LIB_EXT=.a
STATIC_LIB_EXT=.a
PROFILE_LIB_EXT=.a
dnl
dnl set $(LDFLAGS) from --with-ldopts=value
dnl
AC_ARG_WITH([ldopts],
[  --with-ldopts=LDOPTS    select linker command line options],
AC_MSG_RESULT(LDFLAGS is $withval)
LDFLAGS=$withval,
LDFLAGS=)dnl
AC_SUBST(LDFLAGS)
dnl
dnl Allow separate `root_prefix' to be specified
dnl
AC_ARG_WITH([root-prefix],
[  --with-root-prefix=PREFIX override prefix variable for files to be placed in the root],
root_prefix=$withval,
root_prefix=NONE)dnl
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dnl handle --enable-maintainer-mode
dnl
AC_ARG_ENABLE([maintainer-mode],
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if test "$enableval" = "no"
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else
	MAINTAINER_CMT=
	echo "Enabling maintainer mode"
fi
,
MAINTAINER_CMT=#
echo "Disabling maintainer mode by default"
)
AC_SUBST(MAINTAINER_CMT)
dnl
dnl handle --enable-compression
dnl
AC_ARG_ENABLE([compression],
[  --enable-compression	  enable EXPERIMENTAL compression support],
if test "$enableval" = "no"
then
	echo "Disabling compression support"
else
	AC_DEFINE(ENABLE_COMPRESSION)
	echo "Enabling compression support"
	echo "WARNING: Compression support is experimental"
fi
,
echo "Disabling compression support by default"
)
dnl
dnl handle --enable-htree
dnl
AC_ARG_ENABLE([htree],
[  --enable-htree      	  enable EXPERIMENTAL htree directory support],
if test "$enableval" = "no"
then
	HTREE_CMT=#
	echo "Disabling htree directory support"
else
	HTREE_CMT=
	AC_DEFINE(ENABLE_HTREE)
	echo "Enabling htree directory support"
fi
,
HTREE_CMT=
AC_DEFINE(ENABLE_HTREE)
echo "Enabling htree directory support by default"
)
AC_SUBST(HTREE_CMT)
dnl
dnl handle --enable-elf-shlibs
dnl
AC_ARG_ENABLE([elf-shlibs],
[  --enable-elf-shlibs	  select ELF shared libraries],
if test "$enableval" = "no"
then
	ELF_CMT=#
	MAKEFILE_ELF=/dev/null
	echo "Disabling ELF shared libraries"
else
	ELF_CMT=
	MAKEFILE_ELF=$srcdir/lib/Makefile.elf-lib
	[case "$host_os" in
	solaris2.*)
		MAKEFILE_ELF=$srcdir/lib/Makefile.solaris-lib
	;;
	esac]
	BINARY_TYPE=elfbin
	LIB_EXT=.so
	echo "Enabling ELF shared libraries"
fi
,
MAKEFILE_ELF=/dev/null
ELF_CMT=#
echo "Disabling ELF shared libraries by default"
)
AC_SUBST(ELF_CMT)
AC_SUBST_FILE(MAKEFILE_ELF)
dnl
dnl handle --enable-bsd-shlibs
dnl
AC_ARG_ENABLE([bsd-shlibs],
[  --enable-bsd-shlibs	  select BSD shared libraries],
if test "$enableval" = "no"
then
	BSDLIB_CMT=#
	MAKEFILE_BSDLIB=/dev/null
	echo "Disabling BSD shared libraries"
else
	BSDLIB_CMT=
	MAKEFILE_BSDLIB=$srcdir/lib/Makefile.bsd-lib
	LIB_EXT=.so
	[case "$host_os" in
	darwin*)
		MAKEFILE_BSDLIB=$srcdir/lib/Makefile.darwin-lib
		LIB_EXT=.dylib
	;;
	esac]
	echo "Enabling BSD shared libraries"
fi
,
MAKEFILE_BSDLIB=/dev/null
BSDLIB_CMT=#
echo "Disabling BSD shared libraries by default"
)
AC_SUBST(BSDLIB_CMT)
AC_SUBST_FILE(MAKEFILE_BSDLIB)
dnl
dnl handle --enable-profile
dnl
AC_ARG_ENABLE([profile],
[  --enable-profile	  build profiling libraries],
if test "$enableval" = "no"
then
	PROFILE_CMT=#
	MAKEFILE_PROFILE=/dev/null
	echo "Disabling profiling libraries"
else
	PROFILE_CMT=
	MAKEFILE_PROFILE=$srcdir/lib/Makefile.profile
	PROFILED_LIB_EXT=_p.a
	echo "Building profiling libraries"
fi
,
PROFILE_CMT=#
MAKEFILE_PROFILE=/dev/null
echo "Disabling profiling libraries by default"
)
AC_SUBST(PROFILE_CMT)
AC_SUBST_FILE(MAKEFILE_PROFILE)
dnl
dnl handle --enable-checker
dnl
AC_ARG_ENABLE([checker],
[  --enable-checker	  build checker libraries],
if test "$enableval" = "no"
then
	CHECKER_CMT=#
	MAKEFILE_CHECKER=/dev/null
	echo "Disabling checker libraries"
else
	CHECKER_CMT=
	MAKEFILE_CHECKER=$srcdir/lib/Makefile.checker
	echo "Building checker libraries"
fi
,
CHECKER_CMT=#
MAKEFILE_CHECKER=/dev/null
echo "Disabling checker libraries by default"
)
AC_SUBST(CHECKER_CMT)
AC_SUBST_FILE(MAKEFILE_CHECKER)
dnl
dnl Substitute library extensions
dnl
AC_SUBST(LIB_EXT)
AC_SUBST(STATIC_LIB_EXT)
AC_SUBST(PROFILED_LIB_EXT)
dnl
dnl handle --enable-jbd-debug
dnl
AC_ARG_ENABLE([jbd-debug],
[  --enable-jbd-debug  	  enable journal debugging],
if test "$enableval" = "no"
then
	echo "Disabling journal debugging"
else
	AC_DEFINE(CONFIG_JBD_DEBUG)
	echo "Enabling journal debugging"
fi
,
echo "Disabling journal debugging by default"
)
dnl
dnl handle --enable-blkid-debug
dnl
AC_ARG_ENABLE([blkid-debug],
[  --enable-blkid-debug    enable blkid debugging],
if test "$enableval" = "no"
then
	echo "Disabling blkid debugging"
else
	AC_DEFINE(CONFIG_BLKID_DEBUG)
	echo "Enabling blkid debugging"
fi
,
echo "Disabling blkid debugging by default"
)
dnl
dnl handle --enable-testio-debug
dnl
AC_ARG_ENABLE([testio-debug],
[  --enable-testio-debug   enable the use of the test I/O manager for debugging],
if test "$enableval" = "no"
then
	echo "Disabling testio debugging"
else
	AC_DEFINE(CONFIG_TESTIO_DEBUG)
	echo "Enabling testio debugging"
fi
,
echo "Disabling testio debugging by default"
)
dnl
dnl handle --enable-swapfs
dnl
AC_ARG_ENABLE([swapfs],
[  --disable-swapfs    	  disable support of legacy byte-swapped filesystems],
if test "$enableval" = "no"
then
	SWAPFS_CMT=#
	echo "Disabling swapfs support"
else
	SWAPFS_CMT=
	AC_DEFINE(ENABLE_SWAPFS)
	echo "Enabling swapfs support"
fi
,
SWAPFS_CMT=
echo "Enabling swapfs support by default"
AC_DEFINE(ENABLE_SWAPFS)
)
AC_SUBST(SWAPFS_CMT)
dnl
dnl handle --enable-debugfs
dnl
AC_ARG_ENABLE([debugfs],
[  --disable-debugfs   	  disable support of debugfs program],
if test "$enableval" = "no"
then
	echo "Disabling debugfs support"
	DEBUGFS_CMT="#"
else
	DEBUGFS_CMT=
	echo "Enabling debugfs support"
fi
,
echo "Enabling debugfs support by default"
DEBUGFS_CMT=
)
AC_SUBST(DEBUGFS_CMT)
dnl
dnl handle --enable-imager
dnl
AC_ARG_ENABLE([imager],
[  --disable-imager   	  disable support of e2image program],
if test "$enableval" = "no"
then
	echo "Disabling e2image support"
	IMAGER_CMT="#"
else
	IMAGER_CMT=
	echo "Enabling e2image support"
fi
,
echo "Enabling e2image support by default"
IMAGER_CMT=
)
AC_SUBST(IMAGER_CMT)
dnl
dnl handle --enable-resizer
dnl
AC_ARG_ENABLE([resizer],
[  --disable-resizer   	  disable support of e2resize program],
if test "$enableval" = "no"
then
	echo "Disabling e2resize support"
	RESIZER_CMT="#"
else
	RESIZER_CMT=
	echo "Enabling e2resize support"
fi
,
echo "Enabling e2resize support by default"
RESIZER_CMT=
)
AC_SUBST(RESIZER_CMT)
dnl
dnl handle --enable-dynamic-e2fsck
dnl
AC_ARG_ENABLE([dynamic-e2fsck],
[  --enable-dynamic-e2fsck build e2fsck dynamically],
if test "$enableval" = "no"
then
	E2FSCK_TYPE=static
	echo "Building e2fsck statically"
else
	E2FSCK_TYPE=shared
	echo "Building e2fsck dynamically"
fi
,
E2FSCK_TYPE=static
echo "Building e2fsck statically by default"
)
AC_SUBST(E2FSCK_TYPE)
dnl
dnl See whether to install the `fsck' wrapper program (that calls e2fsck)
dnl
AC_ARG_ENABLE([fsck],
[  --enable-fsck           build fsck wrapper program],
[if test "$enableval" = "no"
then
	FSCK_PROG='' FSCK_MAN=''
	echo "Not building fsck wrapper"
else
	FSCK_PROG=fsck FSCK_MAN=fsck.8
	echo "Building fsck wrapper"
fi]
,
[case "$host_os" in
  gnu*)
    FSCK_PROG='' FSCK_MAN=''
    echo "Not building fsck wrapper by default"
    ;;
  *)
    FSCK_PROG=fsck FSCK_MAN=fsck.8
    echo "Building fsck wrapper by default"
esac]
)
AC_SUBST(FSCK_PROG)
AC_SUBST(FSCK_MAN)
dnl
dnl See whether to install the `e2initrd-helper' program
dnl
AC_ARG_ENABLE([e2initrd-helper],
[  --enable-e2initrd-helper build e2initrd-helper program],
[if test "$enableval" = "no"
then
	E2INITRD_PROG='' E2INITRD_MAN=''
	echo "Not building e2initrd helper"
else
	E2INITRD_PROG=e2initrd_helper E2INITRD_MAN=e2initrd_helper.8
	echo "Building e2initrd helper"
fi]
,
E2INITRD_PROG=e2initrd_helper E2INITRD_MAN=e2initrd_helper.8
echo "Building e2initrd helper by default"
)
AC_SUBST(E2INITRD_PROG)
AC_SUBST(E2INITRD_MAN)
dnl handle --enable-blkid-devmapper
dnl
AC_ARG_ENABLE([blkid-devmapper],
[  --enable-blkid-devmapper  build with device-mapper support],
[if test "$enableval" = "no"
then
	echo "Disabling device-mapper support"
	DEVMAPPER_REQ=''
	DEVMAPPER_LIBS=''
	STATIC_DEVMAPPER_LIBS=''
else
	AC_DEFINE(HAVE_DEVMAPPER)
	echo "Enabling device-mapper support"

	DEVMAPPER_REQ='libselinux libsepol'
	DEVMAPPER_PC_LIBS='-ldevmapper'
	DEVMAPPER_LIBS='-ldevmapper -lselinux -lsepol'
	STATIC_DEVMAPPER_LIBS='/usr/lib/libdevmapper.a /usr/lib/libselinux.a /usr/lib/libsepol.a'

fi]
,
echo "Disabling device-mapper support by default"
)
AC_SUBST(DEVMAPPER_REQ)
AC_SUBST(DEVMAPPER_PC_LIBS)
AC_SUBST(DEVMAPPER_LIBS)
AC_SUBST(STATIC_DEVMAPPER_LIBS)
dnl
dnl
dnl
MAKEFILE_LIBRARY=$srcdir/lib/Makefile.library
AC_SUBST_FILE(MAKEFILE_LIBRARY)
dnl
dnl Add internationalization support, using gettext.
dnl
GETTEXT_PACKAGE=e2fsprogs
PACKAGE=e2fsprogs
VERSION="$E2FSPROGS_VERSION"
VERSION=0.14.1
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")
AC_DEFINE_UNQUOTED(VERSION, "$VERSION")
AC_SUBST(GETTEXT_PACKAGE)
AC_SUBST(PACKAGE)
AC_SUBST(VERSION)

AM_GNU_GETTEXT
dnl
dnl End of configuration options
dnl
AC_SUBST(BINARY_TYPE)
AC_PROG_MAKE_SET
AC_PATH_PROG(LN, ln, ln)
AC_PROG_LN_S
AC_PATH_PROG(MV, mv, mv)
AC_PATH_PROG(CP, cp, cp)
AC_PATH_PROG(RM, rm, rm)
AC_PATH_PROG(CHMOD, chmod, :)
AC_PROG_AWK
AC_PROG_EGREP
AC_PATH_PROG(SED, sed, sed)
AC_PATH_PROG(PERL, perl, perl)
AC_PATH_PROG(LDCONFIG, ldconfig, :)
AC_CHECK_TOOL(AR, ar, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_CHECK_TOOL(STRIP, strip, :)
AC_PROG_INSTALL
# See if we need a separate native compiler.
if test $cross_compiling = no; then
  BUILD_CC="$CC"
  AC_SUBST(BUILD_CC)
else
  AC_CHECK_PROGS(BUILD_CC, gcc cc)
fi
AC_CHECK_HEADERS(stdlib.h unistd.h stdarg.h stdint.h errno.h malloc.h mntent.h paths.h dirent.h getopt.h setjmp.h signal.h termios.h linux/fd.h linux/major.h sys/disklabel.h sys/ioctl.h sys/mkdev.h sys/prctl.h sys/queue.h sys/sockio.h sys/socket.h sys/sysmacros.h sys/time.h sys/stat.h sys/types.h sys/wait.h sys/resource.h net/if_dl.h netinet/in.h)
AC_CHECK_HEADERS(sys/disk.h sys/mount.h,,,
[[
#if HAVE_SYS_QUEUE_H
#include <sys/queue.h>
#endif
]])
AC_CHECK_HEADERS(net/if.h,,,
[[
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_SYS_SOCKET
#include <sys/socket.h>
#endif
]])
AC_FUNC_VPRINTF
dnl Check to see if dirent has member d_reclen. On cygwin those d_reclen
dnl is not decleared.
AC_CHECK_MEMBER(struct dirent.d_reclen,[AC_DEFINE(HAVE_RECLEN_DIRENT)],,
		[#include <dirent.h>])
dnl Check to see if ssize_t was decleared
AC_CHECK_TYPE(ssize_t,[AC_DEFINE(HAVE_TYPE_SSIZE_T)],,
	      [#include <sys/types.h>])
dnl
dnl Check to see if llseek() is declared in unistd.h.  On some libc's 
dnl it is, and on others it isn't..... Thank you glibc developers....
dnl
AC_CHECK_DECL(llseek,[AC_DEFINE(HAVE_LLSEEK_PROTOTYPE)],,
	      [#include <unistd.h>])
dnl
dnl Check to see if lseek64() is declared in unistd.h.  Glibc's header files
dnl are so convoluted that I can't tell whether it will always be defined,
dnl and if it isn't defined while lseek64 is defined in the library, 
dnl disaster will strike.  
dnl
dnl Warning!  Use of --enable-gcc-wall may throw off this test.
dnl
dnl
AC_CHECK_DECL(lseek64,[AC_DEFINE(HAVE_LSEEK64_PROTOTYPE)],,
		[#define _LARGEFILE_SOURCE
		 #define _LARGEFILE64_SOURCE
		 #include <unistd.h>])
dnl
dnl Word sizes...
dnl
if test "$cross_compiling" = yes -a "$ac_cv_sizeof_long" = ""; then
  # if cross-compiling, with no cached values, just assume something common. 
  ac_cv_sizeof_short=2
  ac_cv_sizeof_int=4
  ac_cv_sizeof_long=4
  ac_cv_sizeof_long_long=8
  AC_MSG_WARN([Cross-compiling, so cannot check type sizes; assuming short=2, int=4, long=4, long long=8])
fi
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
SIZEOF_SHORT=$ac_cv_sizeof_short
SIZEOF_INT=$ac_cv_sizeof_int
SIZEOF_LONG=$ac_cv_sizeof_long
SIZEOF_LONG_LONG=$ac_cv_sizeof_long_long
AC_SUBST(SIZEOF_SHORT)
AC_SUBST(SIZEOF_INT)
AC_SUBST(SIZEOF_LONG)
AC_SUBST(SIZEOF_LONG_LONG)
AC_C_BIGENDIAN
/bin/sh $ac_aux_dir/parse-types.sh
ASM_TYPES_HEADER=./asm_types.h
AC_SUBST_FILE(ASM_TYPES_HEADER)
dnl
dnl See if we have inttypes.h and if intptr_t is defined
dnl
AC_CHECK_HEADERS([inttypes.h])
AC_CHECK_TYPES(intptr_t)
dnl
dnl See if struct stat has a st_flags field, in which case we can get file
dnl flags somewhat portably.  Also check for the analogous setter, chflags().
dnl
AC_MSG_CHECKING(whether struct stat has a st_flags field)
AC_CACHE_VAL(e2fsprogs_cv_struct_st_flags,
	AC_TRY_COMPILE([#include <sys/stat.h>],
		[struct stat stat; stat.st_flags = 0;],
		[e2fsprogs_cv_struct_st_flags=yes],
		[e2fsprogs_cv_struct_st_flags=no]))
AC_MSG_RESULT($e2fsprogs_cv_struct_st_flags)
if test "$e2fsprogs_cv_struct_st_flags" = yes; then
  AC_MSG_CHECKING(whether st_flags field is useful)
  AC_CACHE_VAL(e2fsprogs_cv_struct_st_flags_immut,
	AC_TRY_COMPILE([#include <sys/stat.h>],
		[struct stat stat; stat.st_flags |= UF_IMMUTABLE;],
		[e2fsprogs_cv_struct_st_flags_immut=yes],
		[e2fsprogs_cv_struct_st_flags_immut=no]))
  AC_MSG_RESULT($e2fsprogs_cv_struct_st_flags_immut)
  if test "$e2fsprogs_cv_struct_st_flags_immut" = yes; then
	  AC_DEFINE(HAVE_STAT_FLAGS)
  fi
fi
dnl
dnl Check for the presence of SA_LEN
dnl
AC_CHECK_MEMBER(struct sockaddr.sa_len,
		AC_DEFINE_UNQUOTED(HAVE_SA_LEN,1,[Define if struct sockaddr contains sa_len]),,
	[#include <sys/types.h>
	 #include <sys/socket.h>])
dnl
AC_CHECK_FUNCS(chflags getrusage llseek lseek64 open64 fstat64 getmntinfo strtoull strcasecmp srandom fchown mallinfo fdatasync strnlen strptime sysconf pathconf posix_memalign memalign valloc __secure_getenv prctl)
dnl
dnl Check to see if -lsocket is required (solaris) to make something
dnl that uses socket() to compile; this is needed for the UUID library
dnl
SOCKET_LIB=''
AC_CHECK_LIB(socket, socket, [SOCKET_LIB=-lsocket])
AC_SUBST(SOCKET_LIB)
dnl
dnl Check to see if libdl exists for the sake of dlopen
dnl
DLOPEN_LIB=''
AC_CHECK_LIB(dl, dlopen, 
[DLOPEN_LIB=-ldl
AC_DEFINE(HAVE_DLOPEN)])
AC_SUBST(DLOPEN_LIB)
dnl
dnl See if optreset exists
dnl
AC_MSG_CHECKING(for optreset)
AC_CACHE_VAL(ac_cv_have_optreset,
[AC_EGREP_HEADER(optreset, unistd.h,
  ac_cv_have_optreset=yes, ac_cv_have_optreset=no)])dnl
AC_MSG_RESULT($ac_cv_have_optreset)
if test $ac_cv_have_optreset = yes; then
  AC_DEFINE(HAVE_OPTRESET)
fi
dnl
dnl We use the EXT2 ioctls only under Linux
dnl
case "$host_os" in
linux*)
	AC_DEFINE(HAVE_EXT2_IOCTLS)
	;;
esac
dnl
dnl OS-specific uncomment control
dnl
LINUX_CMT="#"
CYGWIN_CMT="#"
UNIX_CMT=
case "$host_os" in
linux*)
	LINUX_CMT=
	;;
cygwin)
	CYGWIN_CMT=
	UNIX_CMT="#"
	;;
esac
AC_SUBST(LINUX_CMT)
AC_SUBST(CYGWIN_CMT)
AC_SUBST(UNIX_CMT)
dnl
dnl Linux and Hurd places root files in the / by default
dnl
case "$host_os" in
linux* | gnu* | k*bsd*-gnu)
	if test "$prefix" = NONE -a "$root_prefix" = NONE ; then
		root_prefix="";
		echo "On $host_os systems, root_prefix defaults to ''"
	fi
	;;
esac
dnl
dnl On Linux/hurd, force the prefix to be /usr
dnl
case "$host_os" in
linux* | gnu* | k*bsd*-gnu)
	if test "$prefix" = NONE ; then
		prefix="/usr";
		echo "On $host_os systems, prefix defaults to /usr"
		if test "$mandir" = '${prefix}/man' ; then
			echo "...and mandir defaults to /usr/share/man"
			mandir=/usr/share/man
		fi
	fi
;;
esac
if test "$root_prefix" = NONE ; then
	if test "$prefix" = NONE ; then
		root_prefix="$ac_default_prefix"
	else
		root_prefix="$prefix"
	fi
	root_bindir=$bindir
	root_sbindir=$sbindir
	root_libdir=$libdir
	root_sysconfdir=$sysconfdir
else
	root_bindir='${root_prefix}/bin'
	root_sbindir='${root_prefix}/sbin'
	root_libdir='${root_prefix}/lib'
	root_sysconfdir='${root_prefix}/etc'
fi
AC_SUBST(root_prefix)
AC_SUBST(root_bindir)
AC_SUBST(root_sbindir)
AC_SUBST(root_libdir)
AC_SUBST(root_sysconfdir)
dnl
dnl See if -static works.
dnl
AC_MSG_CHECKING([whether linker accepts -static])
AC_CACHE_VAL(ac_cv_e2fsprogs_use_static,
[SAVE_LDFLAGS=$LDFLAGS; LDFLAGS="$LDFLAGS -static"
AC_TRY_LINK([#include <stdio.h>],[fflush(stdout);],
 ac_cv_e2fsprogs_use_static=yes, ac_cv_e2fsprogs_use_static=no)
LDFLAGS=$SAVE_LDFLAGS])
dnl
dnl Regardless of how the test turns out, Solaris doesn't handle -static
dnl This is caused by the socket library requiring the nsl library, which
dnl requires the -dl library, which only works for dynamically linked 
dnl programs.  It basically means you can't have statically linked programs
dnl which use the network under Solaris.  
dnl
case "$host_os" in
solaris2.*)
	ac_cv_e2fsprogs_use_static=no	
;;
esac
AC_MSG_RESULT($ac_cv_e2fsprogs_use_static)
LDFLAG_STATIC=
if test $ac_cv_e2fsprogs_use_static = yes; then
	LDFLAG_STATIC=-static
fi
AC_SUBST(LDFLAG_STATIC)
dnl
dnl Work around mysterious Darwin / GNU libintl problem
dnl (__asm__ redirection doesn't work for some mysterious reason.  Looks like
dnl Apple hacked gcc somehow?)
dnl
case "$host_os" in
darwin*)
	echo "Using Apple Darwin / GNU libintl workaround"
	AC_DEFINE(_INTL_REDIRECT_MACROS)
	;;
esac
dnl
dnl Make the ss and et directories work correctly.
dnl
SS_DIR=`cd ${srcdir}/lib/ss; pwd`
ET_DIR=`cd ${srcdir}/lib/et; pwd`
AC_SUBST(SS_DIR)
AC_SUBST(ET_DIR)
dnl
dnl Only try to run the test suite if we're not cross compiling.
dnl
if test "$cross_compiling" = yes ; then
  DO_TEST_SUITE=
else
  DO_TEST_SUITE=check
fi
AC_SUBST(DO_TEST_SUITE)
dnl
dnl Only include the intl include files if we're building with them
dnl 
INTL_FLAGS=
if test "$USE_INCLUDED_LIBINTL" = "yes" ; then
	INTL_FLAGS='-I$(top_builddir)/intl -I$(top_srcdir)/intl'
fi
AC_SUBST(INTL_FLAGS)
dnl
dnl Build CFLAGS
dnl
if test $cross_compiling = no; then
   BUILD_CFLAGS="$CFLAGS"
   BUILD_LDFLAGS="$LDFLAGS"
else
   BUILD_CFLAGS=
   BUILD_LDFLAGS=
fi
AC_SUBST(BUILD_CFLAGS)
AC_SUBST(BUILD_LDFLAGS)
dnl
dnl Make our output files, being sure that we create the some miscellaneous 
dnl directories
dnl
test -d lib || mkdir lib
test -d include || mkdir include
test -d include/linux || mkdir include/linux
test -d include/asm || mkdir include/asm
for i in MCONFIG Makefile e2fsprogs.spec \
	util/Makefile util/subst.conf util/gen-tarball \
	lib/et/Makefile lib/ss/Makefile lib/e2p/Makefile \
	lib/ext2fs/Makefile lib/ext2fs/ext2_types.h \
	lib/uuid/Makefile lib/uuid/uuid_types.h \
	lib/blkid/Makefile lib/blkid/blkid_types.h \
	lib/ss/ss.pc lib/uuid/uuid.pc lib/et/com_err.pc \
	lib/e2p/e2p.pc lib/blkid/blkid.pc lib/ext2fs/ext2fs.pc \
	misc/Makefile ext2ed/Makefile e2fsck/Makefile \
	debugfs/Makefile tests/Makefile tests/progs/Makefile \
	resize/Makefile doc/Makefile intl/Makefile po/Makefile.in ; do
	if test -d `dirname ${srcdir}/$i` ; then
		outlist="$outlist $i"
	fi
done
AC_OUTPUT($outlist)
if test -f util/gen-tarball; then chmod +x util/gen-tarball; fi