1 # Process this file with autoconf to produce a configure script.
3 # Copyright (C) 2002,2003,2004,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
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.
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
14 dnl This configure script is complicated, because GRUB needs to deal
15 dnl with three potentially different types:
17 dnl build -- the environment for building GRUB
18 dnl host -- the environment for running utilities
19 dnl target -- the environment for running GRUB
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.
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
34 AC_INIT([GRUB],[1.97~beta3],[bug-grub@gnu.org])
36 AC_CONFIG_SRCDIR([include/grub/dl.h])
37 AC_CONFIG_HEADER([config.h])
39 # Checks for host and target systems.
43 # Program name transformations
47 i[[3456]]86) target_cpu=i386 ;;
48 sparc) target_cpu=sparc64 ;;
51 # Specify the platform (such as firmware).
52 AC_ARG_WITH([platform],
53 AS_HELP_STRING([--with-platform=PLATFORM],
54 [select the host platform [[guessed]]]))
56 # Guess the platform if not specified.
57 if test "x$with_platform" = x; then
58 case "$target_cpu"-"$target_vendor" in
59 i386-apple) platform=efi ;;
60 i386-*) platform=pc ;;
61 x86_64-apple) platform=efi ;;
62 x86_64-*) platform=pc ;;
63 powerpc-*) platform=ieee1275 ;;
64 powerpc64-*) platform=ieee1275 ;;
65 sparc64-*) platform=ieee1275 ;;
66 *) AC_MSG_ERROR([unsupported CPU: "$target_cpu"]) ;;
69 platform="$with_platform"
72 # Adjust CPU unless target was explicitly specified.
73 if test -z "$target_alias"; then
74 case "$target_cpu"-"$platform" in
76 x86_64-*) target_cpu=i386 ;;
77 powerpc64-ieee1275) target_cpu=powerpc ;;
81 # Check if the platform is supported, make final adjustments.
82 case "$target_cpu"-"$platform" in
87 i386-linuxbios) platform=coreboot ;;
92 *) AC_MSG_ERROR([platform "$platform" is not supported for target CPU "$target_cpu"]) ;;
96 i386 | powerpc) target_m32=1 ;;
97 x86_64 | sparc64) target_m64=1 ;;
101 mingw32) host_os=cygwin ;;
104 # This normalizes the names, and creates a new variable ("host_kernel")
105 # while at it, since the mapping is not always 1:1 (e.g. different OSes
106 # using the same kernel type).
108 gnu*) host_kernel=hurd ;;
109 linux*) host_kernel=linux ;;
110 freebsd* | kfreebsd*-gnu) host_kernel=freebsd ;;
111 cygwin) host_kernel=windows ;;
116 AC_SUBST(host_kernel)
122 # Checks for build programs.
125 # Although cmp is listed in the GNU Coding Standards as a command which
126 # can used directly, OpenBSD lacks cmp in the default installation.
127 AC_CHECK_PROGS([CMP], [cmp])
128 if test "x$CMP" = x; then
129 AC_MSG_ERROR([cmp is not found])
132 AC_CHECK_PROGS([YACC], [bison])
133 if test "x$YACC" = x; then
134 AC_MSG_ERROR([bison is not found])
137 for file in /usr/src/unifont.bdf ; do
138 if test -e $file ; then
139 AC_SUBST([UNIFONT_BDF], [$file])
149 # These are not a "must".
150 AC_PATH_PROG(RUBY, ruby)
151 AC_PATH_PROG(MAKEINFO, makeinfo)
154 # Checks for host programs.
159 test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required])
164 # Identify characteristics of the host architecture.
166 AC_CHECK_SIZEOF(void *)
167 AC_CHECK_SIZEOF(long)
170 if test x$grub_cv_apple_cc = xyes ; then
171 CFLAGS="$CFLAGS -DAPPLE_CC=1 -fnested-functions"
172 ASFLAGS="$ASFLAGS -DAPPLE_CC=1"
175 if test "x$cross_compiling" = xyes; then
176 AC_MSG_WARN([cannot generate manual pages while cross compiling])
178 AC_PATH_PROG(HELP2MAN, help2man)
181 # Check for functions.
182 AC_CHECK_FUNCS(posix_memalign memalign asprintf)
185 # Check for target programs.
188 # Find tools for the target.
189 if test "x$target_alias" != x && test "x$host_alias" != "x$target_alias"; then
190 tmp_ac_tool_prefix="$ac_tool_prefix"
191 ac_tool_prefix=$target_alias-
193 AC_CHECK_TOOLS(TARGET_CC, [gcc egcs cc],
194 [AC_MSG_ERROR([none of gcc, egcs and cc is found. set TARGET_CC manually.])])
195 AC_CHECK_TOOL(OBJCOPY, objcopy)
196 AC_CHECK_TOOL(STRIP, strip)
197 AC_CHECK_TOOL(NM, nm)
199 ac_tool_prefix="$tmp_ac_tool_prefix"
201 if test "x$TARGET_CC" = x; then
204 AC_CHECK_TOOL(OBJCOPY, objcopy)
205 AC_CHECK_TOOL(STRIP, strip)
206 AC_CHECK_TOOL(NM, nm)
211 # Test the C compiler for the target environment.
214 tmp_LDFLAGS="$LDFLAGS"
215 tmp_CPPFLAGS="$CPPFLAGS"
218 CFLAGS="$TARGET_CFLAGS"
219 CPPFLAGS="$TARGET_CPPFLAGS"
220 LDFLAGS="$TARGET_LDFLAGS"
223 if test "x$TARGET_CFLAGS" = x; then
225 TARGET_CFLAGS="-Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes \
226 -Wundef -Wstrict-prototypes -g"
228 # optimization flags.
229 AC_CACHE_CHECK([whether optimization for size works], grub_cv_cc_Os, [
231 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
235 if test "x$grub_cv_cc_Os" = xyes; then
236 TARGET_CFLAGS="$TARGET_CFLAGS -Os"
238 TARGET_CFLAGS="$TARGET_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops"
241 # Force no alignment to save space on i386.
242 if test "x$target_cpu" = xi386; then
243 AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [
244 CFLAGS="$CFLAGS -falign-loops=1"
245 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
246 [grub_cv_cc_falign_loop=yes],
247 [grub_cv_cc_falign_loop=no])
250 if test "x$grub_cv_cc_falign_loop" = xyes; then
251 TARGET_CFLAGS="$TARGET_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1"
253 TARGET_CFLAGS="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
257 # By default, GCC 4.4 generates .eh_frame sections containing unwind
258 # information in some cases where it previously did not. GRUB doesn't need
259 # these and they just use up vital space. Restore the old compiler
261 AC_CACHE_CHECK([whether -fno-dwarf2-cfi-asm works], [grub_cv_cc_fno_dwarf2_cfi_asm], [
262 SAVE_CFLAGS="$CFLAGS"
263 CFLAGS="$CFLAGS -fno-dwarf2-cfi-asm"
264 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
265 [grub_cv_cc_fno_dwarf2_cfi_asm=yes],
266 [grub_cv_cc_fno_dwarf2_cfi_asm=no])
267 CFLAGS="$SAVE_CFLAGS"
270 if test "x$grub_cv_cc_fno_dwarf2_cfi_asm" = xyes; then
271 TARGET_CFLAGS="$TARGET_CFLAGS -fno-dwarf2-cfi-asm"
276 if test x$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="$TARGET_ASFLAGS -DAPPLE_CC=1"
281 AC_CHECK_PROG([OBJCONV], [objconv], [objconv], [])
282 if test "x$OBJCONV" = x ; then
283 AC_CHECK_PROG([OBJCONV], [objconv], [./objconv], [], [.])
285 if test "x$OBJCONV" = x ; then
286 AC_MSG_ERROR([objconv not found which is required when building with apple compiler])
289 TARGET_IMG_CFLAGS="-static"
290 TARGET_IMG_LDFLAGS='-nostdlib -static -Wl,-preload -Wl,-segalign,20 -Wl,-image_base,'
291 TARGET_IMG_LDFLAGS_AC='-nostdlib -static -Wl,-preload -Wl,-segalign,20 -Wl,-image_base,'
294 # Use linker script if present, otherwise use builtin -N script.
295 if test -f "${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"; then
296 TARGET_IMG_LDSCRIPT='$(top_srcdir)'"/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
297 TARGET_IMG_LDFLAGS="-Wl,-T${TARGET_IMG_LDSCRIPT} -Wl,-Ttext,"
298 TARGET_IMG_LDFLAGS_AC="-Wl,-T${srcdir}/conf/${target_cpu}-${platform}-${host_os}-img-ld.sc"
301 TARGET_IMG_LDFLAGS='-Wl,-N -Wl,-Ttext,'
302 TARGET_IMG_LDFLAGS_AC='-Wl,-N -Wl,-Ttext,'
307 AC_SUBST(TARGET_IMG_LDSCRIPT)
308 AC_SUBST(TARGET_IMG_LDFLAGS)
309 AC_SUBST(TARGET_IMG_CFLAGS)
311 # For platforms where ELF is not the default link format.
312 AC_MSG_CHECKING([for command to convert module to ELF format])
314 cygwin) TARGET_OBJ2ELF='grub-pe2elf' ;;
317 AC_SUBST(TARGET_OBJ2ELF)
318 AC_MSG_RESULT([$TARGET_OBJ2ELF])
321 if test "x$target_m32" = x1; then
323 TARGET_CFLAGS="$TARGET_CFLAGS -m32"
324 TARGET_LDFLAGS="$TARGET_LDFLAGS -m32"
325 TARGET_MODULE_FORMAT="elf32"
328 if test "x$target_m64" = x1; then
330 TARGET_CFLAGS="$TARGET_CFLAGS -m64"
331 TARGET_LDFLAGS="$TARGET_LDFLAGS -m64"
332 TARGET_MODULE_FORMAT="elf64"
335 if test "$target_cpu"-"$platform" = x86_64-efi; then
336 # Use large model to support 4G memory
337 AC_CACHE_CHECK([whether option -mcmodel=large works], grub_cv_cc_mcmodel, [
339 CFLAGS="$CFLAGS -m64 -mcmodel=large"
340 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
341 [grub_cv_cc_mcmodel=yes],
342 [grub_cv_cc_mcmodel=no])
344 if test "x$grub_cv_cc_mcmodel" = xno; then
345 CFLAGS="$SAVED_CFLAGS -m64 -DMCMODEL_SMALL=1"
346 TARGET_CFLAGS="$TARGET_CFLAGS -DMCMODEL_SMALL=1"
347 AC_MSG_WARN([-mcmodel=large not supported. You won't be able to use the memory over 4GiB. Upgrade your gcc])
349 TARGET_CFLAGS="$TARGET_CFLAGS -mcmodel=large"
352 # EFI writes to stack below %rsp, we must not use the red zone
353 AC_CACHE_CHECK([whether option -mno-red-zone works], grub_cv_cc_no_red_zone, [
354 CFLAGS="$CFLAGS -m64 -mno-red-zone"
355 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
356 [grub_cv_cc_no_red_zone=yes],
357 [grub_cv_cc_no_red_zone=no])
359 if test "x$grub_cv_cc_no_red_zone" = xno; then
360 AC_MSG_ERROR([-mno-red-zone not supported, upgrade your gcc])
363 TARGET_CFLAGS="$TARGET_CFLAGS -mno-red-zone"
370 # Need __enable_execute_stack() for nested function trampolines?
371 grub_CHECK_ENABLE_EXECUTE_STACK
373 # Position independent executable.
375 [# Need that, because some distributions ship compilers that include
376 # `-fPIE' in the default specs.
377 if [ x"$pie_possible" = xyes ]; then
378 TARGET_CFLAGS="$TARGET_CFLAGS -fno-PIE"
381 # Smashing stack protector.
382 grub_CHECK_STACK_PROTECTOR
383 # Need that, because some distributions ship compilers that include
384 # `-fstack-protector' in the default specs.
385 if test "x$ssp_possible" = xyes; then
386 TARGET_CFLAGS="$TARGET_CFLAGS -fno-stack-protector"
388 grub_CHECK_STACK_ARG_PROBE
389 # Cygwin's GCC uses alloca() to probe the stackframe on static
390 # stack allocations above some threshold.
391 if test x"$sap_possible" = xyes; then
392 TARGET_CFLAGS="$TARGET_CFLAGS -mno-stack-arg-probe"
395 AC_ARG_ENABLE([werror],
396 [AS_HELP_STRING([--disable-werror],
397 [do not use -Werror when building GRUB])])
398 if test x"$enable_werror" != xno ; then
399 TARGET_CFLAGS="$TARGET_CFLAGS -Werror"
402 AC_SUBST(TARGET_CFLAGS)
403 AC_SUBST(TARGET_MODULE_FORMAT)
405 AC_SUBST(TARGET_APPLE_CC)
406 AC_SUBST(TARGET_ASFLAGS)
407 AC_SUBST(TARGET_CPPFLAGS)
408 AC_SUBST(TARGET_LDFLAGS)
410 # Set them to their new values for the tests below.
412 if test "x$TARGET_APPLE_CC" = x1 ; then
413 CFLAGS="$TARGET_CFLAGS -nostdlib"
415 CFLAGS="$TARGET_CFLAGS -nostdlib -Wl,--defsym,___main=0x8100"
417 CPPFLAGS="$TARGET_CPPFLAGS"
418 LDFLAGS="$TARGET_LDFLAGS"
420 # Defined in aclocal.m4.
422 if test "x$TARGET_APPLE_CC" != x1 ; then
423 grub_PROG_OBJCOPY_ABSOLUTE
425 grub_PROG_LD_BUILD_ID_NONE
427 if test "x$target_cpu" = xi386; then
428 if test ! -z "$TARGET_IMG_LDSCRIPT"; then
429 # Check symbols provided by linker script.
430 CFLAGS="$TARGET_CFLAGS -nostdlib $TARGET_IMG_LDFLAGS_AC -Wl,-Ttext,8000,--defsym,___main=0x8100"
432 if test "x$TARGET_APPLE_CC" != x1 ; then
433 grub_CHECK_BSS_START_SYMBOL
434 grub_CHECK_END_SYMBOL
436 CFLAGS="$TARGET_CFLAGS"
437 grub_I386_ASM_PREFIX_REQUIREMENT
439 grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK
441 AC_DEFINE([NESTED_FUNC_ATTR], [], [Catch gcc bug])
444 AH_BOTTOM([#if defined(__i386__) && !defined(GRUB_UTIL)
445 #define NESTED_FUNC_ATTR __attribute__ ((__regparm__ (1)))
447 #define NESTED_FUNC_ATTR
450 AC_ARG_ENABLE([efiemu],
451 [AS_HELP_STRING([--enable-efiemu],
452 [build and install the efiemu runtimes (default=guessed)])])
453 if test x"$enable_efiemu" = xno ; then
454 efiemu_excuse="explicitly disabled"
456 if test x"$efiemu_excuse" = x ; then
457 AC_CACHE_CHECK([whether options required for efiemu work], grub_cv_cc_efiemu, [
458 CFLAGS="$CFLAGS -m64 -mcmodel=large -mno-red-zone -nostdlib"
459 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
460 [grub_cv_cc_efiemu=yes],
461 [grub_cv_cc_efiemu=no])
463 if test x$grub_cv_cc_efiemu = xno; then
464 efiemu_excuse="cannot compile with -m64 -mcmodel=large -mno-red-zone -nostdlib"
467 if test x"$enable_efiemu" = xyes && test x"$efiemu_excuse" != x ; then
468 AC_MSG_ERROR([efiemu runtime was explicitly requested but can't be compiled])
470 if test x"$efiemu_excuse" = x ; then
475 AC_SUBST([enable_efiemu])
481 CPPFLAGS="$tmp_CPPFLAGS"
482 LDFLAGS="$tmp_LDFLAGS"
489 # Memory manager debugging.
490 AC_ARG_ENABLE([mm-debug],
491 AS_HELP_STRING([--enable-mm-debug],
492 [include memory manager debugging]),
493 [AC_DEFINE([MM_DEBUG], [1],
494 [Define to 1 if you enable memory manager debugging.])])
496 AC_ARG_ENABLE([grub-emu],
497 [AS_HELP_STRING([--enable-grub-emu],
498 [build and install the `grub-emu' debugging utility (default=guessed)])])
499 AC_ARG_ENABLE([grub-emu-usb],
500 [AS_HELP_STRING([--enable-grub-emu-usb],
501 [build and install the `grub-emu' debugging utility with USB support (default=guessed)])])
502 if test x"$enable_grub_emu" = xno ; then
503 grub_emu_excuse="explicitly disabled"
506 [# Check for curses libraries.]
507 [if [ x"$grub_emu_excuse" = x ]; then ]
508 AC_CHECK_LIB([ncurses], [wgetch], [LIBCURSES="-lncurses"],
509 [AC_CHECK_LIB([curses], [wgetch], [LIBCURSES="-lcurses"],
510 [grub_emu_excuse=["need (n)curses libraries"]])])
511 AC_SUBST([LIBCURSES])
513 [if [ x"$grub_emu_excuse" = x ]; then ]
514 [# Check for headers.]
515 AC_CHECK_HEADERS([ncurses/curses.h], [],
516 [AC_CHECK_HEADERS([ncurses.h], [],
517 [AC_CHECK_HEADERS([curses.h], [],
518 [grub_emu_excuse=["need (n)curses headers"]])])])
521 if test x"$enable_grub_emu" = xyes && test x"$grub_emu_excuse" != x ; then
522 AC_MSG_ERROR([grub-emu was explicitly requested but can't be compiled])
524 if test x"$grub_emu_excuse" = x ; then
528 grub_emu_usb_excuse="grub-emu isn't built"
530 if test x"$enable_grub_emu_usb" = xno ; then
531 grub_emu_usb_excuse="explicitly disabled"
533 [if [ x"$grub_emu_usb_excuse" = x ]; then
534 # Check for libusb libraries.]
535 AC_CHECK_LIB([usb], [usb_claim_interface], [LIBUSB="-lusb"],
536 [grub_emu_usb_excuse=["need libusb library"]])
539 [if [ x"$grub_emu_usb_excuse" = x ]; then
540 # Check for headers.]
541 AC_CHECK_HEADERS([usb.h], [],
542 [grub_emu_usb_excuse=["need libusb headers"]])
544 if test x"enable_grub_emu_usb" = xyes && test x"$grub_emu_usb_excuse" != x ; then
545 AC_MSG_ERROR([USB support for grub-emu was explicitly requested but can't be compiled])
547 if test x"$grub_emu_usb_excuse" = x ; then
548 enable_grub_emu_usb=yes
550 enable_grub_emu_usb=no
553 AC_SUBST([enable_grub_emu])
554 AC_SUBST([enable_grub_emu_usb])
556 AC_ARG_ENABLE([grub-fstest],
557 [AS_HELP_STRING([--enable-grub-fstest],
558 [build and install the `grub-fstest' debugging utility (default=guessed)])])
559 if test x"$enable_grub_fstest" = xno ; then
560 grub_fstest_excuse="explicitly disabled"
562 if test x"$grub_fstest_excuse" = x ; then
563 enable_grub_fstest=yes
565 enable_grub_fstest=no
567 AC_SUBST([enable_grub_fstest])
569 AC_ARG_ENABLE([grub-mkfont],
570 [AS_HELP_STRING([--enable-grub-mkfont],
571 [build and install the `grub-mkfont' utility (default=guessed)])])
572 if test x"$enable_grub_mkfont" = xno ; then
573 grub_mkfont_excuse="explicitly disabled"
576 if test x"$grub_mkfont_excuse" = x ; then
577 # Check for freetype libraries.
578 AC_CHECK_PROGS([FREETYPE], [freetype-config])
579 if test "x$FREETYPE" = x ; then
580 grub_mkfont_excuse=["need freetype2 library"]
582 freetype_cflags=`freetype-config --cflags`
583 freetype_libs=`freetype-config --libs`
585 if test x"$enable_grub_mkfont" = xyes && test x"$grub_mkfont_excuse" != x ; then
586 AC_MSG_ERROR([grub-mkfont was explicitly requested but can't be compiled])
588 if test x"$grub_mkfont_excuse" = x ; then
589 enable_grub_mkfont=yes
591 enable_grub_mkfont=no
593 AC_SUBST([enable_grub_mkfont])
594 AC_SUBST([freetype_cflags])
595 AC_SUBST([freetype_libs])
601 if test x"$link_dir" = xyes ; then
602 AC_CONFIG_LINKS([include/grub/cpu:include/grub/$target_cpu
603 include/grub/machine:include/grub/$target_cpu/$platform])
605 mkdir -p include/grub 2>/dev/null
606 rm -rf include/grub/cpu
607 cp -rp $srcdir/include/grub/$target_cpu include/grub/cpu 2>/dev/null
608 rm -rf include/grub/machine
609 cp -rp $srcdir/include/grub/$target_cpu/$platform include/grub/machine 2>/dev/null
611 AC_CONFIG_FILES([Makefile gensymlist.sh genkernsyms.sh])
612 AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
615 echo "*******************************************************"
616 echo GRUB2 will be compiled with following components:
617 echo Platform: "$target_cpu"-"$platform"
618 if [ x"$grub_emu_excuse" = x ]; then
621 echo grub-emu: No "($grub_emu_excuse)"
623 if [ x"$grub_emu_usb_excuse" = x ]; then
624 echo USB support for grub-emu: Yes
626 echo USB support for grub-emu: No "($grub_emu_usb_excuse)"
628 if [ x"$enable_mm_debug" = xyes ]; then
629 echo With memory debugging: Yes
631 echo With memory debugging: No
633 if [ x"$efiemu_excuse" = x ]; then
634 echo efiemu runtime: Yes
636 echo efiemu runtime: No "($efiemu_excuse)"
638 if [ x"$grub_fstest_excuse" = x ]; then
639 echo grub-fstest: Yes
641 echo grub-fstest: No "($grub_fstest_excuse)"
643 if [ x"$grub_mkfont_excuse" = x ]; then
644 echo grub-mkfont: Yes
646 echo grub-mkfont: No "($grub_mkfont_excuse)"
648 echo "*******************************************************"