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# dnscrypt.m4
# dnsc_DNSCRYPT([action-if-true], [action-if-false])
# --------------------------------------------------------------------------
# Check for required dnscrypt libraries and add dnscrypt configure args.
AC_DEFUN([dnsc_DNSCRYPT],
[
AC_ARG_ENABLE([dnscrypt],
AS_HELP_STRING([--enable-dnscrypt],
[Enable dnscrypt support (requires libsodium)]),
[opt_dnscrypt=$enableval], [opt_dnscrypt=no])
if test "x$opt_dnscrypt" != "xno"; then
AC_ARG_WITH([libsodium], AC_HELP_STRING([--with-libsodium=path],
[Path where libsodium is installed, for dnscrypt]), [
CFLAGS="$CFLAGS -I$withval/include"
LDFLAGS="$LDFLAGS -L$withval/lib"
])
AC_SEARCH_LIBS([sodium_init], [sodium], [],
AC_MSG_ERROR([The sodium library was not found. Please install sodium!]))
$1
else
$2
fi
])
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