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6a161fa9 | 1 | # Process this file with autoconf to produce a configure script. |
2 | ||
3d04eab8 | 3 | # Copyright (C) 2002,2003,2004,2005,2006,2007,2008 Free Software Foundation, Inc. |
6a161fa9 | 4 | # |
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. | |
8 | # | |
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 | |
12 | # PARTICULAR PURPOSE. | |
13 | ||
b977bf01 | 14 | dnl This configure script is complicated, because GRUB needs to deal |
15 | dnl with three potentially different types: | |
16 | dnl | |
17 | dnl build -- the environment for building GRUB | |
18 | dnl host -- the environment for running utilities | |
19 | dnl target -- the environment for running GRUB | |
20 | dnl | |
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. | |
25 | dnl | |
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 | |
31 | dnl type. | |
32 | ||
33 | ||
f2a76e1d | 34 | AC_INIT(GRUB, 1.96, [bug-grub@gnu.org]) |
6a161fa9 | 35 | AC_PREREQ(2.53) |
4b13b216 | 36 | AC_CONFIG_SRCDIR([include/grub/dl.h]) |
6a161fa9 | 37 | AC_CONFIG_HEADER([config.h]) |
38 | ||
b977bf01 | 39 | # Checks for host and target systems. |
6a161fa9 | 40 | AC_CANONICAL_HOST |
b977bf01 | 41 | AC_CANONICAL_TARGET |
6a161fa9 | 42 | |
1d543c3e | 43 | # Program name transformations |
44 | AC_ARG_PROGRAM | |
45 | ||
6a161fa9 | 46 | case "$host_cpu" in |
b977bf01 | 47 | powerpc64) host_m32=1 ;; |
48 | esac | |
49 | ||
50 | case "$target_cpu" in | |
51 | i[[3456]]86) target_cpu=i386 ;; | |
52 | x86_64) target_cpu=i386 target_m32=1 ;; | |
e56cdf21 | 53 | powerpc) ;; |
b977bf01 | 54 | powerpc64) target_cpu=powerpc target_m32=1;; |
e9211b5d | 55 | sparc64) ;; |
6a161fa9 | 56 | *) AC_MSG_ERROR([unsupported CPU type]) ;; |
57 | esac | |
58 | ||
05568c2e | 59 | # Specify the platform (such as firmware). |
60 | AC_ARG_WITH([platform], | |
61 | AS_HELP_STRING([--with-platform=PLATFORM], | |
83b984de | 62 | [select the host platform [[guessed]]])) |
05568c2e | 63 | |
64 | # Guess the platform if not specified. | |
65 | if test "x$with_platform" = x; then | |
b977bf01 | 66 | case "$target_cpu"-"$target_vendor" in |
05568c2e | 67 | i386-apple) platform=efi ;; |
68 | i386-*) platform=pc ;; | |
69 | powerpc-*) platform=ieee1275 ;; | |
70 | sparc64-*) platform=ieee1275 ;; | |
71 | *) AC_MSG_ERROR([unsupported machine type]) ;; | |
72 | esac | |
73 | else | |
74 | platform="$with_platform" | |
75 | fi | |
76 | ||
77 | # Sanity check. | |
b977bf01 | 78 | case "$target_cpu"-"$platform" in |
05568c2e | 79 | i386-efi) ;; |
80 | i386-pc) ;; | |
ca25d8f0 | 81 | i386-linuxbios) ;; |
3d04eab8 | 82 | i386-ieee1275) ;; |
05568c2e | 83 | powerpc-ieee1275) ;; |
84 | sparc64-ieee1275) ;; | |
6a161fa9 | 85 | *) AC_MSG_ERROR([unsupported machine type]) ;; |
86 | esac | |
87 | ||
b977bf01 | 88 | AC_SUBST(target_cpu) |
05568c2e | 89 | AC_SUBST(platform) |
6a161fa9 | 90 | |
b977bf01 | 91 | # |
92 | # Checks for build programs. | |
93 | # | |
144f1f98 | 94 | |
6c826348 | 95 | # Although cmp is listed in the GNU Coding Standards as a command which |
96 | # can used directly, OpenBSD lacks cmp in the default installation. | |
97 | AC_CHECK_PROGS([CMP], [cmp]) | |
98 | if test "x$CMP" = x; then | |
99 | AC_MSG_ERROR([cmp is not found]) | |
100 | fi | |
101 | ||
144f1f98 | 102 | AC_CHECK_PROGS([YACC], [bison]) |
1569ec51 | 103 | if test "x$YACC" = x; then |
6c826348 | 104 | AC_MSG_ERROR([bison is not found]) |
1569ec51 | 105 | fi |
106 | ||
4931827f | 107 | for file in /usr/share/unifont/unifont.hex ; do |
108 | if test -e $file ; then | |
109 | AC_SUBST([UNIFONT_HEX], [$file]) | |
110 | break | |
111 | fi | |
112 | done | |
113 | ||
b977bf01 | 114 | AC_PROG_INSTALL |
115 | AC_PROG_AWK | |
116 | AC_PROG_MAKE_SET | |
117 | ||
68807e5f | 118 | # These are not a "must". |
b977bf01 | 119 | AC_PATH_PROG(RUBY, ruby) |
68807e5f | 120 | AC_PATH_PROG(HELP2MAN, help2man) |
6a161fa9 | 121 | |
b977bf01 | 122 | # |
123 | # Checks for host programs. | |
124 | # | |
125 | ||
126 | AC_PROG_CC | |
6a161fa9 | 127 | # Must be GCC. |
128 | test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required]) | |
129 | ||
4889bdec | 130 | AC_GNU_SOURCE |
b977bf01 | 131 | AC_SYS_LARGEFILE |
132 | ||
133 | # Identify characteristics of the host architecture. | |
134 | AC_C_BIGENDIAN | |
135 | AC_CHECK_SIZEOF(void *) | |
136 | AC_CHECK_SIZEOF(long) | |
137 | ||
138 | if test "x$host_m32" = x1; then | |
139 | # Force 32-bit mode. | |
140 | CFLAGS="$CFLAGS -m32" | |
141 | LDFLAGS="$LDFLAGS -m32" | |
142 | fi | |
143 | ||
144 | # Check LZO when compiling for the i386-pc. | |
145 | if test "$target_cpu"-"$platform" = i386-pc; then | |
146 | # There are three possibilities. LZO version 2 installed with the name | |
147 | # liblzo2, with the name liblzo, and LZO version 1. | |
148 | AC_CHECK_LIB(lzo2, __lzo_init_v2, [LIBLZO="-llzo2"], | |
149 | AC_CHECK_LIB(lzo, __lzo_init_v2, [LIBLZO="-llzo"], | |
150 | AC_CHECK_LIB(lzo, __lzo_init2, [LIBLZO="-llzo"], | |
151 | AC_MSG_ERROR([LZO library version 1.02 or later is required])))) | |
152 | AC_SUBST(LIBLZO) | |
153 | LIBS="$LIBS $LIBLZO" | |
154 | AC_CHECK_FUNC(lzo1x_999_compress, , | |
155 | [AC_MSG_ERROR([LZO1X-999 must be enabled])]) | |
156 | ||
157 | # LZO version 2 uses lzo/lzo1x.h, while LZO version 1 uses lzo1x.h. | |
158 | AC_CHECK_HEADERS(lzo/lzo1x.h lzo1x.h) | |
159 | fi | |
160 | ||
4889bdec | 161 | # Check for functions. |
162 | AC_CHECK_FUNCS(posix_memalign memalign) | |
163 | ||
b977bf01 | 164 | # |
165 | # Check for target programs. | |
166 | # | |
167 | ||
168 | # For cross-compiling. | |
169 | if test "x$target" != "x$host"; then | |
170 | # XXX this depends on the implementation of autoconf! | |
171 | tmp_ac_tool_prefix="$ac_tool_prefix" | |
172 | ac_tool_prefix=$target_alias- | |
173 | ||
174 | AC_CHECK_TOOLS(TARGET_CC, [gcc egcs cc], | |
175 | [AC_MSG_ERROR([none of gcc, egcs and cc is found. set TARGET_CC manually.])]) | |
176 | AC_CHECK_TOOL(OBJCOPY, objcopy) | |
177 | AC_CHECK_TOOL(STRIP, strip) | |
178 | AC_CHECK_TOOL(NM, nm) | |
179 | ||
180 | ac_tool_prefix="$tmp_ac_tool_prefix" | |
181 | else | |
182 | if test "x$TARGET_CC" = x; then | |
183 | TARGET_CC=$CC | |
184 | fi | |
185 | AC_CHECK_TOOL(OBJCOPY, objcopy) | |
186 | AC_CHECK_TOOL(STRIP, strip) | |
187 | AC_CHECK_TOOL(NM, nm) | |
188 | fi | |
189 | AC_SUBST(TARGET_CC) | |
190 | ||
191 | ||
192 | # Test the C compiler for the target environment. | |
193 | tmp_CC="$CC" | |
194 | tmp_CFLAGS="$CFLAGS" | |
195 | tmp_LDFLAGS="$LDFLAGS" | |
196 | tmp_CPPFLAGS="$CPPFLAGS" | |
aa6d7826 | 197 | tmp_LIBS="$LIBS" |
b977bf01 | 198 | CC="$TARGET_CC" |
199 | CFLAGS="$TARGET_CFLAGS" | |
200 | CPPFLAGS="$TARGET_CPPFLAGS" | |
201 | LDFLAGS="$TARGET_LDFLAGS" | |
aa6d7826 | 202 | LIBS="" |
b977bf01 | 203 | |
204 | if test "x$TARGET_CFLAGS" = x; then | |
6a161fa9 | 205 | # debug flags. |
b977bf01 | 206 | TARGET_CFLAGS="-Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes \ |
207 | -Wundef -Wstrict-prototypes -g" | |
6a161fa9 | 208 | |
209 | # optimization flags. | |
322562ea | 210 | AC_CACHE_CHECK([whether optimization for size works], grub_cv_cc_Os, [ |
6a161fa9 | 211 | CFLAGS=-Os |
322562ea | 212 | AC_TRY_COMPILE(, , grub_cv_cc_Os=yes, grub_cv_cc_Os=no) |
6a161fa9 | 213 | ]) |
322562ea | 214 | if test "x$grub_cv_cc_Os" = xyes; then |
b977bf01 | 215 | TARGET_CFLAGS="$TARGET_CFLAGS -Os" |
6a161fa9 | 216 | else |
b977bf01 | 217 | TARGET_CFLAGS="$TARGET_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops" |
6a161fa9 | 218 | fi |
219 | ||
220 | # Force no alignment to save space on i386. | |
b977bf01 | 221 | if test "x$target_cpu" = xi386; then |
322562ea | 222 | AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [ |
6a161fa9 | 223 | CFLAGS="-falign-loops=1" |
322562ea | 224 | AC_TRY_COMPILE(, , [grub_cv_cc_falign_loop=yes], [grub_cv_cc_falign_loop=no]) |
6a161fa9 | 225 | ]) |
226 | ||
322562ea | 227 | if test "x$grub_cv_cc_falign_loop" = xyes; then |
b977bf01 | 228 | TARGET_CFLAGS="$TARGET_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1" |
6a161fa9 | 229 | else |
b977bf01 | 230 | TARGET_CFLAGS="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1" |
6a161fa9 | 231 | fi |
232 | fi | |
b977bf01 | 233 | fi |
6a161fa9 | 234 | |
b977bf01 | 235 | if test "x$target_m32" = x1; then |
236 | # Force 32-bit mode. | |
237 | TARGET_CFLAGS="$TARGET_CFLAGS -m32" | |
238 | TARGET_LDFLAGS="$TARGET_LDFLAGS -m32" | |
6a161fa9 | 239 | fi |
b977bf01 | 240 | |
baa2a121 | 241 | # |
242 | # Compiler features. | |
243 | # | |
244 | ||
245 | # Smashing stack protector. | |
246 | grub_CHECK_STACK_PROTECTOR | |
c3db8364 | 247 | # Need that, because some distributions ship compilers that include |
baa2a121 | 248 | # `-fstack-protector' in the default specs. |
c3db8364 | 249 | if test "x$ssp_possible" = xyes; then |
250 | TARGET_CFLAGS="$TARGET_CFLAGS -fno-stack-protector" | |
251 | fi | |
baa2a121 | 252 | |
b977bf01 | 253 | AC_SUBST(TARGET_CFLAGS) |
254 | AC_SUBST(TARGET_CPPFLAGS) | |
255 | AC_SUBST(TARGET_LDFLAGS) | |
cb71ba20 | 256 | AC_SUBST(MODULE_LDFLAGS) |
6a161fa9 | 257 | |
aa6d7826 | 258 | # Set them to their new values for the tests below. |
259 | CC="$TARGET_CC" | |
260 | CFLAGS="$TARGET_CFLAGS" | |
261 | CPPFLAGS="$TARGET_CPPFLAGS" | |
262 | LDFLAGS="$TARGET_LDFLAGS" | |
263 | ||
6a161fa9 | 264 | # Defined in aclocal.m4. |
b977bf01 | 265 | grub_PROG_OBJCOPY_ABSOLUTE |
cb71ba20 | 266 | grub_PROG_LD_BUILD_ID_NONE |
4b13b216 | 267 | grub_ASM_USCORE |
b977bf01 | 268 | if test "x$target_cpu" = xi386; then |
4b13b216 | 269 | grub_CHECK_START_SYMBOL |
270 | grub_CHECK_BSS_START_SYMBOL | |
271 | grub_CHECK_END_SYMBOL | |
4b13b216 | 272 | grub_I386_ASM_PREFIX_REQUIREMENT |
273 | grub_I386_ASM_ADDR32 | |
274 | grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK | |
275 | grub_I386_CHECK_REGPARM_BUG | |
5aded270 | 276 | else |
f4917dfd | 277 | AC_DEFINE([NESTED_FUNC_ATTR], [], [Catch gcc bug]) |
6a161fa9 | 278 | fi |
279 | ||
c9a86192 | 280 | # Restore the flags. |
9962ed99 | 281 | CC="$tmp_CC" |
282 | CFLAGS="$tmp_CFLAGS" | |
283 | CPPFLAGS="$tmp_CPPFLAGS" | |
c9a86192 | 284 | LDFLAGS="$tmp_LDFLAGS" |
aa6d7826 | 285 | LIBS="$tmp_LIBS" |
6a161fa9 | 286 | |
4fe9862e | 287 | # |
2965c7cc | 288 | # Check for options. |
4fe9862e | 289 | # |
290 | ||
291 | # Memory manager debugging. | |
2965c7cc | 292 | AC_ARG_ENABLE([mm-debug], |
293 | AS_HELP_STRING([--enable-mm-debug], | |
90ce5d56 | 294 | [include memory manager debugging]), |
2965c7cc | 295 | [AC_DEFINE([MM_DEBUG], [1], |
296 | [Define to 1 if you enable memory manager debugging.])]) | |
297 | ||
4fe9862e | 298 | AC_ARG_ENABLE([grub-emu], |
299 | [AS_HELP_STRING([--enable-grub-emu], | |
300 | [build and install the `grub-emu' debugging utility])]) | |
301 | [if [ x"$enable_grub_emu" = xyes ]; then | |
302 | # Check for curses libraries.] | |
303 | AC_CHECK_LIB([ncurses], [wgetch], [LIBCURSES="-lncurses"], | |
304 | [AC_CHECK_LIB([curses], [wgetch], [LIBCURSES="-lcurses"], | |
305 | [AC_MSG_ERROR([(n)curses libraries are required to build `grub-emu'])])]) | |
306 | AC_SUBST([LIBCURSES]) | |
307 | ||
308 | [# Check for headers.] | |
309 | AC_CHECK_HEADERS([ncurses/curses.h], [], | |
310 | [AC_CHECK_HEADERS([ncurses.h], [], | |
311 | [AC_CHECK_HEADERS([curses.h], [], | |
312 | [AC_MSG_ERROR([(n)curses header files are required to build `grub-emu'])])])]) | |
313 | [fi] | |
314 | AC_SUBST([enable_grub_emu]) | |
315 | ||
99fadbaa | 316 | AC_ARG_ENABLE([grub-fstest], |
317 | [AS_HELP_STRING([--enable-grub-fstest], | |
318 | [build and install the `grub-fstest' debugging utility])]) | |
319 | AC_SUBST([enable_grub_fstest]) | |
320 | ||
6a161fa9 | 321 | # Output files. |
b977bf01 | 322 | AC_CONFIG_LINKS([include/grub/cpu:include/grub/$target_cpu |
323 | include/grub/machine:include/grub/$target_cpu/$platform]) | |
7b455f4d | 324 | AC_CONFIG_FILES([Makefile gensymlist.sh genkernsyms.sh]) |
6a161fa9 | 325 | AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h]) |
326 | AC_OUTPUT |