# 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],[1.97~beta3],[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 "$target_cpu" in i[[3456]]86) target_cpu=i386 ;; sparc) target_cpu=sparc64 ;; esac # Specify the platform (such as firmware). AC_ARG_WITH([platform], AS_HELP_STRING([--with-platform=PLATFORM], [select the host platform [[guessed]]])) # Guess the platform if not specified. if test "x$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"-"$platform" in i386-efi) ;; x86_64-efi) ;; i386-pc) ;; i386-coreboot) ;; i386-linuxbios) platform=coreboot ;; i386-ieee1275) ;; i386-qemu) ;; powerpc-ieee1275) ;; sparc64-ieee1275) ;; *) AC_MSG_ERROR([platform "$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) # # 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 if test "x$cross_compiling" = xyes; then AC_MSG_WARN([cannot generate manual pages while cross compiling]) else AC_PATH_PROG(HELP2MAN, help2man) fi # Check for functions. AC_CHECK_FUNCS(posix_memalign memalign asprintf) # # Check for target programs. # # Find tools for the target. if test "x$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="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1" fi fi # By default, GCC 4.4 generates .eh_frame sections containing unwind # information in some cases where it previously did not. GRUB doesn't need # these and they just use up vital space. Restore the old compiler # behaviour. AC_CACHE_CHECK([whether -fno-dwarf2-cfi-asm works], [grub_cv_cc_fno_dwarf2_cfi_asm], [ SAVE_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -fno-dwarf2-cfi-asm" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], [grub_cv_cc_fno_dwarf2_cfi_asm=yes], [grub_cv_cc_fno_dwarf2_cfi_asm=no]) CFLAGS="$SAVE_CFLAGS" ]) if test "x$grub_cv_cc_fno_dwarf2_cfi_asm" = xyes; then TARGET_CFLAGS="$TARGET_CFLAGS -fno-dwarf2-cfi-asm" 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. 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}-${host_os}-img-ld.sc" else TARGET_IMG_LDSCRIPT= TARGET_IMG_LDFLAGS='-Wl,-N -Wl,-Ttext,' TARGET_IMG_LDFLAGS_AC='-Wl,-N -Wl,-Ttext,' fi TARGET_IMG_CFLAGS= fi AC_SUBST(TARGET_IMG_LDSCRIPT) AC_SUBST(TARGET_IMG_LDFLAGS) AC_SUBST(TARGET_IMG_CFLAGS) # For platforms where ELF is not the default link format. AC_MSG_CHECKING([for command to convert module to ELF format]) case "${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 won'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 # Position independent executable. grub_CHECK_PIE [# Need that, because some distributions ship compilers that include # `-fPIE' in the default specs. if [ x"$pie_possible" = xyes ]; then TARGET_CFLAGS="$TARGET_CFLAGS -fno-PIE" fi] # 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="$TARGET_CC" if test "x$TARGET_APPLE_CC" = x1 ; then CFLAGS="$TARGET_CFLAGS -nostdlib" else CFLAGS="$TARGET_CFLAGS -nostdlib -Wl,--defsym,___main=0x8100" fi 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 $TARGET_IMG_LDFLAGS_AC -Wl,-Ttext,8000,--defsym,___main=0x8100" fi if test "x$TARGET_APPLE_CC" != x1 ; then grub_CHECK_BSS_START_SYMBOL grub_CHECK_END_SYMBOL fi CFLAGS="$TARGET_CFLAGS" grub_I386_ASM_PREFIX_REQUIREMENT grub_I386_ASM_ADDR32 grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK else AC_DEFINE([NESTED_FUNC_ATTR], [], [Catch gcc bug]) fi AH_BOTTOM([#if defined(__i386__) && !defined(GRUB_UTIL) #define NESTED_FUNC_ATTR __attribute__ ((__regparm__ (1))) #else #define NESTED_FUNC_ATTR #endif]) AC_ARG_ENABLE([efiemu], [AS_HELP_STRING([--enable-efiemu], [build and install the efiemu runtimes (default=guessed)])]) if test x"$enable_efiemu" = xno ; then efiemu_excuse="explicitly disabled" fi if test x"$efiemu_excuse" = x ; then AC_CACHE_CHECK([whether options required for efiemu work], grub_cv_cc_efiemu, [ CFLAGS="$CFLAGS -m64 -mcmodel=large -mno-red-zone -nostdlib" AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], [grub_cv_cc_efiemu=yes], [grub_cv_cc_efiemu=no]) ]) if test x$grub_cv_cc_efiemu = xno; then efiemu_excuse="cannot compile with -m64 -mcmodel=large -mno-red-zone -nostdlib" fi fi if test x"$enable_efiemu" = xyes && test x"$efiemu_excuse" != x ; then AC_MSG_ERROR([efiemu runtime was explicitly requested but can't be compiled]) fi if test x"$efiemu_excuse" = x ; then enable_efiemu=yes else enable_efiemu=no fi AC_SUBST([enable_efiemu]) # Restore the flags. CC="$tmp_CC" CFLAGS="$tmp_CFLAGS" CPPFLAGS="$tmp_CPPFLAGS" LDFLAGS="$tmp_LDFLAGS" LIBS="$tmp_LIBS" # # Check for options. # # Memory manager debugging. AC_ARG_ENABLE([mm-debug], AS_HELP_STRING([--enable-mm-debug], [include memory manager debugging]), [AC_DEFINE([MM_DEBUG], [1], [Define to 1 if you enable memory manager debugging.])]) AC_ARG_ENABLE([grub-emu], [AS_HELP_STRING([--enable-grub-emu], [build and install the `grub-emu' debugging utility (default=guessed)])]) AC_ARG_ENABLE([grub-emu-usb], [AS_HELP_STRING([--enable-grub-emu-usb], [build and install the `grub-emu' debugging utility with USB support (default=guessed)])]) if test x"$enable_grub_emu" = xno ; then grub_emu_excuse="explicitly disabled" fi [# Check for curses libraries.] [if [ x"$grub_emu_excuse" = x ]; then ] AC_CHECK_LIB([ncurses], [wgetch], [LIBCURSES="-lncurses"], [AC_CHECK_LIB([curses], [wgetch], [LIBCURSES="-lcurses"], [grub_emu_excuse=["need (n)curses libraries"]])]) AC_SUBST([LIBCURSES]) [fi] [if [ x"$grub_emu_excuse" = x ]; then ] [# Check for headers.] AC_CHECK_HEADERS([ncurses/curses.h], [], [AC_CHECK_HEADERS([ncurses.h], [], [AC_CHECK_HEADERS([curses.h], [], [grub_emu_excuse=["need (n)curses headers"]])])]) [fi] if test x"$enable_grub_emu" = xyes && test x"$grub_emu_excuse" != x ; then AC_MSG_ERROR([grub-emu was explicitly requested but can't be compiled]) fi if test x"$grub_emu_excuse" = x ; then enable_grub_emu=yes else enable_grub_emu=no grub_emu_usb_excuse="grub-emu isn't built" fi if test x"$enable_grub_emu_usb" = xno ; then grub_emu_usb_excuse="explicitly disabled" fi [if [ x"$grub_emu_usb_excuse" = x ]; then # Check for libusb libraries.] AC_CHECK_LIB([usb], [usb_claim_interface], [LIBUSB="-lusb"], [grub_emu_usb_excuse=["need libusb library"]]) AC_SUBST([LIBUSB]) [fi] [if [ x"$grub_emu_usb_excuse" = x ]; then # Check for headers.] AC_CHECK_HEADERS([usb.h], [], [grub_emu_usb_excuse=["need libusb headers"]]) [fi] if test x"enable_grub_emu_usb" = xyes && test x"$grub_emu_usb_excuse" != x ; then AC_MSG_ERROR([USB support for grub-emu was explicitly requested but can't be compiled]) fi if test x"$grub_emu_usb_excuse" = x ; then enable_grub_emu_usb=yes else enable_grub_emu_usb=no 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 (default=guessed)])]) if test x"$enable_grub_fstest" = xno ; then grub_fstest_excuse="explicitly disabled" fi if test x"$grub_fstest_excuse" = x ; then enable_grub_fstest=yes else enable_grub_fstest=no fi AC_SUBST([enable_grub_fstest]) AC_ARG_ENABLE([grub-mkfont], [AS_HELP_STRING([--enable-grub-mkfont], [build and install the `grub-mkfont' utility (default=guessed)])]) if test x"$enable_grub_mkfont" = xno ; then grub_mkfont_excuse="explicitly disabled" fi if test x"$grub_mkfont_excuse" = x ; then # Check for freetype libraries. AC_CHECK_PROGS([FREETYPE], [freetype-config]) if test "x$FREETYPE" = x ; then grub_mkfont_excuse=["need freetype2 library"] fi freetype_cflags=`freetype-config --cflags` freetype_libs=`freetype-config --libs` fi if test x"$enable_grub_mkfont" = xyes && test x"$grub_mkfont_excuse" != x ; then AC_MSG_ERROR([grub-mkfont was explicitly requested but can't be compiled]) fi if test x"$grub_mkfont_excuse" = x ; then enable_grub_mkfont=yes else enable_grub_mkfont=no fi AC_SUBST([enable_grub_mkfont]) AC_SUBST([freetype_cflags]) AC_SUBST([freetype_libs]) 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/$platform include/grub/machine 2>/dev/null fi AC_CONFIG_FILES([Makefile gensymlist.sh genkernsyms.sh]) AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h]) AC_OUTPUT [ echo "*******************************************************" echo GRUB2 will be compiled with following components: echo Platform: "$target_cpu"-"$platform" if [ x"$grub_emu_excuse" = x ]; then echo grub-emu: Yes else echo grub-emu: No "($grub_emu_excuse)" fi if [ x"$grub_emu_usb_excuse" = x ]; then echo USB support for grub-emu: Yes else echo USB support for grub-emu: No "($grub_emu_usb_excuse)" fi if [ x"$enable_mm_debug" = xyes ]; then echo With memory debugging: Yes else echo With memory debugging: No fi if [ x"$efiemu_excuse" = x ]; then echo efiemu runtime: Yes else echo efiemu runtime: No "($efiemu_excuse)" fi if [ x"$grub_fstest_excuse" = x ]; then echo grub-fstest: Yes else echo grub-fstest: No "($grub_fstest_excuse)" fi if [ x"$grub_mkfont_excuse" = x ]; then echo grub-mkfont: Yes else echo grub-mkfont: No "($grub_mkfont_excuse)" fi echo "*******************************************************" ]