AC_INIT(strace.c)
AC_CANONICAL_SYSTEM()
AC_MSG_CHECKING(for supported operating system)

case "$host_os" in
linux*)
	opsys=linux
	;;
sunos4*)
	opsys=sunos4
	;;
solaris2*)
	opsys=svr4
	;;
sysv4*)
	opsys=svr4
	;;
sysv5*)
	opsys=svr4
	;;
irix[[56]]*)
	opsys=svr4
	;;
freebsd*)
	opsys=freebsd
	;;
*)
	AC_MSG_ERROR(this operating system is not yet supported by strace)
	;;
esac
AC_MSG_RESULT($opsys)

# Autoheader trick.  Heh, heh.
opsys_list='
@@@syms="$syms LINUX SUNOS4 SVR4 FREEBSD"@@@
'

AC_MSG_CHECKING(for supported architecture)
case "$target_cpu" in
i[[3456]]86|pentium)
	arch=i386
	;;
ia64)
	arch=ia64
	;;
m68k)
	arch=m68k
	;;
sparc*)
	arch=sparc
	;;
mips*)
	arch=mips
	;;
alpha*)
	arch=alpha
	;;
ppc|powerpc)
	arch=powerpc
	;;
arm)
	arch=arm
	;;
s390)
	arch=s390
	;;
s390x)
	arch=s390x
	;;
hppa*|parisc*)
	arch=hppa
	;;
sh)
	arch=sh
	;;
x86?64*)
	arch=x86_64
	;;
*)
	AC_MSG_ERROR(this architecture is not yet supported by strace)
	;;
esac
AC_MSG_RESULT($arch)

# Autoheader trick.  Heh, heh.
arch_list='
@@@syms="$syms I386 IA64 M68K SPARC MIPS ALPHA ARM POWERPC S390 S390X HPPA SH X86_64"@@@
'

osarch="$opsys"
if test -d "$srcdir/$opsys/$arch"; then
	osarch="$opsys/$arch"
fi

OPSYS=`echo $opsys | tr '[[a-z]]' '[[A-Z]]'`
ARCH=`echo $arch | tr '[[a-z]]' '[[A-Z]]'`

CFLAGS="-D_GNU_SOURCE $CFLAGS"
AC_CONFIG_HEADER(config.h)
AC_SUBST(opsys)
AC_DEFINE_UNQUOTED($OPSYS)
case "$host_os" in
sysv4.2uw*)
	AC_DEFINE(UNIXWARE, 2)
	;;
sysv5*)
	AC_DEFINE(UNIXWARE, 7)
	;;
esac
AC_SUBST(arch)
AC_DEFINE_UNQUOTED($ARCH)
AC_SUBST(osarch)
AC_PROG_CC
AC_PROG_HOSTCC($host_alias $host)
AC_MP_PROCFS
AC_POLLABLE_PROCFS
AC_STRUCT_PR_SYSCALL
AC_STRUCT_MSG_CONTROL
AC_INCLUDEDIR
if test "x$OPSYS" = "xSUNOS4" && test "x$ARCH" = "xSPARC"
then
	AC_MSG_CHECKING(for valid machine include directory)
	if test -d "$includedir/sun4"
	then
		rm -f machine
		ln -s $includedir/sun4 machine
		AC_MSG_RESULT(yes)
		AC_DEFINE(SUNOS4_KERNEL_ARCH_KLUDGE)
	else
		AC_MSG_RESULT(no)
	fi
fi
AC_WARNFLAGS
if test "x$OPSYS" = "xSUNOS4"
then
	if test -n "$GCC"
	then
		# SunOS 4.x header files don't declare int functions.
		WARNFLAGS="$WARNFLAGS -Wno-implicit"
	fi
fi
AC_PROG_CPP
AC_PROG_GCC_TRADITIONAL
AC_PROG_INSTALL
AC_C_CONST
AC_HEADER_STDC
AC_HEADER_DIRENT
AC_TYPE_SIGNAL
AC_STRUCT_ST_BLKSIZE
AC_STRUCT_ST_BLOCKS
AC_STRUCT_ST_RDEV
AC_HEADER_STAT
AC_TYPE_UID_T
AC_TYPE_MODE_T
AC_TYPE_GETGROUPS
AC_HEADER_MAJOR
AC_SIG_ATOMIC_T
AC_SIGINFO_T
AC_STAT64
AC_SIN6_SCOPE_ID
AC_LONG_LONG
AC_LITTLE_ENDIAN_LONG_LONG
AC_OFF_T_IS_LONG_LONG
AC_RLIM_T_IS_LONG_LONG
AC_ST_FLAGS
AC_ST_ACLCNT
AC_ST_LEVEL
AC_ST_FSTYPE
AC_ST_GEN
AC_STRUCT_OPTHDR
AC_STRUCT_T_OPTHDR
if test x$OPSYS != xLINUX; then
AC_CHECK_LIB(nsl, main)
fi
AC_CHECK_FUNCS(sigaction strerror strsignal pread sys_siglist _sys_siglist getdents mctl prctl sendmsg inet_ntop if_indextoname)
AC_CHECK_HEADERS(sys/reg.h sys/filio.h sys/acl.h sys/asynch.h sys/door.h stropts.h sys/conf.h sys/stream.h sys/tihdr.h sys/tiuser.h sys/sysconfig.h asm/sigcontext.h ioctls.h sys/ioctl.h sys/ptrace.h termio.h linux/ptrace.h asm/reg.h linux/icmp.h linux/in6.h sys/uio.h sys/aio.h linux/netlink.h linux/if_packet.h poll.h sys/poll.h sys/vfs.h netinet/tcp.h netinet/udp.h asm/sysmips.h linux/utsname.h sys/nscsys.h)
AC_DECL_SYS_ERRLIST
AC_DECL_SYS_SIGLIST
AC_DECL__SYS_SIGLIST
if test ! -d $osarch; then
	mkdir -p $osarch
fi
AC_OUTPUT(Makefile $osarch/Makefile)