summaryrefslogtreecommitdiffhomepage
path: root/configure
blob: e1651d08ae3fc289a02294a3386a0a9f460e7d4d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
#!/bin/sh
# we are no longer lazy.

# this script respects both CFLAGS and CFLAGS_CMDLINE,
# as well as both LDFLAGS and LDFLAGS_CMDLINE, however
# the latter variable of each pair should be preferred.

error_msg()
{
	echo $@ >&2
}


init_vars()
{
	mb_project_dir=$(cd `dirname $0` ; pwd)
	mb_pwd=`pwd`

	if [ x"$mb_config" = x ]; then
		. $mb_project_dir/config.project || exit 2
	else
		. "$mb_config" || exit 2
	fi

	# dirs
	mb_prefix=$PREFIX
	mb_bindir=$BINDIR
	mb_libdir=$LIBDIR
	mb_includedir=$INCLUDEDIR
	mb_syslibdir=$LIBDIR
	mb_mandir=$MANDIR
	mb_docdir=$DOCDIR
	mb_libexecdir=$LIBEXECDIR


	# build
	mb_build=$BUILD
	mb_host=$HOST
	mb_target=$TARGET
	mb_arch=$ARCH
	mb_toolchain=$TOOLCHAIN
	mb_sysroot=$SYSROOT
	mb_cross_compile=$CROSS_COMPILE
	mb_shell=$SHELL

	# switches
	mb_cflags=$CFLAGS
	mb_cflags_debug=$CFLAGS_DEBUG
	mb_cflags_common=$CFLAGS_COMMON
	mb_cflags_cmdline=$CFLAGS_CMDLINE
	mb_cflags_config=$CFLAGS_CONFIG
	mb_cflags_sysroot=$CFLAGS_SYSROOT
	mb_cflags_path=$CFLAGS_PATH

	mb_ldflags=$LDFLAGS
	mb_ldflags_debug=$LDFLAGS_DEBUG
	mb_ldflags_common=$LDFLAGS_COMMON
	mb_ldflags_cmdline=$LDFLAGS_CMDLINE
	mb_ldflags_config=$LDFLAGS_CONFIG
	mb_ldflags_sysroot=$LDFLAGS_SYSROOT
	mb_ldflags_path=$LDFLAGS_PATH

	mb_pe_subsystem=$PE_SUBSYSTEM
	mb_pe_image_base=$PE_IMAGE_BASE
	mb_pe_config_defs=$PE_CONFIG_DEFS

	mb_elf_eh_frame=$ELF_EH_FRAME
	mb_elf_hash_style=$ELF_HASH_STYLE
	mb_elf_config_defs=$ELF_CONFIG_DEFS

	# overrides
	mb_native_cc=$NATIVE_CC
	mb_native_os=$NATIVE_OS
	mb_native_os_bits=$NATIVE_OS_BITS
	mb_native_os_underscore=$NATIVE_OS_UNDERSCORE
}


verify_build_directory()
{
	if [ x"$mb_project_dir" = x"$mb_pwd" ]; then
		if [ x"$mb_require_out_of_tree" = xyes ]; then
			error_msg "$mb_package: out-of-tree builds are required."
			error_msg "please invoke configure again from a clean build directory."
			exit 2
		else
			mb_project_dir='.'
		fi
	fi
}


common_defaults()
{
	# dirs
	[ -z "$mb_prefix" ] 		&& mb_prefix=$mb_default_prefix
	[ -z "$mb_bindir" ] 		&& mb_bindir=$mb_default_bindir
	[ -z "$mb_libdir" ] 		&& mb_libdir=$mb_default_libdir
	[ -z "$mb_includedir" ]		&& mb_includedir=$mb_default_includedir
	[ -z "$mb_syslibdir" ] 		&& mb_syslibdir=$mb_default_syslibdir
	[ -z "$mb_mandir" ] 		&& mb_mandir=$mb_default_mandir
	[ -z "$mb_docdir" ] 		&& mb_docdir=$mb_default_docdir
	[ -z "$mb_libexecdir" ]		&& mb_libexecdir=$mb_default_libexecdir

	# build
	[ -z "$mb_build" ] 		&& mb_build=$mb_default_build
	[ -z "$mb_host" ] 		&& mb_host=$mb_default_host
	[ -z "$mb_target" ] 		&& mb_target=$mb_default_target
	[ -z "$mb_arch" ] 		&& mb_arch=$mb_default_arch
	[ -z "$mb_toolchain" ] 		&& mb_toolchain=$mb_default_toolchain
	[ -z "$mb_sysroot" ] 		&& mb_sysroot=$mb_default_sysroot
	[ -z "$mb_cross_compile" ] 	&& mb_cross_compile=$mb_default_cross_compile
	[ -z "$mb_shell" ] 		&& mb_shell=$mb_default_shell

	# switches
	[ -z "$mb_cflags_debug" ]	&& mb_cflags_debug=$mb_default_cflags_debug
	[ -z "$mb_cflags_common" ]	&& mb_cflags_common=$mb_default_cflags_common
	[ -z "$mb_cflags_cmdline" ]	&& mb_cflags_cmdline=$mb_default_cflags_cmdline
	[ -z "$mb_cflags_config" ]	&& mb_cflags_config=$mb_default_cflags_config
	[ -z "$mb_cflags_sysroot" ]	&& mb_cflags_sysroot=$mb_default_cflags_sysroot
	[ -z "$mb_cflags_path" ]	&& mb_cflags_path=$mb_default_cflags_path

	[ -z "$mb_ldflags_debug" ]	&& mb_ldflags_debug=$mb_default_ldflags_debug
	[ -z "$mb_ldflags_common" ]	&& mb_ldflags_common=$mb_default_ldflags_common
	[ -z "$mb_ldflags_cmdline" ]	&& mb_ldflags_cmdline=$mb_default_ldflags_cmdline
	[ -z "$mb_ldflags_config" ]	&& mb_ldflags_config=$mb_default_ldflags_config
	[ -z "$mb_ldflags_sysroot" ]	&& mb_ldflags_sysroot=$mb_default_ldflags_sysroot
	[ -z "$mb_ldflags_path" ]	&& mb_ldflags_path=$mb_default_ldflags_path

	[ -z "$mb_pe_subsystem" ]	&& mb_pe_subsystem=$mb_default_pe_subsystem
	[ -z "$mb_pe_image_base" ]	&& mb_pe_image_base=$mb_default_pe_image_base
	[ -z "$mb_pe_config_defs" ]	&& mb_pe_config_defs=$mb_default_pe_config_defs

	[ -z "$mb_elf_eh_frame" ]	&& mb_elf_eh_frame=$mb_default_elf_eh_frame
	[ -z "$mb_elf_hash_style" ]	&& mb_elf_hash_style=$mb_default_elf_hash_style
	[ -z "$mb_elf_config_defs" ]	&& mb_elf_config_defs=$mb_default_elf_config_defs

	# host/target
	[ -z "$mb_host" ] 		&& mb_host=$mb_target

	# sysroot
	if [ x"$mb_sysroot" != x ]; then
		if [ x"$mb_cflags_sysroot" = x ]; then
			mb_cflags_sysroot="--sysroot=$mb_sysroot"
		fi

		if [ x"$mb_ldflags_sysroot" = x ]; then
			mb_ldflags_sysroot="-Wl,--sysroot,$mb_sysroot"
		fi
	fi

	# debug
	if [ x"$mb_debug" = xyes ]; then
		if [ x"$mb_cflags_debug" = x ]; then
			mb_cflags_debug='-g3 -O0'
		fi
	fi

	# toolchain
	if [ x"$mb_toolchain" != x ]; then
		if [ x"$mb_native_cc" = x ]; then
			mb_native_cc=$mb_toolchain
		fi
	fi
}


native_defaults()
{
	# CC (when set, must be valid)
	if [ x"$CC" != x ]; then
		$CC -dM -E - < /dev/null > /dev/null || exit 2
	fi

	# toolchain
	[ -z "$mb_native_cc" ] && mb_native_cc=$CC
	[ -z "$mb_native_cc" ] && mb_native_cc='cc'
	$mb_native_cc -dM -E - < /dev/null > /dev/null 2>/dev/null || mb_native_cc=

	[ -z "$mb_native_cc" ] && mb_native_cc='gcc'
	$mb_native_cc -dM -E - < /dev/null > /dev/null 2>/dev/null || mb_native_cc=

	[ -z "$mb_native_cc" ] && mb_native_cc='clang'
	$mb_native_cc -dM -E - < /dev/null > /dev/null 2>/dev/null || mb_native_cc=

	if [ x"$mb_native_cc" = x ]; then
		error_msg "config error: could not find a working native compiler."
		exit 2
	fi

	if [ x"$mb_toolchain" = x ]; then
		$mb_native_cc -dM -E - < /dev/null | grep '__clang__' > /dev/null && mb_toolchain='clang'
	fi

	if [ x"$mb_toolchain" = x ]; then
		$mb_native_cc -dM -E - < /dev/null | grep '__GCC' > /dev/null && mb_toolchain='gcc'
	fi

	if [ x"$mb_toolchain" = x ]; then
		error_msg "config error: could not identify the native compiler."
		exit 2
	fi


	# host
	if [ x"$mb_host" = x ]; then
		mb_host='native'
	fi


	# os
	mb_native_os=`uname | tr '[:upper:]' '[:lower:]'`

	mb_native_os_sizeof_pointer=`$mb_native_cc -dM -E - < /dev/null \
			| grep __SIZEOF_POINTER__  \
			| cut -d ' ' -f3`

	mb_native_os_bits=`expr '8' '*' '0'"$mb_native_os_sizeof_pointer"`

	if [ $mb_native_os_bits = 32 ]; then
		mb_native_os_underscore='_'
	else
		mb_native_os_underscore=''
	fi

	if [ x"$mb_native_os_sizeof_pointer" = x ]; then
		error_msg "config error: could not determine size of pointer on native system."
		exit 2
	fi

	[ -z "$mb_native_os" ] 			&& mb_native_os=$mb_native_os
	[ -z "$mb_native_os_bits" ] 		&& mb_native_os_bits=$mb_native_os_bits
	[ -z "$mb_native_os_underscore" ]	&& mb_native_os_underscore=$mb_native_os_underscore
}


cross_defaults()
{
	if [ x"$mb_cross_compile" = x ] && [ x"$mb_host" != xnative ]; then
		mb_cross_compile=$mb_host'-'
	fi
}


config_copy()
{
	sed 		-e 's^@package@^'"$mb_package"'^g' 				\
			-e 's^@project_dir@^'"$mb_project_dir"'^g'			\
											\
			-e 's^@build@^'"$mb_build"'^g'					\
			-e 's^@host@^'"$mb_host"'^g'					\
			-e 's^@target@^'"$mb_target"'^g'				\
			-e 's^@arch@^'"$mb_arch"'^g'					\
			-e 's^@toolchain@^'"$mb_toolchain"'^g'				\
			-e 's^@sysroot@^'"$mb_sysroot"'^g'				\
			-e 's^@cross_compile@^'"$mb_cross_compile"'^g'			\
			-e 's^@shell@^'"$mb_shell"'^g'					\
											\
			-e 's^@cflags@^'"$mb_cflags"'^g'				\
			-e 's^@cflags_debug@^'"$mb_cflags_debug"'^g'			\
			-e 's^@cflags_common@^'"$mb_cflags_common"'^g'			\
			-e 's^@cflags_cmdline@^'"$mb_cflags $mb_cflags_cmdline"'^g'	\
			-e 's^@cflags_config@^'"$mb_cflags_config"'^g'			\
			-e 's^@cflags_sysroot@^'"$mb_cflags_sysroot"'^g'		\
			-e 's^@cflags_path@^'"$mb_cflags_path"'^g'			\
											\
			-e 's^@ldflags@^'"$mb_ldflags"'^g'				\
			-e 's^@ldflags_debug@^'"$mb_ldflags_debug"'^g'			\
			-e 's^@ldflags_common@^'"$mb_ldflags_common"'^g'		\
			-e 's^@ldflags_cmdline@^'"$mb_ldflags $mb_ldflags_cmdline"'^g'	\
			-e 's^@ldflags_config@^'"$mb_ldflags_config"'^g'		\
			-e 's^@ldflags_sysroot@^'"$mb_ldflags_sysroot"'^g'		\
			-e 's^@ldflags_path@^'"$mb_ldflags_path"'^g'			\
											\
			-e 's^@pe_subsystem@^'"$mb_pe_subsystem"'^g'			\
			-e 's^@pe_image\_base@^'"$mb_pe_image_base"'^g'			\
			-e 's^@pe_config\_defs@^'"$mb_pe_config_defs"'^g'		\
											\
			-e 's^@elf_eh\_frame@^'"$mb_elf_eh_frame"'^g'			\
			-e 's^@elf_hash\_style@^'"$mb_elf_hash_style"'^g'		\
			-e 's^@elf_config\_defs@^'"$mb_elf_config_defs"'^g'		\
											\
			-e 's^@prefix@^'"$mb_prefix"'^g'				\
			-e 's^@bindir@^'"$mb_bindir"'^g'				\
			-e 's^@libdir@^'"$mb_libdir"'^g'				\
			-e 's^@includedir@^'"$mb_includedir"'^g'			\
			-e 's^@syslibdir@^'"$mb_syslibdir"'^g'				\
			-e 's^@mandir@^'"$mb_mandir"'^g'				\
			-e 's^@docdir@^'"$mb_docdir"'^g'				\
			-e 's^@libexecdir@^'"$mb_libexecdir"'^g'			\
											\
			-e 's^@native_cc@^'"$mb_native_cc"'^g'				\
			-e 's^@native_os@^'"$mb_native_os"'^g'				\
			-e 's^@native_os_bits@^'"$mb_native_os_bits"'^g'			\
			-e 's^@native_os_underscore@^'"$mb_native_os_underscore"'^g'	\
		$mb_project_dir/Makefile.in > $mb_pwd/Makefile
}



# one: init
init_vars
verify_build_directory


# two: args
for arg ; do
	case "$arg" in
		--help)	usage
			;;

		# dirs
		--prefix=*)
			mb_prefix=${arg#*=}
			;;
		--bindir=*)
			mb_bindir=${arg#*=}
			;;
		--libdir=*)
			mb_libdir=${arg#*=}
			;;
		--includedir=*)
			mb_includedir=${arg#*=}
			;;
		--syslibdir=*)
			mb_syslibdir=${arg#*=}
			;;
		--mandir=*)
			mb_mandir=${arg#*=}
			;;
		--libexecdir=*)
			mb_libexecdir=${arg#*=}
			;;


		# build
		--build=*)
			mb_build=${arg#*=}
			;;
		--host=*)
			mb_host=${arg#*=}
			;;
		--target=*)
			mb_target=${arg#*=}
			;;
		--arch=*)
			mb_arch=${arg#*=}
			;;
		--toolchain=*)
			mb_toolchain=${arg#*=}
			;;
		--sysroot=*)
			mb_sysroot=${arg#*=}
			;;
		--cross-compile=*)
			mb_cross_compile=${arg#*=}
			;;
		--shell=*)
			mb_shell=${arg#*=}
			;;
		--debug)
			mb_debug='yes'
			;;
		*)
			error_msg ${arg#}: "unsupported config argument."
			exit 2
			;;
	esac
done



# three: defaults
common_defaults
native_defaults
cross_defaults



# four: config
config_copy


# all done
exit 0