Provided by: asn1c_0.9.24+dfsg-1_amd64 
NAME
asn1c - ASN.1 Compiler
SYNOPSIS
asn1c [-E [-F] | -P | -R]
[-Sdir] [-X]
[-Wdebug-...] [-foption] [-gen-option] [-pdu={all|auto|Type}]
[-print-option]
infile...
DESCRIPTION
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.
OPTIONS
Overall Options
-E -F -P -R -S directory -X
Warning Options
-Werror -Wdebug-lexer -Wdebug-fixer -Wdebug-compiler
Language Options
-fbless-SIZE -fcompound-names -findirect-choice -fknown-extern-type=<name> -fnative-types -fno-
constraints -fno-include-deps -funnamed-unions -fskeletons-copy
Codecs Generation Options
-gen-PER -pdu={all|auto|Type}
Output Options
-print-constraints -print-lines
OVERALL OPTIONS
-E Stop after the parsing stage and print the reconstructed ASN.1 specification code to the standard
output.
-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 code.
-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
-Werror
Treat warnings as errors; abort if any warning is produced.
-Wdebug-lexer
Enable lexer debugging during the ASN.1 parsing stage.
-Wdebug-fixer
Enable ASN.1 syntax tree fixer debugging during the fixing stage.
-Wdebug-compiler
Enable debugging during the actual compile time.
LANGUAGE OPTIONS
-fbless-SIZE
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.
-fcompound-names
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).
-findirect-choice
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.
-fknown-extern-type=<name>
Pretend the specified type is known. The compiler will assume the target language source files for
the given type have been provided manually.
-fnative-types
Use the native machine's data types (int, double) whenever possible, instead of the compound
INTEGER_t, ENUMERATED_t and REAL_t types.
-fno-constraints
Do not generate ASN.1 subtype constraint checking code. This may make a shorter executable.
-fno-include-deps
Do not generate courtesy #include lines for non-critical type dependencies. Helps prevent
namespace collisions.
-funnamed-unions
Enable unnamed unions in the definitions of target language's structures.
-fskeletons-copy
Copy support files (skeletons) rather than symlink them.
CODECS GENERATION OPTIONS
-gen-PER
Generate Packed Encoding Rules (PER) support code.
-pdu={all|auto|Type}
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, it is added to a PDU table. The last form may be specified multiple times to add any
number of PDUs.
OUTPUT OPTIONS
-print-constraints
When -EF are also specified, this option forces the compiler to explain its internal understanding
of subtype constraints.
-print-lines
Generate "-- #line" comments in -E output.
SEE ALSO
unber(1), enber(1)
AUTHORS
Lev Walkin <vlm@lionet.info>