dnl Process this file with autoconf to produce a configure script.
AC_INIT(libunwind, 0.96, libunwind@linux.hpl.hp.com)
AC_CONFIG_SRCDIR(src/backtrace.c)
AC_CONFIG_AUX_DIR(aux)
AC_CANONICAL_SYSTEM
AM_INIT_AUTOMAKE
AM_MAINTAINER_MODE
AM_CONFIG_HEADER(include/config.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AM_PROG_LIBTOOL
AM_PROG_AS

dnl Checks for libraries.
AC_CHECK_LIB(uca, __uc_get_grs)
CHECK_ATOMIC_OPS

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(asm/ptrace_offsets.h endian.h execinfo.h ia64intrin.h \
		 sys/uc_access.h unistd.h signal.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T

CPPFLAGS="${CPPFLAGS} -D_GNU_SOURCE"
if test x$enable_debug = xyes; then
  CPPFLAGS="${CPPFLAGS} -DDEBUG"
else
  CPPFLAGS="${CPPFLAGS} -DNDEBUG"
fi

AC_CHECK_MEMBERS([struct dl_phdr_info.dlpi_subs],,,[#include <link.h>])
AC_CHECK_TYPES([sighandler_t], [], [],
[$ac_includes_default
#if HAVE_SIGNAL_H
# include <signal.h>
#endif
])

dnl Checks for library functions.
AC_FUNC_MEMCMP
AC_TYPE_SIGNAL
AC_CHECK_FUNCS(dl_iterate_phdr dlmodinfo getunwind ttrace)

get_arch() {
 case "$1" in
  i?86) echo x86;;
  hppa*) echo hppa;;
  *) echo $1;;
 esac
}

build_arch=`get_arch $build_cpu`
target_arch=`get_arch $target_cpu`

AM_CONDITIONAL(REMOTE_ONLY, test x$target_arch != x$build_arch)
AM_CONDITIONAL(ARCH_IA64, test x$target_arch = xia64)
AM_CONDITIONAL(ARCH_HPPA, test x$target_arch = xhppa)
AM_CONDITIONAL(ARCH_X86, test x$target_arch = xx86)
AM_CONDITIONAL(OS_LINUX, expr x$target_os : xlinux >/dev/null)
AM_CONDITIONAL(OS_HPUX, expr x$target_os : xhpux >/dev/null)

if test x$target_arch != x$build_arch; then
  CPPFLAGS="${CPPFLAGS} -DUNW_REMOTE_ONLY"
fi
AC_CONFIG_LINKS(include/libunwind.h:include/libunwind-$target_arch.h
		include/tdep.h:include/tdep-$target_arch.h)

AC_ARG_ENABLE(debug,
[  --enable-debug          turn on debug support (slows down execution)],
[enable_debug=yes], [])

LIBUNWIND___THREAD

if test x$GCC = xyes; then
  CFLAGS="${CFLAGS} -Wall -Wsign-compare"
fi

CCASFLAGS="${CCASFLAGS} ${CPPFLAGS}"

arch="$target_arch"
ARCH=`echo $target_arch | tr [a-z] [A-Z]`

AC_SUBST(arch)
AC_SUBST(ARCH)

AC_CONFIG_FILES(Makefile src/Makefile tests/Makefile
		doc/Makefile doc/common.tex)
AC_OUTPUT