# Process this file with autoconf to produce a configure script, like so:
# 
# aclocal -I .. -I ../config && autoconf && autoheader && automake

AC_PREREQ(2.59)
AC_INIT(libdetect, 1.0)
AC_CONFIG_SRCDIR(detect.c)
AC_CANONICAL_SYSTEM
ACX_NONCANONICAL_TARGET

AM_INIT_AUTOMAKE

AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
AC_ARG_ENABLE(version-specific-runtime-libs,
[  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
[case "$enableval" in
 yes) version_specific_libs=yes ;;
 no)  version_specific_libs=no ;;
 *)   AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
 esac],
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)

AM_MAINTAINER_MODE

GCC_NO_EXECUTABLES

AM_ENABLE_MULTILIB(, ..)

target_alias=${target_alias-$host_alias}
AC_SUBST(target_alias)

AC_CONFIG_HEADERS(config.h)

AC_LANG_C
# The same as in boehm-gc and libstdc++. Have to borrow it from there.
# We must force CC to /not/ be precious variables; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.

m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])

AC_SUBST(CFLAGS)

if test "x$GCC" != "xyes"; then
  AC_MSG_ERROR([libdetect must be built with GCC])
fi
AC_PROG_CPP

AC_MSG_CHECKING([whether symbol versioning is supported])
cat > conftest.map <<EOF
FOO_1.0 {
  global: *foo*; bar; local: *;
};
EOF
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map"
if test x$gcc_no_link = xyes; then
  # If we cannot link, we cannot build shared libraries, so do not use
  # symbol versioning.
  detect_use_symver=no
else
  AC_TRY_LINK([int foo;],[],[detect_use_symver=yes],[detect_use_symver=no])
fi
LDFLAGS="$save_LDFLAGS"
AC_MSG_RESULT($detect_use_symver)
AM_CONDITIONAL(LIBDETECT_USE_SYMVER, [test "x$detect_use_symver" = xyes])

if test x$gcc_no_link = xyes; then
  # Presume the ISO C functions are available; add target-specific
  # configuration here if required.
  AC_DEFINE(HAVE_LONGJMP)
  AC_DEFINE(HAVE_SETJMP)
else
  AC_CHECK_FUNCS(setjmp longjmp)
fi

case "${target_noncanonical}" in
  *ppc*)
	AC_CHECK_HEADERS(altivec.h)
esac

AM_PROG_LIBTOOL
AC_SUBST(enable_shared)
AC_SUBST(enable_static)

# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
  yes)
    # Need the gcc compiler version to know where to install libraries
    # and header files if --enable-version-specific-runtime-libs option
    # is selected.
    toolexecdir='$(libdir)/gcc/$(target_alias)'
    toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
    ;;
  no)
    if test -n "$with_cross_host" &&
       test x"$with_cross_host" != x"no"; then
      # Install a library built with a cross compiler in tooldir, not libdir.
      toolexecdir='$(exec_prefix)/$(target_alias)'
      toolexeclibdir='$(toolexecdir)/lib'
    else
      toolexecdir='$(libdir)/gcc-lib/$(target_alias)'
      toolexeclibdir='$(libdir)'
    fi
    multi_os_directory=`$CC -print-multi-os-directory`
    case $multi_os_directory in
      .) ;; # Avoid trailing /.
      *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
    esac
    ;;
esac
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)

if test ${multilib} = yes; then
  multilib_arg="--enable-multilib"
else
  multilib_arg=
fi

AM_PROG_AS

case "${target_noncanonical}" in
  *ppc*)
    libdetect_targetdep_header=ppc.h
    libdetect_targetdep_src=ppc.c av_trigger.s sighandler.c
    ;;
  *i386*) 
    libdetect_targetdep_header=i386.h
    libdetect_targetdep_src=i386.c cpuid.s
    ;;
  *)
    libdetect_targetdep_header=none.h
    libdetect_targetdep_src=none.c
    ;;
esac

AC_SUBST(libdetect_targetdep_header)
AC_SUBST(libdetect_targetdep_src)

AC_CONFIG_FILES([Makefile])
AC_OUTPUT