summaryrefslogtreecommitdiff
path: root/configure.ac
blob: 1913f7c0167ba181dfe6263b7acceec0b2c64528 (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
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
AC_INIT(ObjFW, 0.3.1, js@webkeks.org)
AC_CONFIG_SRCDIR(src)

AC_CANONICAL_HOST

AC_LANG([Objective C])
AC_PROG_OBJC
AC_PROG_OBJCPP
AC_PROG_LN_S
AC_PROG_INSTALL
AC_PROG_EGREP

CPP="$OBJCPP"
CPPFLAGS="$CPPFLAGS $OBJCPPFLAGS"
OBJCFLAGS="$OBJCFLAGS -Wall -fexceptions -fobjc-exceptions"
OBJCFLAGS="$OBJCFLAGS -fconstant-string-class=OFConstString"

AX_CHECK_COMPILER_FLAGS(-pipe, [OBJCFLAGS="$OBJCFLAGS -pipe"])
AX_CHECK_COMPILER_FLAGS(-fno-common, [OBJCFLAGS="$OBJCFLAGS -fno-common"])
AX_CHECK_COMPILER_FLAGS(-fno-constant-cfstrings, [
	NO_CONST_CFSTRINGS="-fno-constant-cfstrings"
	OBJCFLAGS="$OBJCFLAGS -fno-constant-cfstrings"])
AC_SUBST(NO_CONST_CFSTRINGS)

AC_MSG_CHECKING(whether Objective C compiler supports fast enumeration)
AC_TRY_COMPILE([
	#import <objc/objc.h>

	@protocol OFFastEnumeration
	- (int)countByEnumeratingWithState: (void*)state
				   objects: (id*)objects
				     count: (int)count;
	@end
	], [
	id n = nil;
	for (id i in n);
	], [
	AC_DEFINE(OF_HAVE_FAST_ENUMERATION, 1,
		[Compiler support for Fast Enumeration])
	AC_MSG_RESULT(yes)
	], [
	AC_MSG_RESULT(no)])

AC_MSG_CHECKING(whether Objective C compiler supports properties)
AC_TRY_COMPILE([
	#import <objc/objc.h>

	@interface Foo
	{
		id bar;
	}

	@property (retain, nonatomic) id bar;
	@end
	], [
	Foo *foo = nil;
	[foo setBar: nil];
	[foo bar];
	], [
	AC_DEFINE(OF_HAVE_PROPERTIES, 1, [Compiler support for properties])
	AC_SUBST(PROPERTIESTESTS_M, "PropertiesTests.m")
	AC_MSG_RESULT(yes)
	], [
	AC_MSG_RESULT(no)])

AC_CHECK_HEADERS([objfw-rt.h objc/objc.h])

test x"$ac_cv_header_objfw_rt_h" = x"yes" && objc_runtime="ObjFW-RT"

if test x"$ac_cv_header_objc_objc_h" = x"yes"; then
	dnl TODO: This is ugly. Let's think of a better check.
	AC_EGREP_CPP(gnu, [
		#import <objc/objc.h>
		#ifdef __objc_INCLUDE_GNU
		gnu
		#endif
		],
		[test x"$objc_runtime" = "x" && objc_runtime="GNU"],
		[objc_runtime="Apple"])
fi

AC_MSG_CHECKING(which Objective C runtime we use)
case $objc_runtime in
	ObjFW-RT)
		AC_DEFINE(OF_OBJFW_RUNTIME, 1,
			[Whether we use the ObjFW runtime])
		AC_SUBST(GNU_RUNTIME, "-fgnu-runtime")
		OBJCFLAGS="$OBJCFLAGS -fgnu-runtime"
		LIBS="$LIBS -lobjfw-rt"
		;;
	Apple)
		AC_DEFINE(OF_APPLE_RUNTIME, 1,
			[Whether we use the Apple ObjC runtime])
		LIBS="$LIBS -lobjc"
		;;
	GNU)
		AC_DEFINE(OF_GNU_RUNTIME, 1,
			[Whether we use the GNU ObjC runtime])
		LIBS="$LIBS -lobjc"
		;;
	*)
		AC_MSG_RESULT(none)
		AC_MSG_ERROR(No ObjC runtime found! Please install ObjFW-RT!)
		;;
esac
AC_MSG_RESULT($objc_runtime)

AC_CHECK_FUNC(objc_getProperty,, [
	AC_DEFINE(NEED_OBJC_PROPERTIES_INIT, 1,
		[Whether objc_properties_init needs to be called])
	AC_SUBST(OBJC_PROPERTIES_M, "objc_properties.m")])

AC_CHECK_FUNC(objc_enumerationMutation, [
	AC_DEFINE(HAVE_OBJC_ENUMERATIONMUTATION, 1,
		[Whether we have objc_enumerationMutation])])

BUILDSYS_LIB
AC_DEFINE_UNQUOTED(PLUGIN_SUFFIX, "$PLUGIN_SUFFIX", [Suffix for plugins])
if test x"$PLUGIN_SUFFIX" != "x"; then
	AC_SUBST(OFPLUGIN_M, "OFPlugin.m")
	AC_SUBST(OFPLUGINTESTS_M, "OFPluginTests.m")
	AC_SUBST(TESTPLUGIN, "plugin")
	AC_DEFINE(OF_PLUGINS, 1, [Whether we have plugin support])
	AC_SUBST(OFPLUGINS_DEF, "-DOF_PLUGINS")
fi

case "$host_os" in
	darwin*)
		AC_SUBST(REEXPORT_LIBOBJC, [-Wl,-reexport-lobjc])
		AC_SUBST(LDFLAGS_REEXPORT, [-Wl,-reexport-lobjfw])
		;;
esac

AC_C_BIGENDIAN([
	AC_DEFINE(OF_BIG_ENDIAN, 1, [Whether we are big endian])
	AC_SUBST(ENDIANESS_DEF, "-DOF_BIG_ENDIAN")])

AC_MSG_CHECKING(for SIZE_MAX)
AC_EGREP_CPP(yes, [
	#include <stdint.h>
	#include <limits.h>

	#ifdef SIZE_MAX
	yes
	#endif
	], AC_MSG_RESULT(yes), [
	AC_MSG_RESULT(no)
	AC_MSG_CHECKING(for SIZE_T_MAX)
	AC_EGREP_CPP(yes, [
		#include <stdint.h>
		#include <limits.h>

		#ifdef SIZE_T_MAX
		yes
		#endif
		], [
		AC_MSG_RESULT(yes)
		size_max="SIZE_T_MAX"], [
		AC_MSG_RESULT(no)
		size_max="((size_t)-1)"])
	AC_DEFINE_UNQUOTED(SIZE_MAX, $size_max, [Maximum value for size_t])])

AC_CHECK_FUNC(asprintf, [
	have_asprintf="yes"
	AC_DEFINE(OF_HAVE_ASPRINTF, 1, [Whether we have asprintf])
	AC_SUBST(ASPRINTF_DEF, "-DOF_HAVE_ASPRINTF")
	], [
	have_asprintf="no"
	AC_SUBST(ASPRINTF_M, "asprintf.m")

	AC_MSG_CHECKING(whether snprintf returns something useful)
	AC_CACHE_VAL(ac_cv_snprintf_useful_ret, [
		AC_TRY_RUN([
			#include <stdio.h>

			int
			main()
			{
				return (snprintf(NULL, 0, "asd") == 3 ? 0 : 1);
			}],
			ac_cv_snprintf_useful_ret="yes",
			ac_cv_snprintf_useful_ret="no",
			ac_cv_snprintf_useful_ret="no")])
		AC_MSG_RESULT($ac_cv_snprintf_useful_ret)])
test x"$have_asprintf" != x"yes" -a x"$ac_cv_snprintf_useful_ret" != x"yes" && \
	AC_MSG_ERROR(No asprintf and no snprintf returning required space!)

AC_CHECK_LIB(dl, dlopen, LIBS="$LIBS -ldl")

AC_ARG_ENABLE(threads,
	AS_HELP_STRING([--disable-threads], [disable thread support]))
if test x"$enable_threads" != x"no"; then
	case "$host_os" in
	mingw*)
		AC_MSG_CHECKING(for threads)
		AC_MSG_RESULT(win32)
		;;
	*)
		ACX_PTHREAD([
			CPPLAGS="$CPPFLAGS $PTHREAD_CFLAGS"
			LIBS="$LIBS $PTHREAD_LIBS"
			AC_DEFINE(OF_HAVE_PTHREADS, 1,
				[Whether we have pthreads])
			AC_CHECK_FUNC(pthread_spin_lock, [
				AC_DEFINE(OF_HAVE_PTHREAD_SPINLOCKS, 1,
					[Whether we have pthread spinlocks])])
			AC_CHECK_FUNC(sched_yield, [
				AC_DEFINE(OF_HAVE_SCHED_YIELD, 1,
					[Whether we have sched_yield])])
			], [
			AC_MSG_ERROR(No supported threads found!)])
		;;
	esac

	AC_DEFINE(OF_THREADS, 1, [Whether we have threads])
	AC_SUBST(OFTHREAD_M, "OFThread.m")
	AC_SUBST(OFTHREADTESTS_M, "OFThreadTests.m")
	AC_SUBST(THREADING_H, "threading.h")

	AC_CHECK_FUNC(objc_sync_enter,, [
		AC_SUBST(OBJC_SYNC_M, "objc_sync.m")
		AC_DEFINE(NEED_OBJC_SYNC_INIT, 1,
			[Whether objc_sync_init needs to be called])])

	atomic_ops="none"

	AC_MSG_CHECKING(whether __sync_* works)
	AC_TRY_LINK([#include <stdint.h>], [
		int32_t i, j;
		if (__sync_add_and_fetch(&i, 1))
			j = __sync_sub_and_fetch(&i, 1);
		while (!__sync_bool_compare_and_swap(&i, 0, 1));
		], [
		AC_MSG_RESULT(yes)
		atomic_ops="gcc builtins"
		AC_DEFINE(OF_HAVE_GCC_ATOMIC_OPS, 1,
			[Whether gcc atomic operations are available])
		], [
		old_OBJCFLAGS="$OBJCFLAGS"
		OBJCFLAGS="$OBJCFLAGS -march=i486"
		AC_TRY_LINK([#include <stdint.h>], [
			int32_t i, j;
			if (__sync_add_and_fetch(&i, 1))
				j = __sync_sub_and_fetch(&i, 1);
			while (!__sync_bool_compare_and_swap(&i, 0, 1));
			], [
			AC_MSG_RESULT([yes, with -march=i486])
			atomic_ops="gcc builtins (with -march=i486)"
			AC_DEFINE(OF_HAVE_GCC_ATOMIC_OPS, 1,
				[Whether gcc atomic operations are available])
			AC_SUBST(ATOMIC_OBJCFLAGS, "-march=i486")
			], [
			AC_MSG_RESULT(no)
			OBJCFLAGS="$old_OBJCFLAGS"])])

	if test x"$atomic_ops" = x"none"; then
		AC_CHECK_HEADER(libkern/OSAtomic.h, [
			atomic_ops="libkern/OSAtomic.h"
			AC_DEFINE(OF_HAVE_LIBKERN_OSATOMIC_H, 1,
				[Whether we have libkern/OSAtomic.h])])
	fi
else
	dnl We can only have one thread - therefore everything is atomic
	atomic_ops="not needed"
fi

AC_MSG_CHECKING(for atomic operations)
if test x"$atomic_ops" != x"none"; then
	AC_DEFINE(OF_ATOMIC_OPS, 1, [Whether we have atomic operations])
	AC_SUBST(ATOMIC_H, "atomic.h")
fi
AC_MSG_RESULT($atomic_ops)

AC_CHECK_LIB(socket, socket, LIBS="$LIBS -lsocket")
AC_CHECK_LIB(ws2_32, main, LIBS="$LIBS -lws2_32")

AC_MSG_CHECKING(for getaddrinfo)
AC_TRY_COMPILE([
	#include <stddef.h>
	#ifndef _WIN32
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <netdb.h>
	#else
	#define _WIN32_WINNT 0x0501
	#include <ws2tcpip.h>
	#endif
	], [
	struct addrinfo ai;
	getaddrinfo(NULL, NULL, NULL, NULL);
	], [
	AC_MSG_RESULT(yes)
	AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether we have getaddrinfo])

	if test x"$enable_threads" != x"no"; then
		AC_MSG_CHECKING(whether getaddrinfo is thread-safe)

		case "$host_os" in
			darwin[[12345]].*)
				have_threadsafe_getaddrinfo="no"
				;;
			darwin*)
				have_threadsafe_getaddrinfo="yes"
				;;
			freebsd[[1234]].* | freebsd5.[[1234]]*)
				have_threadsafe_getaddrinfo="no"
				;;
			freebsd*)
				have_threadsafe_getaddrinfo="yes"
				;;
			netbsd[[123]].*)
				have_threadsafe_getaddrinfo="no"
				;;
			netbsd*)
				have_threadsafe_getaddrinfo="yes"
				;;
			solaris*)
				have_threadsafe_getaddrinfo="yes"
				;;
			*)
				have_threadsafe_getaddrinfo="unknown"
				;;
		esac

		if test x"$have_threadsafe_getaddrinfo" = x"unknown"; then
			AC_EGREP_CPP(yes, [
				#include <netdb.h>
				#ifdef h_errno
				yes
				#end
				],
				[have_threadsafe_getaddrinfo="yes"],
				[have_threadsafe_getaddrinfo="no"])
		fi

		test x"$have_threadsafe_getaddrinfo" = x"yes" && \
			AC_DEFINE(HAVE_THREADSAFE_GETADDRINFO, 1,
				[Whether getaddrinfo is thread-safe])

		AC_MSG_RESULT($have_threadsafe_getaddrinfo)
	fi
	], [
	AC_MSG_RESULT(no)])

AC_CHECK_FUNC(madvise, [AC_DEFINE(HAVE_MADVISE, 1, [Whether we have madvise])])

if test x"$GOBJC" = x"yes"; then
	OBJCFLAGS="$OBJCFLAGS -Werror"

	AC_MSG_CHECKING(whether gcc has bug objc/27438)
	AC_TRY_COMPILE([
		#import <objc/objc.h>

		@interface OFConstString
		{
			Class isa;
			const char *string;
			unsigned long size;
		}
		@end

		void *_OFConstStringClassReference;
		], [
		OFConstString *test = @"";
		test++; /* Get rid of unused variable warning */
		], [AC_MSG_RESULT(no)], [
		AC_MSG_RESULT([yes, adding -Wno-unused-variable])
		OBJCFLAGS="$OBJCFLAGS -Wno-unused-variable"
		AC_SUBST(NO_WARN_UNUSED, "-Wno-unused-variable")])

	AC_MSG_CHECKING(whether we need -Wno-strict-aliasing due to gcc bugs)
	AC_TRY_COMPILE([
		#import <objc/objc.h>

		@interface OFObject
		{
			Class isa;
		}
		@end

		static struct {
			Class isa;
		} object;
		], [
		OFObject *test = (OFObject*)&object;
		test++; /* Get rid of unused variable warning */
		], [AC_MSG_RESULT(no)], [
		AC_MSG_RESULT(yes)
		OBJCFLAGS="$OBJCFLAGS -Wno-strict-aliasing"])
fi

if test x"$cross_compiling" = x"yes"; then
	case "$host" in
		*-*-mingw*)
			AC_PATH_PROG(WINE, wine)

			if test x"$WINE" != "x"; then
				AC_SUBST(TESTS, "tests")
				AC_SUBST(TEST_LAUNCHER, "$WINE")
			fi
			;;
	esac
else
	AC_SUBST(TESTS, "tests")
fi

BUILDSYS_TOUCH_DEPS

dnl We don't call AC_PROG_CPP, but only AC_PROG_OBJCPP and set CPP to OBJCPP
dnl and add OBJCPPFLAGS to CPPFLAGS, thus we need to AC_SUBST these ourself
AC_SUBST(CPP)
AC_SUBST(CPPFLAGS)

AC_SUBST(PACKAGE, ObjFW)
AC_CONFIG_FILES([buildsys.mk extra.mk utils/objfw-config])
AC_CONFIG_HEADERS([config.h src/objfw-defs.h])
AC_OUTPUT