Hi everybody,
We have a very big project using rules written with Imake and we want to switch
to Cmake.
Everything is more or less ok, except few things related to code generated.
We have some .idl files (Corba syntax) used to generate custom C++ wrappers in
order to be able to have POD for shared memory, to serialize in/out, etc.
The problem with this is that every .idl file outputs a variable number of
files.
xxx.idl:
---
#ifndef xxx_
#define xxx_
#include <xxx2.idl>
module xxx
{
struct Data
{
long r_long;
};
};
---
gen_code xxx.idl -> xxxIdl.h, xxxIdl.cc, xWrappers.h and xxxWData.h
So for every "keyword struct" there is one more file generated. The first three
files are always the same.
Given this, I can't know the list of output files to put it in the list of
add_custom_command output section.
I could add the first know thre files, but it's not always enough, because if
there other *.cc from my project that includes one generated *.h cmake will not
know how to make it (and there are).
I need somehow to be able to tell to add_custom_command that the content of
OUTPUT files should be somehow taken from the result of running the COMMAND
(which I know it's impossible).
Another issue is the dependencies of these .idl files.
They have a very similar syntax with C++, and they have at top something like
"#include <xxx2.idl>" so in theory, touching one included *.idl should trigger
the add_custom_command, but it doesn't.
I've tried the option IMPLICIT_DEPENDS with CXX as language but I don't get
anything; even if this would work it's not ok, because this mean I would have
to add manually all the tree of the included files, and this is not what I want.
I've searched the web, we have the 5th version of the book, we really don't
know what to do about this.
Do you think there is any work around this problem ?
Thank you,
Daniel
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