configure.ac 13.3 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.

5
AC_INIT([nettle], [2.1], [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
LIBNETTLE_MAJOR=3
14
LIBNETTLE_MINOR=1
15

16
17
LIBHOGWEED_MAJOR=2
LIBHOGWEED_MINOR=0
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
  [x86_64 | amd64])
126
127
128
129
130
131
132
133
134
    AC_TRY_COMPILE([
#if defined(__i386__)
#error 32-bit x86
#endif
    ], [], [
      asm_path=x86_64
    ], [
      asm_path=x86
    ])
135
    ;;
136
  *sparc*)
137
138
139
140
141
    AC_TRY_COMPILE([
#if defined(__sparcv9) || defined(__arch64__)
#error 64-bit sparc
#endif
    ], [], [
142
      asm_path=sparc32
143
144
145
    ], [
      asm_path=sparc64
    ])
146
    ;;
147
148
149
  *)
    enable_assembler=no
    ;;
150
151
esac

152
# echo "enable_assembler: $enable_assembler, asm_path: $asm_path"
153

154
if test "x$enable_assembler" = xyes ; then
155
  if test -n "$asm_path"; then
Niels Möller's avatar
Niels Möller committed
156
    AC_MSG_NOTICE([Looking for assembler files in $asm_path/.])
157
    found=no
158
    for tmp_f in aes-encrypt-internal.asm aes-decrypt-internal.asm \
159
		 arcfour-crypt.asm md5-compress.asm sha1-compress.asm machine.m4; do
160
161
#       echo "Looking for $srcdir/$asm_path/$tmp_f"
      if test -f "$srcdir/$asm_path/$tmp_f"; then
162
#        echo found
163
        found=yes
164
        AC_CONFIG_LINKS($tmp_f:$asm_path/$tmp_f)
165
166
167
168
169
170
171
172
173
      fi
    done
    if test "$found" = no; then
      enable_assembler=no
      AC_MSG_WARN([No assembler files found.])
    fi
  fi
fi

174
175
176
LSH_CCPIC

SHLIBCFLAGS="$CCPIC"
177

178
179
case "$host_os" in
  cygwin*)
180
    LIBNETTLE_FORLINK='cygnettle-$(LIBNETTLE_MAJOR)-$(LIBNETTLE_MINOR).dll'
181
182
183
184
185
    LIBNETTLE_SONAME=''
    LIBNETTLE_FILE='libnettle.dll.a'
    LIBNETTLE_LINK='$(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)'

186
    LIBHOGWEED_FORLINK='cyghogweed-$(LIBHOGWEED_MAJOR)-$(LIBHOGWEED_MINOR).dll'
187
    LIBHOGWEED_SONAME=''
188
    LIBHOGWEED_FILE='libhogweed.dll.a'
189
190
    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 $(LIBS)'
191
    ;;
Grant Robinson's avatar
Grant Robinson committed
192
  darwin*)
193
194
195
196
197
198
    LIBNETTLE_FORLINK=libnettle.dylib
    LIBNETTLE_SONAME='$(LIBNETTLE_FORLINK).$(LIBNETTLE_MAJOR)'
    LIBNETTLE_FILE='$(LIBNETTLE_SONAME).$(LIBNETTLE_MINOR)'
    LIBNETTLE_LINK='$(CC) -dynamiclib $(LDFLAGS)'
    LIBNETTLE_LIBS=''

199
    LIBHOGWEED_FORLINK=libhogweed.dylib
200
201
202
203
    LIBHOGWEED_SONAME='$(LIBHOGWEED_FORLINK).$(LIBHOGWEED_MAJOR)'
    LIBHOGWEED_FILE='$(LIBHOGWEED_SONAME).$(LIBHOGWEED_MINOR)'
    LIBHOGWEED_LINK='$(CC) -dynamiclib $(LDFLAGS)'
    LIBHOGWEED_LIBS=''
Grant Robinson's avatar
Grant Robinson committed
204
    ;;
205
  *)
206
207
208
209
210
211
    LIBNETTLE_FORLINK=libnettle.so
    LIBNETTLE_SONAME='$(LIBNETTLE_FORLINK).$(LIBNETTLE_MAJOR)'
    LIBNETTLE_FILE='$(LIBNETTLE_SONAME).$(LIBNETTLE_MINOR)'
    LIBNETTLE_LINK='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(LIBNETTLE_SONAME)'
    LIBNETTLE_LIBS=''

212
    LIBHOGWEED_FORLINK=libhogweed.so
213
214
    LIBHOGWEED_SONAME='$(LIBHOGWEED_FORLINK).$(LIBHOGWEED_MAJOR)'
    LIBHOGWEED_FILE='$(LIBHOGWEED_SONAME).$(LIBHOGWEED_MINOR)'
215
216
217
218
219
220
221
    LIBHOGWEED_LINK='$(CC) $(LDFLAGS) -L. -shared -Wl,-soname=$(LIBHOGWEED_SONAME)'
    # Requested by debian, to make linking with only -lhogweed work
    # (does not work in general, e.g., with static linking all of
    # -lhogweed -lgmp -lnettle are still required). Also makes dlopen
    # of libhogweed.so work, without having to use RTLD_GLOBAL.
    # Depends on -L. above, to locate nettle.so.
    LIBHOGWEED_LIBS='-lnettle -lgmp'
222
223
    ;;
esac
224

225
226
227
228
if test "x$enable_pic" = xyes; then
  CCPIC_MAYBE="$CCPIC"
else
  CCPIC_MAYBE=''
229
fi
230
AC_SUBST([CCPIC_MAYBE])
231

232
ASM_SYMBOL_PREFIX=''
233
ASM_ELF_STYLE='no'
234
ASM_TYPE_FUNCTION=''
235
ASM_MARK_NOEXEC_STACK=''
236
ASM_ALIGN_LOG=''
237
238
239
240
241
242
243
244

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;],
245
      [ $NM conftest.$OBJEXT >conftest.out
246
247
248
249
250
251
252
253
        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!?])])])
254
  if test x$nettle_cv_asm_underscore = xyes ; then
255
    ASM_SYMBOL_PREFIX='_'
256
  fi
257
258
259
260
261
262
263
264
265
266
267
268

  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
269
      $OBJDUMP -x conftest.o | grep '\.note\.GNU-stack' > /dev/null \
270
271
272
273
274
275
276
277
278
279
280
      && nettle_cv_asm_gnu_stack=yes
    else
      cat conftest.out >&AC_FD_CC
      echo "configure: failed program was:" >&AC_FD_CC
      cat conftest.s >&AC_FD_CC
    fi
    rm -f conftest.*])
  if test x$nettle_cv_asm_gnu_stack = xyes ; then
    ASM_MARK_NOEXEC_STACK='.section .note.GNU-stack,"",@progbits'
  fi

281
282
283
  AC_CACHE_CHECK([for ELF-style .type,%function pseudo-ops],
    [nettle_cv_asm_type_percent_function],
    [GMP_TRY_ASSEMBLE([
284
285
.text
.globl foo
286
.type foo,%function
287
288
289
290
foo:
.Lend:

.size foo, .Lend - foo
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
],
       [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$nettle_cv_asm_type_percent_function = xyes ; then
311
    ASM_ELF_STYLE='yes'
312
313
314
315
316
317
    ASM_TYPE_FUNCTION='%function'
  else
    if test x$nettle_cv_asm_type_hash_function = xyes ; then
      ASM_ELF_STYLE='yes'
      ASM_TYPE_FUNCTION='#function'
    fi
318
  fi
319
320
321
322
323
324
325
326
327
328
  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
329
330
331
fi

AC_SUBST(ASM_SYMBOL_PREFIX)
332
AC_SUBST(ASM_ELF_STYLE)
333
AC_SUBST(ASM_TYPE_FUNCTION)
334
AC_SUBST(ASM_MARK_NOEXEC_STACK)
335
AC_SUBST(ASM_ALIGN_LOG)
336

337
AC_SUBST(SHLIBCFLAGS)
338
339
340
341
342
343
344
345
346

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
347
348
349
350
351
352
353
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
354

Niels Möller's avatar
Niels Möller committed
355
AC_PATH_PROG(M4, m4, m4)
356

357
# Checks for typedefs, structures, and compiler characteristics.
Niels Möller's avatar
Niels Möller committed
358
AC_C_CONST
Niels Möller's avatar
Niels Möller committed
359
360
361
362
AC_C_INLINE
AC_TYPE_UID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
Niels Möller's avatar
Niels Möller committed
363
364
# Used by eratosthenes.c
AC_CHECK_SIZEOF(long)
Niels Möller's avatar
Niels Möller committed
365

Niels Möller's avatar
Niels Möller committed
366
AC_CHECK_HEADERS([openssl/blowfish.h openssl/des.h openssl/cast.h openssl/aes.h],,
367
368
369
[enable_openssl=no
 break])

Niels Möller's avatar
Niels Möller committed
370
LSH_FUNC_ALLOCA
Niels Möller's avatar
Niels Möller committed
371

Niels Möller's avatar
Niels Möller committed
372
# Needed by the supplied memcmp.c
Niels Möller's avatar
Niels Möller committed
373
AC_C_BIGENDIAN
Niels Möller's avatar
Niels Möller committed
374
375
AC_REPLACE_FUNCS(memxor)

Niels Möller's avatar
Niels Möller committed
376
LSH_GCC_ATTRIBUTES
Niels Möller's avatar
Niels Möller committed
377

378
379
# According to Simon Josefsson, looking for uint32_t and friends in
# sys/types.h is needed on some systems, in particular cygwin.
380
AX_CREATE_STDINT_H([nettle-stdint.h], [sys/types.h])
381

Niels Möller's avatar
Niels Möller committed
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
# 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

406
407
408
409
# 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.
410
411
412
Support for public key algorithms will be unavailable.])]
    enable_public_key=no)

Niels Möller's avatar
Niels Möller committed
413
414
415
416
417
418
# Add -R flags needed to run programs linked with gmp
LSH_RPATH_FIX

AH_TEMPLATE([HAVE_MPZ_POWM_SEC], [Define if mpz_powm_sec is available (appeared in GMP-5)])
AC_CHECK_FUNC(__gmpz_powm_sec, [AC_DEFINE(HAVE_MPZ_POWM_SEC)])

419
420
AH_TEMPLATE([WITH_HOGWEED], [Defined if public key features are enabled])

421
if test "x$enable_public_key" = xyes ; then
422
423
424
425
426
427
428
429
  AC_DEFINE(WITH_HOGWEED)
  IF_HOGWEED=''
else
  IF_HOGWEED='#'
fi

if test "x$enable_shared" = xyes ; then
  IF_SHARED=''
430
else
431
  IF_SHARED='#'
432
433
fi

434
435
AC_SUBST(IF_HOGWEED)
AC_SUBST(IF_SHARED)
436

437
438
OPENSSL_LIBFLAGS=''

439
# Check for openssl's libcrypto (used only for benchmarking)
440
441
442
443
444
445
446
447
448
449
450
451
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
452
453

AC_SUBST(OPENSSL_LIBFLAGS)
454

Niels Möller's avatar
Niels Möller committed
455
456
# Set these flags *last*, or else the test programs won't compile
if test x$GCC = xyes ; then
457
458
459
460
461
462
  # Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
  if "$CC" --version | grep '^2\.96$' 1>/dev/null 2>&1; then
    true
  else
    CFLAGS="$CFLAGS -ggdb3"
  fi
463
  # FIXME: It would be better to actually test if this option works and/or is needed.
Niels Möller's avatar
Niels Möller committed
464
  # Or perhaps use -funsigned-char.
465
466
467
  if "$CC" --version | grep 'gcc.* 4\.' 1>/dev/null 2>&1; then
    CFLAGS="$CFLAGS -Wno-pointer-sign"
  fi
468
469
470
  CFLAGS="$CFLAGS -Wall -W \
  -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
  -Wpointer-arith -Wbad-function-cast -Wnested-externs"
Niels Möller's avatar
Niels Möller committed
471
472
473

# Don't enable -Wcast-align as it results in tons of warnings in the
# DES code. And when using stdio.
474
475
# Don't enable -Waggregate-return, as that causes warnings for glibc
# inttypes.h.
Niels Möller's avatar
Niels Möller committed
476
fi
Niels Möller's avatar
Niels Möller committed
477

478
479
480
481
AC_CONFIG_FILES([config.make config.m4 Makefile])
AC_CONFIG_FILES([tools/Makefile testsuite/Makefile examples/Makefile])

AC_OUTPUT
482