qmake set GCC string variable

[deleted605]

Hi guys,

I'm trying to assign a string value to a variable at compile time. Trying and googling about 2 days but no lack.

Here's how I'm trying to do that.
Below are in .pro file.

CHANGESET_FILE_PATH = $$absolute_path("changeset.txt", $$PWD/..)
CHANGESET = $$cat($$CHANGESET_FILE_PATH)
QMAKE_CXXFLAGS += -DCHANGESET="$$CHANGESET"
message("Changeset: "$$CHANGESET)

This is qmake output;
Project MESSAGE: Changeset: "045c99e9e492"

And I'm trying to access CHANGESET in main.cpp like that;
qWarning() << "CHANGESET:" << CHANGESET;

Here is compiler error;
<command-line>:-1: error: unable to find numeric literal operator 'operator"" c99e9e492'

Any comment?

[SGaist]

Hi,

You should rather use the DEFINES variable. It also requires a bit more escaping.

CHANGESETSTR = '\\"$ ${CHANGESET}\\"'
DEFINES += CHANGESET=\"$ ${CHANGESETSTR}\"

Remove the space between the dollars, it's only so that the forum doesn't hide them

[deleted605]

Thank you very much.

I did not tried your solution but find another one.

This is how I declared variable at compile time;
QMAKE_CXXFLAGS += -DCHANGESET="$$CHANGESET"

And this is how I stringified variable in main.cpp;
#define STRINGIZE(x) #x
#define STRINGIZE_VALUE_OF(x) STRINGIZE(x)
int main(int argc, char *argv[])
{
qWarning() << "CHANGESET:" << STRINGIZE_VALUE_OF(CHANGESET);
}

I'll try your solution asap and let you know the result.
Thanks again.