configure.in

   1 AC_INIT(starttls.el)
   2 AC_PREREQ(2.50)
   3 AM_INIT_AUTOMAKE(starttls, 0.10)
   4
   5 AM_PATH_LISPDIR
   6
   7 AC_PROG_CC
   8 AC_ISC_POSIX
   9 AC_PROG_INSTALL
  10 AC_PROG_MAKE_SET
  11 AC_PROG_RANLIB
  12
  13 AC_CHECK_HEADERS(libgen.h sys/select.h sys/poll.h)
  14
  15 AC_STRUCT_ADDRINFO(ac_cv_struct_addrinfo)
  16 if test "$ac_cv_struct_addrinfo" = "no"; then
  17         AC_CHECK_LIB(nsl, gethostbyname)
  18 fi
  19 AC_CHECK_LIB(socket, socket)
  20
  21 AC_CHECK_FUNC(getopt_long,,[
  22         AC_LIBOBJ(getopt)
  23         AC_LIBOBJ(getopt1)])
  24 AC_REPLACE_FUNCS(basename)
  25 AC_CHECK_FUNC(poll)
  26
  27 AC_ARG_WITH(openssl, AC_HELP_STRING([--with-openssl=PATH], [use OpenSSL from PATH]))
  28 AC_ARG_WITH(gnutls, AC_HELP_STRING([--with-gnutls], [use GnuTLS instead of OpenSSL]),
  29         use_gnutls=true, use_gnutls=false)
  30 AM_CONDITIONAL(USE_GNUTLS, test x$use_gnutls = xtrue)
  31
  32 if $use_gnutls; then
  33         AC_CHECK_HEADER(gnutls/gnutls.h, [
  34                 AC_DEFINE(USE_GNUTLS)
  35                 AC_CHECK_LIB(gnutls, gnutls_global_init, LIBS="-lgnutls $LIBS")],
  36                 [GnuTLS is selected, but it is not installed])
  37 else
  38         if test -n "$with_openssl"; then
  39                 CPPFLAGS="$CPPFLAGS -I${with_openssl}/include"
  40                 LDFLAGS="$LDFLAGS -L${with_openssl}/lib"
  41         fi
  42         AC_CHECK_HEADER(openssl/ssl.h, [
  43                 AC_CHECK_LIB(crypto, BIO_accept, LIBS="-lcrypto $LIBS")
  44                 AC_CHECK_LIB(ssl, SSL_CTX_new, LIBS="-lssl $LIBS")],
  45                 AC_MSG_ERROR([OpenSSL not installed - please install first]))
  46 fi
  47
  48 AC_OUTPUT(Makefile)