configure.ac 11.1 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], [1.16], [nettle-bugs@lists.lysator.liu.se])
6
AC_PREREQ(2.50)
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

Niels Möller's avatar
Niels Möller committed
13
SHLIBMAJOR=2
14
SHLIBMINOR=6
15

16 17
AC_CANONICAL_HOST

18 19 20 21 22 23
# 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$with_include_path != x ; then
24
  CPPFLAGS="$CPPFLAGS -I`echo $with_include_path | sed 's/:/ -I/g'`"
25 26 27 28 29 30 31
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$with_lib_path != x ; then
32
  LDFLAGS="$LDFLAGS -L`echo $with_lib_path | sed 's/:/ -L/g'`"
33 34
fi

35 36 37 38
AC_ARG_ENABLE(public-key,
  AC_HELP_STRING([--disable-public-key], [Disable public key algorithms]),,
  [enable_public_key=yes])

39
AC_ARG_ENABLE(assembler,
40 41
  AC_HELP_STRING([--disable-assembler],[Disable assembler code]),,
  [enable_assembler=yes])
42

43
AC_ARG_ENABLE(shared,
44
  AC_HELP_STRING([--enable-shared], [Build a shared library]),,
45 46
  [enable_shared=no])

47 48 49 50 51
AC_ARG_ENABLE(pic,
  AC_HELP_STRING([--disable-pic],
  [Do not try to compile library files as position independent code]),,
  [enable_pic=yes])

52 53 54 55
AC_ARG_ENABLE(openssl,
  AC_HELP_STRING([--disable-openssl], [Do not include openssl glue in the benchmark program]),,
  [enable_openssl=yes])
  
56 57 58 59 60
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])

61
# Checks for programs.
Niels Möller's avatar
Niels Möller committed
62
AC_PROG_CC
63 64 65 66 67 68 69 70

# 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
71
if test "x$CC" = xrntcl ; then
72
    AC_MSG_NOTICE([Compiling with rntcl; clearing EXEEXT and disabling assembler])
73 74
    ac_exeext=''
    ac_cv_exeext=''
Niels Möller's avatar
Niels Möller committed
75
    EXEEXT=''
76
    enable_assembler=no
77 78
fi

79 80 81 82 83 84 85 86
# 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
87
AC_PROG_MAKE_SET
Niels Möller's avatar
Niels Möller committed
88
AC_PROG_RANLIB
89
AC_CHECK_TOOL(NM, nm, strings)
90 91
# Used only for the GNU-stack configure test.
AC_CHECK_TOOL(OBJDUMP, objdump, false)
Niels Möller's avatar
Niels Möller committed
92

93
if test "x$ac_cv_prog_cc_stdc" = xno ; then
Niels Möller's avatar
Niels Möller committed
94 95
  AC_ERROR([the C compiler doesn't handle ANSI-C])
fi
96

97 98
AC_PROG_INSTALL

99 100 101 102
# According to the autoconf manual, needs install-sh from
# autoconf-2.60 or automake-1.10 to avoid races.
AC_PROG_MKDIR_P

103 104
LSH_DEPENDENCY_TRACKING

105
if test x$enable_dependency_tracking = xyes ; then
106 107 108
  # 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.
109

110 111
  AC_CONFIG_COMMANDS([dummy-dep-files],
  [(cd "$srcdir" && find . -name '*.c' -print) \
112
 | sed 's/\.c$//' | (while read f; do echo > "$f.o.d"; echo > "$f.po.d"; done)
113
])
114
fi
115

116
# Select assembler code
117
asm_path=
118 119
case "$host_cpu" in
  [i?86* | k[5-8]* | pentium* | athlon])
120
    asm_path=x86
121
    ;;
122
  *sparc*)
123 124 125 126 127 128 129 130 131
    AC_TRY_COMPILE([
#if defined(__sparcv9) || defined(__arch64__)
#error 64-bit sparc
#endif
    ], [], [
      asm_path=sparc
    ], [
      asm_path=sparc64
    ])
132
    ;;
133 134 135
  *)
    enable_assembler=no
    ;;
136 137
esac

138
# echo "enable_assembler: $enable_assembler, asm_path: $asm_path"
139

140
if test "x$enable_assembler" = xyes ; then
141
  if test -n "$asm_path"; then
Niels Möller's avatar
Niels Möller committed
142
    AC_MSG_NOTICE([Looking for assembler files in $asm_path/.])
143
    found=no
144
    for tmp_f in aes-encrypt-internal.asm aes-decrypt-internal.asm \
145
		 arcfour-crypt.asm md5-compress.asm sha1-compress.asm machine.m4; do
146 147
#       echo "Looking for $srcdir/$asm_path/$tmp_f"
      if test -f "$srcdir/$asm_path/$tmp_f"; then
148
#        echo found
149
        found=yes
150
        AC_CONFIG_LINKS($tmp_f:$asm_path/$tmp_f)
151 152 153 154 155 156 157 158 159
      fi
    done
    if test "$found" = no; then
      enable_assembler=no
      AC_MSG_WARN([No assembler files found.])
    fi
  fi
fi

160 161 162
LSH_CCPIC

SHLIBCFLAGS="$CCPIC"
163

164 165
case "$host_os" in
  cygwin*)
166 167 168
    SHLIBFORLINK='cygnettle-$(SHLIBMAJOR)-$(SHLIBMINOR).dll'
    SHLIBSONAME=''
    SHLIBFILE='libnettle.dll.a'
169 170
    SHLIBLINK='$(CC) $(LDFLAGS) -shared -Wl,--out-implib=$(SHLIBFILE) -Wl,--export-all-symbols -Wl,--enable-auto-import -Wl,--whole-archive'
    SHLIBLIBS='-Wl,--no-whole-archive $(LIBS)'
171
    ;;
Grant Robinson's avatar
Grant Robinson committed
172 173 174 175 176 177 178
  darwin*)
    SHLIBFORLINK=libnettle.dylib
    SHLIBSONAME='$(SHLIBFORLINK).$(SHLIBMAJOR)'
    SHLIBFILE='$(SHLIBSONAME).$(SHLIBMINOR)'
    SHLIBLINK='$(CC) -dynamiclib $(LDFLAGS)'
    # SHLIBLIBS=' -lgmp'
    ;;
179 180 181 182 183
  *)
    SHLIBFORLINK=libnettle.so
    SHLIBSONAME='$(SHLIBFORLINK).$(SHLIBMAJOR)'
    SHLIBFILE='$(SHLIBSONAME).$(SHLIBMINOR)'
    SHLIBLINK='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(SHLIBSONAME)'
Niels Möller's avatar
Niels Möller committed
184 185
    # FIXME: It might make some sense to link with -lgmp
    SHLIBLIBS=''
186 187
    ;;
esac
188 189 190 191

if test "x$enable_shared" = xyes ; then
  SHLIBTARGET='$(SHLIBFORLINK)'
  SHLIBINSTALL=install-shared
192 193 194
else
  SHLIBTARGET=''
  SHLIBINSTALL=''
195 196
fi

197 198 199 200
if test "x$enable_pic" = xyes; then
  CCPIC_MAYBE="$CCPIC"
else
  CCPIC_MAYBE=''
201
fi
202
AC_SUBST([CCPIC_MAYBE])
203

204
ASM_SYMBOL_PREFIX=''
205
ASM_ELF_STYLE='no'
206
ASM_TYPE_FUNCTION=''
207
ASM_MARK_NOEXEC_STACK=''
208
ASM_ALIGN_LOG=''
209 210 211 212 213 214 215 216

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;],
217
      [ $NM conftest.$OBJEXT >conftest.out
218 219 220 221 222 223 224 225
        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!?])])])
226
  if test x$nettle_cv_asm_underscore = xyes ; then
227
    ASM_SYMBOL_PREFIX='_'
228
  fi
229 230 231 232 233 234 235 236 237 238 239 240

  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
241
      $OBJDUMP -x conftest.o | grep '\.note\.GNU-stack' > /dev/null \
242 243 244 245 246 247 248 249 250 251 252
      && nettle_cv_asm_gnu_stack=yes
    else
      cat conftest.out >&AC_FD_CC
      echo "configure: failed program was:" >&AC_FD_CC
      cat conftest.s >&AC_FD_CC
    fi
    rm -f conftest.*])
  if test x$nettle_cv_asm_gnu_stack = xyes ; then
    ASM_MARK_NOEXEC_STACK='.section .note.GNU-stack,"",@progbits'
  fi

253 254 255
  AC_CACHE_CHECK([for ELF-style .type,%function pseudo-ops],
    [nettle_cv_asm_type_percent_function],
    [GMP_TRY_ASSEMBLE([
256 257
.text
.globl foo
258
.type foo,%function
259 260 261 262
foo:
.Lend:

.size foo, .Lend - foo
263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282
],
       [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$nettle_cv_asm_type_percent_function = xyes ; then
283
    ASM_ELF_STYLE='yes'
284 285 286 287 288 289
    ASM_TYPE_FUNCTION='%function'
  else
    if test x$nettle_cv_asm_type_hash_function = xyes ; then
      ASM_ELF_STYLE='yes'
      ASM_TYPE_FUNCTION='#function'
    fi
290
  fi
291 292 293 294 295 296 297 298 299 300
  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
301 302 303
fi

AC_SUBST(ASM_SYMBOL_PREFIX)
304
AC_SUBST(ASM_ELF_STYLE)
305
AC_SUBST(ASM_TYPE_FUNCTION)
306
AC_SUBST(ASM_MARK_NOEXEC_STACK)
307
AC_SUBST(ASM_ALIGN_LOG)
308

309
AC_SUBST(SHLIBCFLAGS)
310 311
AC_SUBST(SHLIBMAJOR)
AC_SUBST(SHLIBMINOR)
312 313 314 315
AC_SUBST(SHLIBFORLINK)
AC_SUBST(SHLIBSONAME)
AC_SUBST(SHLIBFILE)
AC_SUBST(SHLIBLINK)
316 317
AC_SUBST(SHLIBTARGET)
AC_SUBST(SHLIBINSTALL)
Niels Möller's avatar
Niels Möller committed
318 319
AC_SUBST(SHLIBLIBS)

Niels Möller's avatar
Niels Möller committed
320
AC_PATH_PROG(M4, m4, m4)
321

322
# Checks for typedefs, structures, and compiler characteristics.
Niels Möller's avatar
Niels Möller committed
323
AC_C_CONST
Niels Möller's avatar
Niels Möller committed
324 325 326 327 328
AC_C_INLINE
AC_TYPE_UID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME

Niels Möller's avatar
Niels Möller committed
329
AC_CHECK_HEADERS([openssl/blowfish.h openssl/des.h openssl/cast.h openssl/aes.h],,
330 331 332
[enable_openssl=no
 break])

Niels Möller's avatar
Niels Möller committed
333
LSH_FUNC_ALLOCA
Niels Möller's avatar
Niels Möller committed
334

Niels Möller's avatar
Niels Möller committed
335
# Needed by the supplied memcmp.c
Niels Möller's avatar
Niels Möller committed
336
AC_C_BIGENDIAN
Niels Möller's avatar
Niels Möller committed
337 338
AC_REPLACE_FUNCS(memxor)

Niels Möller's avatar
Niels Möller committed
339
LSH_GCC_ATTRIBUTES
Niels Möller's avatar
Niels Möller committed
340

341 342
# According to Simon Josefsson, looking for uint32_t and friends in
# sys/types.h is needed on some systems, in particular cygwin.
343
AX_CREATE_STDINT_H([nettle-stdint.h], [sys/types.h])
344

345 346 347 348
# 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.
349 350 351 352 353
Support for public key algorithms will be unavailable.])]
    enable_public_key=no)

if test "x$enable_public_key" = xyes ; then
  AC_DEFINE(WITH_PUBLIC_KEY)
354
  RSA_EXAMPLES='rsa-keygen$(EXEEXT) rsa-sign$(EXEEXT) rsa-verify$(EXEEXT) rsa-encrypt$(EXEEXT) rsa-decrypt$(EXEEXT)'
355
  RSA_TOOLS='pkcs1-conv$(EXEEXT)'
356
else
357 358
  RSA_EXAMPLES=''
  RSA_TOOLS=''
359 360 361
fi

AH_TEMPLATE([WITH_PUBLIC_KEY], [Define to enable public key features])
362
AC_SUBST(RSA_EXAMPLES)
363
AC_SUBST(RSA_TOOLS)
364

365 366
# Add -R flags needed to run programs linked with gmp
LSH_RPATH_FIX
367

368 369
OPENSSL_LIBFLAGS=''

370
# Check for openssl's libcrypto (used only for benchmarking)
371 372 373 374 375 376 377 378 379 380 381 382
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
383 384

AC_SUBST(OPENSSL_LIBFLAGS)
385

Niels Möller's avatar
Niels Möller committed
386 387
# Set these flags *last*, or else the test programs won't compile
if test x$GCC = xyes ; then
388 389 390 391 392 393
  # Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
  if "$CC" --version | grep '^2\.96$' 1>/dev/null 2>&1; then
    true
  else
    CFLAGS="$CFLAGS -ggdb3"
  fi
394
  # FIXME: It would be better to actually test if this option works and/or is needed.
Niels Möller's avatar
Niels Möller committed
395
  # Or perhaps use -funsigned-char.
396 397 398
  if "$CC" --version | grep 'gcc.* 4\.' 1>/dev/null 2>&1; then
    CFLAGS="$CFLAGS -Wno-pointer-sign"
  fi
399 400 401
  CFLAGS="$CFLAGS -Wall -W \
  -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
  -Wpointer-arith -Wbad-function-cast -Wnested-externs"
Niels Möller's avatar
Niels Möller committed
402 403 404

# Don't enable -Wcast-align as it results in tons of warnings in the
# DES code. And when using stdio.
405 406
# Don't enable -Waggregate-return, as that causes warnings for glibc
# inttypes.h.
Niels Möller's avatar
Niels Möller committed
407
fi
Niels Möller's avatar
Niels Möller committed
408

409 410 411 412
AC_CONFIG_FILES([config.make config.m4 Makefile])
AC_CONFIG_FILES([tools/Makefile testsuite/Makefile examples/Makefile])

AC_OUTPUT
413