[Qt-interest] Auto-Incremented Build Number for my Project

[David Walthall]

Josiah Bryan wrote:
> Hey All -
> 
> Here's the goal: An auto-incremented build number that I can access from
> my program (via a define or symbol - dont matter), that increments each
> time I call make (on linux) or build it with QtCreator on windows.
> 
> On linux - thats easy - just hack Makefile with some custom build target
> definitions and run a small perl or bash script each build to increment
> a 'special' file or whatever. But since the Makefile is auto-gen'd by
> qmake, I imagine I'd have to do something fancy in my .pro file to
> re-add my Makfile-changes every time qmake regens the project file. On
> windows, I'm a bit murky - not sure how I'd get it done there.
> 
> What I'm wondering is if there is any "Standard" way using .pro files to
> tell qmake to autoinc a build number for me without me having to do any
> special "hacks". Anyone have any leads or pointers on it? Or am I on my
> own for this one?


Below is what I did for this.  It has the advantage that the version
number is up-to-date whenever you build.


### Add to bottom of .pro

# Add the revision number stuff.
# This has to come after the    include(xxxx.pri)   so that
# $$SOURCES $$HEADERS $$FORMS are all set
REVISION_INPUT = Revision_template.cpp
revtarget.input = REVISION_INPUT
revtarget.output = Revision.h
win32 {
    revtarget.commands = C:\cygwin\bin\sh make_revision.sh
${QMAKE_FILE_NAME} ${QMAKE_FILE_OUT}
}
macx {
    revtarget.commands = /usr/bin/sh make_revision.sh ${QMAKE_FILE_NAME}
${QMAKE_FILE_OUT}
}
revtarget.depends = ${QMAKE_FILE_NAME} $$SOURCES $$HEADERS $$FORMS
revtarget.name = Generating_RevNum (${QMAKE_FILE_NAME})
QMAKE_EXTRA_UNIX_COMPILERS += revtarget

### End of section for .pro file


---------------------------------
Here is make_revision.sh
---------------------------------
#! /bin/sh -x
/usr/bin/sed 's/SVNVERSION/'`svnversion -n ..`'/' "$1" > "$2"


---------------------------------
Revision_template.cpp:
---------------------------------
#include <QString>
QString GetSvnRevisionNumber()
{
    return QString::fromLatin1("SVNVERSION").trimmed();
}



PS The ".." in `svnversion -n ..` is because the working copy root is on
directory above where this is invoked.  Adjust yours accordingly.