#11 Allow compiling converter-sample.c without default PDU

[Steve Peltz]

If compiled with -DASN_PDU_COLLECTION and not defining a default PDU with -DPDU=xxx, this will require you to enter a -p option to select a PDU from a list.

If you only select -h, all options will be shown, and neither PER nor BER will be shown as the default.

If you select a PDU and also -h afterwards on the command line, it sets the default input option appropriately.

This allows compiling a generic converter-sample.c that can be linked against a library of compiled definitions that contains a pdu_collection file without having to define a default PDU.

This makes generating, e.g. rrc-dump, even easier;

Create a directory asn1lib; inside, do:

gcc -c -DASN_PDU_COLLECTION -I/usr/local/share/asn1c /usr/local/share/asn1c/*.c
ar -r asn1lib.a *.o

In another directory, compile the rrc source:

asn1c -fcompound-names -gen-PER -pdu=auto -R ../rrc.asn
gcc -c -I/usr/local/share/asn1c *.c
ar -r rcclib.a *.o

Now you can link them together with:

gcc -o rrc-dump asn1lib.a rrclib.a

(assuming you've moved both of the files into the same directory)

Building asn1lib.a and rrclib.a that way makes it a lot easier to use inside another project, and this makes it even easier to build a test reader/writer program.

[Steve Peltz]

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Oops, just noticed I didn't parenthesize correctly, updated patch corrects that.
File Added: converter.patch

[Steve Peltz]

diff -u for skeletons/converter-sample.c