File: configure.in

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proftpd-dfsg 1.3.4a-5%2Bdeb7u3
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AC_INIT(./mod_sftp.c)

AC_CANONICAL_SYSTEM

ostype=`echo $build_os | sed 's/\..*$//g' | sed 's/-.*//g' | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ`

AC_PROG_CC
AC_PROG_CPP
AC_AIX
AC_ISC_POSIX
AC_MINIX

AC_HEADER_STDC
AC_CHECK_HEADERS(stdlib.h unistd.h limits.h fcntl.h)

dnl Need to support/handle the --with-includes and --with-libraries options
AC_ARG_WITH(includes,
  [AC_HELP_STRING(
    [--with-includes=LIST],
    [add additional include paths to proftpd. LIST is a colon-separated list of include paths to add e.g. --with-includes=/some/mysql/include:/my/include])
  ],
  [ ac_addl_includes=`echo "$withval" | sed -e 's/:/ /g'` ;
    for ainclude in $ac_addl_includes; do
      if test x"$ac_build_addl_includes" = x ; then
        ac_build_addl_includes="-I$ainclude"
      else
        ac_build_addl_includes="-I$ainclude $ac_build_addl_includes"
      fi
    done
    CPPFLAGS="$CPPFLAGS $ac_build_addl_includes"
  ])

AC_ARG_WITH(libraries,
  [AC_HELP_STRING(
    [--with-libraries=LIST],
    [add additional library paths to proftpd. LIST is a colon-separated list of include paths to add e.g. --with-libraries=/some/mysql/libdir:/my/libs])
  ],
  [ ac_addl_libdirs=`echo "$withval" | sed -e 's/:/ /g'` ;
    for alibdir in $ac_addl_libdirs; do
      if test x"$ac_build_addl_libdirs" = x ; then
        ac_build_addl_libdirs="-L$alibdir"
      else
        ac_build_addl_libdirs="-L$alibdir $ac_build_addl_libdirs"
      fi
    done
    LDFLAGS="$LDFLAGS $ac_build_addl_libdirs"
  ])


dnl Check for a crippled OpenSSL library (e.g. Solaris 10).  More details
dnl can be found in:
dnl
dnl   http://fixunix.com/ssh/73273-openssh-solaris-10-amd64.html
dnl   http://marc.info/?l=openssh-unix-dev&m=113245772008292&w=2
dnl   http://opensolaris.org/os/project/crypto/Documentation/sunwcry/
dnl
dnl So for those users stuck using the Solaris 10 whose OpenSSL does
dnl not provide support for AES ciphers longer than 128 bits, we need to
dnl check and disable those symbols.  Otherwise mod_sftp fails to build due
dnl to linker errors.
saved_libs="$LIBS"
LIBS="$LIBS -lcrypto"
AC_MSG_CHECKING([whether OpenSSL has crippled AES support])
AC_TRY_LINK(
  [ #ifdef HAVE_STRING_H
    # include <string.h>
    #endif
    #include <openssl/evp.h>
  ],
  [
    EVP_CIPHER *c;
    c = EVP_aes_192_cbc();
    c = EVP_aes_256_cbc();
  ],
  [
    AC_MSG_RESULT(no)
  ],
  [
    AC_MSG_RESULT(yes)
    AC_DEFINE(HAVE_AES_CRIPPLED_OPENSSL, 1, [OpenSSL is missing AES192 and AES256 support])
  ]
)

AC_MSG_CHECKING([whether OpenSSL supports SHA256])
AC_TRY_LINK(
  [
    #include <openssl/evp.h>
  ],
  [
    EVP_MD *md;
    md = EVP_sha256();
  ],
  [
    AC_MSG_RESULT(yes)
    AC_DEFINE(HAVE_SHA256_OPENSSL, 1, [OpenSSL supports SHA224/SHA256])
  ],
  [
    AC_MSG_RESULT(no)
  ]
)

AC_MSG_CHECKING([whether OpenSSL supports SHA512])
AC_TRY_LINK(
  [
    #include <openssl/evp.h>
  ],
  [
    EVP_MD *md;
    md = EVP_sha512();
  ],
  [
    AC_MSG_RESULT(yes)
    AC_DEFINE(HAVE_SHA512_OPENSSL, 1, [OpenSSL supports SHA384/SHA512])
  ],
  [
    AC_MSG_RESULT(no)
  ]
)

LIBS="$saved_libs"

INCLUDES="$ac_build_addl_includes"
LIBDIRS="$ac_build_addl_libdirs"

AC_SUBST(INCLUDES)
AC_SUBST(LIBDIRS)

AC_CONFIG_HEADER(mod_sftp.h)
AC_OUTPUT(Makefile)