Provided by: asn1c_0.9.28+dfsg-3_amd64 bug


       asn1c -- the ASN.1 Compiler


       asn1c [-E [-F] | -P | -R]
       [-Sdir] [-X]
       [-Wdebug-...] [-foption] [-gen-option] [-pdu={all|auto|Type}]


       asn1c compiles ASN.1 specifications into a set of target language (C/C++) encoders and
       decoders for BER, DER, PER, XER and other encoding rules.


   Stage Selection Options
       -E     Run the parsing stage only.  Print the reconstructed ASN.1 text.

       -F     Used together with -E, instructs the compiler to stop after the ASN.1 syntax tree
              fixing stage and dump the reconstructed ASN.1 specification to the standard output.

       -P     Dump the compiled output to the standard output instead of creating the target
              language files on disk.

       -R     Restrict the compiler to generate only the ASN.1 tables, omitting the usual support

       -S directory
              Use the specified directory with ASN.1 skeleton files.

       -X     Generate an XML DTD schema for the specified ASN.1 files.

   Warning Options
              Treat warnings as errors; abort if any warning is produced.

              Enable lexer debugging during the ASN.1 parsing stage.

              Enable ASN.1 syntax tree fixer debugging during the fixing stage.

              Enable debugging during the actual compile time.

   Language Options
              Allow SIZE() constraint for INTEGER, ENUMERATED, and other types for which this
              constraint is normally prohibited by the standard.  This is a violation of ASN.1
              standard, and the compiler may fail to produce a meaningful code.

              Using this option prevents name collisions in the target source code by using
              complex names for target language structures.  (Name collisions may occur if the
              ASN.1 module reuses the same identifiers in multiple contexts).

              When generating code for a CHOICE type, compile the CHOICE members as indirect
              pointers instead of declaring them inline.  Consider using this option together
              with -fno-include-deps to prevent circular references.

              Refer to header files in #includes using "double" instead of <angle> quotes.

              Pretend the specified type is known.  The compiler will assume the target language
              source files for the given type have been provided manually.

              Include ASN.1 module's line numbers in generated code comments.

              Do not generate ASN.1 subtype constraint checking code.  This may make a shorter

              Do not generate courtesy #include lines for non-critical type dependencies.  Helps
              prevent namespace collisions.

              Enable unnamed unions in the definitions of target language's structures.

              Use the unbounded size data types (INTEGER_t, ENUMERATED_t, REAL_t) by default,
              instead of using the native machine's data types (long, double).

   Codecs Generation Options
              Generate the Packed Encoding Rules (PER) support code.

              Create a PDU table for specified types, or discover Protocol Data Units
              automatically.  In case of -pdu=all, all ASN.1 types defined in all modules will
              form a PDU table.  In case of -pdu=auto, all types not referenced by any other type
              will form a PDU table.  If Type is an ASN.1 type identifier, the identifier is
              added to the generated PDU table.  The last form may be specified multiple times to
              add any number of PDUs.

   Output Options
              When -EF options are also specified, this option forces the compiler to explain its
              internal understanding of subtype constraints.

              Generate "-- #line" comments in -E output.


       unber(1), enber(1).


       Lev Walkin <>.