5b5d4aa5f0
* configure.ac: Change the logic when we check for target tools.
Do it when the target is specified and it's different from the
specified value of the host.
487 lines
14 KiB
Text
487 lines
14 KiB
Text
# Process this file with autoconf to produce a configure script.
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# Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
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#
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# This configure.ac is free software; the author
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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# PARTICULAR PURPOSE.
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dnl This configure script is complicated, because GRUB needs to deal
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dnl with three potentially different types:
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dnl
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dnl build -- the environment for building GRUB
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dnl host -- the environment for running utilities
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dnl target -- the environment for running GRUB
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dnl
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dnl In addition, GRUB needs to deal with a platform specification
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dnl which specifies the system running GRUB, such as firmware.
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dnl This is necessary because the target type in autoconf does not
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dnl describe such a system very well.
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dnl
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dnl The current strategy is to use variables with no prefix (such as
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dnl CC, CFLAGS, etc.) for the host type as well as the build type,
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dnl because GRUB does not need to use those variables for the build
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dnl type, so there is no conflict. Variables with the prefix "TARGET_"
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dnl (such as TARGET_CC, TARGET_CFLAGS, etc.) are used for the target
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dnl type.
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AC_INIT([GRUB],[1.96],[bug-grub@gnu.org])
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AC_PREREQ(2.59)
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AC_CONFIG_SRCDIR([include/grub/dl.h])
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AC_CONFIG_HEADER([config.h])
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# Checks for host and target systems.
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AC_CANONICAL_HOST
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AC_CANONICAL_TARGET
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# Program name transformations
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AC_ARG_PROGRAM
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case "$host_cpu" in
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powerpc64) host_m32=1 ;;
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esac
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case "$target_cpu" in
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i[[3456]]86) target_cpu=i386 ;;
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esac
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# Specify the platform (such as firmware).
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AC_ARG_WITH([platform],
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AS_HELP_STRING([--with-platform=PLATFORM],
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[select the host platform [[guessed]]]))
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# Guess the platform if not specified.
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if test "x$with_platform" = x; then
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case "$target_cpu"-"$target_vendor" in
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i386-apple) platform=efi ;;
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i386-*) platform=pc ;;
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x86_64-apple) platform=efi ;;
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x86_64-*) platform=pc ;;
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powerpc-*) platform=ieee1275 ;;
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powerpc64-*) platform=ieee1275 ;;
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sparc64-*) platform=ieee1275 ;;
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*) AC_MSG_ERROR([unsupported CPU: "$target_cpu"]) ;;
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esac
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else
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platform="$with_platform"
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fi
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# Adjust CPU unless target was explicitly specified.
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if test -z "$target_alias"; then
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case "$target_cpu"-"$platform" in
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x86_64-efi) ;;
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x86_64-*) target_cpu=i386 ;;
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powerpc64-ieee1275) target_cpu=powerpc ;;
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esac
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fi
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# Check if the platform is supported, make final adjustments.
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case "$target_cpu"-"$platform" in
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i386-efi) ;;
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x86_64-efi) ;;
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i386-pc) ;;
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i386-coreboot) ;;
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i386-linuxbios) platform=coreboot ;;
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i386-ieee1275) ;;
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powerpc-ieee1275) ;;
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sparc64-ieee1275) ;;
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*) AC_MSG_ERROR([platform "$platform" is not supported for target CPU "$target_cpu"]) ;;
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esac
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case "$target_cpu" in
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i386 | powerpc) target_m32=1 ;;
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x86_64 | sparc64) target_m64=1 ;;
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esac
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case "$host_os" in
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mingw32) host_os=cygwin ;;
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esac
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# This normalizes the names, and creates a new variable ("host_kernel")
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# while at it, since the mapping is not always 1:1 (e.g. different OSes
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# using the same kernel type).
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case "$host_os" in
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gnu*) host_kernel=hurd ;;
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linux*) host_kernel=linux ;;
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freebsd* | kfreebsd*-gnu) host_kernel=freebsd ;;
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cygwin) host_kernel=windows ;;
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esac
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AC_SUBST(host_cpu)
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AC_SUBST(host_os)
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AC_SUBST(host_kernel)
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AC_SUBST(target_cpu)
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AC_SUBST(platform)
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#
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# Checks for build programs.
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#
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# Although cmp is listed in the GNU Coding Standards as a command which
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# can used directly, OpenBSD lacks cmp in the default installation.
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AC_CHECK_PROGS([CMP], [cmp])
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if test "x$CMP" = x; then
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AC_MSG_ERROR([cmp is not found])
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fi
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AC_CHECK_PROGS([YACC], [bison])
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if test "x$YACC" = x; then
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AC_MSG_ERROR([bison is not found])
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fi
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for file in /usr/src/unifont.bdf ; do
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if test -e $file ; then
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AC_SUBST([UNIFONT_BDF], [$file])
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break
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fi
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done
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AC_PROG_INSTALL
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AC_PROG_AWK
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AC_PROG_MAKE_SET
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# These are not a "must".
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AC_PATH_PROG(RUBY, ruby)
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AC_PATH_PROG(HELP2MAN, help2man)
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#
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# Checks for host programs.
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#
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AC_PROG_CC
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# Must be GCC.
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test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required])
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AC_GNU_SOURCE
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AC_SYS_LARGEFILE
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# Identify characteristics of the host architecture.
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AC_C_BIGENDIAN
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AC_CHECK_SIZEOF(void *)
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AC_CHECK_SIZEOF(long)
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if test "x$host_m32" = x1; then
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# Force 32-bit mode.
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CFLAGS="$CFLAGS -m32"
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LDFLAGS="$LDFLAGS -m32"
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fi
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# Check LZO when compiling for the i386-pc.
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if test "$target_cpu"-"$platform" = i386-pc; then
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AC_ARG_ENABLE([lzo],
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[AS_HELP_STRING([--enable-lzo],
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[use lzo to compress kernel (default is lzma)])])
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[if [ x"$enable_lzo" = xyes ]; then
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# There are three possibilities. LZO version 2 installed with the name
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# liblzo2, with the name liblzo, and LZO version 1.]
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AC_DEFINE([ENABLE_LZO], [1], [Use lzo compression])
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AC_CHECK_LIB([lzo2], [__lzo_init_v2], [LIBLZO="-llzo2"],
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[AC_CHECK_LIB([lzo], [__lzo_init_v2], [LIBLZO="-llzo"],
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[AC_CHECK_LIB([lzo], [__lzo_init2], [LIBLZO="-llzo"],
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[AC_MSG_ERROR([LZO library version 1.02 or later is required])])])])
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AC_SUBST([LIBLZO])
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[LIBS="$LIBS $LIBLZO"]
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AC_CHECK_FUNC([lzo1x_999_compress], ,
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[AC_MSG_ERROR([LZO1X-999 must be enabled])])
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[# LZO version 2 uses lzo/lzo1x.h, while LZO version 1 uses lzo1x.h.]
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AC_CHECK_HEADERS([lzo/lzo1x.h lzo1x.h])
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[else]
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AC_DEFINE([ENABLE_LZMA], [1], [Use lzma compression])
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[fi]
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AC_SUBST([enable_lzo])
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fi
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# Check for functions.
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AC_CHECK_FUNCS(posix_memalign memalign asprintf __bswapsi2 __bswapdi2)
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#
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# Check for target programs.
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#
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# Use linker script if present, otherwise use builtin -N script.
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AC_MSG_CHECKING([for option to link raw image])
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if test -f "${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"; then
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TARGET_IMG_LDSCRIPT='$(top_srcdir)'"/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
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TARGET_IMG_LDFLAGS="-Wl,-T${TARGET_IMG_LDSCRIPT}"
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TARGET_IMG_LDFLAGS_AC="-Wl,-T${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
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else
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TARGET_IMG_LDSCRIPT=
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TARGET_IMG_LDFLAGS='-Wl,-N'
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TARGET_IMG_LDFLAGS_AC='-Wl,-N'
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fi
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AC_SUBST(TARGET_IMG_LDSCRIPT)
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AC_SUBST(TARGET_IMG_LDFLAGS)
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AC_MSG_RESULT([$TARGET_IMG_LDFLAGS_AC])
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# For platforms where ELF is not the default link format.
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AC_MSG_CHECKING([for command to convert module to ELF format])
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case "${host_os}" in
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cygwin) TARGET_OBJ2ELF='grub-pe2elf' ;;
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*) ;;
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esac
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AC_SUBST(TARGET_OBJ2ELF)
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AC_MSG_RESULT([$TARGET_OBJ2ELF])
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# Find tools for the target.
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if test "x$target_alias" != x && test "x$host_alias" != "x$target_alias"; then
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tmp_ac_tool_prefix="$ac_tool_prefix"
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ac_tool_prefix=$target_alias-
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AC_CHECK_TOOLS(TARGET_CC, [gcc egcs cc],
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[AC_MSG_ERROR([none of gcc, egcs and cc is found. set TARGET_CC manually.])])
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AC_CHECK_TOOL(OBJCOPY, objcopy)
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AC_CHECK_TOOL(STRIP, strip)
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AC_CHECK_TOOL(NM, nm)
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ac_tool_prefix="$tmp_ac_tool_prefix"
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else
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if test "x$TARGET_CC" = x; then
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TARGET_CC=$CC
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fi
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AC_CHECK_TOOL(OBJCOPY, objcopy)
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AC_CHECK_TOOL(STRIP, strip)
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AC_CHECK_TOOL(NM, nm)
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fi
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AC_SUBST(TARGET_CC)
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# Test the C compiler for the target environment.
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tmp_CC="$CC"
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tmp_CFLAGS="$CFLAGS"
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tmp_LDFLAGS="$LDFLAGS"
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tmp_CPPFLAGS="$CPPFLAGS"
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tmp_LIBS="$LIBS"
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CC="$TARGET_CC"
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CFLAGS="$TARGET_CFLAGS"
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CPPFLAGS="$TARGET_CPPFLAGS"
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LDFLAGS="$TARGET_LDFLAGS"
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LIBS=""
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if test "x$TARGET_CFLAGS" = x; then
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# debug flags.
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TARGET_CFLAGS="-Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes \
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-Wundef -Wstrict-prototypes -g"
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# optimization flags.
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AC_CACHE_CHECK([whether optimization for size works], grub_cv_cc_Os, [
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CFLAGS=-Os
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
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[grub_cv_cc_Os=yes],
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[grub_cv_cc_Os=no])
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])
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if test "x$grub_cv_cc_Os" = xyes; then
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TARGET_CFLAGS="$TARGET_CFLAGS -Os"
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else
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TARGET_CFLAGS="$TARGET_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops"
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fi
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# Force no alignment to save space on i386.
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if test "x$target_cpu" = xi386; then
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AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [
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CFLAGS="-falign-loops=1"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
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[grub_cv_cc_falign_loop=yes],
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[grub_cv_cc_falign_loop=no])
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])
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if test "x$grub_cv_cc_falign_loop" = xyes; then
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TARGET_CFLAGS="$TARGET_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1"
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else
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TARGET_CFLAGS="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
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fi
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fi
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fi
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if test "x$target_m32" = x1; then
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# Force 32-bit mode.
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TARGET_CFLAGS="$TARGET_CFLAGS -m32"
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TARGET_LDFLAGS="$TARGET_LDFLAGS -m32"
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fi
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if test "x$target_m64" = x1; then
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# Force 64-bit mode.
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TARGET_CFLAGS="$TARGET_CFLAGS -m64"
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TARGET_LDFLAGS="$TARGET_LDFLAGS -m64"
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fi
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if test "$target_cpu"-"$platform" = x86_64-efi; then
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# Use large model to support 4G memory
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AC_CACHE_CHECK([whether option -mcmodel=large works], grub_cv_cc_mcmodel, [
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CFLAGS="-m64 -mcmodel=large"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
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[grub_cv_cc_mcmodel=yes],
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[grub_cv_cc_mcmodel=no])
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])
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if test "x$grub_cv_cc_no_mcmodel" = xno; then
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AC_MSG_ERROR([-mcmodel=large not supported, upgrade your gcc])
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fi
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# EFI writes to stack below %rsp, we must not use the red zone
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AC_CACHE_CHECK([whether option -mno-red-zone works], grub_cv_cc_no_red_zone, [
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CFLAGS="-m64 -mno-red-zone"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
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[grub_cv_cc_no_red_zone=yes],
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[grub_cv_cc_no_red_zone=no])
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])
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if test "x$grub_cv_cc_no_red_zone" = xno; then
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AC_MSG_ERROR([-mno-red-zone not supported, upgrade your gcc])
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fi
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TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=large -mno-red-zone"
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fi
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#
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# Compiler features.
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#
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# Need __enable_execute_stack() for nested function trampolines?
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grub_CHECK_ENABLE_EXECUTE_STACK
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# Smashing stack protector.
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grub_CHECK_STACK_PROTECTOR
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# Need that, because some distributions ship compilers that include
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# `-fstack-protector' in the default specs.
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if test "x$ssp_possible" = xyes; then
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TARGET_CFLAGS="$TARGET_CFLAGS -fno-stack-protector"
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fi
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grub_CHECK_STACK_ARG_PROBE
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# Cygwin's GCC uses alloca() to probe the stackframe on static
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# stack allocations above some threshold.
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if test x"$sap_possible" = xyes; then
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TARGET_CFLAGS="$TARGET_CFLAGS -mno-stack-arg-probe"
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fi
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AC_SUBST(TARGET_CFLAGS)
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AC_SUBST(TARGET_CPPFLAGS)
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AC_SUBST(TARGET_LDFLAGS)
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# Set them to their new values for the tests below.
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CC="$TARGET_CC"
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CFLAGS="$TARGET_CFLAGS"
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CPPFLAGS="$TARGET_CPPFLAGS"
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LDFLAGS="$TARGET_LDFLAGS"
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# Defined in aclocal.m4.
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grub_PROG_TARGET_CC
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grub_PROG_OBJCOPY_ABSOLUTE
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grub_PROG_LD_BUILD_ID_NONE
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grub_ASM_USCORE
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if test "x$target_cpu" = xi386; then
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if test ! -z "$TARGET_IMG_LDSCRIPT"; then
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# Check symbols provided by linker script.
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CFLAGS="$TARGET_CFLAGS -nostdlib $TARGET_IMG_LDFLAGS_AC -Wl,-Ttext,8000,--defsym,___main=0x8100"
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fi
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if test "x$platform" = xpc; then
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grub_CHECK_BSS_START_SYMBOL
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grub_CHECK_END_SYMBOL
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fi
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CFLAGS="$TARGET_CFLAGS"
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grub_I386_ASM_PREFIX_REQUIREMENT
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grub_I386_ASM_ADDR32
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grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK
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grub_I386_CHECK_REGPARM_BUG
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else
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AC_DEFINE([NESTED_FUNC_ATTR], [], [Catch gcc bug])
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fi
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# Restore the flags.
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CC="$tmp_CC"
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CFLAGS="$tmp_CFLAGS"
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CPPFLAGS="$tmp_CPPFLAGS"
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LDFLAGS="$tmp_LDFLAGS"
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LIBS="$tmp_LIBS"
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#
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# Check for options.
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#
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# Memory manager debugging.
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AC_ARG_ENABLE([mm-debug],
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AS_HELP_STRING([--enable-mm-debug],
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[include memory manager debugging]),
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[AC_DEFINE([MM_DEBUG], [1],
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[Define to 1 if you enable memory manager debugging.])])
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AC_ARG_ENABLE([grub-emu],
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[AS_HELP_STRING([--enable-grub-emu],
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[build and install the `grub-emu' debugging utility])])
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AC_ARG_ENABLE([grub-emu-usb],
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[AS_HELP_STRING([--enable-grub-emu-usb],
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[build and install the `grub-emu' debugging utility with USB support])])
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[if [ x"$enable_grub_emu" = xyes ]; then
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# Check for curses libraries.]
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AC_CHECK_LIB([ncurses], [wgetch], [LIBCURSES="-lncurses"],
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[AC_CHECK_LIB([curses], [wgetch], [LIBCURSES="-lcurses"],
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[AC_MSG_ERROR([(n)curses libraries are required to build `grub-emu'])])])
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AC_SUBST([LIBCURSES])
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[# Check for headers.]
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AC_CHECK_HEADERS([ncurses/curses.h], [],
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[AC_CHECK_HEADERS([ncurses.h], [],
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[AC_CHECK_HEADERS([curses.h], [],
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[AC_MSG_ERROR([(n)curses header files are required to build `grub-emu'])])])])
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[if [ x"$enable_grub_emu_usb" = xyes ]; then
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# Check for libusb libraries.]
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AC_CHECK_LIB([usb], [usb_claim_interface], [LIBUSB="-lusb"],
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[AC_MSG_ERROR([libusb libraries are required to build `grub-emu' with USB support])])
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AC_SUBST([LIBUSB])
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[# Check for headers.]
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AC_CHECK_HEADERS([usb.h], [],
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[AC_MSG_ERROR([libusb header file is required to build `grub-emu' with USB support])])
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[fi]
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[fi]
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AC_SUBST([enable_grub_emu])
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AC_SUBST([enable_grub_emu_usb])
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AC_ARG_ENABLE([grub-fstest],
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[AS_HELP_STRING([--enable-grub-fstest],
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[build and install the `grub-fstest' debugging utility])])
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AC_SUBST([enable_grub_fstest])
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AC_ARG_ENABLE([grub-pe2elf],
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[AS_HELP_STRING([--enable-grub-pe2elf],
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[build and install the `grub-pe2elf' conversion utility])])
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AC_SUBST([enable_grub_pe2elf])
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AC_ARG_ENABLE([grub-mkfont],
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[AS_HELP_STRING([--enable-grub-mkfont],
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[build and install the `grub-mkfont' utility])])
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if test x"$enable_grub_mkfont" = xyes ; then
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# Check for freetype libraries.
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AC_CHECK_PROGS([FREETYPE], [freetype-config])
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if test "x$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])
|
|
|
|
# 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
|