Re: set PROJECT_NUMBER to the value of a #define from a header file

Hi, Stefan

I faced this problem years ago and the solution I came up was to add a
target in my Makefiles where I also set variables with the the project
version.

MAJOR_VERSION = 1
MINOR_VERSION = 10
BUILD_VERSION = 155
VERSION_NUMBER = $(MAJOR_VERSION).$(MINOR_VERSION).$(BUILD_VERSION)

Then I added a target with the following command line:

docs : $(HTML_DIR)
( cat doxyfile; echo "PROJECT_NUMBER=$(VERSION_NUMBER)" ) | doxygen -

That command generates the documentation with the version number defined in
the Makefile that is also used in the the header variables inside the
project.



2017-08-18 11:51 GMT-03:00 Stefan Ludewig <[email protected]>:

> Hi.
>
> I would like to centralize the versioning of a project to avoid having to
> count up the project version number at multiple places all the time.
>
> I have version.h file, which looks like this:
> #define STRINGIFY2(param) #param
> #define STRINGIFY(param) EG_PHOTON_STRINGIFY2(param)
>
> #define VERSION_MAJOR 4
> #define VERSION_SERVER_MINOR 1
> #define VERSION_CLIENT_MINOR 8
> #define VERSION_PATCH_RELEASE 2
> #define VERSION STRINGIFY(VERSION_MAJOR) "."
> STRINGIFY(VERSION_SERVER_MINOR) "." STRINGIFY(VERSION_CLIENT_MINOR) "."
> STRINGIFY(VERSION_PATCH_RELEASE)
>
>
>
> - the resource-files include this header, so that the Visual Studio
> resource compiler can use it for the version number that is shown in the
> details page of a generated dll
> - the build-scripts parse that file, so that they can include that number
> as part of the name of the generated package
> - the code itself also includes this header so that it can send the
> version to the server when connecting
>
> Now I wonder about the bst way to also have doxygen use this version
> number when generating the documentation.
> As a fallback option I could just have the buildscript parse in doxygens
> configuration file and replace the value to which PROJECT_NUMBER is set
> with the value from that header that the build script already has
> available anyway, before running doxygen.
> However that would mean that only after running a script first, doxygen
> would know the correct version number to use.
> I would prefer if doxygen would also know the correct version number
> without the need to run an external tool first.
> Is there any way  how to tell doxygen in its config file to read out the
> version number from a #define in a header file?
> I know that it's possible to set PROJECT_NUMBER to an environment variable
> instead of a hard coded value, but that doesn't help as we still would
> have to update the env var every time when version.h gets updated, which
> is errorprone.
> So is there any way to have doxygen use the value of a #define for the
> version number in the generated docs without using any external tools?
>
> Kind regards,
> Stefan.
>
> --
>
> --
> Exit Games Inc.
>
> We Make Multiplayer Simple
> www.photonengine.com
>
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