Subversion Repositories freemyipod

dnl Process this file with autoconf to produce a configure script.

AC_INIT(elf2flt.c)

AC_ARG_WITH(zlib-prefix,

	AS_HELP_STRING([--with-zlib-prefix=<dir>], [path to installed zlib]),

	[ ac_zlib_prefix=$withval ],

	[ ac_zlib_prefix=NONE ]

)

AC_ARG_WITH(libbfd,

	AS_HELP_STRING([--with-libbfd=<file>], [path to libbfd.a library to use]),

	[ ac_libbfd=$withval ],

	[ ac_libbfd=NONE ]

)

AC_ARG_WITH(libiberty,

	AS_HELP_STRING([--with-libiberty=<file>], [path to libiberty.a library to use]),

	[ ac_libiberty=$withval ],

	[ ac_libiberty=NONE ]

)

AC_ARG_WITH(bfd-include-dir,

	AS_HELP_STRING([--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,

	AS_HELP_STRING([--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,

	AS_HELP_STRING([--with-binutils-ldscript-dir=<dir>], [path to install elf2flt.ld]),

	[ ac_binutils_ldscript_dir=$withval ],

	[ ac_binutils_ldscript_dir=NONE ]

)

AC_ARG_WITH(binutils-build-dir,

	AS_HELP_STRING([--with-binutils-build-dir=<dir>], [path to compiled binutils tree]),

	[ ac_binutils_build_dir=$withval ],

	[ ac_binutils_build_dir=NONE ]

)

AC_ARG_ENABLE(ld-elf2flt-binary,

	AS_HELP_STRING([--disable-ld-elf2flt-binary], [use ld-elf2flt shell script]),

	[ use_ld_elf2flt_binary=$enableval ],

	[ use_ld_elf2flt_binary=yes ]

)

dnl convert a yes/no variable to 1/0 for C code

var_yn_to_10() {

	if eval test \"\$$1\" = yes ; then

		eval $1=1

	else

		eval $1=0

	fi

}

AC_ARG_ENABLE(got-check,

	AS_HELP_STRING([--disable-got-check], [disable check for GOT (needed on H8)]),

	[ got_check=$enableval ],

	[ got_check=yes ]

)

var_yn_to_10 got_check

AC_ARG_ENABLE(emit-relocs,

	AS_HELP_STRING([--disable-emit-relocs], [don't use the --emit-relocs (-q) linker option]),

	[ emit_relocs=$enableval ],

	[ emit_relocs=yes ]

)

var_yn_to_10 emit_relocs

AC_ARG_ENABLE(emit-ctor-dtor,

	AS_HELP_STRING([--enable-emit-ctor-dtor], [manually create ctor/dtor list]),

	[ emit_ctor_dtor=$enableval ],

	[ emit_ctor_dtor=no ]

)

var_yn_to_10 emit_ctor_dtor

AC_ARG_ENABLE(always-reloc-text,

	AS_HELP_STRING([--enable-always-reloc-text], [always process text relocs ignoring pic/got (needed on Blackfin)]),

	[ always_reloc_text=$enableval ],

	[

	case $target in

		bfin*) always_reloc_text=yes;;

		*)     always_reloc_text=no;;

	esac

	]

)

var_yn_to_10 always_reloc_text

AC_CANONICAL_HOST

AC_CANONICAL_TARGET

dnl Checks for programs.

AC_PROG_CC

AC_USE_SYSTEM_EXTENSIONS

AC_PROG_INSTALL

if test "$ac_binutils_build_dir" != "NONE"; then

  test "$ac_libbfd"               = "NONE" && ac_libbfd="$ac_binutils_build_dir/bfd/libbfd.a"

  test "$ac_libiberty"            = "NONE" && ac_libiberty="$ac_binutils_build_dir/libiberty/libiberty.a"

  test "$ac_bfd_include_dir"      = "NONE" && ac_bfd_include_dir="$ac_binutils_build_dir/bfd"

  test "$ac_binutils_include_dir" = "NONE" && ac_binutils_include_dir="$ac_binutils_build_dir/include"

fi

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

if test "$ac_zlib_prefix" = "NONE"; then

  AC_CHECK_LIB(z, deflate)

else

  LIBS="-L$ac_zlib_prefix/lib -lz $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

zlib_include_dir=

if test "$ac_zlib_prefix" != "NONE"; then

  zlib_include_dir="-I$ac_zlib_prefix/include"

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

SYMBOL_PREFIX=

case $target in

	h8300|bfin*)

		SYMBOL_PREFIX=_

		;;

esac

dnl Make sure we resolve system symbols before libiberty/libbfd ones.

dnl Otherwise, things like getopt get screwed up because the system headers

dnl redirect some functions to the system symbols, but other local symbols

dnl come from libiberty/libbfd.

dnl int getopt(int, char * const [], const char *) __asm("_" "getopt" "$UNIX2003");

AC_CHECK_LIB(c, malloc, LIBS="-lc $LIBS")

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 \

	getline \

	libintl_dgettext \

	strsignal \

])

test "$GCC" = yes && CFLAGS="-Wall $CFLAGS"

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(zlib_include_dir)

AC_SUBST(binutils_ldscript_dir)

AC_SUBST(use_ld_elf2flt_binary)

AC_SUBST(got_check)

AC_SUBST(emit_relocs)

AC_SUBST(emit_ctor_dtor)

AC_SUBST(always_reloc_text)

AC_SUBST(SYMBOL_PREFIX)

AC_OUTPUT(ld-elf2flt.sh:ld-elf2flt.in Makefile elf2flt.ld)