grub/configure.ac
marco_g 121c1d832e 2005-06-30 Marco Gerards <metgerards@student.han.nl>
* configure.ac: Fix the test for cross-compiling.

	* genmk.rb (Program): Use `$(CC)' instead of `$(BUILD_CC)'.  Don't
	define GRUB_UTIL anymore.

	* util/powerpc/ieee1275/grub-mkimage.c (load_note): Endian fixes
	so this function works on other systems than just big endian.
	(load_modules): Likewise.
	(add_segments): Likewise.
2005-06-30 10:21:37 +00:00

150 lines
3.8 KiB
Text

# Process this file with autoconf to produce a configure script.
# Copyright (C) 2002,2003,2004 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.
AC_INIT(GRUB, 1.90, [bug-grub@gnu.org])
AC_PREREQ(2.53)
AC_CONFIG_SRCDIR([include/grub/dl.h])
AC_CONFIG_HEADER([config.h])
# Checks for build and host systems.
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
case "$host_cpu" in
i[[3456]]86) host_cpu=i386 ;;
powerpc) ;;
*) AC_MSG_ERROR([unsupported CPU type]) ;;
esac
case "$host_cpu"-"$host_vendor" in
i386-*) host_vendor=pc ;;
powerpc-*) host_vendor=ieee1275 ;;
*) AC_MSG_ERROR([unsupported machine type]) ;;
esac
AC_SUBST(host_cpu)
AC_SUBST(host_vendor)
# Checks for programs.
if test "x$CFLAGS" = x; then
default_CFLAGS=yes
fi
AC_PROG_CC
AC_SYS_LARGEFILE
# Must be GCC.
test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required])
if test "x$default_CFLAGS" = xyes; then
# debug flags.
tmp_CFLAGS="-Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes \
-Wundef -Wstrict-prototypes -g"
# optimization flags.
AC_CACHE_CHECK([whether optimization for size works], size_flag, [
CFLAGS=-Os
AC_TRY_COMPILE(, , size_flag=yes, size_flag=no)
])
if test "x$size_flag" = xyes; then
tmp_CFLAGS="$tmp_CFLAGS -Os"
else
tmp_CFLAGS="$tmp_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops"
fi
# Force no alignment to save space on i386.
if test "x$host_cpu" = xi386; then
AC_CACHE_CHECK([whether -falign-loops works], [falign_loop_flag], [
CFLAGS="-falign-loops=1"
AC_TRY_COMPILE(, , [falign_loop_flag=yes], [falign_loop_flag=no])
])
if test "x$falign_loop_flag" = xyes; then
tmp_CFLAGS="$tmp_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1"
else
tmp_CFLAGS="$tmp_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1"
fi
fi
CFLAGS="$tmp_CFLAGS"
fi
AC_SUBST(CFLAGS)
# Defined in aclocal.m4.
grub_ASM_USCORE
if test "x$host_cpu" = xi386; then
grub_CHECK_START_SYMBOL
grub_CHECK_BSS_START_SYMBOL
grub_CHECK_END_SYMBOL
fi
if test "x$host_cpu" = xi386; then
grub_I386_ASM_PREFIX_REQUIREMENT
grub_I386_ASM_ADDR32
grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK
grub_I386_CHECK_REGPARM_BUG
else
AC_DEFINE([NESTED_FUNC_ATTR], [],[Catch gcc bug])
fi
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_CHECK_TOOL(OBJCOPY, objcopy)
grub_PROG_OBJCOPY_ABSOLUTE
AC_CHECK_TOOL(STRIP, strip)
AC_CHECK_TOOL(NM, nm)
AC_CHECK_TOOL(LD, ld)
# This is not a "must".
AC_PATH_PROG(RUBY, ruby)
# For cross-compiling.
if test "x$build" != "x$host"; then
AC_CHECK_PROGS(BUILD_CC, [gcc egcs cc],
[AC_MSG_ERROR([none of gcc, egcs and cc is found. set BUILD_CC manually.])])
else
BUILD_CC="$CC"
AC_SUBST(BUILD_CC)
fi
# Test the C compiler for the build environment.
tmp_CC="$CC"
tmp_CFLAGS="$CFLAGS"
tmp_CPPFLAGS="$CPPFLAGS"
CC="$BUILD_CC"
CFLAGS="$BUILD_CFLAGS"
CPPFLAGS="$BUILD_CPPFLAGS"
# Identify characteristics of the build architecture.
AC_C_BIGENDIAN
AC_CHECK_SIZEOF(void *)
AC_CHECK_SIZEOF(long)
# Check LZO when compiling for the i386.
if test "x$host_cpu" = xi386; then
AC_CHECK_LIB(lzo, __lzo_init2, ,
AC_MSG_ERROR([LZO library version 1.02 or later is required]))
AC_CHECK_FUNC(lzo1x_999_compress, ,
[AC_MSG_ERROR([LZO1X-999 must be enabled])])
fi
CC="$tmp_CC"
CFLAGS="$tmp_CFLAGS"
CPPFLAGS="$tmp_CPPFLAGS"
# Output files.
AC_CONFIG_LINKS([include/grub/cpu:include/grub/$host_cpu
include/grub/machine:include/grub/$host_cpu/$host_vendor])
AC_CONFIG_FILES([Makefile])
AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
AC_OUTPUT