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# $Id: configure.in,v 1.19 2007/03/20 16:35:41 grubba Exp $ 
AC_INIT(nettle.cmod) 
AC_CONFIG_HEADER(nettle_config.h) 
 
AC_SET_MAKE 
 
AC_MODULE_INIT() 
 
if test "$with_nettle" = "no"; then 
  PIKE_FEATURE_WITHOUT(nettle) 
else 
  AC_CHECK_LIB(gmp, mpz_init) 
  AC_CHECK_LIB(gmp, __mpz_init) 
  AC_CHECK_LIB(gmp, __gmpz_init) 
  AC_MSG_CHECKING(CryptAcquireContext in -ladvapi32) 
  AC_CACHE_VAL(pike_cv_nettle_advapi32_CryptAcquireContext, 
  [ 
    OLDLIBS="$LIBS" 
    LIBS="-ladvapi32 $LIBS" 
    AC_TRY_LINK([#ifndef _WIN32_WINNT 
#define _WIN32_WINNT 0x0400 
#endif 
#include <windows.h> 
#include <wincrypt.h> 
    ],[CryptAcquireContext(0,0,0,0,0);], 
      [pike_cv_nettle_advapi32_CryptAcquireContext=yes], 
      [pike_cv_nettle_advapi32_CryptAcquireContext=no]) 
    LIBS="$OLDLIBS" 
  ]) 
  AC_MSG_RESULT($pike_cv_nettle_advapi32_CryptAcquireContext) 
  if test x"$pike_cv_nettle_advapi32_CryptAcquireContext" = xyes; then 
    LIBS="-ladvapi32 $LIBS" 
  fi 
  AC_CHECK_LIB(nettle, nettle_md5_init) 
  AC_CHECK_LIB(nettle, md5_init) 
 
  AC_SUBST(IDEA_OBJ) 
 
  if test "x$ac_cv_lib_nettle_nettle_md5_init" = "xyes" -o \ 
          "x$ac_cv_lib_nettle_md5_init" = "xyes"; then 
    PIKE_FEATURE_OK(Nettle) 
 
    # md4 is available in later versions of nettle 
    AC_CHECK_HEADERS(nettle/md4.h) 
    AC_CHECK_FUNCS(nettle_md4_init) 
 
    AC_MSG_CHECKING([for idea.c]) 
    # Have the patent-encumbered idea files been purged? 
    if test -f "$srcdir/idea.c" ; then 
      AC_MSG_RESULT([found]) 
      AC_DEFINE([WITH_IDEA], 1, [idea.c available]) 
      IDEA_OBJ=idea.o 
    else 
      AC_MSG_RESULT([no]) 
      IDEA_OBJ="" 
    fi 
  else 
    if test "$ac_cv_lib_gmp_mpz_init:$ac_cv_lib_gmp___mpz_init:$ac_cv_lib_gmp___gmpz_init" = "no:no:no"; then 
      # No gmp found; enable it if possible. 
      PIKE_ENABLE_BUNDLE(gmp, [ 
        ac_cv_lib_gmp_mpz_init 
        ac_cv_lib_gmp___mpz_init 
        ac_cv_lib_gmp___gmpz_init 
      ]) 
    fi 
    PIKE_ENABLE_BUNDLE(nettle, [ 
      ac_cv_lib_nettle_nettle_md5_init 
      ac_cv_lib_nettle_md5_init 
    ], [Cannot compile --with-nettle without the Nettle library. 
It is highly recommended that you install a working Nettle library on 
your system as that will add features to Pike required by many 
applications. These features include ciphers, hash algorithms and 
random generators. If you know that you do not need cryptographic 
functions, you can re-run configure with the option --without-nettle 
instead. Nettle is available at http://www.lysator.liu.se/~nisse/nettle/. 
    ]) 
    PIKE_FEATURE_NODEP(Nettle) 
  fi 
fi 
 
AC_OUTPUT(Makefile,echo FOO >stamp-h )