[grub2.git] / configure.ac

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

# Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009  Free Software Foundation, Inc.
#
# This configure.ac is free software; the author
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.

dnl This configure script is complicated, because GRUB needs to deal
dnl with three potentially different types:
dnl
dnl   build  -- the environment for building GRUB
dnl   host   -- the environment for running utilities
dnl   target -- the environment for running GRUB
dnl
dnl In addition, GRUB needs to deal with a platform specification
dnl which specifies the system running GRUB, such as firmware.
dnl This is necessary because the target type in autoconf does not
dnl describe such a system very well.
dnl
dnl The current strategy is to use variables with no prefix (such as
dnl CC, CFLAGS, etc.) for the host type as well as the build type,
dnl because GRUB does not need to use those variables for the build
dnl type, so there is no conflict. Variables with the prefix "TARGET_"
dnl (such as TARGET_CC, TARGET_CFLAGS, etc.) are used for the target
dnl type.


AC_INIT([GRUB],[1.96],[bug-grub@gnu.org])
AC_PREREQ(2.59)
AC_CONFIG_SRCDIR([include/grub/dl.h])
AC_CONFIG_HEADER([config.h])

# Checks for host and target systems.
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

# Program name transformations
AC_ARG_PROGRAM

case "$target_cpu" in
  i[[3456]]86) target_cpu=i386 ;;
esac

# Specify the platform (such as firmware).
AC_ARG_WITH([platform],
            AS_HELP_STRING([--with-platform=PLATFORM],
                           [select the host platform [[guessed]]]))

# Guess the platform if not specified.
if test "x$with_platform" = x; then
  case "$target_cpu"-"$target_vendor" in
    i386-apple) platform=efi ;;
    i386-*) platform=pc ;;
    x86_64-apple) platform=efi ;;
    x86_64-*) platform=pc ;;
    powerpc-*) platform=ieee1275 ;;
    powerpc64-*) platform=ieee1275 ;;
    sparc64-*) platform=ieee1275 ;;
    *) AC_MSG_ERROR([unsupported CPU: "$target_cpu"]) ;;
  esac
else
  platform="$with_platform"
fi

# Adjust CPU unless target was explicitly specified.
if test -z "$target_alias"; then
  case "$target_cpu"-"$platform" in
    x86_64-efi) ;;
    x86_64-*) target_cpu=i386 ;;
    powerpc64-ieee1275) target_cpu=powerpc ;;
  esac
fi

# Check if the platform is supported, make final adjustments.
case "$target_cpu"-"$platform" in
  i386-efi) ;;
  x86_64-efi) ;;
  i386-pc) ;;
  i386-coreboot) ;;
  i386-linuxbios) platform=coreboot ;;
  i386-ieee1275) ;;
  powerpc-ieee1275) ;;
  sparc64-ieee1275) ;;
  *) AC_MSG_ERROR([platform "$platform" is not supported for target CPU "$target_cpu"]) ;;
esac

case "$target_cpu" in
  i386 | powerpc) target_m32=1 ;;
  x86_64 | sparc64) target_m64=1 ;;
esac

case "$host_os" in
  mingw32) host_os=cygwin ;;
esac

# This normalizes the names, and creates a new variable ("host_kernel")
# while at it, since the mapping is not always 1:1 (e.g. different OSes
# using the same kernel type).
case "$host_os" in
  gnu*)				host_kernel=hurd ;;
  linux*)			host_kernel=linux ;;
  freebsd* | kfreebsd*-gnu)	host_kernel=freebsd ;;
  cygwin)			host_kernel=windows ;;
esac

AC_SUBST(host_cpu)
AC_SUBST(host_os)
AC_SUBST(host_kernel)

AC_SUBST(target_cpu)
AC_SUBST(platform)

#
# Checks for build programs.
#

# Although cmp is listed in the GNU Coding Standards as a command which
# can used directly, OpenBSD lacks cmp in the default installation.
AC_CHECK_PROGS([CMP], [cmp])
if test "x$CMP" = x; then
  AC_MSG_ERROR([cmp is not found])
fi

AC_CHECK_PROGS([YACC], [bison])
if test "x$YACC" = x; then
  AC_MSG_ERROR([bison is not found])
fi

for file in /usr/src/unifont.bdf ; do
  if test -e $file ; then
    AC_SUBST([UNIFONT_BDF], [$file])
    break
  fi
done

AC_PROG_INSTALL
AC_PROG_AWK
AC_PROG_MAKE_SET

# These are not a "must".
AC_PATH_PROG(RUBY, ruby)
AC_PATH_PROG(HELP2MAN, help2man)

#
# Checks for host programs.
#

AC_PROG_CC
# Must be GCC.
test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required])

AC_GNU_SOURCE
AC_SYS_LARGEFILE

# Identify characteristics of the host architecture.
AC_C_BIGENDIAN
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long)

grub_apple_cc
if test x$grub_cv_apple_cc == xyes ; then
  CFLAGS="$CFLAGS -DAPPLE_CC=1 -fnested-functions"
  ASFLAGS="$ASFLAGS -DAPPLE_CC=1"
fi

# Check LZO when compiling for the i386-pc.
if test "$target_cpu"-"$platform" = i386-pc; then
  AC_ARG_ENABLE([lzo],
	      [AS_HELP_STRING([--enable-lzo],
                             [use lzo to compress kernel (default is lzma)])])
  [if [ x"$enable_lzo" = xyes ]; then
    # There are three possibilities. LZO version 2 installed with the name
    # liblzo2, with the name liblzo, and LZO version 1.]
    AC_DEFINE([ENABLE_LZO], [1], [Use lzo compression])
    AC_CHECK_LIB([lzo2], [__lzo_init_v2], [LIBLZO="-llzo2"],
      [AC_CHECK_LIB([lzo], [__lzo_init_v2], [LIBLZO="-llzo"],
        [AC_CHECK_LIB([lzo], [__lzo_init2], [LIBLZO="-llzo"],
	       [AC_MSG_ERROR([LZO library version 1.02 or later is required])])])])
    AC_SUBST([LIBLZO])
    [LIBS="$LIBS $LIBLZO"]
    AC_CHECK_FUNC([lzo1x_999_compress], ,
	        [AC_MSG_ERROR([LZO1X-999 must be enabled])])

    [# LZO version 2 uses lzo/lzo1x.h, while LZO version 1 uses lzo1x.h.]
    AC_CHECK_HEADERS([lzo/lzo1x.h lzo1x.h])
  [else]
    AC_DEFINE([ENABLE_LZMA], [1], [Use lzma compression])
  [fi]
  AC_SUBST([enable_lzo])
fi

# Check for functions.
AC_CHECK_FUNCS(posix_memalign memalign asprintf)

#
# Check for target programs.
#

# Find tools for the target.
if test "x$target_alias" != x && test "x$host_alias" != "x$target_alias"; then
  tmp_ac_tool_prefix="$ac_tool_prefix"
  ac_tool_prefix=$target_alias-

  AC_CHECK_TOOLS(TARGET_CC, [gcc egcs cc],
                 [AC_MSG_ERROR([none of gcc, egcs and cc is found. set TARGET_CC manually.])])
  AC_CHECK_TOOL(OBJCOPY, objcopy)
  AC_CHECK_TOOL(STRIP, strip)
  AC_CHECK_TOOL(NM, nm)

  ac_tool_prefix="$tmp_ac_tool_prefix"
else
  if test "x$TARGET_CC" = x; then
    TARGET_CC=$CC
  fi
  AC_CHECK_TOOL(OBJCOPY, objcopy)
  AC_CHECK_TOOL(STRIP, strip)
  AC_CHECK_TOOL(NM, nm)
fi
AC_SUBST(TARGET_CC)


# Test the C compiler for the target environment.
tmp_CC="$CC"
tmp_CFLAGS="$CFLAGS"
tmp_LDFLAGS="$LDFLAGS"
tmp_CPPFLAGS="$CPPFLAGS"
tmp_LIBS="$LIBS"
CC="$TARGET_CC"
CFLAGS="$TARGET_CFLAGS"
CPPFLAGS="$TARGET_CPPFLAGS"
LDFLAGS="$TARGET_LDFLAGS"
LIBS=""

if test "x$TARGET_CFLAGS" = x; then
  # debug flags.
  TARGET_CFLAGS="-Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes \
                 -Wundef -Wstrict-prototypes -g"

  # optimization flags.
  AC_CACHE_CHECK([whether optimization for size works], grub_cv_cc_Os, [
    CFLAGS=-Os
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
		      [grub_cv_cc_Os=yes],
		      [grub_cv_cc_Os=no])
  ])
  if test "x$grub_cv_cc_Os" = xyes; then
    TARGET_CFLAGS="$TARGET_CFLAGS -Os"
  else
    TARGET_CFLAGS="$TARGET_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops"
  fi

  # Force no alignment to save space on i386.
  if test "x$target_cpu" = xi386; then
    AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [
      CFLAGS="$CFLAGS -falign-loops=1"
      AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
		        [grub_cv_cc_falign_loop=yes],
			[grub_cv_cc_falign_loop=no])
    ])

    if test "x$grub_cv_cc_falign_loop" = xyes; then
      TARGET_CFLAGS="$TARGET_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1"
    else
      TARGET_CFLAGS="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
    fi
  fi
fi

grub_apple_target_cc
if test x$grub_cv_apple_target_cc == xyes ; then
  TARGET_CFLAGS="$TARGET_CFLAGS -DAPPLE_CC=1 -fnested-functions"
  CFLAGS="$CFLAGS -DAPPLE_CC=1 -fnested-functions"
  TARGET_ASFLAGS="$TARGET_ASFLAGS -DAPPLE_CC=1"
  TARGET_APPLE_CC=1
  AC_CHECK_PROG([OBJCONV], [objconv], [objconv], [])
  if test "x$OBJCONV" = x ; then
     AC_CHECK_PROG([OBJCONV], [objconv], [./objconv], [], [.])
  fi
  if test "x$OBJCONV" = x ; then
    AC_MSG_ERROR([objconv not found which is required when building with apple compiler])
  fi
  TARGET_IMG_LDSCRIPT=
  TARGET_IMG_CFLAGS="-static"
  TARGET_IMG_LDFLAGS='-nostdlib -static -Wl,-preload -Wl,-segalign,20 -Wl,-image_base,'
  TARGET_IMG_LDFLAGS_AC='-nostdlib -static -Wl,-preload -Wl,-segalign,20 -Wl,-image_base,'
else
  TARGET_APPLE_CC=0
# Use linker script if present, otherwise use builtin -N script.
AC_MSG_CHECKING([for option to link raw image])
if test -f "${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"; then
  TARGET_IMG_LDSCRIPT='$(top_srcdir)'"/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
  TARGET_IMG_LDFLAGS="-Wl,-T${TARGET_IMG_LDSCRIPT}  -Wl,-Ttext,"
  TARGET_IMG_LDFLAGS_AC="-Wl,-T${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
else
  TARGET_IMG_LDSCRIPT=
  TARGET_IMG_LDFLAGS='-Wl,-N  -Wl,-Ttext,'
  TARGET_IMG_LDFLAGS_AC='-Wl,-N  -Wl,-Ttext,'
fi
TARGET_IMG_CFLAGS=
fi

AC_SUBST(TARGET_IMG_LDSCRIPT)
AC_SUBST(TARGET_IMG_LDFLAGS)
AC_SUBST(TARGET_IMG_CFLAGS)
AC_MSG_RESULT([$TARGET_IMG_LDFLAGS_AC])

# For platforms where ELF is not the default link format.
AC_MSG_CHECKING([for command to convert module to ELF format])
case "${host_os}" in
  cygwin) TARGET_OBJ2ELF='grub-pe2elf' ;;
  *) ;;
esac
AC_SUBST(TARGET_OBJ2ELF)
AC_MSG_RESULT([$TARGET_OBJ2ELF])


if test "x$target_m32" = x1; then
  # Force 32-bit mode.
  TARGET_CFLAGS="$TARGET_CFLAGS -m32"
  TARGET_LDFLAGS="$TARGET_LDFLAGS -m32"
  TARGET_MODULE_FORMAT="elf32"
fi

if test "x$target_m64" = x1; then
  # Force 64-bit mode.
  TARGET_CFLAGS="$TARGET_CFLAGS -m64"
  TARGET_LDFLAGS="$TARGET_LDFLAGS -m64"
  TARGET_MODULE_FORMAT="elf64"
fi

if test "$target_cpu"-"$platform" = x86_64-efi; then
  # Use large model to support 4G memory
  AC_CACHE_CHECK([whether option -mcmodel=large works], grub_cv_cc_mcmodel, [
    SAVED_CFLAGS=$CFLAGS
    CFLAGS="$CFLAGS -m64 -mcmodel=large"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
		      [grub_cv_cc_mcmodel=yes],
		      [grub_cv_cc_mcmodel=no])
  ])
  if test "x$grub_cv_cc_mcmodel" = xno; then
    CFLAGS="$SAVED_CFLAGS -m64 -DMCMODEL_SMALL=1"
    TARGET_CFLAGS="$TARGET_CFLAGS -DMCMODEL_SMALL=1"
    AC_MSG_WARN([-mcmodel=large not supported. You wan't be able to use the memory over 4GiB. Upgrade your gcc])
  else
    TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=large"
  fi

  # EFI writes to stack below %rsp, we must not use the red zone
  AC_CACHE_CHECK([whether option -mno-red-zone works], grub_cv_cc_no_red_zone, [
    CFLAGS="$CFLAGS -m64 -mno-red-zone"
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
		      [grub_cv_cc_no_red_zone=yes],
		      [grub_cv_cc_no_red_zone=no])
  ])
  if test "x$grub_cv_cc_no_red_zone" = xno; then
    AC_MSG_ERROR([-mno-red-zone not supported, upgrade your gcc])
  fi

  TARGET_CFLAGS="$TARGET_CFLAGS -mno-red-zone"
fi

#
# Compiler features.
#

# Need __enable_execute_stack() for nested function trampolines?
grub_CHECK_ENABLE_EXECUTE_STACK

# Smashing stack protector.
grub_CHECK_STACK_PROTECTOR
# Need that, because some distributions ship compilers that include
# `-fstack-protector' in the default specs.
if test "x$ssp_possible" = xyes; then
  TARGET_CFLAGS="$TARGET_CFLAGS -fno-stack-protector"
fi
grub_CHECK_STACK_ARG_PROBE
# Cygwin's GCC uses alloca() to probe the stackframe on static
# stack allocations above some threshold.
if test x"$sap_possible" = xyes; then
  TARGET_CFLAGS="$TARGET_CFLAGS -mno-stack-arg-probe"
fi

AC_SUBST(TARGET_CFLAGS)
AC_SUBST(TARGET_MODULE_FORMAT)
AC_SUBST(OBJCONV)
AC_SUBST(TARGET_APPLE_CC)
AC_SUBST(TARGET_ASFLAGS)
AC_SUBST(TARGET_CPPFLAGS)
AC_SUBST(TARGET_LDFLAGS)

# Set them to their new values for the tests below.
CC="$TARGET_CC"
CFLAGS="$TARGET_CFLAGS -nostdlib"
CPPFLAGS="$TARGET_CPPFLAGS"
LDFLAGS="$TARGET_LDFLAGS"

# Defined in aclocal.m4.
grub_PROG_TARGET_CC
if test "x$TARGET_APPLE_CC" != x1 ; then
grub_PROG_OBJCOPY_ABSOLUTE
fi
grub_PROG_LD_BUILD_ID_NONE
grub_ASM_USCORE
if test "x$target_cpu" = xi386; then
  if test ! -z "$TARGET_IMG_LDSCRIPT"; then
    # Check symbols provided by linker script.
    CFLAGS="$TARGET_CFLAGS -nostdlib $TARGET_IMG_LDFLAGS_AC -Wl,-Ttext,8000,--defsym,___main=0x8100"
  fi
  if test "x$platform" = xpc && test "x$TARGET_APPLE_CC" != x1 ; then
    grub_CHECK_BSS_START_SYMBOL
    grub_CHECK_END_SYMBOL
  fi
  CFLAGS="$TARGET_CFLAGS"
  grub_I386_ASM_PREFIX_REQUIREMENT
  grub_I386_ASM_ADDR32
  grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK
else
  AC_DEFINE([NESTED_FUNC_ATTR], [], [Catch gcc bug])
fi

AH_BOTTOM([#if defined(__i386__) && !defined(GRUB_UTIL)
#define NESTED_FUNC_ATTR __attribute__ ((__regparm__ (1)))
#else
#define NESTED_FUNC_ATTR
#endif])

# Restore the flags.
CC="$tmp_CC"
CFLAGS="$tmp_CFLAGS"
CPPFLAGS="$tmp_CPPFLAGS"
LDFLAGS="$tmp_LDFLAGS"
LIBS="$tmp_LIBS"

#
# Check for options.
#

# Memory manager debugging.
AC_ARG_ENABLE([mm-debug],
	      AS_HELP_STRING([--enable-mm-debug],
                             [include memory manager debugging]),
              [AC_DEFINE([MM_DEBUG], [1],
                         [Define to 1 if you enable memory manager debugging.])])

AC_ARG_ENABLE([grub-emu],
	      [AS_HELP_STRING([--enable-grub-emu],
                             [build and install the `grub-emu' debugging utility])])
AC_ARG_ENABLE([grub-emu-usb],
	      [AS_HELP_STRING([--enable-grub-emu-usb],
                             [build and install the `grub-emu' debugging utility with USB support])])
[if [ x"$enable_grub_emu" = xyes ]; then
  # Check for curses libraries.]
  AC_CHECK_LIB([ncurses], [wgetch], [LIBCURSES="-lncurses"],
    [AC_CHECK_LIB([curses], [wgetch], [LIBCURSES="-lcurses"],
      [AC_MSG_ERROR([(n)curses libraries are required to build `grub-emu'])])])
  AC_SUBST([LIBCURSES])

  [# Check for headers.]
  AC_CHECK_HEADERS([ncurses/curses.h], [],
    [AC_CHECK_HEADERS([ncurses.h], [],
      [AC_CHECK_HEADERS([curses.h], [],
	[AC_MSG_ERROR([(n)curses header files are required to build `grub-emu'])])])])

  [if [ x"$enable_grub_emu_usb" = xyes ]; then
    # Check for libusb libraries.]
    AC_CHECK_LIB([usb], [usb_claim_interface], [LIBUSB="-lusb"],
      [AC_MSG_ERROR([libusb libraries are required to build `grub-emu' with USB support])])
    AC_SUBST([LIBUSB])

    [# Check for headers.]
    AC_CHECK_HEADERS([usb.h], [],
      [AC_MSG_ERROR([libusb header file is required to build `grub-emu' with USB support])])
  [fi]
[fi]
AC_SUBST([enable_grub_emu])
AC_SUBST([enable_grub_emu_usb])

AC_ARG_ENABLE([grub-fstest],
	      [AS_HELP_STRING([--enable-grub-fstest],
                             [build and install the `grub-fstest' debugging utility])])
AC_SUBST([enable_grub_fstest])

AC_ARG_ENABLE([grub-pe2elf],
	      [AS_HELP_STRING([--enable-grub-pe2elf],
                             [build and install the `grub-pe2elf' conversion utility])])
AC_SUBST([enable_grub_pe2elf])

AC_ARG_ENABLE([grub-mkfont],
	      [AS_HELP_STRING([--enable-grub-mkfont],
                             [build and install the `grub-mkfont' utility])])
if test x"$enable_grub_mkfont" = xyes ; then
  # Check for freetype libraries.
  AC_CHECK_PROGS([FREETYPE], [freetype-config])
  if test "x$FREETYPE" = x ; then
    AC_MSG_ERROR([freetype2 libraries are required to build `grub-mkfont'])
  fi
  freetype_cflags=`freetype-config --cflags`
  freetype_libs=`freetype-config --libs`
fi
AC_SUBST([enable_grub_mkfont])
AC_SUBST([freetype_cflags])
AC_SUBST([freetype_libs])

AC_ARG_ENABLE([efiemu],
	      [AS_HELP_STRING([--enable-efiemu],
                             [build and install the efiemu runtimes])])
AC_SUBST([enable_efiemu])
AC_SUBST(ASFLAGS)

# Output files.
grub_CHECK_LINK_DIR
if test x"$link_dir" = xyes ; then
  AC_CONFIG_LINKS([include/grub/cpu:include/grub/$target_cpu
	include/grub/machine:include/grub/$target_cpu/$platform])
else
  mkdir -p include/grub 2>/dev/null
  rm -rf include/grub/cpu
  cp -rp $srcdir/include/grub/$target_cpu include/grub/cpu 2>/dev/null
  rm -rf include/grub/machine
  cp -rp $srcdir/include/grub/$target_cpu/$platform include/grub/machine 2>/dev/null
fi
AC_CONFIG_FILES([Makefile gensymlist.sh genkernsyms.sh])
AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
AC_OUTPUT
Commit	Line	Data
6a161fa9	1	# Process this file with autoconf to produce a configure script.
6a161fa9	2
1e901a75	3	# Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
6a161fa9	4	#
	5	# This configure.ac is free software; the author
	6	# gives unlimited permission to copy and/or distribute it,
	7	# with or without modifications, as long as this notice is preserved.
	8	#
	9	# This program is distributed in the hope that it will be useful,
	10	# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
	11	# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
	12	# PARTICULAR PURPOSE.
	13
b977bf01	14	dnl This configure script is complicated, because GRUB needs to deal
	15	dnl with three potentially different types:
	16	dnl
	17	dnl build -- the environment for building GRUB
	18	dnl host -- the environment for running utilities
	19	dnl target -- the environment for running GRUB
	20	dnl
	21	dnl In addition, GRUB needs to deal with a platform specification
	22	dnl which specifies the system running GRUB, such as firmware.
	23	dnl This is necessary because the target type in autoconf does not
	24	dnl describe such a system very well.
	25	dnl
	26	dnl The current strategy is to use variables with no prefix (such as
	27	dnl CC, CFLAGS, etc.) for the host type as well as the build type,
	28	dnl because GRUB does not need to use those variables for the build
	29	dnl type, so there is no conflict. Variables with the prefix "TARGET_"
	30	dnl (such as TARGET_CC, TARGET_CFLAGS, etc.) are used for the target
	31	dnl type.
	32
	33
eb73121d	34	AC_INIT([GRUB],[1.96],[bug-grub@gnu.org])
46e04eb9	35	AC_PREREQ(2.59)
4b13b216	36	AC_CONFIG_SRCDIR([include/grub/dl.h])
6a161fa9	37	AC_CONFIG_HEADER([config.h])
6a161fa9	38
b977bf01	39	# Checks for host and target systems.
6a161fa9	40	AC_CANONICAL_HOST
b977bf01	41	AC_CANONICAL_TARGET
6a161fa9	42
1d543c3e	43	# Program name transformations
	44	AC_ARG_PROGRAM
	45
b977bf01	46	case "$target_cpu" in
b977bf01	47	i[[3456]]86) target_cpu=i386 ;;
6a161fa9	48	esac
6a161fa9	49
05568c2e	50	# Specify the platform (such as firmware).
	51	AC_ARG_WITH([platform],
	52	AS_HELP_STRING([--with-platform=PLATFORM],
83b984de	53	[select the host platform [[guessed]]]))
05568c2e	54
	55	# Guess the platform if not specified.
	56	if test "x$with_platform" = x; then
b977bf01	57	case "$target_cpu"-"$target_vendor" in
05568c2e	58	i386-apple) platform=efi ;;
05568c2e	59	i386-*) platform=pc ;;
58393a2d	60	x86_64-apple) platform=efi ;;
737feb35	61	x86_64-*) platform=pc ;;
05568c2e	62	powerpc-*) platform=ieee1275 ;;
58393a2d	63	powerpc64-*) platform=ieee1275 ;;
05568c2e	64	sparc64-*) platform=ieee1275 ;;
58393a2d	65	*) AC_MSG_ERROR([unsupported CPU: "$target_cpu"]) ;;
05568c2e	66	esac
	67	else
	68	platform="$with_platform"
	69	fi
	70
58393a2d	71	# Adjust CPU unless target was explicitly specified.
	72	if test -z "$target_alias"; then
	73	case "$target_cpu"-"$platform" in
	74	x86_64-efi) ;;
3f4ce737	75	x86_64-*) target_cpu=i386 ;;
3f4ce737	76	powerpc64-ieee1275) target_cpu=powerpc ;;
20011694	77	esac
	78	fi
	79
58393a2d	80	# Check if the platform is supported, make final adjustments.
b977bf01	81	case "$target_cpu"-"$platform" in
05568c2e	82	i386-efi) ;;
3f4ce737	83	x86_64-efi) ;;
05568c2e	84	i386-pc) ;;
546f966a	85	i386-coreboot) ;;
58393a2d	86	i386-linuxbios) platform=coreboot ;;
3d04eab8	87	i386-ieee1275) ;;
05568c2e	88	powerpc-ieee1275) ;;
05568c2e	89	sparc64-ieee1275) ;;
58393a2d	90	*) AC_MSG_ERROR([platform "$platform" is not supported for target CPU "$target_cpu"]) ;;
6a161fa9	91	esac
6a161fa9	92
3f4ce737	93	case "$target_cpu" in
	94	i386 \| powerpc) target_m32=1 ;;
	95	x86_64 \| sparc64) target_m64=1 ;;
	96	esac
	97
6e5a42fe	98	case "$host_os" in
	99	mingw32) host_os=cygwin ;;
	100	esac
	101
9304eef1	102	# This normalizes the names, and creates a new variable ("host_kernel")
	103	# while at it, since the mapping is not always 1:1 (e.g. different OSes
	104	# using the same kernel type).
	105	case "$host_os" in
	106	gnu*) host_kernel=hurd ;;
	107	linux*) host_kernel=linux ;;
	108	freebsd* \| kfreebsd*-gnu) host_kernel=freebsd ;;
	109	cygwin) host_kernel=windows ;;
	110	esac
	111
56978920	112	AC_SUBST(host_cpu)
56978920	113	AC_SUBST(host_os)
9304eef1	114	AC_SUBST(host_kernel)
6e5a42fe	115
b977bf01	116	AC_SUBST(target_cpu)
05568c2e	117	AC_SUBST(platform)
6a161fa9	118
b977bf01	119	#
	120	# Checks for build programs.
	121	#
144f1f98	122
6c826348	123	# Although cmp is listed in the GNU Coding Standards as a command which
	124	# can used directly, OpenBSD lacks cmp in the default installation.
	125	AC_CHECK_PROGS([CMP], [cmp])
	126	if test "x$CMP" = x; then
	127	AC_MSG_ERROR([cmp is not found])
	128	fi
	129
144f1f98	130	AC_CHECK_PROGS([YACC], [bison])
1569ec51	131	if test "x$YACC" = x; then
6c826348	132	AC_MSG_ERROR([bison is not found])
1569ec51	133	fi
1569ec51	134
1e901a75	135	for file in /usr/src/unifont.bdf ; do
4931827f	136	if test -e $file ; then
1e901a75	137	AC_SUBST([UNIFONT_BDF], [$file])
4931827f	138	break
	139	fi
	140	done
	141
b977bf01	142	AC_PROG_INSTALL
	143	AC_PROG_AWK
	144	AC_PROG_MAKE_SET
	145
68807e5f	146	# These are not a "must".
b977bf01	147	AC_PATH_PROG(RUBY, ruby)
68807e5f	148	AC_PATH_PROG(HELP2MAN, help2man)
6a161fa9	149
b977bf01	150	#
	151	# Checks for host programs.
	152	#
	153
	154	AC_PROG_CC
6a161fa9	155	# Must be GCC.
	156	test "x$GCC" = xyes \|\| AC_MSG_ERROR([GCC is required])
	157
4889bdec	158	AC_GNU_SOURCE
b977bf01	159	AC_SYS_LARGEFILE
	160
	161	# Identify characteristics of the host architecture.
	162	AC_C_BIGENDIAN
	163	AC_CHECK_SIZEOF(void *)
	164	AC_CHECK_SIZEOF(long)
	165
2b167a72	166	grub_apple_cc
	167	if test x$grub_cv_apple_cc == xyes ; then
	168	CFLAGS="$CFLAGS -DAPPLE_CC=1 -fnested-functions"
	169	ASFLAGS="$ASFLAGS -DAPPLE_CC=1"
	170	fi
b977bf01	171
	172	# Check LZO when compiling for the i386-pc.
	173	if test "$target_cpu"-"$platform" = i386-pc; then
aa24b516	174	AC_ARG_ENABLE([lzo],
	175	[AS_HELP_STRING([--enable-lzo],
	176	[use lzo to compress kernel (default is lzma)])])
	177	[if [ x"$enable_lzo" = xyes ]; then
	178	# There are three possibilities. LZO version 2 installed with the name
	179	# liblzo2, with the name liblzo, and LZO version 1.]
	180	AC_DEFINE([ENABLE_LZO], [1], [Use lzo compression])
	181	AC_CHECK_LIB([lzo2], [__lzo_init_v2], [LIBLZO="-llzo2"],
	182	[AC_CHECK_LIB([lzo], [__lzo_init_v2], [LIBLZO="-llzo"],
	183	[AC_CHECK_LIB([lzo], [__lzo_init2], [LIBLZO="-llzo"],
	184	[AC_MSG_ERROR([LZO library version 1.02 or later is required])])])])
	185	AC_SUBST([LIBLZO])
	186	[LIBS="$LIBS $LIBLZO"]
	187	AC_CHECK_FUNC([lzo1x_999_compress], ,
b977bf01	188	[AC_MSG_ERROR([LZO1X-999 must be enabled])])
b977bf01	189
aa24b516	190	[# LZO version 2 uses lzo/lzo1x.h, while LZO version 1 uses lzo1x.h.]
	191	AC_CHECK_HEADERS([lzo/lzo1x.h lzo1x.h])
	192	[else]
	193	AC_DEFINE([ENABLE_LZMA], [1], [Use lzma compression])
	194	[fi]
	195	AC_SUBST([enable_lzo])
b977bf01	196	fi
b977bf01	197
4889bdec	198	# Check for functions.
df38d0bb	199	AC_CHECK_FUNCS(posix_memalign memalign asprintf)
4889bdec	200
b977bf01	201	#
	202	# Check for target programs.
	203	#
	204
5b5d4aa5	205	# Find tools for the target.
5b5d4aa5	206	if test "x$target_alias" != x && test "x$host_alias" != "x$target_alias"; then
b977bf01	207	tmp_ac_tool_prefix="$ac_tool_prefix"
	208	ac_tool_prefix=$target_alias-
	209
	210	AC_CHECK_TOOLS(TARGET_CC, [gcc egcs cc],
	211	[AC_MSG_ERROR([none of gcc, egcs and cc is found. set TARGET_CC manually.])])
	212	AC_CHECK_TOOL(OBJCOPY, objcopy)
	213	AC_CHECK_TOOL(STRIP, strip)
	214	AC_CHECK_TOOL(NM, nm)
	215
	216	ac_tool_prefix="$tmp_ac_tool_prefix"
	217	else
	218	if test "x$TARGET_CC" = x; then
	219	TARGET_CC=$CC
	220	fi
	221	AC_CHECK_TOOL(OBJCOPY, objcopy)
	222	AC_CHECK_TOOL(STRIP, strip)
	223	AC_CHECK_TOOL(NM, nm)
	224	fi
	225	AC_SUBST(TARGET_CC)
	226
	227
	228	# Test the C compiler for the target environment.
	229	tmp_CC="$CC"
	230	tmp_CFLAGS="$CFLAGS"
	231	tmp_LDFLAGS="$LDFLAGS"
	232	tmp_CPPFLAGS="$CPPFLAGS"
aa6d7826	233	tmp_LIBS="$LIBS"
b977bf01	234	CC="$TARGET_CC"
	235	CFLAGS="$TARGET_CFLAGS"
	236	CPPFLAGS="$TARGET_CPPFLAGS"
	237	LDFLAGS="$TARGET_LDFLAGS"
aa6d7826	238	LIBS=""
b977bf01	239
b977bf01	240	if test "x$TARGET_CFLAGS" = x; then
6a161fa9	241	# debug flags.
b977bf01	242	TARGET_CFLAGS="-Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes \
b977bf01	243	-Wundef -Wstrict-prototypes -g"
6a161fa9	244
6a161fa9	245	# optimization flags.
322562ea	246	AC_CACHE_CHECK([whether optimization for size works], grub_cv_cc_Os, [
6a161fa9	247	CFLAGS=-Os
eb73121d	248	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
	249	[grub_cv_cc_Os=yes],
	250	[grub_cv_cc_Os=no])
6a161fa9	251	])
322562ea	252	if test "x$grub_cv_cc_Os" = xyes; then
b977bf01	253	TARGET_CFLAGS="$TARGET_CFLAGS -Os"
6a161fa9	254	else
b977bf01	255	TARGET_CFLAGS="$TARGET_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops"
6a161fa9	256	fi
	257
	258	# Force no alignment to save space on i386.
b977bf01	259	if test "x$target_cpu" = xi386; then
322562ea	260	AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [
2b167a72	261	CFLAGS="$CFLAGS -falign-loops=1"
eb73121d	262	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
	263	[grub_cv_cc_falign_loop=yes],
	264	[grub_cv_cc_falign_loop=no])
6a161fa9	265	])
6a161fa9	266
322562ea	267	if test "x$grub_cv_cc_falign_loop" = xyes; then
b977bf01	268	TARGET_CFLAGS="$TARGET_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1"
6a161fa9	269	else
b977bf01	270	TARGET_CFLAGS="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
6a161fa9	271	fi
6a161fa9	272	fi
b977bf01	273	fi
6a161fa9	274
2b167a72	275	grub_apple_target_cc
	276	if test x$grub_cv_apple_target_cc == xyes ; then
	277	TARGET_CFLAGS="$TARGET_CFLAGS -DAPPLE_CC=1 -fnested-functions"
	278	CFLAGS="$CFLAGS -DAPPLE_CC=1 -fnested-functions"
	279	TARGET_ASFLAGS="$TARGET_ASFLAGS -DAPPLE_CC=1"
	280	TARGET_APPLE_CC=1
cf00df31	281	AC_CHECK_PROG([OBJCONV], [objconv], [objconv], [])
	282	if test "x$OBJCONV" = x ; then
	283	AC_CHECK_PROG([OBJCONV], [objconv], [./objconv], [], [.])
	284	fi
	285	if test "x$OBJCONV" = x ; then
	286	AC_MSG_ERROR([objconv not found which is required when building with apple compiler])
	287	fi
2b167a72	288	TARGET_IMG_LDSCRIPT=
	289	TARGET_IMG_CFLAGS="-static"
	290	TARGET_IMG_LDFLAGS='-nostdlib -static -Wl,-preload -Wl,-segalign,20 -Wl,-image_base,'
	291	TARGET_IMG_LDFLAGS_AC='-nostdlib -static -Wl,-preload -Wl,-segalign,20 -Wl,-image_base,'
	292	else
	293	TARGET_APPLE_CC=0
	294	# Use linker script if present, otherwise use builtin -N script.
	295	AC_MSG_CHECKING([for option to link raw image])
	296	if test -f "${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"; then
	297	TARGET_IMG_LDSCRIPT='$(top_srcdir)'"/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
	298	TARGET_IMG_LDFLAGS="-Wl,-T${TARGET_IMG_LDSCRIPT} -Wl,-Ttext,"
	299	TARGET_IMG_LDFLAGS_AC="-Wl,-T${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
	300	else
	301	TARGET_IMG_LDSCRIPT=
	302	TARGET_IMG_LDFLAGS='-Wl,-N -Wl,-Ttext,'
	303	TARGET_IMG_LDFLAGS_AC='-Wl,-N -Wl,-Ttext,'
	304	fi
	305	TARGET_IMG_CFLAGS=
	306	fi
	307
	308	AC_SUBST(TARGET_IMG_LDSCRIPT)
	309	AC_SUBST(TARGET_IMG_LDFLAGS)
	310	AC_SUBST(TARGET_IMG_CFLAGS)
	311	AC_MSG_RESULT([$TARGET_IMG_LDFLAGS_AC])
	312
	313	# For platforms where ELF is not the default link format.
	314	AC_MSG_CHECKING([for command to convert module to ELF format])
	315	case "${host_os}" in
	316	cygwin) TARGET_OBJ2ELF='grub-pe2elf' ;;
	317	*) ;;
	318	esac
	319	AC_SUBST(TARGET_OBJ2ELF)
	320	AC_MSG_RESULT([$TARGET_OBJ2ELF])
	321
	322
b977bf01	323	if test "x$target_m32" = x1; then
	324	# Force 32-bit mode.
	325	TARGET_CFLAGS="$TARGET_CFLAGS -m32"
	326	TARGET_LDFLAGS="$TARGET_LDFLAGS -m32"
2b167a72	327	TARGET_MODULE_FORMAT="elf32"
6a161fa9	328	fi
b977bf01	329
20011694	330	if test "x$target_m64" = x1; then
20011694	331	# Force 64-bit mode.
7e9ca17a	332	TARGET_CFLAGS="$TARGET_CFLAGS -m64"
7e9ca17a	333	TARGET_LDFLAGS="$TARGET_LDFLAGS -m64"
2b167a72	334	TARGET_MODULE_FORMAT="elf64"
7e9ca17a	335	fi
	336
	337	if test "$target_cpu"-"$platform" = x86_64-efi; then
	338	# Use large model to support 4G memory
6e09b8b7	339	AC_CACHE_CHECK([whether option -mcmodel=large works], grub_cv_cc_mcmodel, [
c8600122	340	SAVED_CFLAGS=$CFLAGS
c8600122	341	CFLAGS="$CFLAGS -m64 -mcmodel=large"
6e09b8b7	342	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
	343	[grub_cv_cc_mcmodel=yes],
	344	[grub_cv_cc_mcmodel=no])
	345	])
c8600122	346	if test "x$grub_cv_cc_mcmodel" = xno; then
c8600122	347	CFLAGS="$SAVED_CFLAGS -m64 -DMCMODEL_SMALL=1"
b39f9d20	348	TARGET_CFLAGS="$TARGET_CFLAGS -DMCMODEL_SMALL=1"
c8600122	349	AC_MSG_WARN([-mcmodel=large not supported. You wan't be able to use the memory over 4GiB. Upgrade your gcc])
	350	else
	351	TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=large"
6e09b8b7	352	fi
7e9ca17a	353
	354	# EFI writes to stack below %rsp, we must not use the red zone
	355	AC_CACHE_CHECK([whether option -mno-red-zone works], grub_cv_cc_no_red_zone, [
c8600122	356	CFLAGS="$CFLAGS -m64 -mno-red-zone"
7e9ca17a	357	AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
	358	[grub_cv_cc_no_red_zone=yes],
	359	[grub_cv_cc_no_red_zone=no])
	360	])
	361	if test "x$grub_cv_cc_no_red_zone" = xno; then
	362	AC_MSG_ERROR([-mno-red-zone not supported, upgrade your gcc])
	363	fi
	364
c8600122	365	TARGET_CFLAGS="$TARGET_CFLAGS -mno-red-zone"
20011694	366	fi
20011694	367
baa2a121	368	#
	369	# Compiler features.
	370	#
	371
9035dce4	372	# Need __enable_execute_stack() for nested function trampolines?
	373	grub_CHECK_ENABLE_EXECUTE_STACK
	374
baa2a121	375	# Smashing stack protector.
baa2a121	376	grub_CHECK_STACK_PROTECTOR
c3db8364	377	# Need that, because some distributions ship compilers that include
baa2a121	378	# `-fstack-protector' in the default specs.
c3db8364	379	if test "x$ssp_possible" = xyes; then
	380	TARGET_CFLAGS="$TARGET_CFLAGS -fno-stack-protector"
	381	fi
2a8a80e4	382	grub_CHECK_STACK_ARG_PROBE
	383	# Cygwin's GCC uses alloca() to probe the stackframe on static
	384	# stack allocations above some threshold.
	385	if test x"$sap_possible" = xyes; then
	386	TARGET_CFLAGS="$TARGET_CFLAGS -mno-stack-arg-probe"
	387	fi
baa2a121	388
b977bf01	389	AC_SUBST(TARGET_CFLAGS)
2b167a72	390	AC_SUBST(TARGET_MODULE_FORMAT)
cf00df31	391	AC_SUBST(OBJCONV)
2b167a72	392	AC_SUBST(TARGET_APPLE_CC)
2b167a72	393	AC_SUBST(TARGET_ASFLAGS)
b977bf01	394	AC_SUBST(TARGET_CPPFLAGS)
b977bf01	395	AC_SUBST(TARGET_LDFLAGS)
6a161fa9	396
aa6d7826	397	# Set them to their new values for the tests below.
aa6d7826	398	CC="$TARGET_CC"
437e6adc	399	CFLAGS="$TARGET_CFLAGS -nostdlib"
aa6d7826	400	CPPFLAGS="$TARGET_CPPFLAGS"
	401	LDFLAGS="$TARGET_LDFLAGS"
	402
6a161fa9	403	# Defined in aclocal.m4.
f6130a12	404	grub_PROG_TARGET_CC
2b167a72	405	if test "x$TARGET_APPLE_CC" != x1 ; then
b977bf01	406	grub_PROG_OBJCOPY_ABSOLUTE
2b167a72	407	fi
cb71ba20	408	grub_PROG_LD_BUILD_ID_NONE
4b13b216	409	grub_ASM_USCORE
b977bf01	410	if test "x$target_cpu" = xi386; then
2a8a80e4	411	if test ! -z "$TARGET_IMG_LDSCRIPT"; then
	412	# Check symbols provided by linker script.
	413	CFLAGS="$TARGET_CFLAGS -nostdlib $TARGET_IMG_LDFLAGS_AC -Wl,-Ttext,8000,--defsym,___main=0x8100"
	414	fi
2b167a72	415	if test "x$platform" = xpc && test "x$TARGET_APPLE_CC" != x1 ; then
2a8a80e4	416	grub_CHECK_BSS_START_SYMBOL
	417	grub_CHECK_END_SYMBOL
	418	fi
	419	CFLAGS="$TARGET_CFLAGS"
4b13b216	420	grub_I386_ASM_PREFIX_REQUIREMENT
	421	grub_I386_ASM_ADDR32
	422	grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK
5aded270	423	else
f4917dfd	424	AC_DEFINE([NESTED_FUNC_ATTR], [], [Catch gcc bug])
6a161fa9	425	fi
6a161fa9	426
bf6a5fb2	427	AH_BOTTOM([#if defined(__i386__) && !defined(GRUB_UTIL)
	428	#define NESTED_FUNC_ATTR __attribute__ ((__regparm__ (1)))
	429	#else
	430	#define NESTED_FUNC_ATTR
	431	#endif])
	432
c9a86192	433	# Restore the flags.
9962ed99	434	CC="$tmp_CC"
	435	CFLAGS="$tmp_CFLAGS"
	436	CPPFLAGS="$tmp_CPPFLAGS"
c9a86192	437	LDFLAGS="$tmp_LDFLAGS"
aa6d7826	438	LIBS="$tmp_LIBS"
6a161fa9	439
4fe9862e	440	#
2965c7cc	441	# Check for options.
4fe9862e	442	#
	443
	444	# Memory manager debugging.
b39f9d20	445	AC_ARG_ENABLE([mm-debug],
2965c7cc	446	AS_HELP_STRING([--enable-mm-debug],
90ce5d56	447	[include memory manager debugging]),
2965c7cc	448	[AC_DEFINE([MM_DEBUG], [1],
	449	[Define to 1 if you enable memory manager debugging.])])
	450
4fe9862e	451	AC_ARG_ENABLE([grub-emu],
	452	[AS_HELP_STRING([--enable-grub-emu],
	453	[build and install the `grub-emu' debugging utility])])
d64399b5	454	AC_ARG_ENABLE([grub-emu-usb],
	455	[AS_HELP_STRING([--enable-grub-emu-usb],
	456	[build and install the `grub-emu' debugging utility with USB support])])
4fe9862e	457	[if [ x"$enable_grub_emu" = xyes ]; then
	458	# Check for curses libraries.]
	459	AC_CHECK_LIB([ncurses], [wgetch], [LIBCURSES="-lncurses"],
	460	[AC_CHECK_LIB([curses], [wgetch], [LIBCURSES="-lcurses"],
	461	[AC_MSG_ERROR([(n)curses libraries are required to build `grub-emu'])])])
	462	AC_SUBST([LIBCURSES])
	463
	464	[# Check for headers.]
	465	AC_CHECK_HEADERS([ncurses/curses.h], [],
	466	[AC_CHECK_HEADERS([ncurses.h], [],
	467	[AC_CHECK_HEADERS([curses.h], [],
	468	[AC_MSG_ERROR([(n)curses header files are required to build `grub-emu'])])])])
d64399b5	469
	470	[if [ x"$enable_grub_emu_usb" = xyes ]; then
	471	# Check for libusb libraries.]
	472	AC_CHECK_LIB([usb], [usb_claim_interface], [LIBUSB="-lusb"],
	473	[AC_MSG_ERROR([libusb libraries are required to build `grub-emu' with USB support])])
	474	AC_SUBST([LIBUSB])
	475
	476	[# Check for headers.]
	477	AC_CHECK_HEADERS([usb.h], [],
	478	[AC_MSG_ERROR([libusb header file is required to build `grub-emu' with USB support])])
	479	[fi]
4fe9862e	480	[fi]
4fe9862e	481	AC_SUBST([enable_grub_emu])
d64399b5	482	AC_SUBST([enable_grub_emu_usb])
4fe9862e	483
99fadbaa	484	AC_ARG_ENABLE([grub-fstest],
	485	[AS_HELP_STRING([--enable-grub-fstest],
	486	[build and install the `grub-fstest' debugging utility])])
	487	AC_SUBST([enable_grub_fstest])
	488
2d05bc6a	489	AC_ARG_ENABLE([grub-pe2elf],
	490	[AS_HELP_STRING([--enable-grub-pe2elf],
	491	[build and install the `grub-pe2elf' conversion utility])])
	492	AC_SUBST([enable_grub_pe2elf])
	493
e52db1f7	494	AC_ARG_ENABLE([grub-mkfont],
	495	[AS_HELP_STRING([--enable-grub-mkfont],
	496	[build and install the `grub-mkfont' utility])])
	497	if test x"$enable_grub_mkfont" = xyes ; then
	498	# Check for freetype libraries.
	499	AC_CHECK_PROGS([FREETYPE], [freetype-config])
	500	if test "x$FREETYPE" = x ; then
	501	AC_MSG_ERROR([freetype2 libraries are required to build `grub-mkfont'])
	502	fi
	503	freetype_cflags=`freetype-config --cflags`
	504	freetype_libs=`freetype-config --libs`
	505	fi
	506	AC_SUBST([enable_grub_mkfont])
	507	AC_SUBST([freetype_cflags])
	508	AC_SUBST([freetype_libs])
	509
fc45fb58	510	AC_ARG_ENABLE([efiemu],
	511	[AS_HELP_STRING([--enable-efiemu],
	512	[build and install the efiemu runtimes])])
	513	AC_SUBST([enable_efiemu])
2b167a72	514	AC_SUBST(ASFLAGS)
fc45fb58	515
6a161fa9	516	# Output files.
1f4147aa	517	grub_CHECK_LINK_DIR
	518	if test x"$link_dir" = xyes ; then
	519	AC_CONFIG_LINKS([include/grub/cpu:include/grub/$target_cpu
b977bf01	520	include/grub/machine:include/grub/$target_cpu/$platform])
1f4147aa	521	else
	522	mkdir -p include/grub 2>/dev/null
	523	rm -rf include/grub/cpu
	524	cp -rp $srcdir/include/grub/$target_cpu include/grub/cpu 2>/dev/null
	525	rm -rf include/grub/machine
	526	cp -rp $srcdir/include/grub/$target_cpu/$platform include/grub/machine 2>/dev/null
	527	fi
7b455f4d	528	AC_CONFIG_FILES([Makefile gensymlist.sh genkernsyms.sh])
6a161fa9	529	AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
6a161fa9	530	AC_OUTPUT