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AC_DEFUN([AM_WITH_OPENSSL],
[AC_ARG_WITH(openssl,
AC_HELP_STRING([--with-openssl@<:@=ARG@:>@],
[enable SSL support, will check ARG/ssl <default-system-dirs>
/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr]),
[
HAVE_SSL=no
save_LIBS="$LIBS"
save_CPPFLAGS="$CPPFLAGS"
save_LDFLAGS="$LDFLAGS"
dnl Libcrypto depends on the dynamic linking API: make sure we have
dnl -ldl in LIBS when required. Most systems provide dlopen (),
dnl but HP-UX uses shl_load().
LIBS=""
AC_SEARCH_LIBS(dlopen, dl, [], [AC_SEARCH_LIBS(shl_load, dl)])
SSL_LIBDL="$LIBS"
LIBS="$save_LIBS"
dnl Libcrypto also depends on -lsocket -lnsl on Solaris: get them into
dnl $LIBS if required (but that's just for the purpose of the test,
dnl in real applications this will come from g-soliop.ads).
AC_SEARCH_LIBS([gethostbyname], [nsl])
AC_SEARCH_LIBS([socket], [socket])
dnl Libcrypto depends on -lgdi and -lws2_32 on Windows.
case "$host_os" in
cygwin* | mingw*)
SSL_WINLIBS="-lgdi32 -lws2_32"
LIBS="$LIBS $SSL_WINLIBS"
;;
*)
SSL_WINLIBS=""
;;
esac
dnl If ARG is not specified, $withval is "yes", and we do not have any
dnl additional user defined path to search. Special case if the user
dnl specified --without-openssl: in this case $withval is "no" and we'll
dnl exit early from the loop below.
if test "$withval" != "yes"; then
ssl_user_dir="$withval"
fi
# dir="-" corresponds to the default system locations
for dir in $ssl_user_dir - /usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr; do
# Handle case of --without-openssl
if test "$dir" = "no"; then
break
fi
# Set candidate options for this location
if test "$dir" != "-"; then
SSL_INC="$dir/include"
CPPFLAGS="$save_CPPFLAGS -I$SSL_INC"
SSL_INC="${SSL_INC}/"
LDFLAGS="$save_LDFLAGS -L$dir/lib"
SSL_LDFLAGS="$LDFLAGS "
else
SSL_INC=""
LDFLAGS="$save_LDFLAGS"
SSL_LDFLAGS=""
fi
SSL_LDFLAGS="${SSL_LDFLAGS}-lssl -lcrypto ${SSL_LIBDL} ${SSL_WINLIBS}"
# Note that order is important here (-lssl must come before
# -lcrypto), since some undefined symbols in libssl are provided
# by libcrypto.
# Check whether we see appropriate headers and libraries
ssl_fail="no"
AC_CHECK_HEADERS([${SSL_INC}openssl/opensslv.h ${SSL_INC}openssl/ssl.h],
[], [ssl_fail="yes"])
if test "$ssl_fail" = "no"; then
# If headers found, check for valid libcrypto and libssl.
# unset ac_cv_XXX to prevent reuse of cached results from a previous
# iteration.
unset ac_cv_lib_crypto_SSLeay_version
AC_CHECK_LIB(crypto, SSLeay_version, [], [ssl_fail="yes"],
[$SSL_LIBDL])
unset ac_cv_lib_ssl_SSL_CTX_new
AC_CHECK_LIB(ssl, SSL_CTX_new, [], [ssl_fail="yes"],
[$SSL_LIBDL])
fi
# Check for openssl(1)
AC_PATH_PROG([OPENSSL], [openssl], [false], [$dir/bin:$PATH])
if test "$OPENSSL" = "false"; then
ssl_fail="yes"
fi
if test "$ssl_fail" = "no"; then
if test "$dir" = "-"; then
ssldir="default system directory"
else
ssldir="$dir"
fi
AC_MSG_NOTICE([OpenSSL found in $ssldir])
CPPFLAGS="$CPPFLAGS -DHAVE_SSL"
# Special case for RedHat Linux 9
if test -f /usr/kerberos/include/krb5.h; then
CPPFLAGS="-I/usr/kerberos/include/ ${CPPFLAGS}"
fi
HAVE_SSL=yes
break;
else
CPPFLAGS="$save_CPPFLAGS"
unset SSL_LDFLAGS
fi
done
LIBS="$save_LIBS"
LDFLAGS="$save_LDFLAGS"
AC_MSG_CHECKING(if OpenSSL is available)
AC_MSG_RESULT($HAVE_SSL)
if test x$HAVE_SSL != xyes; then
NO_SSL="-- "
fi
],
[
NO_SSL="-- "
])
# Convert the space-separated SSL_LDFLAGS into a sequence of string literals
# concatenated with ASCII.NUL separators, which is what prama Linker_Options
# expects.
set_linker_options() {
while test @S|@# -gt 0; do
SSL_LINKER_OPTIONS="${SSL_LINKER_OPTIONS}\"@S|@1\""
if test @S|@# -gt 1; then
SSL_LINKER_OPTIONS="${SSL_LINKER_OPTIONS} & ASCII.NUL & "
fi
shift
done
if test -z "${SSL_LINKER_OPTIONS}"; then
NO_SSL_LINKER_OPTIONS="-- "
fi
}
set_linker_options $SSL_LDFLAGS
AC_SUBST(SSL_LINKER_OPTIONS)
AC_SUBST(NO_SSL_LINKER_OPTIONS)
AC_SUBST(HAVE_SSL)
AC_SUBST(NO_SSL)
AC_SUBST(OPENSSL)
])dnl
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