[CMake] Cpack generated RPM and changed binary file size in 2.8.10

[Eric Noulard]

2013/4/17 jupiter <jupiter.hce at gmail.com>:
> Hi,
>
> I have a wired situation, I have a binary file (ELF 64-bit LSB
> executable, x86-64, version 1 (SYSV), dynamically linked (uses shared
> libs), for GNU/Linux 2.6.18, stripped) in bin directory, I then I run
> "cpack -G RPM" to generate an RPM package. After install the RPM
> package in another machine, the size of the binary file (82576 KB) is
> different from original binary file (106228 KB).

Could you check the size of the executable which gets into the RPM
it should be located in:

<builddir>/_CPack_Packages/<packageName>/RPM/<packageFileName>/....

When CPackRPM runs you get a message like:

CPackRPM: Will use GENERATED spec file:
/blah/blah/.../RPM/SPECS/yourpackage.spec


then the directory to look into should be:
/blah/blah/.../RPM/<packageFileName>/

You can also extract the content of the generated RPM using rpm2cpio (or alien)

rpm2cpio <yourpackage>.rpm | cpio -idmv

alien -t <yourpackage>.rpm
tar zxvf <yourpackage>.tgz

then verify the size  of the concerned file.

> Some functions in
> that packaged binary file did not run correctly. Could anyone help to
> explain me why the size of binary file changes?

I bet you compare with a file produced by "make install/strip"?

a) The executable your are looking at may not be the same as the one
    put into the RPM.

b) rpmbuild (which get called by CPackRPM) can post-process the
library/executable
  depending on the distribution you are running on.

So first do the comparison with the package executable.
Then more questions:

1) On which kind of hosts do you create the RPM?
    (Fedora Y,  OpenSuSE W, Debian Z, etc...)
    What is the version of RPM on this one:
   rpm --version

2) On which king of target do you intsall it?
    What is the version of RPM on the target:
    rpm --version

In each case could check the dependency found in the RPM:
rpm -qp --requires yourPackage.rpm


> And how to fix it?

Depending on the discrepancy between the host and the target this may
not be fixable.
>
> Thank you.
>
> Kind regards.
>
> j
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Erk
Le gouvernement représentatif n'est pas la démocratie --
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