configure.ac 25.1 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], [3.1], [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
14
LIBNETTLE_MAJOR=5
LIBNETTLE_MINOR=0
15

Niels Möller's avatar
Niels Möller committed
16
LIBHOGWEED_MAJOR=4
17
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
47
48
49
AC_ARG_ENABLE(static,
  AC_HELP_STRING([--disable-static], [Do not build any static library]),,
  [enable_static=yes])

50
AC_ARG_ENABLE(shared,
51
52
  AC_HELP_STRING([--disable-shared], [Do not build any shared library]),,
  [enable_shared=yes])
53

54
55
56
57
58
AC_ARG_ENABLE(pic,
  AC_HELP_STRING([--disable-pic],
  [Do not try to compile library files as position independent code]),,
  [enable_pic=yes])

59
60
61
AC_ARG_ENABLE(openssl,
  AC_HELP_STRING([--disable-openssl], [Do not include openssl glue in the benchmark program]),,
  [enable_openssl=yes])
62
63
64
65
66

AC_ARG_ENABLE(gcov,
  AC_HELP_STRING([--enable-gcov], [Instrument for gcov (requires a modern gcc)]),,
  [enable_gcov=no])

Sam Thursfield's avatar
Sam Thursfield committed
67
AC_ARG_ENABLE(documentation,
68
  AC_HELP_STRING([--disable-documentation], [Omit building and installing the documentation. (default=auto)]),,
Sam Thursfield's avatar
Sam Thursfield committed
69
70
  [enable_documentation=auto])

71
72
73
74
AC_ARG_ENABLE(arm-neon,
  AC_HELP_STRING([--enable-arm-neon], [Enable ARM Neon assembly. (default=auto)]),,
  [enable_arm_neon=auto])

75
76
77
78
79
80
81
82
83
84
85
AC_ARG_ENABLE(mini-gmp,
  AC_HELP_STRING([--enable-mini-gmp], [Enable mini-gmp, used instead of libgmp.]),,
  [enable_mini_gmp=no])

if test "x$enable_mini_gmp" = xyes ; then
  NETTLE_USE_MINI_GMP=1
else
  NETTLE_USE_MINI_GMP=0
fi
AC_SUBST([NETTLE_USE_MINI_GMP])

86
87
88
89
90
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])

91
# Checks for programs.
Niels Möller's avatar
Niels Möller committed
92
AC_PROG_CC
93
94
95
96
97
98
99
100

# 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
101
if test "x$CC" = xrntcl ; then
102
    AC_MSG_NOTICE([Compiling with rntcl; clearing EXEEXT and disabling assembler])
103
104
    ac_exeext=''
    ac_cv_exeext=''
Niels Möller's avatar
Niels Möller committed
105
    EXEEXT=''
106
    enable_assembler=no
107
108
fi

109
110
111
112
# Used by the testsuite only
AC_PROG_CXX

AC_LANG_PUSH(C++)
113
114
AC_TRY_COMPILE([],[return 0;],[IF_CXX=''], [IF_CXX='#'])
AC_SUBST([IF_CXX])
115
116
AC_LANG_POP

Niels Möller's avatar
Niels Möller committed
117
AC_PROG_MAKE_SET
Niels Möller's avatar
Niels Möller committed
118
AC_PROG_RANLIB
119
AC_CHECK_TOOL(NM, nm, strings)
120
121
# Used only for the GNU-stack configure test.
AC_CHECK_TOOL(OBJDUMP, objdump, false)
122
AC_CHECK_TOOL(AR, ar, false)
Niels Möller's avatar
Niels Möller committed
123

124
if test "x$ac_cv_prog_cc_stdc" = xno ; then
125
  AC_ERROR([the C compiler doesn't handle ANSI-C]) #'
Niels Möller's avatar
Niels Möller committed
126
fi
127

128
129
AC_PROG_INSTALL

130
131
132
133
# According to the autoconf manual, needs install-sh from
# autoconf-2.60 or automake-1.10 to avoid races.
AC_PROG_MKDIR_P

134
135
AC_PROG_LN_S

Niels Möller's avatar
Niels Möller committed
136
137
138
139
# Compiler tests for the build system
GMP_PROG_CC_FOR_BUILD
GMP_PROG_EXEEXT_FOR_BUILD

140
141
LSH_DEPENDENCY_TRACKING

142
if test x$enable_dependency_tracking = xyes ; then
143
144
145
  # 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.
146

147
  AC_CONFIG_COMMANDS([dummy-dep-files],
148
  [(cd "$srcdir" && find . '(' -name '*.c' -o -name '*.cxx' ')' -print) \
149
 | sed 's/\.cx*$//' | (while read f; do \
150
151
      test -f "$f.o.d" || echo > "$f.o.d"; \
   done)
152
])
153
fi
154

155
# Figure out ABI. Currently, configurable only by setting CFLAGS.
156
157
ABI=standard

158
case "$host_cpu" in
159
  [x86_64 | amd64])
160
    AC_TRY_COMPILE([
161
162
#if defined(__x86_64__) || defined(__arch64__)
#error 64-bit x86
163
164
#endif
    ], [], [
165
      ABI=32
166
    ], [
167
      ABI=64
168
    ])
169
    ;;
170
  *sparc*)
171
172
173
174
175
    AC_TRY_COMPILE([
#if defined(__sparcv9) || defined(__arch64__)
#error 64-bit sparc
#endif
    ], [], [
176
      ABI=32
177
    ], [
178
      ABI=64
179
    ])
180
    ;;
181
182
183
esac

if test "x$ABI" != xstandard ; then
184
  AC_MSG_NOTICE([Compiler uses $ABI-bit ABI. To change, set CC.])
185
186
187
188
189
190
191
192
193
  if test "$libdir" = '${exec_prefix}/lib' ; then
    # Try setting a better default
    case "$host_cpu:$host_os:$ABI" in
      *:solaris*:32|*:sunos*:32)
	libdir='${exec_prefix}/lib'
	;;
      *:solaris*:64|*:sunos*:64)
	libdir='${exec_prefix}/lib/64'
	;;
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
      # Linux conventions are a mess... According to the Linux File
      # Hierarchy Standard, all architectures except IA64 puts 32-bit
      # libraries in lib, and 64-bit in lib64. Some distributions,
      # e.g., Fedora and Gentoo, adhere to this standard, while at
      # least Debian has decided to put 64-bit libraries in lib and
      # 32-bit libraries in lib32.
      
      # We try to figure out the convention, except if we're cross
      # compiling. We use lib${ABI} if /usr/lib${ABI} exists and
      # appears to not be a symlink to a different name.
      *:linux*:32|*:linux*:64)
	if test "$cross_compiling" = yes ; then
          AC_MSG_WARN([Cross compiling for linux. Can't guess if libraries go in lib${ABI} or lib.]); dnl '
	else
	  # The dash builtin pwd tries to be "helpful" and remember
209
	  # symlink names. Use -P option, and hope it's portable enough.
210
	  test -d /usr/lib${ABI} \
211
	    && (cd /usr/lib${ABI} && pwd -P | grep >/dev/null "/lib${ABI}"'$') \
212
213
	    && libdir='${exec_prefix}/'"lib${ABI}"
	fi
214
215
216
217
218
219
220
221
222
223
224
	;;
      # On freebsd, it seems 32-bit libraries are in lib32,
      # and 64-bit in lib. Don't know about "kfreebsd", does
      # it follow the Linux fhs conventions?
      *:freebsd*:32)
	libdir='${exec_prefix}/lib32'
	;;
      *:freebsd*:64)
	libdir='${exec_prefix}/lib'
	;;
      *)
225
        AC_MSG_WARN([Don't know where to install $ABI-bit libraries on this system.]); dnl '
226
227
228
229

    esac
    AC_MSG_NOTICE([Libraries to be installed in $libdir.])
  fi
230
231
232
233
fi

# Select assembler code
asm_path=
234
235
236
if test "x$enable_assembler" = xyes ; then
  case "$host_cpu" in
    [i?86* | k[5-8]* | pentium* | athlon])
237
      asm_path=x86
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
      ;;
    [x86_64 | amd64])
      if test "$ABI" = 64 ; then
	asm_path=x86_64
      else
	asm_path=x86
      fi
      ;;
    *sparc*)
      if test "$ABI" = 64 ; then
	asm_path=sparc64
      else
	asm_path=sparc32
      fi
      ;;
253
    armv6* | armv7*)
254
255
      NETTLE_CHECK_ARM_NEON

256
257
      asm_path="arm/v6 arm"
      
258
259
260
      if test "x$enable_arm_neon" = xyes ; then
	asm_path="arm/neon $asm_path"
      fi
261
      ;;
262
263
264
    arm*)
      asm_path=arm
      ;;
265
266
267
268
269
    *)
      enable_assembler=no
      ;;
  esac
fi
270
271
272
273
274

# Files which replace a C source file (or otherwise don't correspond
# to a new object file).
asm_replace_list="aes-encrypt-internal.asm aes-decrypt-internal.asm \
		arcfour-crypt.asm camellia-crypt-internal.asm \
Niels Möller's avatar
Niels Möller committed
275
		md5-compress.asm memxor.asm poly1305-internal.asm \
Niels Möller's avatar
Niels Möller committed
276
		chacha-core-internal.asm \
277
278
		salsa20-crypt.asm salsa20-core-internal.asm \
		serpent-encrypt.asm serpent-decrypt.asm \
Niels Möller's avatar
Niels Möller committed
279
		sha1-compress.asm sha256-compress.asm sha512-compress.asm \
280
		sha3-permute.asm umac-nh.asm umac-nh-n.asm machine.m4"
Niels Möller's avatar
Niels Möller committed
281

282
# Assembler files which generate additional object files if they are used.
283
asm_nettle_optional_list="gcm-hash8.asm"
284
asm_hogweed_optional_list=""
285
if test "x$enable_public_key" = "xyes" ; then
286
  asm_hogweed_optional_list="ecc-192-modp.asm ecc-224-modp.asm \
287
    ecc-25519-modp.asm ecc-256-redc.asm ecc-384-modp.asm ecc-521-modp.asm"
288
289
fi

290
291
OPT_ASM_NETTLE_SOURCES=""
OPT_ASM_HOGWEED_SOURCES=""
292

293
asm_file_list=""
294

295
if test "x$enable_assembler" = xyes ; then
296
  if test -n "$asm_path"; then
297
    AC_MSG_NOTICE([Looking for assembler files in $asm_path.])
298
    for tmp_f in $asm_replace_list ; do
299
300
301
302
303
304
305
      for asm_dir in $asm_path ; do
        if test -f "$srcdir/$asm_dir/$tmp_f"; then
	  asm_file_list="$asm_file_list $tmp_f"
          AC_CONFIG_LINKS($tmp_f:$asm_dir/$tmp_f)
	  break
        fi
      done
306
    done
307
308
    dnl Workaround for AC_CONFIG_LINKS, which complains if we use the
    dnl same destination argument $tmp_f multiple times.
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
    for tmp_n in $asm_nettle_optional_list ; do
      for asm_dir in $asm_path ; do
	if test -f "$srcdir/$asm_dir/$tmp_n"; then
	  asm_file_list="$asm_file_list $tmp_n"
	  AC_CONFIG_LINKS($tmp_n:$asm_dir/$tmp_n)
	  while read tmp_func ; do
	    AC_DEFINE_UNQUOTED(HAVE_NATIVE_$tmp_func)
	    eval HAVE_NATIVE_$tmp_func=yes
	  done <<EOF
[`sed -n 's/[^ 	]*PROLOGUE(_*\(nettle_\)*\([^)]*\)).*$/\2/p' < "$srcdir/$asm_dir/$tmp_n"`]
EOF
	  OPT_ASM_NETTLE_SOURCES="$OPT_ASM_NETTLE_SOURCES $tmp_n"
	  break
	fi
      done
    done	
    for tmp_h in $asm_hogweed_optional_list ; do
326
      for asm_dir in $asm_path ; do
327
328
329
	if test -f "$srcdir/$asm_dir/$tmp_h"; then
	  asm_file_list="$asm_file_list $tmp_h"
	  AC_CONFIG_LINKS($tmp_h:$asm_dir/$tmp_h)
330
331
332
333
	  while read tmp_func ; do
	    AC_DEFINE_UNQUOTED(HAVE_NATIVE_$tmp_func)
	    eval HAVE_NATIVE_$tmp_func=yes
	  done <<EOF
334
[`sed -n 's/[^ 	]*PROLOGUE(_*\(nettle_\)*\([^)]*\)).*$/\2/p' < "$srcdir/$asm_dir/$tmp_h"`]
335
EOF
336
	  OPT_ASM_HOGWEED_SOURCES="$OPT_ASM_HOGWEED_SOURCES $tmp_h"
337
338
339
	  break
	fi
      done
340
    done	
341
    if test -z "$asm_file_list"; then
342
343
344
345
      enable_assembler=no
      AC_MSG_WARN([No assembler files found.])
    fi
  fi
346
347
348
349
350
351
352
353
  case "$host_os" in
    darwin*)
      ASM_RODATA='.section __TEXT,__const'
      ;;
    *)
      ASM_RODATA='.section .rodata'
      ;;
  esac
354
355
fi

356
357
AC_SUBST([OPT_ASM_NETTLE_SOURCES])
AC_SUBST([OPT_ASM_HOGWEED_SOURCES])
358
AC_SUBST([ASM_RODATA])
359
360
361
362
363
364
365
366

AH_VERBATIM([HAVE_NATIVE],
[/* Define to 1 each of the following for which a native (ie. CPU specific)
    implementation of the corresponding routine exists.  */
#undef HAVE_NATIVE_ecc_192_modp
#undef HAVE_NATIVE_ecc_192_redc
#undef HAVE_NATIVE_ecc_224_modp
#undef HAVE_NATIVE_ecc_224_redc
367
#undef HAVE_NATIVE_ecc_25519_modp
368
369
370
371
372
#undef HAVE_NATIVE_ecc_256_modp
#undef HAVE_NATIVE_ecc_256_redc
#undef HAVE_NATIVE_ecc_384_modp
#undef HAVE_NATIVE_ecc_384_redc
#undef HAVE_NATIVE_ecc_521_modp
373
#undef HAVE_NATIVE_ecc_521_redc
374
#undef HAVE_NATIVE_gcm_hash8])
375

376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
# Besides getting correct dependencies, the explicit rules also tell
# make that the .s files "ought to exist", so they are preferred over
# .c files.
AC_CONFIG_COMMANDS([asm.d],
    [ for f in $asm_file_list
      do
        case $f in
	  *.asm)
	    echo "`basename $f .asm`.s : $f "'$(srcdir)/asm.m4 machine.m4 config.m4'
	    ;;
	esac
      done > asm.d
    ],
    [ asm_file_list="$asm_file_list" ]
)

392
393
394
395
396
397
if test "x$enable_pic" = xyes; then
    LSH_CCPIC
else
    CCPIC=''
fi
AC_SUBST(CCPIC)
398

399
400
401
IF_DLL='#'
LIBNETTLE_FILE_SRC='$(LIBNETTLE_FORLINK)'
LIBHOGWEED_FILE_SRC='$(LIBHOGWEED_FORLINK)'
402
EMULATOR=''
Martin Storsjö's avatar
Martin Storsjö committed
403
W64_ABI=no
404

405
case "$host_os" in
Martin Storsjö's avatar
Martin Storsjö committed
406
  mingw32*|cygwin*)
407
408
409
410
    # The actual DLLs, e.g. libnettle-$major-$minor.dll, are normally
    # installed into the bin dir (or more exactly $libdir/../bin, for
    # automake), while libnettle.dll.a, which is a stub file for
    # linking to the DLL, is installed into the lib dir.
Martin Storsjö's avatar
Martin Storsjö committed
411
412
413
414
415
416
417
418
419
420
    case "$host_os" in
      mingw32*)
        LIBNETTLE_FORLINK='libnettle-$(LIBNETTLE_MAJOR)-$(LIBNETTLE_MINOR).dll'
        LIBHOGWEED_FORLINK='libhogweed-$(LIBHOGWEED_MAJOR)-$(LIBHOGWEED_MINOR).dll'
        ;;
      cygwin*)
        LIBNETTLE_FORLINK='cygnettle-$(LIBNETTLE_MAJOR)-$(LIBNETTLE_MINOR).dll'
        LIBHOGWEED_FORLINK='cyghogweed-$(LIBHOGWEED_MAJOR)-$(LIBHOGWEED_MINOR).dll'
        ;;
    esac
421
422
423
424
425
426
427
428
429
430
    if test "x$cross_compiling" = xyes ; then
	case "$ABI" in
	    64)
		EMULATOR=wine64
		;;
	    *)
		EMULATOR=wine
		;;
	esac
    fi
Martin Storsjö's avatar
Martin Storsjö committed
431
432
433
    if test "x$ABI" = x64 ; then
        W64_ABI=yes
    fi
434
435
    LIBNETTLE_SONAME=''
    LIBNETTLE_FILE='libnettle.dll.a'
436
    LIBNETTLE_FILE_SRC='$(LIBNETTLE_FILE)'
437
    LIBNETTLE_LINK='$(CC) $(CFLAGS) $(LDFLAGS) -shared -Wl,--out-implib=$(LIBNETTLE_FILE) -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive'
438
439
440
    LIBNETTLE_LIBS='-Wl,--no-whole-archive $(LIBS)'

    LIBHOGWEED_SONAME=''
441
    LIBHOGWEED_FILE='libhogweed.dll.a'
442
    LIBHOGWEED_FILE_SRC='$(LIBHOGWEED_FILE)'
443
    LIBHOGWEED_LINK='$(CC) $(CFLAGS) $(LDFLAGS) -shared -Wl,--out-implib=$(LIBHOGWEED_FILE) -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive'
444
    LIBHOGWEED_LIBS='-Wl,--no-whole-archive $(LIBS) libnettle.dll.a'
445
    IF_DLL=''
446
    ;;
Grant Robinson's avatar
Grant Robinson committed
447
  darwin*)
448
    LIBNETTLE_FORLINK=libnettle.dylib
449
450
    LIBNETTLE_SONAME='libnettle.$(LIBNETTLE_MAJOR).dylib'
    LIBNETTLE_FILE='libnettle.$(LIBNETTLE_MAJOR).$(LIBNETTLE_MINOR).dylib'
451
    LIBNETTLE_LINK='$(CC) $(CFLAGS) -dynamiclib $(LDFLAGS) -install_name ${libdir}/$(LIBNETTLE_SONAME) -compatibility_version $(LIBNETTLE_MAJOR) -current_version $(LIBNETTLE_MAJOR).$(LIBNETTLE_MINOR)'
452
453
    LIBNETTLE_LIBS=''

454
    LIBHOGWEED_FORLINK=libhogweed.dylib
455
456
    LIBHOGWEED_SONAME='libhogweed.$(LIBHOGWEED_MAJOR).dylib'
    LIBHOGWEED_FILE='libhogweed.$(LIBHOGWEED_MAJOR).$(LIBHOGWEED_MINOR).dylib'
457
    LIBHOGWEED_LINK='$(CC) $(CFLAGS) -dynamiclib -L. $(LDFLAGS) -install_name ${libdir}/$(LIBHOGWEED_SONAME) -compatibility_version $(LIBHOGWEED_MAJOR) -current_version $(LIBHOGWEED_MAJOR).$(LIBHOGWEED_MINOR)'
458
    LIBHOGWEED_LIBS='-lnettle $(LIBS)'
Grant Robinson's avatar
Grant Robinson committed
459
    ;;
460
461
462
463
464
465
466
  solaris*)
    # Sun's ld uses -h to set the soname, and this option is passed
    # through by both Sun's compiler and gcc. Might not work with GNU
    # ld, but it's unusual to use GNU ld on Solaris.
    LIBNETTLE_FORLINK=libnettle.so
    LIBNETTLE_SONAME='$(LIBNETTLE_FORLINK).$(LIBNETTLE_MAJOR)'
    LIBNETTLE_FILE='$(LIBNETTLE_SONAME).$(LIBNETTLE_MINOR)'
467
    LIBNETTLE_LINK='$(CC) $(CFLAGS) $(LDFLAGS) -G -h $(LIBNETTLE_SONAME)'
468
469
470
471
472
    LIBNETTLE_LIBS=''

    LIBHOGWEED_FORLINK=libhogweed.so
    LIBHOGWEED_SONAME='$(LIBHOGWEED_FORLINK).$(LIBHOGWEED_MAJOR)'
    LIBHOGWEED_FILE='$(LIBHOGWEED_SONAME).$(LIBHOGWEED_MINOR)'
473
    LIBHOGWEED_LINK='$(CC) $(CFLAGS) $(LDFLAGS) -G -h $(LIBHOGWEED_SONAME)'
474
    LIBHOGWEED_LIBS='libnettle.so $(LIBS)'
475
    ;;
476
  *)
477
478
479
    LIBNETTLE_FORLINK=libnettle.so
    LIBNETTLE_SONAME='$(LIBNETTLE_FORLINK).$(LIBNETTLE_MAJOR)'
    LIBNETTLE_FILE='$(LIBNETTLE_SONAME).$(LIBNETTLE_MINOR)'
480
    LIBNETTLE_LINK='$(CC) $(CFLAGS) $(LDFLAGS) -shared -Wl,-soname=$(LIBNETTLE_SONAME)'
481
482
    LIBNETTLE_LIBS=''

483
    LIBHOGWEED_FORLINK=libhogweed.so
484
485
    LIBHOGWEED_SONAME='$(LIBHOGWEED_FORLINK).$(LIBHOGWEED_MAJOR)'
    LIBHOGWEED_FILE='$(LIBHOGWEED_SONAME).$(LIBHOGWEED_MINOR)'
486
    LIBHOGWEED_LINK='$(CC) $(CFLAGS) $(LDFLAGS) -shared -Wl,-soname=$(LIBHOGWEED_SONAME)'
487
488
489
490
    # 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.
491
    LIBHOGWEED_LIBS='libnettle.so $(LIBS)'
492
493
    ;;
esac
494

495
ASM_SYMBOL_PREFIX=''
496
ASM_ELF_STYLE='no'
497
ASM_COFF_STYLE='no'
498
499
500
# GNU as default is to use @
ASM_TYPE_FUNCTION='@function'
ASM_TYPE_PROGBITS='@progbits'
501
ASM_MARK_NOEXEC_STACK=''
502
ASM_ALIGN_LOG=''
503
504
505
506
507
508
509

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(
510
      [AC_LANG_SOURCE([int a_global_symbol;])],
511
      [ $NM conftest.$OBJEXT >conftest.out
512
513
514
515
516
        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
517
          AC_MSG_WARN([nm does not list a_global_symbol at all])
518
519
	fi],
      [AC_MSG_WARN([test program with a single global could not be compiled!?])])])
520
  if test x$nettle_cv_asm_underscore = xyes ; then
521
    ASM_SYMBOL_PREFIX='_'
522
  fi
523

524
525
526
  AC_CACHE_CHECK([for ELF-style .type,%function pseudo-ops],
    [nettle_cv_asm_type_percent_function],
    [GMP_TRY_ASSEMBLE([
527
528
.text
.globl foo
529
.type foo,%function
530
531
532
533
foo:
.Lend:

.size foo, .Lend - foo
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
],
       [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$nettle_cv_asm_type_percent_function = xyes ; then
554
    ASM_ELF_STYLE='yes'
555
    ASM_TYPE_FUNCTION='%function'
556
    ASM_TYPE_PROGBITS='%progbits'
557
558
559
560
  else
    if test x$nettle_cv_asm_type_hash_function = xyes ; then
      ASM_ELF_STYLE='yes'
      ASM_TYPE_FUNCTION='#function'
561
      ASM_TYPE_PROGBITS='#progbits'
562
    fi
563
  fi
564

565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
  AC_CACHE_CHECK([for COFF-style .type directive],
    [nettle_cv_asm_coff_type],
      [GMP_TRY_ASSEMBLE([
.text
.globl _foo
.def _foo
.scl 2
.type 32
.endef
_foo:
],
        [nettle_cv_asm_coff_type=yes],
        [nettle_cv_asm_coff_type=no])])
  if test "x$nettle_cv_asm_coff_type" = "xyes" ; then
    ASM_COFF_STYLE=yes
  fi

582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
  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
      $OBJDUMP -x conftest.o | grep '\.note\.GNU-stack' > /dev/null \
      && nettle_cv_asm_gnu_stack=yes
    else
      cat conftest.out >&AC_FD_CC
      echo "configure: failed program was:" >&AC_FD_CC
      cat conftest.s >&AC_FD_CC
    fi
    rm -f conftest.*])
  if test x$nettle_cv_asm_gnu_stack = xyes ; then
    ASM_MARK_NOEXEC_STACK='.section .note.GNU-stack,"",TYPE_PROGBITS'
  fi

605
606
607
608
609
610
611
  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])])
612
  ASM_ALIGN_LOG="$nettle_cv_asm_align_log"
613
614
615
fi

AC_SUBST(ASM_SYMBOL_PREFIX)
616
AC_SUBST(ASM_ELF_STYLE)
617
AC_SUBST(ASM_COFF_STYLE)
618
AC_SUBST(ASM_TYPE_FUNCTION)
619
AC_SUBST(ASM_TYPE_PROGBITS)
620
AC_SUBST(ASM_MARK_NOEXEC_STACK)
621
AC_SUBST(ASM_ALIGN_LOG)
Martin Storsjö's avatar
Martin Storsjö committed
622
AC_SUBST(W64_ABI)
623
AC_SUBST(EMULATOR)
624

625
626
627
628
629
AC_SUBST(LIBNETTLE_MAJOR)
AC_SUBST(LIBNETTLE_MINOR)
AC_SUBST(LIBNETTLE_FORLINK)
AC_SUBST(LIBNETTLE_SONAME)
AC_SUBST(LIBNETTLE_FILE)
630
AC_SUBST(LIBNETTLE_FILE_SRC)
631
632
633
AC_SUBST(LIBNETTLE_LINK)
AC_SUBST(LIBNETTLE_LIBS)

Niels Möller's avatar
Niels Möller committed
634
635
636
637
638
AC_SUBST(LIBHOGWEED_MAJOR)
AC_SUBST(LIBHOGWEED_MINOR)
AC_SUBST(LIBHOGWEED_FORLINK)
AC_SUBST(LIBHOGWEED_SONAME)
AC_SUBST(LIBHOGWEED_FILE)
639
AC_SUBST(LIBHOGWEED_FILE_SRC)
Niels Möller's avatar
Niels Möller committed
640
641
AC_SUBST(LIBHOGWEED_LINK)
AC_SUBST(LIBHOGWEED_LIBS)
Niels Möller's avatar
Niels Möller committed
642

Niels Möller's avatar
Niels Möller committed
643
AC_PATH_PROG(M4, m4, m4)
644

645
646
647
648
if test "x$enable_gcov" = "xyes"; then
  CFLAGS="$CFLAGS -ftest-coverage -fprofile-arcs"
fi

649
# Checks for typedefs, structures, and compiler characteristics.
Niels Möller's avatar
Niels Möller committed
650
AC_C_CONST
Niels Möller's avatar
Niels Möller committed
651
652
653
654
AC_C_INLINE
AC_TYPE_UID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
Niels Möller's avatar
Niels Möller committed
655
AC_CHECK_SIZEOF(long)
656
AC_CHECK_SIZEOF(size_t)
Niels Möller's avatar
Niels Möller committed
657

658
AC_CHECK_HEADERS([openssl/blowfish.h openssl/des.h openssl/cast.h openssl/aes.h openssl/ecdsa.h],,
659
660
661
[enable_openssl=no
 break])

662
663
AC_CHECK_HEADERS([valgrind/memcheck.h])

Niels Möller's avatar
Niels Möller committed
664
LSH_FUNC_ALLOCA
Niels Möller's avatar
Niels Möller committed
665
LSH_FUNC_STRERROR
Niels Möller's avatar
Niels Möller committed
666

Niels Möller's avatar
Niels Möller committed
667
AC_C_BIGENDIAN
Niels Möller's avatar
Niels Möller committed
668

Niels Möller's avatar
Niels Möller committed
669
LSH_GCC_ATTRIBUTES
Niels Möller's avatar
Niels Möller committed
670

671
672
# According to Simon Josefsson, looking for uint32_t and friends in
# sys/types.h is needed on some systems, in particular cygwin.
673
AX_CREATE_STDINT_H([nettle-stdint.h], [sys/types.h])
674

Niels Möller's avatar
Niels Möller committed
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
# 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

699
# Checks for libraries
700
if test "x$enable_public_key" = "xyes" ; then
701
702
703
704
705
706
707
708
709
710
  if test "x$enable_mini_gmp" = "xno" ; then
    AC_CHECK_LIB(gmp, __gmpz_getlimbn,,
        [AC_MSG_WARN(
    [GNU MP not found, or not 3.1 or up, see http://gmplib.org/.
    Support for public key algorithms will be unavailable.])]
        enable_public_key=no)
  
    # Add -R flags needed to run programs linked with gmp
    LSH_RPATH_FIX
  fi
711
712
fi

713
nettle_cv_gmp_numb_bits=0
714
715
if test "x$enable_public_key" = "xyes" ; then
  # Check for gmp limb size
716
717
718
719
720
721
722
723
724
  if test "x$enable_mini_gmp" = "xyes" ; then
    AC_MSG_CHECKING([for mini-gmp limb size])
    # With mini-gmp, mp_limb_t is always unsigned long.
    AC_COMPUTE_INT(nettle_cv_gmp_numb_bits, [(sizeof(unsigned long) * CHAR_BIT)],
        [#include <limits.h>],
        [AC_MSG_FAILURE([cannot find value of GMP_NUMB_BITS])])
  
    AC_MSG_RESULT([$nettle_cv_gmp_numb_bits bits])
  else
725
726
727
728
729
730
731
732
    AC_MSG_CHECKING([for GMP limb size])
    AC_COMPUTE_INT(nettle_cv_gmp_numb_bits, [GMP_NUMB_BITS],
        [#include <gmp.h>],
        [AC_MSG_FAILURE([cannot find value of GMP_NUMB_BITS])])
  
    AC_MSG_RESULT([$nettle_cv_gmp_numb_bits bits])
  fi
fi
Niels Möller's avatar
Niels Möller committed
733

734
735
736
GMP_NUMB_BITS="$nettle_cv_gmp_numb_bits"
AC_SUBST([GMP_NUMB_BITS])

737
738
AH_TEMPLATE([WITH_HOGWEED], [Defined if public key features are enabled])

739
if test "x$enable_public_key" = xyes ; then
740
741
742
743
744
745
  AC_DEFINE(WITH_HOGWEED)
  IF_HOGWEED=''
else
  IF_HOGWEED='#'
fi

746
747
748
749
750
751
if test "x$enable_static" = xyes ; then
  IF_STATIC=''
else
  IF_STATIC='#'
fi

752
753
if test "x$enable_shared" = xyes ; then
  IF_SHARED=''
754
  IF_NOT_SHARED='#'
755
else
756
  IF_SHARED='#'
757
  IF_NOT_SHARED=''
758
759
fi

Sam Thursfield's avatar
Sam Thursfield committed
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
# Documentation tools
if test "x$enable_documentation" != "xno"; then
  AC_PATH_PROG(MAKEINFO, makeinfo, not-found)

  if test "x$MAKEINFO" != "xnot-found"; then
    enable_documentation=yes
    AC_SUBST(MAKEINFO)
  else
    if test "x$enable_documentation" == "xauto" ; then
      enable_documentation=no
    else
      AC_MSG_ERROR([Cannot find 'makeinfo', required for documentation.])
    fi
  fi
fi

if test "x$enable_documentation" = "xyes" ; then
  IF_DOCUMENTATION=''
else
  IF_DOCUMENTATION='#'
fi

782
783
784
785
786
787
if test "x$enable_mini_gmp" = "xyes" ; then
  IF_MINI_GMP=''
else
  IF_MINI_GMP='#'
fi
  
788
AC_SUBST(IF_HOGWEED)
789
AC_SUBST(IF_STATIC)
790
AC_SUBST(IF_SHARED)
791
AC_SUBST(IF_NOT_SHARED)
Sam Thursfield's avatar
Sam Thursfield committed
792
AC_SUBST(IF_DOCUMENTATION)
793
AC_SUBST(IF_DLL)
794
AC_SUBST(IF_MINI_GMP)
795

796
797
OPENSSL_LIBFLAGS=''

798
# Check for openssl's libcrypto (used only for benchmarking)
799
800
801
802
803
804
805
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],
806
	    [Define if you have openssl's libcrypto (used for benchmarking)]) dnl'
807
808
809
810

if test x$enable_openssl = xyes ; then
  AC_DEFINE(WITH_OPENSSL)
fi
811
812

AC_SUBST(OPENSSL_LIBFLAGS)
813

814
AH_BOTTOM(
815
816
817
818
819
820
[#if defined(__x86_64__) || defined(__arch64__)
# define HAVE_NATIVE_64_BIT 1
#else
/* Needs include of <limits.h> before use. */
# define HAVE_NATIVE_64_BIT (SIZEOF_LONG * CHAR_BIT >= 64)
#endif
821
822
])

823
824
825
826
827
828
829
# clock_gettime is in librt on *-*-osf5.1 and on glibc, so add -lrt to
# BENCH_LIBS if needed. On linux (tested on x86_32, 2.6.26),
# clock_getres reports ns accuracy, while in a quick test on osf
# clock_getres said only 1 millisecond.

old_LIBS="$LIBS"
AC_SEARCH_LIBS(clock_gettime, rt, [
830
  AC_DEFINE([HAVE_CLOCK_GETTIME],1,[Define if clock_gettime is available])])
831
832
833
834
835
BENCH_LIBS="$LIBS"
LIBS="$old_LIBS"

AC_SUBST(BENCH_LIBS)

Niels Möller's avatar
Niels Möller committed
836
837
# Set these flags *last*, or else the test programs won't compile
if test x$GCC = xyes ; then
838
  # Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
839
  if $CC --version | grep '^2\.96$' 1>/dev/null 2>&1; then
840
841
842
843
    true
  else
    CFLAGS="$CFLAGS -ggdb3"
  fi
844
  # FIXME: It would be better to actually test if this option works and/or is needed.
Niels Möller's avatar
Niels Möller committed
845
  # Or perhaps use -funsigned-char.
846
  if $CC --version | grep 'gcc.* 4\.' 1>/dev/null 2>&1; then
847
848
    CFLAGS="$CFLAGS -Wno-pointer-sign"
  fi
849
850
851
  CFLAGS="$CFLAGS -Wall -W \
  -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
  -Wpointer-arith -Wbad-function-cast -Wnested-externs"
Niels Möller's avatar
Niels Möller committed
852
853
854

# Don't enable -Wcast-align as it results in tons of warnings in the
# DES code. And when using stdio.
855
856
# Don't enable -Waggregate-return, as that causes warnings for glibc
# inttypes.h.
Niels Möller's avatar
Niels Möller committed
857
fi
Niels Möller's avatar
Niels Möller committed
858

859
AC_CONFIG_FILES([config.make config.m4 Makefile bignum.h])
860
AC_CONFIG_FILES([tools/Makefile testsuite/Makefile examples/Makefile])
861
AC_CONFIG_FILES([nettle.pc hogweed.pc])
862
863

AC_OUTPUT
864

865
866
867
868
869
870
871
872
873
AC_MSG_NOTICE([summary of build options:

  Version:           ${PACKAGE_STRING}
  Host type:         ${host}
  ABI:               ${ABI}
  Assembly files:    ${asm_path:-none}
  Install prefix:    ${prefix}
  Library directory: ${libdir}
  Compiler:          ${CC}
874
  Static libraries:  ${enable_static}
875
876
  Shared libraries:  ${enable_shared}
  Public key crypto: ${enable_public_key}
877
  Using mini-gmp:    ${enable_mini_gmp}
Sam Thursfield's avatar
Sam Thursfield committed
878
  Documentation:     ${enable_documentation}
879
])