# aclocal.m4 generated automatically by aclocal 1.6.3 -*- Autoconf -*- # Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 # Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # 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 grub_ASM_USCORE checks if C symbols get an underscore after dnl compiling to assembler. dnl Written by Pavel Roskin. Based on grub_ASM_EXT_C written by dnl Erich Boleyn and modified by OKUJI Yoshinori AC_DEFUN(grub_ASM_USCORE, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if C symbols get an underscore after compilation]) AC_CACHE_VAL(grub_cv_asm_uscore, [cat > conftest.c <<\EOF int func (int *list) { *list = 0; return *list; } EOF if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -S conftest.c]) && test -s conftest.s; then true else AC_MSG_ERROR([${CC-cc} failed to produce assembly code]) fi if grep _func conftest.s >/dev/null 2>&1; then grub_cv_asm_uscore=yes else grub_cv_asm_uscore=no fi rm -f conftest*]) if test "x$grub_cv_asm_uscore" = xyes; then AC_DEFINE_UNQUOTED([HAVE_ASM_USCORE], $grub_cv_asm_uscore, [Define if C symbols get an underscore after compilation]) fi AC_MSG_RESULT([$grub_cv_asm_uscore]) ]) dnl Some versions of `objcopy -O binary' vary their output depending dnl on the link address. AC_DEFUN(grub_PROG_OBJCOPY_ABSOLUTE, [AC_MSG_CHECKING([whether ${OBJCOPY} works for absolute addresses]) AC_CACHE_VAL(grub_cv_prog_objcopy_absolute, [cat > conftest.c <<\EOF void cmain (void) { *((int *) 0x1000) = 2; } EOF if AC_TRY_EVAL(ac_compile) && test -s conftest.o; then : else AC_MSG_ERROR([${CC-cc} cannot compile C source code]) fi grub_cv_prog_objcopy_absolute=yes for link_addr in 2000 8000 7C00; do if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -nostdlib -Wl,-N -Wl,-Ttext -Wl,$link_addr conftest.o -o conftest.exec]); then : else AC_MSG_ERROR([${CC-cc} cannot link at address $link_addr]) fi if AC_TRY_COMMAND([${OBJCOPY-objcopy} -O binary conftest.exec conftest]); then : else AC_MSG_ERROR([${OBJCOPY-objcopy} cannot create binary files]) fi if test ! -f conftest.old || AC_TRY_COMMAND([cmp -s conftest.old conftest]); then mv -f conftest conftest.old else grub_cv_prog_objcopy_absolute=no break fi done rm -f conftest*]) AC_MSG_RESULT([$grub_cv_prog_objcopy_absolute])]) dnl Mass confusion! dnl Older versions of GAS interpret `.code16' to mean ``generate 32-bit dnl instructions, but implicitly insert addr32 and data32 bytes so dnl that the code works in real mode''. dnl dnl Newer versions of GAS interpret `.code16' to mean ``generate 16-bit dnl instructions,'' which seems right. This requires the programmer dnl to explicitly insert addr32 and data32 instructions when they want dnl them. dnl dnl We only support the newer versions, because the old versions cause dnl major pain, by requiring manual assembly to get 16-bit instructions into dnl stage1/stage1.S. AC_DEFUN(grub_ASM_ADDR32, [AC_REQUIRE([AC_PROG_CC]) AC_REQUIRE([grub_ASM_PREFIX_REQUIREMENT]) AC_MSG_CHECKING([for .code16 addr32 assembler support]) AC_CACHE_VAL(grub_cv_asm_addr32, [cat > conftest.s.in <<\EOF .code16 l1: @ADDR32@ movb %al, l1 EOF if test "x$grub_cv_asm_prefix_requirement" = xyes; then sed -e s/@ADDR32@/addr32/ < conftest.s.in > conftest.s else sed -e s/@ADDR32@/addr32\;/ < conftest.s.in > conftest.s fi if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then grub_cv_asm_addr32=yes else grub_cv_asm_addr32=no fi rm -f conftest*]) AC_MSG_RESULT([$grub_cv_asm_addr32])]) dnl dnl Later versions of GAS requires that addr32 and data32 prefixes dnl appear in the same lines as the instructions they modify, while dnl earlier versions requires that they appear in separate lines. AC_DEFUN(grub_ASM_PREFIX_REQUIREMENT, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING(dnl [whether addr32 must be in the same line as the instruction]) AC_CACHE_VAL(grub_cv_asm_prefix_requirement, [cat > conftest.s <<\EOF .code16 l1: addr32 movb %al, l1 EOF if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then grub_cv_asm_prefix_requirement=yes else grub_cv_asm_prefix_requirement=no fi rm -f conftest*]) if test "x$grub_cv_asm_prefix_requirement" = xyes; then grub_tmp_addr32="addr32" grub_tmp_data32="data32" else grub_tmp_addr32="addr32;" grub_tmp_data32="data32;" fi AC_DEFINE_UNQUOTED([ADDR32], $grub_tmp_addr32, [Define it to \"addr32\" or \"addr32;\" to make GAS happy]) AC_DEFINE_UNQUOTED([DATA32], $grub_tmp_data32, [Define it to \"data32\" or \"data32;\" to make GAS happy]) AC_MSG_RESULT([$grub_cv_asm_prefix_requirement])]) dnl dnl Older versions of GAS require that absolute indirect calls/jumps are dnl not prefixed with `*', while later versions warn if not prefixed. AC_DEFUN(grub_ASM_ABSOLUTE_WITHOUT_ASTERISK, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING(dnl [whether an absolute indirect call/jump must not be prefixed with an asterisk]) AC_CACHE_VAL(grub_cv_asm_absolute_without_asterisk, [cat > conftest.s <<\EOF lcall *(offset) offset: .long 0 .word 0 EOF if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} -c conftest.s]) && test -s conftest.o; then grub_cv_asm_absolute_without_asterisk=no else grub_cv_asm_absolute_without_asterisk=yes fi rm -f conftest*]) if test "x$grub_cv_asm_absolute_without_asterisk" = xyes; then AC_DEFINE([ABSOLUTE_WITHOUT_ASTERISK]) fi AC_MSG_RESULT([$grub_cv_asm_absolute_without_asterisk])]) dnl dnl grub_CHECK_START_SYMBOL checks if start is automatically defined by dnl the compiler. dnl Written by OKUJI Yoshinori AC_DEFUN(grub_CHECK_START_SYMBOL, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if start is defined by the compiler]) AC_CACHE_VAL(grub_cv_check_start_symbol, [AC_TRY_LINK([], [asm ("incl start")], grub_cv_check_start_symbol=yes, grub_cv_check_start_symbol=no)]) if test "x$grub_cv_check_start_symbol" = xyes; then AC_DEFINE([HAVE_START_SYMBOL]) fi AC_MSG_RESULT([$grub_cv_check_start_symbol]) ]) dnl dnl grub_CHECK_USCORE_START_SYMBOL checks if _start is automatically dnl defined by the compiler. dnl Written by OKUJI Yoshinori AC_DEFUN(grub_CHECK_USCORE_START_SYMBOL, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if _start is defined by the compiler]) AC_CACHE_VAL(grub_cv_check_uscore_start_symbol, [AC_TRY_LINK([], [asm ("incl _start")], grub_cv_check_uscore_start_symbol=yes, grub_cv_check_uscore_start_symbol=no)]) if test "x$grub_cv_check_uscore_start_symbol" = xyes; then AC_DEFINE([HAVE_USCORE_START_SYMBOL]) fi AC_MSG_RESULT([$grub_cv_check_uscore_start_symbol]) ]) dnl dnl grub_CHECK_USCORE_USCORE_BSS_START_SYMBOL checks if __bss_start is dnl automatically defined by the compiler. dnl Written by Michael Hohmoth. AC_DEFUN(grub_CHECK_USCORE_USCORE_BSS_START_SYMBOL, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if __bss_start is defined by the compiler]) AC_CACHE_VAL(grub_cv_check_uscore_uscore_bss_start_symbol, [AC_TRY_LINK([], [asm ("incl __bss_start")], grub_cv_check_uscore_uscore_bss_start_symbol=yes, grub_cv_check_uscore_uscore_bss_start_symbol=no)]) if test "x$grub_cv_check_uscore_uscore_bss_start_symbol" = xyes; then AC_DEFINE([HAVE_USCORE_USCORE_BSS_START_SYMBOL]) fi AC_MSG_RESULT([$grub_cv_check_uscore_uscore_bss_start_symbol]) ]) dnl dnl grub_CHECK_EDATA_SYMBOL checks if edata is automatically defined by the dnl compiler. dnl Written by Michael Hohmuth. AC_DEFUN(grub_CHECK_EDATA_SYMBOL, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if edata is defined by the compiler]) AC_CACHE_VAL(grub_cv_check_edata_symbol, [AC_TRY_LINK([], [asm ("incl edata")], grub_cv_check_edata_symbol=yes, grub_cv_check_edata_symbol=no)]) if test "x$grub_cv_check_edata_symbol" = xyes; then AC_DEFINE([HAVE_EDATA_SYMBOL]) fi AC_MSG_RESULT([$grub_cv_check_edata_symbol]) ]) dnl dnl grub_CHECK_USCORE_EDATA_SYMBOL checks if _edata is automatically dnl defined by the compiler. dnl Written by Michael Hohmuth. AC_DEFUN(grub_CHECK_USCORE_EDATA_SYMBOL, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if _edata is defined by the compiler]) AC_CACHE_VAL(grub_cv_check_uscore_edata_symbol, [AC_TRY_LINK([], [asm ("incl _edata")], grub_cv_check_uscore_edata_symbol=yes, grub_cv_check_uscore_edata_symbol=no)]) if test "x$grub_cv_check_uscore_edata_symbol" = xyes; then AC_DEFINE([HAVE_USCORE_EDATA_SYMBOL]) fi AC_MSG_RESULT([$grub_cv_check_uscore_edata_symbol]) ]) dnl dnl grub_CHECK_END_SYMBOL checks if end is automatically defined by the dnl compiler. dnl Written by OKUJI Yoshinori AC_DEFUN(grub_CHECK_END_SYMBOL, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if end is defined by the compiler]) AC_CACHE_VAL(grub_cv_check_end_symbol, [AC_TRY_LINK([], [asm ("incl end")], grub_cv_check_end_symbol=yes, grub_cv_check_end_symbol=no)]) if test "x$grub_cv_check_end_symbol" = xyes; then AC_DEFINE([HAVE_END_SYMBOL]) fi AC_MSG_RESULT([$grub_cv_check_end_symbol]) ]) dnl dnl grub_CHECK_USCORE_END_SYMBOL checks if _end is automatically defined dnl by the compiler. dnl Written by OKUJI Yoshinori AC_DEFUN(grub_CHECK_USCORE_END_SYMBOL, [AC_REQUIRE([AC_PROG_CC]) AC_MSG_CHECKING([if _end is defined by the compiler]) AC_CACHE_VAL(grub_cv_check_uscore_end_symbol, [AC_TRY_LINK([], [asm ("incl _end")], grub_cv_check_uscore_end_symbol=yes, grub_cv_check_uscore_end_symbol=no)]) if test "x$grub_cv_check_uscore_end_symbol" = xyes; then AC_DEFINE([HAVE_USCORE_END_SYMBOL]) fi AC_MSG_RESULT([$grub_cv_check_uscore_end_symbol]) ]) dnl grub_DEFINE_FILE(MACRO_NAME, FILE_NAME) dnl grub_DEFINE_FILE defines a macro as the contents of a file safely. dnl Replace some escape sequences, because autoconf doesn't handle them dnl gracefully. dnl Written by OKUJI Yoshinori. AC_DEFUN(grub_DEFINE_FILE, [AC_REQUIRE([AC_PROG_CC]) # Because early versions of GNU sed 3.x are too buggy, use a C program # instead of shell commands. *sigh* cat >conftest.c <<\EOF #include int main (void) { int c; while ((c = getchar ()) != EOF) { switch (c) { case '\n': fputs ("\\n", stdout); break; case '\r': fputs ("\\r", stdout); break; case '\\': fputs ("\\\\", stdout); break; case '"': fputs ("\\\"", stdout); break; default: putchar (c); } } return 0; } EOF if AC_TRY_COMMAND([${CC-cc} ${CFLAGS} conftest.c -o conftest]) && test -s conftest; then grub_tmp_value=`./conftest < "[$2]"` else AC_MSG_ERROR([${CC-cc} failed to produce an executable file]) fi AC_DEFINE_UNQUOTED([$1], "$grub_tmp_value") rm -f conftest* ]) # Do all the work for Automake. -*- Autoconf -*- # This macro actually does too much some checks are only needed if # your package does certain things. But this isn't really a big deal. # Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 # Free Software Foundation, Inc. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. # serial 8 # There are a few dirty hacks below to avoid letting `AC_PROG_CC' be # written in clear, in which case automake, when reading aclocal.m4, # will think it sees a *use*, and therefore will trigger all it's # C support machinery. Also note that it means that autoscan, seeing # CC etc. in the Makefile, will ask for an AC_PROG_CC use... AC_PREREQ([2.52]) # Autoconf 2.50 wants to disallow AM_ names. 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