dnl Process this file with autoconf to produce a configure script.
AC_INIT(elf2flt.c)

AC_ARG_WITH(libbfd,
	[ --with-libbfd=<file>  path to libbfd.a library to use ],
	[ ac_libbfd=$withval ],
	[ ac_libbfd=NONE ]
)

AC_ARG_WITH(libiberty,
	[ --with-libiberty=<file>  path to libiberty.a library to use ],
	[ ac_libiberty=$withval ],
	[ ac_libiberty=NONE ]
)

AC_ARG_WITH(bfd-include-dir,
	[ --with-bfd-include-dir=<dir>  include path for correct bfd.h ],
	[ ac_bfd_include_dir=$withval ],
	[ ac_bfd_include_dir=NONE ]
)

AC_ARG_WITH(binutils-include-dir,
	[ --with-binutils-include-dir=<dir>  include path for binutils headers ],
	[ ac_binutils_include_dir=$withval ],
	[ ac_binutils_include_dir=NONE ]
)

AC_ARG_WITH(binutils-ldscript-dir,
	[ --with-binutils-ldscript-dir=<dir>  path to install elf2flt.ld ],
	[ ac_binutils_ldscript_dir=$withval ],
	[ ac_binutils_ldscript_dir=NONE ]
)

AC_ARG_ENABLE(got-check,
	[ --disable-got-check - disable check for GOT (needed on H8) ],
	[ got_check=$enableval ],
	[ got_check=yes ]
)

AC_ARG_ENABLE(emit_relocs,
	[ --disable-emit-relocs - don't use the --emit-relocs (-q) linker option ],
	[ emit_relocs=$enableval ],
	[ emit_relocs=yes ]
)

AC_CANONICAL_HOST
AC_CANONICAL_TARGET

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL

dnl Checks for libraries.
if test "$ac_libiberty" = "NONE"; then
  AC_CHECK_LIB(iberty, objalloc_create)
  ac_libiberty=auto
else
  LIBS="$ac_libiberty $LIBS"
fi
if test "$ac_libbfd" = "NONE"; then
  AC_CHECK_LIB(bfd, bfd_openr)
  ac_libbfd=auto
else
  LIBS="$ac_libbfd $LIBS"
fi

bfd_include_dir=
if test "$ac_bfd_include_dir" != "NONE"; then
  bfd_include_dir="-I$ac_bfd_include_dir"
fi

binutils_include_dir=
if test "$ac_binutils_include_dir" != "NONE"; then
  binutils_include_dir="-I$ac_binutils_include_dir"
fi

binutils_ldscript_dir=
if test "$ac_binutils_ldscript_dir" = "NONE"; then
  ac_binutils_ldscript_dir="\${TOOLDIR}/../${target_alias}/lib"
fi
binutils_ldscript_dir="$ac_binutils_ldscript_dir"

if test "$ac_libbfd" = "NONE" -o "$ac_libiberty" = "NONE" ; then
	AC_MSG_ERROR([

You need to specify the location of the libfd.a and libiberty.a
host libraries from the binutils package.
	
Run configure again specifying these options:
	
  ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
])
fi

if test "$ac_bfd_include_dir" = "NONE" ; then
	AC_MSG_ERROR([

You need to specify the location of the bfd.h header from a
configured/compiled version of the binutils package for your target.
Without this your elf2flt may crash as it will try to use the
systems bfd.h which may be from a different binutils package.

Run configure again specifying these options:

  ./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
])
fi

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h unistd.h bfd.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST

dnl Checks for library functions.
AC_FUNC_VPRINTF

AC_CHECK_FUNCS(dcgettext)

dnl Subsitute values
AC_SUBST(target)
AC_SUBST(target_alias)
AC_SUBST(target_cpu)
AC_SUBST(target_os)
AC_SUBST(target_vendor)
AC_SUBST(bfd_include_dir)
AC_SUBST(binutils_include_dir)
AC_SUBST(binutils_ldscript_dir)
AC_SUBST(got_check)
AC_SUBST(emit_relocs)

AC_OUTPUT(Makefile ld-elf2flt)