configure.ac 12.8 KB
Newer Older
Niels Möller's avatar
Niels Möller committed
1
2
dnl -*- mode: shell-script; sh-indentation: 2; -*-

3
4
dnl Process this file with autoconf to produce a configure script.

Niels Möller's avatar
Niels Möller committed
5
AC_INIT([nettle], [2.0], [nettle-bugs@lists.lysator.liu.se])
6
AC_PREREQ(2.61)
7
8
9
10
AC_CONFIG_SRCDIR([arcfour.c])
# Needed to stop autoconf from looking for files in parent directories.
AC_CONFIG_AUX_DIR([.])

11
AC_CONFIG_HEADER([config.h])
12

13
14
15
16
LIBNETTLE_MAJOR=3
LIBNETTLE_MINOR=0

LIBHOGWEED_MAJOR=1
17
LIBHOGWEED_MINOR=1
18

19
20
AC_CANONICAL_HOST

21
22
23
24
25
26
# Command line options
AC_ARG_WITH(include-path,
  AC_HELP_STRING([--with-include-path], [A colon-separated list of directories to search for include files]),,
  [with_include_path=''])

if test x$with_include_path != x ; then
27
  CPPFLAGS="$CPPFLAGS -I`echo $with_include_path | sed 's/:/ -I/g'`"
28
29
30
31
32
33
34
fi

AC_ARG_WITH(lib-path,
  AC_HELP_STRING([--with-lib-path], [A colon-separated list of directories to search for libraries]),,
  [with_lib_path=''])

if test x$with_lib_path != x ; then
35
  LDFLAGS="$LDFLAGS -L`echo $with_lib_path | sed 's/:/ -L/g'`"
36
37
fi

38
39
40
41
AC_ARG_ENABLE(public-key,
  AC_HELP_STRING([--disable-public-key], [Disable public key algorithms]),,
  [enable_public_key=yes])

42
AC_ARG_ENABLE(assembler,
43
44
  AC_HELP_STRING([--disable-assembler],[Disable assembler code]),,
  [enable_assembler=yes])
45

46
AC_ARG_ENABLE(shared,
47
  AC_HELP_STRING([--enable-shared], [Build a shared library]),,
48
49
  [enable_shared=no])

50
51
52
53
54
AC_ARG_ENABLE(pic,
  AC_HELP_STRING([--disable-pic],
  [Do not try to compile library files as position independent code]),,
  [enable_pic=yes])

55
56
57
58
AC_ARG_ENABLE(openssl,
  AC_HELP_STRING([--disable-openssl], [Do not include openssl glue in the benchmark program]),,
  [enable_openssl=yes])
  
59
60
61
62
63
LSH_RPATH_INIT([`echo $with_lib_path | sed 's/:/ /g'` \
    `echo $exec_prefix | sed "s@^NONE@$prefix/lib@g" | sed "s@^NONE@$ac_default_prefix/lib@g"` \
    /usr/local/lib /sw/local/lib /sw/lib \
    /usr/gnu/lib /opt/gnu/lib /sw/gnu/lib /usr/freeware/lib /usr/pkg/lib])

64
# Checks for programs.
Niels Möller's avatar
Niels Möller committed
65
AC_PROG_CC
66
67
68
69
70
71
72
73

# When $CC foo.c -o foo creates both foo and foo.exe, autoconf picks
# up the foo.exe and sets exeext to .exe. That is correct for cygwin,
# which has some kind of magic link from foo to foo.exe, but not for
# rntcl. A better check for the cygwin case would check if the
# contents of foo and foo.exe are equal; in the rntcl case, foo is a
# sh script, and foo.exe is a windows executable.

Niels Möller's avatar
Niels Möller committed
74
if test "x$CC" = xrntcl ; then
75
    AC_MSG_NOTICE([Compiling with rntcl; clearing EXEEXT and disabling assembler])
76
77
    ac_exeext=''
    ac_cv_exeext=''
Niels Möller's avatar
Niels Möller committed
78
    EXEEXT=''
79
    enable_assembler=no
80
81
fi

82
83
84
85
86
87
88
89
# Used by the testsuite only
AC_PROG_CXX

AC_LANG_PUSH(C++)
AC_TRY_COMPILE([],[return 0;],[CXX_TESTS='cxx-test$(EXEEXT)'], [CXX_TESTS=''])
AC_SUBST([CXX_TESTS])
AC_LANG_POP

Niels Möller's avatar
Niels Möller committed
90
AC_PROG_MAKE_SET
Niels Möller's avatar
Niels Möller committed
91
AC_PROG_RANLIB
92
AC_CHECK_TOOL(NM, nm, strings)
93
94
# Used only for the GNU-stack configure test.
AC_CHECK_TOOL(OBJDUMP, objdump, false)
Niels Möller's avatar
Niels Möller committed
95

96
if test "x$ac_cv_prog_cc_stdc" = xno ; then
Niels Möller's avatar
Niels Möller committed
97
98
  AC_ERROR([the C compiler doesn't handle ANSI-C])
fi
99

100
101
AC_PROG_INSTALL

102
103
104
105
# According to the autoconf manual, needs install-sh from
# autoconf-2.60 or automake-1.10 to avoid races.
AC_PROG_MKDIR_P

106
107
LSH_DEPENDENCY_TRACKING

108
if test x$enable_dependency_tracking = xyes ; then
109
110
111
  # Since the makefiles use include to get the dependency files, we must
  # make sure that the files exist. We generate some more files than are
  # actually needed.
112

113
114
  AC_CONFIG_COMMANDS([dummy-dep-files],
  [(cd "$srcdir" && find . -name '*.c' -print) \
115
 | sed 's/\.c$//' | (while read f; do echo > "$f.o.d"; echo > "$f.po.d"; done)
116
])
117
fi
118

119
# Select assembler code
120
asm_path=
121
122
case "$host_cpu" in
  [i?86* | k[5-8]* | pentium* | athlon])
123
    asm_path=x86
124
    ;;
125
126
127
  [x86_64 | amd64])
    asm_path=x86_64
    ;;
128
  *sparc*)
129
130
131
132
133
    AC_TRY_COMPILE([
#if defined(__sparcv9) || defined(__arch64__)
#error 64-bit sparc
#endif
    ], [], [
134
      asm_path=sparc32
135
136
137
    ], [
      asm_path=sparc64
    ])
138
    ;;
139
140
141
  *)
    enable_assembler=no
    ;;
142
143
esac

144
# echo "enable_assembler: $enable_assembler, asm_path: $asm_path"
145

146
if test "x$enable_assembler" = xyes ; then
147
  if test -n "$asm_path"; then
Niels Möller's avatar
Niels Möller committed
148
    AC_MSG_NOTICE([Looking for assembler files in $asm_path/.])
149
    found=no
150
    for tmp_f in aes-encrypt-internal.asm aes-decrypt-internal.asm \
151
		 arcfour-crypt.asm md5-compress.asm sha1-compress.asm machine.m4; do
152
153
#       echo "Looking for $srcdir/$asm_path/$tmp_f"
      if test -f "$srcdir/$asm_path/$tmp_f"; then
154
#        echo found
155
        found=yes
156
        AC_CONFIG_LINKS($tmp_f:$asm_path/$tmp_f)
157
158
159
160
161
162
163
164
165
      fi
    done
    if test "$found" = no; then
      enable_assembler=no
      AC_MSG_WARN([No assembler files found.])
    fi
  fi
fi

166
167
168
LSH_CCPIC

SHLIBCFLAGS="$CCPIC"
169

170
171
case "$host_os" in
  cygwin*)
172
    LIBNETTLE_FORLINK='cygnettle-$(LIBNETTLE_MAJOR)-$(LIBNETTLE_MINOR).dll'
173
174
175
176
177
    LIBNETTLE_SONAME=''
    LIBNETTLE_FILE='libnettle.dll.a'
    LIBNETTLE_LINK='$(CC) $(LDFLAGS) -shared -Wl,--out-implib=$(LIBNETTLE_LIBFILE) -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive'
    LIBNETTLE_LIBS='-Wl,--no-whole-archive $(LIBS)'

178
    LIBHOGWEED_FORLINK='cyghogweed-$(LIBHOGWEED_MAJOR)-$(LIBHOGWEED_MINOR).dll'
179
    LIBHOGWEED_SONAME=''
180
    LIBHOGWEED_FILE='libhogweed.dll.a'
181
182
    LIBHOGWEED_LINK='$(CC) $(LDFLAGS) -shared -Wl,--out-implib=$(LIBHOGWEED_LIBFILE) -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive'
    LIBHOGWEED_LIBS='-Wl,--no-whole-archive $(LIBS)'
183
    ;;
Grant Robinson's avatar
Grant Robinson committed
184
  darwin*)
185
186
187
188
189
190
    LIBNETTLE_FORLINK=libnettle.dylib
    LIBNETTLE_SONAME='$(LIBNETTLE_FORLINK).$(LIBNETTLE_MAJOR)'
    LIBNETTLE_FILE='$(LIBNETTLE_SONAME).$(LIBNETTLE_MINOR)'
    LIBNETTLE_LINK='$(CC) -dynamiclib $(LDFLAGS)'
    LIBNETTLE_LIBS=''

191
    LIBHOGWEED_FORLINK=libhogweed.dylib
192
193
194
195
    LIBHOGWEED_SONAME='$(LIBHOGWEED_FORLINK).$(LIBHOGWEED_MAJOR)'
    LIBHOGWEED_FILE='$(LIBHOGWEED_SONAME).$(LIBHOGWEED_MINOR)'
    LIBHOGWEED_LINK='$(CC) -dynamiclib $(LDFLAGS)'
    LIBHOGWEED_LIBS=''
Grant Robinson's avatar
Grant Robinson committed
196
    ;;
197
  *)
198
199
200
201
202
203
    LIBNETTLE_FORLINK=libnettle.so
    LIBNETTLE_SONAME='$(LIBNETTLE_FORLINK).$(LIBNETTLE_MAJOR)'
    LIBNETTLE_FILE='$(LIBNETTLE_SONAME).$(LIBNETTLE_MINOR)'
    LIBNETTLE_LINK='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(LIBNETTLE_SONAME)'
    LIBNETTLE_LIBS=''

204
    LIBHOGWEED_FORLINK=libhogweed.so
205
206
207
    LIBHOGWEED_SONAME='$(LIBHOGWEED_FORLINK).$(LIBHOGWEED_MAJOR)'
    LIBHOGWEED_FILE='$(LIBHOGWEED_SONAME).$(LIBHOGWEED_MINOR)'
    LIBHOGWEED_LINK='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(LIBHOGWEED_SONAME)'
Niels Möller's avatar
Niels Möller committed
208
    # FIXME: It might make some sense to link with -lnettle -lgmp
209
    LIBHOGWEED_LIBS=''
210
211
    ;;
esac
212

213
214
215
216
if test "x$enable_pic" = xyes; then
  CCPIC_MAYBE="$CCPIC"
else
  CCPIC_MAYBE=''
217
fi
218
AC_SUBST([CCPIC_MAYBE])
219

220
ASM_SYMBOL_PREFIX=''
221
ASM_ELF_STYLE='no'
222
ASM_TYPE_FUNCTION=''
223
ASM_MARK_NOEXEC_STACK=''
224
ASM_ALIGN_LOG=''
225
226
227
228
229
230
231
232

if test x$enable_assembler = xyes ; then
  AC_CACHE_CHECK([if globals are prefixed by underscore],
  nettle_cv_asm_underscore,
  [ # Default is no underscore
    nettle_cv_asm_underscore=no
    AC_COMPILE_IFELSE(
      [int a_global_symbol;],
233
      [ $NM conftest.$OBJEXT >conftest.out
234
235
236
237
238
239
240
241
        if grep _a_global_symbol conftest.out >/dev/null ; then
          nettle_cv_asm_underscore=yes
        elif grep a_global_symbol conftest.out >/dev/null ; then
          nettle_cv_asm_underscore=no
        else
          AC_MSG_WARN([nm doesn't list a_global_symbol at all])
	fi],
      [AC_MSG_WARN([test program with a single global could not be compiled!?])])])
242
  if test x$nettle_cv_asm_underscore = xyes ; then
243
    ASM_SYMBOL_PREFIX='_'
244
  fi
245
246
247
248
249
250
251
252
253
254
255
256

  AC_CACHE_CHECK([if we should use a .note.GNU-stack section],
  nettle_cv_asm_gnu_stack,
  [ # Default
    nettle_cv_asm_gnu_stack=no

    cat >conftest.c <<EOF
int foo() { return 0; }
EOF
    nettle_compile="$CC $CFLAGS $CPPFLAGS -c conftest.c >conftest.out 2>&1"
    if AC_TRY_EVAL(nettle_compile); then
      cat conftest.out >&AC_FD_CC
257
      $OBJDUMP -x conftest.o | grep '\.note\.GNU-stack' > /dev/null \
258
259
260
261
262
263
264
265
266
267
268
      && nettle_cv_asm_gnu_stack=yes
    else
      cat conftest.out >&AC_FD_CC
      echo "configure: failed program was:" >&AC_FD_CC
      cat conftest.s >&AC_FD_CC
    fi
    rm -f conftest.*])
  if test x$nettle_cv_asm_gnu_stack = xyes ; then
    ASM_MARK_NOEXEC_STACK='.section .note.GNU-stack,"",@progbits'
  fi

269
270
271
  AC_CACHE_CHECK([for ELF-style .type,%function pseudo-ops],
    [nettle_cv_asm_type_percent_function],
    [GMP_TRY_ASSEMBLE([
272
273
.text
.globl foo
274
.type foo,%function
275
276
277
278
foo:
.Lend:

.size foo, .Lend - foo
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
],
       [nettle_cv_asm_type_percent_function=yes],
       [nettle_cv_asm_type_percent_function=no])])

dnl Needs double quote for the # character
  AC_CACHE_CHECK([[for ELF-style .type,#function pseudo-ops]],
    [nettle_cv_asm_type_hash_function],
    [GMP_TRY_ASSEMBLE([
.text
.globl foo
.type foo,#function
foo:
.Lend:

.size foo, .Lend - foo
],
       [nettle_cv_asm_type_hash_function=yes],
       [nettle_cv_asm_type_hash_function=no])])

  if test x$nettle_cv_asm_type_percent_function = xyes ; then
299
    ASM_ELF_STYLE='yes'
300
301
302
303
304
305
    ASM_TYPE_FUNCTION='%function'
  else
    if test x$nettle_cv_asm_type_hash_function = xyes ; then
      ASM_ELF_STYLE='yes'
      ASM_TYPE_FUNCTION='#function'
    fi
306
  fi
307
308
309
310
311
312
313
314
315
316
  AC_CACHE_CHECK([if .align assembly directive is logarithmic],
    [nettle_cv_asm_align_log],
    [GMP_TRY_ASSEMBLE([
.align 3
],
       [nettle_cv_asm_align_log=yes],
       [nettle_cv_asm_align_log=no])])
  if test x$nettle_cv_asm_align_log = xyes ; then
    ASM_ALIGN_LOG='yes'
  fi
317
318
319
fi

AC_SUBST(ASM_SYMBOL_PREFIX)
320
AC_SUBST(ASM_ELF_STYLE)
321
AC_SUBST(ASM_TYPE_FUNCTION)
322
AC_SUBST(ASM_MARK_NOEXEC_STACK)
323
AC_SUBST(ASM_ALIGN_LOG)
324

325
AC_SUBST(SHLIBCFLAGS)
326
327
328
329
330
331
332
333
334

AC_SUBST(LIBNETTLE_MAJOR)
AC_SUBST(LIBNETTLE_MINOR)
AC_SUBST(LIBNETTLE_FORLINK)
AC_SUBST(LIBNETTLE_SONAME)
AC_SUBST(LIBNETTLE_FILE)
AC_SUBST(LIBNETTLE_LINK)
AC_SUBST(LIBNETTLE_LIBS)

Niels Möller's avatar
Niels Möller committed
335
336
337
338
339
340
341
AC_SUBST(LIBHOGWEED_MAJOR)
AC_SUBST(LIBHOGWEED_MINOR)
AC_SUBST(LIBHOGWEED_FORLINK)
AC_SUBST(LIBHOGWEED_SONAME)
AC_SUBST(LIBHOGWEED_FILE)
AC_SUBST(LIBHOGWEED_LINK)
AC_SUBST(LIBHOGWEED_LIBS)
Niels Möller's avatar
Niels Möller committed
342

Niels Möller's avatar
Niels Möller committed
343
AC_PATH_PROG(M4, m4, m4)
344

345
# Checks for typedefs, structures, and compiler characteristics.
Niels Möller's avatar
Niels Möller committed
346
AC_C_CONST
Niels Möller's avatar
Niels Möller committed
347
348
349
350
AC_C_INLINE
AC_TYPE_UID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
Niels Möller's avatar
Niels Möller committed
351
352
# Used by eratosthenes.c
AC_CHECK_SIZEOF(long)
Niels Möller's avatar
Niels Möller committed
353

Niels Möller's avatar
Niels Möller committed
354
AC_CHECK_HEADERS([openssl/blowfish.h openssl/des.h openssl/cast.h openssl/aes.h],,
355
356
357
[enable_openssl=no
 break])

Niels Möller's avatar
Niels Möller committed
358
LSH_FUNC_ALLOCA
Niels Möller's avatar
Niels Möller committed
359

Niels Möller's avatar
Niels Möller committed
360
# Needed by the supplied memcmp.c
Niels Möller's avatar
Niels Möller committed
361
AC_C_BIGENDIAN
Niels Möller's avatar
Niels Möller committed
362
363
AC_REPLACE_FUNCS(memxor)

Niels Möller's avatar
Niels Möller committed
364
LSH_GCC_ATTRIBUTES
Niels Möller's avatar
Niels Möller committed
365

366
367
# According to Simon Josefsson, looking for uint32_t and friends in
# sys/types.h is needed on some systems, in particular cygwin.
368
AX_CREATE_STDINT_H([nettle-stdint.h], [sys/types.h])
369

Niels Möller's avatar
Niels Möller committed
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
# Check for file locking. We (AC_PROG_CC?) have already checked for
# sys/types.h and unistd.h.
AC_CACHE_CHECK([for fcntl file locking],
		nettle_cv_fcntl_locking,
[AC_TRY_COMPILE([
#if HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#if HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <fcntl.h>
],[
int op = F_SETLKW;
struct flock fl;
],
nettle_cv_fcntl_locking=yes,
nettle_cv_fcntl_locking=no)])

AH_TEMPLATE([HAVE_FCNTL_LOCKING], [Define if fcntl file locking is available])
if test "x$nettle_cv_fcntl_locking" = "xyes" ; then
  AC_DEFINE(HAVE_FCNTL_LOCKING)
fi

394
395
396
397
# Checks for libraries
AC_CHECK_LIB(gmp, __gmpz_getlimbn,,
    [AC_MSG_WARN(
[GNU MP not found, or not 3.1 or up, see http://www.swox.com/gmp.
398
399
400
Support for public key algorithms will be unavailable.])]
    enable_public_key=no)

401
402
AH_TEMPLATE([WITH_HOGWEED], [Defined if public key features are enabled])

403
if test "x$enable_public_key" = xyes ; then
404
405
406
407
408
409
410
411
  AC_DEFINE(WITH_HOGWEED)
  IF_HOGWEED=''
else
  IF_HOGWEED='#'
fi

if test "x$enable_shared" = xyes ; then
  IF_SHARED=''
412
else
413
  IF_SHARED='#'
414
415
fi

416
417
AC_SUBST(IF_HOGWEED)
AC_SUBST(IF_SHARED)
418

419
420
# Add -R flags needed to run programs linked with gmp
LSH_RPATH_FIX
421

422
423
OPENSSL_LIBFLAGS=''

424
# Check for openssl's libcrypto (used only for benchmarking)
425
426
427
428
429
430
431
432
433
434
435
436
if test x$enable_openssl = xyes ; then
  AC_CHECK_LIB(crypto, BF_ecb_encrypt,
    [OPENSSL_LIBFLAGS='-lcrypto'],
    [enable_openssl=no])
fi

AH_TEMPLATE([WITH_OPENSSL],
	    [Define if you have openssl's libcrypto (used for benchmarking)])

if test x$enable_openssl = xyes ; then
  AC_DEFINE(WITH_OPENSSL)
fi
437
438

AC_SUBST(OPENSSL_LIBFLAGS)
439

Niels Möller's avatar
Niels Möller committed
440
441
# Set these flags *last*, or else the test programs won't compile
if test x$GCC = xyes ; then
442
443
444
445
446
447
  # Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
  if "$CC" --version | grep '^2\.96$' 1>/dev/null 2>&1; then
    true
  else
    CFLAGS="$CFLAGS -ggdb3"
  fi
448
  # FIXME: It would be better to actually test if this option works and/or is needed.
Niels Möller's avatar
Niels Möller committed
449
  # Or perhaps use -funsigned-char.
450
451
452
  if "$CC" --version | grep 'gcc.* 4\.' 1>/dev/null 2>&1; then
    CFLAGS="$CFLAGS -Wno-pointer-sign"
  fi
453
454
455
  CFLAGS="$CFLAGS -Wall -W \
  -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
  -Wpointer-arith -Wbad-function-cast -Wnested-externs"
Niels Möller's avatar
Niels Möller committed
456
457
458

# Don't enable -Wcast-align as it results in tons of warnings in the
# DES code. And when using stdio.
459
460
# Don't enable -Waggregate-return, as that causes warnings for glibc
# inttypes.h.
Niels Möller's avatar
Niels Möller committed
461
fi
Niels Möller's avatar
Niels Möller committed
462

463
464
465
466
AC_CONFIG_FILES([config.make config.m4 Makefile])
AC_CONFIG_FILES([tools/Makefile testsuite/Makefile examples/Makefile])

AC_OUTPUT
467