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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 ;; | |
6a161fa9 | 52 | esac |
53 | ||
05568c2e | 54 | # Specify the platform (such as firmware). |
55 | AC_ARG_WITH([platform], | |
56 | AS_HELP_STRING([--with-platform=PLATFORM], | |
83b984de | 57 | [select the host platform [[guessed]]])) |
05568c2e | 58 | |
59 | # Guess the platform if not specified. | |
60 | if test "x$with_platform" = x; then | |
b977bf01 | 61 | case "$target_cpu"-"$target_vendor" in |
05568c2e | 62 | i386-apple) platform=efi ;; |
63 | i386-*) platform=pc ;; | |
737feb35 | 64 | x86_64-*) platform=pc ;; |
05568c2e | 65 | powerpc-*) platform=ieee1275 ;; |
66 | sparc64-*) platform=ieee1275 ;; | |
67 | *) AC_MSG_ERROR([unsupported machine type]) ;; | |
68 | esac | |
69 | else | |
70 | platform="$with_platform" | |
71 | fi | |
72 | ||
546f966a | 73 | case "$platform" in |
74 | linuxbios) platform=coreboot ;; | |
75 | esac | |
76 | ||
20011694 | 77 | if test "x$platform" = "xefi" ; then |
78 | case "$target_cpu" in | |
79 | i386) ;; | |
80 | x86_64) target_m64=1 ;; | |
81 | *) AC_MSG_ERROR([unsupported CPU type for EFI]) ;; | |
82 | esac | |
83 | else | |
84 | case "$target_cpu" in | |
85 | i386) ;; | |
86 | x86_64) target_cpu=i386 target_m32=1 ;; | |
87 | powerpc) ;; | |
88 | powerpc64) target_cpu=powerpc target_m32=1;; | |
89 | sparc64) ;; | |
90 | *) AC_MSG_ERROR([unsupported CPU type]) ;; | |
91 | esac | |
92 | fi | |
93 | ||
05568c2e | 94 | # Sanity check. |
b977bf01 | 95 | case "$target_cpu"-"$platform" in |
05568c2e | 96 | i386-efi) ;; |
20011694 | 97 | x86_64-efi) ;; |
05568c2e | 98 | i386-pc) ;; |
546f966a | 99 | i386-coreboot) ;; |
3d04eab8 | 100 | i386-ieee1275) ;; |
05568c2e | 101 | powerpc-ieee1275) ;; |
102 | sparc64-ieee1275) ;; | |
6a161fa9 | 103 | *) AC_MSG_ERROR([unsupported machine type]) ;; |
104 | esac | |
105 | ||
b977bf01 | 106 | AC_SUBST(target_cpu) |
05568c2e | 107 | AC_SUBST(platform) |
6a161fa9 | 108 | |
b977bf01 | 109 | # |
110 | # Checks for build programs. | |
111 | # | |
144f1f98 | 112 | |
6c826348 | 113 | # Although cmp is listed in the GNU Coding Standards as a command which |
114 | # can used directly, OpenBSD lacks cmp in the default installation. | |
115 | AC_CHECK_PROGS([CMP], [cmp]) | |
116 | if test "x$CMP" = x; then | |
117 | AC_MSG_ERROR([cmp is not found]) | |
118 | fi | |
119 | ||
144f1f98 | 120 | AC_CHECK_PROGS([YACC], [bison]) |
1569ec51 | 121 | if test "x$YACC" = x; then |
6c826348 | 122 | AC_MSG_ERROR([bison is not found]) |
1569ec51 | 123 | fi |
124 | ||
4931827f | 125 | for file in /usr/share/unifont/unifont.hex ; do |
126 | if test -e $file ; then | |
127 | AC_SUBST([UNIFONT_HEX], [$file]) | |
128 | break | |
129 | fi | |
130 | done | |
131 | ||
b977bf01 | 132 | AC_PROG_INSTALL |
133 | AC_PROG_AWK | |
134 | AC_PROG_MAKE_SET | |
135 | ||
68807e5f | 136 | # These are not a "must". |
b977bf01 | 137 | AC_PATH_PROG(RUBY, ruby) |
68807e5f | 138 | AC_PATH_PROG(HELP2MAN, help2man) |
6a161fa9 | 139 | |
b977bf01 | 140 | # |
141 | # Checks for host programs. | |
142 | # | |
143 | ||
144 | AC_PROG_CC | |
6a161fa9 | 145 | # Must be GCC. |
146 | test "x$GCC" = xyes || AC_MSG_ERROR([GCC is required]) | |
147 | ||
4889bdec | 148 | AC_GNU_SOURCE |
b977bf01 | 149 | AC_SYS_LARGEFILE |
150 | ||
151 | # Identify characteristics of the host architecture. | |
152 | AC_C_BIGENDIAN | |
153 | AC_CHECK_SIZEOF(void *) | |
154 | AC_CHECK_SIZEOF(long) | |
155 | ||
156 | if test "x$host_m32" = x1; then | |
157 | # Force 32-bit mode. | |
158 | CFLAGS="$CFLAGS -m32" | |
159 | LDFLAGS="$LDFLAGS -m32" | |
160 | fi | |
161 | ||
162 | # Check LZO when compiling for the i386-pc. | |
163 | if test "$target_cpu"-"$platform" = i386-pc; then | |
aa24b516 | 164 | AC_ARG_ENABLE([lzo], |
165 | [AS_HELP_STRING([--enable-lzo], | |
166 | [use lzo to compress kernel (default is lzma)])]) | |
167 | [if [ x"$enable_lzo" = xyes ]; then | |
168 | # There are three possibilities. LZO version 2 installed with the name | |
169 | # liblzo2, with the name liblzo, and LZO version 1.] | |
170 | AC_DEFINE([ENABLE_LZO], [1], [Use lzo compression]) | |
171 | AC_CHECK_LIB([lzo2], [__lzo_init_v2], [LIBLZO="-llzo2"], | |
172 | [AC_CHECK_LIB([lzo], [__lzo_init_v2], [LIBLZO="-llzo"], | |
173 | [AC_CHECK_LIB([lzo], [__lzo_init2], [LIBLZO="-llzo"], | |
174 | [AC_MSG_ERROR([LZO library version 1.02 or later is required])])])]) | |
175 | AC_SUBST([LIBLZO]) | |
176 | [LIBS="$LIBS $LIBLZO"] | |
177 | AC_CHECK_FUNC([lzo1x_999_compress], , | |
b977bf01 | 178 | [AC_MSG_ERROR([LZO1X-999 must be enabled])]) |
179 | ||
aa24b516 | 180 | [# LZO version 2 uses lzo/lzo1x.h, while LZO version 1 uses lzo1x.h.] |
181 | AC_CHECK_HEADERS([lzo/lzo1x.h lzo1x.h]) | |
182 | [else] | |
183 | AC_DEFINE([ENABLE_LZMA], [1], [Use lzma compression]) | |
184 | [fi] | |
185 | AC_SUBST([enable_lzo]) | |
b977bf01 | 186 | fi |
187 | ||
4889bdec | 188 | # Check for functions. |
189 | AC_CHECK_FUNCS(posix_memalign memalign) | |
190 | ||
b977bf01 | 191 | # |
192 | # Check for target programs. | |
193 | # | |
194 | ||
195 | # For cross-compiling. | |
196 | if test "x$target" != "x$host"; then | |
197 | # XXX this depends on the implementation of autoconf! | |
198 | tmp_ac_tool_prefix="$ac_tool_prefix" | |
199 | ac_tool_prefix=$target_alias- | |
200 | ||
201 | AC_CHECK_TOOLS(TARGET_CC, [gcc egcs cc], | |
202 | [AC_MSG_ERROR([none of gcc, egcs and cc is found. set TARGET_CC manually.])]) | |
203 | AC_CHECK_TOOL(OBJCOPY, objcopy) | |
204 | AC_CHECK_TOOL(STRIP, strip) | |
205 | AC_CHECK_TOOL(NM, nm) | |
206 | ||
207 | ac_tool_prefix="$tmp_ac_tool_prefix" | |
208 | else | |
209 | if test "x$TARGET_CC" = x; then | |
210 | TARGET_CC=$CC | |
211 | fi | |
212 | AC_CHECK_TOOL(OBJCOPY, objcopy) | |
213 | AC_CHECK_TOOL(STRIP, strip) | |
214 | AC_CHECK_TOOL(NM, nm) | |
215 | fi | |
216 | AC_SUBST(TARGET_CC) | |
217 | ||
218 | ||
219 | # Test the C compiler for the target environment. | |
220 | tmp_CC="$CC" | |
221 | tmp_CFLAGS="$CFLAGS" | |
222 | tmp_LDFLAGS="$LDFLAGS" | |
223 | tmp_CPPFLAGS="$CPPFLAGS" | |
aa6d7826 | 224 | tmp_LIBS="$LIBS" |
b977bf01 | 225 | CC="$TARGET_CC" |
226 | CFLAGS="$TARGET_CFLAGS" | |
227 | CPPFLAGS="$TARGET_CPPFLAGS" | |
228 | LDFLAGS="$TARGET_LDFLAGS" | |
aa6d7826 | 229 | LIBS="" |
b977bf01 | 230 | |
231 | if test "x$TARGET_CFLAGS" = x; then | |
6a161fa9 | 232 | # debug flags. |
b977bf01 | 233 | TARGET_CFLAGS="-Wall -W -Wshadow -Wpointer-arith -Wmissing-prototypes \ |
234 | -Wundef -Wstrict-prototypes -g" | |
6a161fa9 | 235 | |
236 | # optimization flags. | |
322562ea | 237 | AC_CACHE_CHECK([whether optimization for size works], grub_cv_cc_Os, [ |
6a161fa9 | 238 | CFLAGS=-Os |
322562ea | 239 | AC_TRY_COMPILE(, , grub_cv_cc_Os=yes, grub_cv_cc_Os=no) |
6a161fa9 | 240 | ]) |
322562ea | 241 | if test "x$grub_cv_cc_Os" = xyes; then |
b977bf01 | 242 | TARGET_CFLAGS="$TARGET_CFLAGS -Os" |
6a161fa9 | 243 | else |
b977bf01 | 244 | TARGET_CFLAGS="$TARGET_CFLAGS -O2 -fno-strength-reduce -fno-unroll-loops" |
6a161fa9 | 245 | fi |
246 | ||
247 | # Force no alignment to save space on i386. | |
b977bf01 | 248 | if test "x$target_cpu" = xi386; then |
322562ea | 249 | AC_CACHE_CHECK([whether -falign-loops works], [grub_cv_cc_falign_loop], [ |
6a161fa9 | 250 | CFLAGS="-falign-loops=1" |
322562ea | 251 | AC_TRY_COMPILE(, , [grub_cv_cc_falign_loop=yes], [grub_cv_cc_falign_loop=no]) |
6a161fa9 | 252 | ]) |
253 | ||
322562ea | 254 | if test "x$grub_cv_cc_falign_loop" = xyes; then |
b977bf01 | 255 | TARGET_CFLAGS="$TARGET_CFLAGS -falign-jumps=1 -falign-loops=1 -falign-functions=1" |
6a161fa9 | 256 | else |
b977bf01 | 257 | TARGET_CFLAGS="$TARGET_CFLAGS -malign-jumps=1 -malign-loops=1 -malign-functions=1" |
6a161fa9 | 258 | fi |
259 | fi | |
b977bf01 | 260 | fi |
6a161fa9 | 261 | |
b977bf01 | 262 | if test "x$target_m32" = x1; then |
263 | # Force 32-bit mode. | |
264 | TARGET_CFLAGS="$TARGET_CFLAGS -m32" | |
265 | TARGET_LDFLAGS="$TARGET_LDFLAGS -m32" | |
6a161fa9 | 266 | fi |
b977bf01 | 267 | |
20011694 | 268 | if test "x$target_m64" = x1; then |
269 | # Force 64-bit mode. | |
270 | TARGET_CFLAGS="$TARGET_CFLAGS -m64" | |
271 | TARGET_LDFLAGS="$TARGET_LDFLAGS -m64" | |
272 | fi | |
273 | ||
baa2a121 | 274 | # |
275 | # Compiler features. | |
276 | # | |
277 | ||
278 | # Smashing stack protector. | |
279 | grub_CHECK_STACK_PROTECTOR | |
c3db8364 | 280 | # Need that, because some distributions ship compilers that include |
baa2a121 | 281 | # `-fstack-protector' in the default specs. |
c3db8364 | 282 | if test "x$ssp_possible" = xyes; then |
283 | TARGET_CFLAGS="$TARGET_CFLAGS -fno-stack-protector" | |
284 | fi | |
baa2a121 | 285 | |
b977bf01 | 286 | AC_SUBST(TARGET_CFLAGS) |
287 | AC_SUBST(TARGET_CPPFLAGS) | |
288 | AC_SUBST(TARGET_LDFLAGS) | |
cb71ba20 | 289 | AC_SUBST(MODULE_LDFLAGS) |
6a161fa9 | 290 | |
aa6d7826 | 291 | # Set them to their new values for the tests below. |
292 | CC="$TARGET_CC" | |
293 | CFLAGS="$TARGET_CFLAGS" | |
294 | CPPFLAGS="$TARGET_CPPFLAGS" | |
295 | LDFLAGS="$TARGET_LDFLAGS" | |
296 | ||
6a161fa9 | 297 | # Defined in aclocal.m4. |
b977bf01 | 298 | grub_PROG_OBJCOPY_ABSOLUTE |
cb71ba20 | 299 | grub_PROG_LD_BUILD_ID_NONE |
4b13b216 | 300 | grub_ASM_USCORE |
b977bf01 | 301 | if test "x$target_cpu" = xi386; then |
4b13b216 | 302 | grub_CHECK_START_SYMBOL |
303 | grub_CHECK_BSS_START_SYMBOL | |
304 | grub_CHECK_END_SYMBOL | |
4b13b216 | 305 | grub_I386_ASM_PREFIX_REQUIREMENT |
306 | grub_I386_ASM_ADDR32 | |
307 | grub_I386_ASM_ABSOLUTE_WITHOUT_ASTERISK | |
308 | grub_I386_CHECK_REGPARM_BUG | |
5aded270 | 309 | else |
f4917dfd | 310 | AC_DEFINE([NESTED_FUNC_ATTR], [], [Catch gcc bug]) |
6a161fa9 | 311 | fi |
312 | ||
c9a86192 | 313 | # Restore the flags. |
9962ed99 | 314 | CC="$tmp_CC" |
315 | CFLAGS="$tmp_CFLAGS" | |
316 | CPPFLAGS="$tmp_CPPFLAGS" | |
c9a86192 | 317 | LDFLAGS="$tmp_LDFLAGS" |
aa6d7826 | 318 | LIBS="$tmp_LIBS" |
6a161fa9 | 319 | |
4fe9862e | 320 | # |
2965c7cc | 321 | # Check for options. |
4fe9862e | 322 | # |
323 | ||
324 | # Memory manager debugging. | |
2965c7cc | 325 | AC_ARG_ENABLE([mm-debug], |
326 | AS_HELP_STRING([--enable-mm-debug], | |
90ce5d56 | 327 | [include memory manager debugging]), |
2965c7cc | 328 | [AC_DEFINE([MM_DEBUG], [1], |
329 | [Define to 1 if you enable memory manager debugging.])]) | |
330 | ||
4fe9862e | 331 | AC_ARG_ENABLE([grub-emu], |
332 | [AS_HELP_STRING([--enable-grub-emu], | |
333 | [build and install the `grub-emu' debugging utility])]) | |
334 | [if [ x"$enable_grub_emu" = xyes ]; then | |
335 | # Check for curses libraries.] | |
336 | AC_CHECK_LIB([ncurses], [wgetch], [LIBCURSES="-lncurses"], | |
337 | [AC_CHECK_LIB([curses], [wgetch], [LIBCURSES="-lcurses"], | |
338 | [AC_MSG_ERROR([(n)curses libraries are required to build `grub-emu'])])]) | |
339 | AC_SUBST([LIBCURSES]) | |
340 | ||
341 | [# Check for headers.] | |
342 | AC_CHECK_HEADERS([ncurses/curses.h], [], | |
343 | [AC_CHECK_HEADERS([ncurses.h], [], | |
344 | [AC_CHECK_HEADERS([curses.h], [], | |
345 | [AC_MSG_ERROR([(n)curses header files are required to build `grub-emu'])])])]) | |
346 | [fi] | |
347 | AC_SUBST([enable_grub_emu]) | |
348 | ||
99fadbaa | 349 | AC_ARG_ENABLE([grub-fstest], |
350 | [AS_HELP_STRING([--enable-grub-fstest], | |
351 | [build and install the `grub-fstest' debugging utility])]) | |
352 | AC_SUBST([enable_grub_fstest]) | |
353 | ||
6a161fa9 | 354 | # Output files. |
b977bf01 | 355 | AC_CONFIG_LINKS([include/grub/cpu:include/grub/$target_cpu |
356 | include/grub/machine:include/grub/$target_cpu/$platform]) | |
7b455f4d | 357 | AC_CONFIG_FILES([Makefile gensymlist.sh genkernsyms.sh]) |
6a161fa9 | 358 | AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h]) |
359 | AC_OUTPUT |