[cmake-developers] Fwd: [Bug 1203786] [NEW] Invalid handling of linker flags during build

[Bill Hoffman]

-------- Original Message --------
Subject: [Bug 1203786] [NEW] Invalid handling of linker flags during build
Date: Mon, 22 Jul 2013 15:31:47 -0000
From: Rodney Dawes <1203786 at bugs.launchpad.net>
Reply-To: Bug 1203786 <1203786 at bugs.launchpad.net>
To: cmake at packages.qa.debian.org

Public bug reported:

When building a project using cmake, which contains a shared library,
and any code which uses that shared library, such as test programs,
installed application, or plug-ins for other applications or libraries,
cmake incorrectly applies all of the linker flags from the shared
library, to all of the resulting objects which depend on it. This makes
using certain linker features, such as version scripts, very
problematic.

This problem is then compounded when building with a builddir != srcdir
setup, as the possible workaround of using a relative file name for
--version-script and including an additional version script which
exports all the symbols, cannot be used.

The linker flags for a shared library should never be copied over to the
other targets which depend upon that library.

** Affects: cmake (Ubuntu)
      Importance: Undecided
          Status: New

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https://bugs.launchpad.net/bugs/1203786

Title:
   Invalid handling of linker flags during build

Status in “cmake” package in Ubuntu:
   New

Bug description:
   When building a project using cmake, which contains a shared library,
   and any code which uses that shared library, such as test programs,
   installed application, or plug-ins for other applications or
   libraries, cmake incorrectly applies all of the linker flags from the
   shared library, to all of the resulting objects which depend on it.
   This makes using certain linker features, such as version scripts,
   very problematic.

   This problem is then compounded when building with a builddir !=
   srcdir setup, as the possible workaround of using a relative file name
   for --version-script and including an additional version script which
   exports all the symbols, cannot be used.

   The linker flags for a shared library should never be copied over to
   the other targets which depend upon that library.

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