Mani captured that snapshot back when CMake version 2.8 was newer than what
was running on our build systems. Now we have to assume that the bundled
GetPrerequisites.cmake is better than our old snapshot. Use the bunded one.
The viewer's 00-COMPILE-LINK-RUN.txt recommends passing -gdwarf-2 to the Mac
compiler, and so we've been doing ever since before the viewer-build-variables
repo was engaged. Now we discover that when CMake sees -gdwarf-2, it removes
the -g switch entirely. It also removes it when you pass plain -g. Only when
you pass -gdwarf-with-dsym or just -gdwarf does CMake pass plain -g to the
compiler. Change -gdwarf-2, if specified, to -gdwarf so we at least get -g.
LLInstanceTracker<T> performs validation in ~LLInstanceTracker(). Normally
validation failure logs an error and terminates the program, which is fine. In
the test executable, though, we want validation failure to throw an exception
instead so we can catch it and continue testing other failure conditions. But
since destructors in C++11 are implicitly noexcept(true), that exception never
made it out of ~LLInstanceTracker(): it crashed the test program instead.
Declaring ~LLInstanceTracker() noexcept(false) solves that, allowing the test
program to catch the exception and continue.
However, if we unconditionally declare that, then every destructor anywhere in
the inheritance hierarchy for any LLInstanceTracker subclass must also be
noexcept(false)! That's way too pervasive, especially for functionality we
only need (or want) in a specific test executable.
Instead, make the CMake macros LL_ADD_PROJECT_UNIT_TESTS() and
LL_ADD_INTEGRATION_TEST() -- with which we define all viewer build-time tests
-- define two new command-line macros: LL_TEST=testname and LL_TEST_testname.
That way, preprocessor logic in a header file can detect whether it's being
compiled for production code or for a test executable.
(While at it, encapsulate in a new GET_OPT_SOURCE_FILE_PROPERTY() CMake macro
an ugly repetitive pattern. The builtin GET_SOURCE_FILE_PROPERTY() sets the
target variable to "NOTFOUND" -- rather than an empty string -- if the
specified property wasn't set. Every call to GET_SOURCE_FILE_PROPERTY() in
LL_ADD_PROJECT_UNIT_TESTS() was followed by a test for NOTFOUND and an
assignment to "". Wrap all that in a macro whose 'unset' value is "".)
Now llinstancetracker.h can detect when we're building the LLInstanceTracker
unit test executable, and *only then* declare ~LLInstanceTracker() as
noexcept(false). We #define LLINSTANCETRACKER_DTOR_NOEXCEPT to expand either
empty or noexcept(false), also detecting clang in C++11 mode. (It all works
fine without noexcept(false) until we turn on C++11 mode.)
We also use that macro for the StatBase class in lltrace.h. Turns out some of
the infrastructure headers required for tests in general, including the
LLInstanceTracker test, use LLInstanceTracker. Fortunately that appears to be
the only other class we must annotate this way for the LLInstanceTracker tests.
Whatever we were trying to do with LLSharedLibs.cmake hasn't worked on the Mac
for a long time, and trying to fix it only digs up more problems. Skip it:
we've already worked around it.
Update the media_plugins_example CMakeLists.txt to eliminate some CMake
non-existent dependency warnings.
This is known not to work yet: the relevant Havok libraries are not being
bundled with llphysicsextensions, therefore the viewer can't link with any
Havok symbols.
Aside from crazy indentation, much of Havok.cmake is redundant testing of
DEBUG_PREBUILT and conditional MESSAGE(STATUS ...) output, not to mention
repeating stanzas for each of debug_dir, release_dir and relwithdebinfo_dir.
Use local functions and foreach() to try to manage redundancy so the details
of what it's actually trying to do don't get lost in the noise.
The CMake directive that passes VIEWER_CHANNEL to the C++ compiler as
LL_VIEWER_CHANNEL was enclosing the VIEWER_CHANNEL value in double quotes. At
this point in history, those double quotes literally become part of the
LL_VIEWER_CHANNEL value, causing the viewer to construct a bad Viewer Version
Manager query containing those double quotes. Removing them fixes the query.
When LL_BUILD is not in the environment at autobuild configure time, important
macros such as LL_WINDOWS aren't set. That means that platform-dependent
macros such as LL_TYPEOF() aren't defined, which can produce obscure errors
like this:
indra\llcommon\llunittype.h(51): error C2226: syntax error :
unexpected type 'S' (packages\llphysicsextensions\stub\LLPhysicsExtensionsStubImpl.cpp)
10> indra\llcommon\llunittype.h(52) :
see reference to class template instantiation 'LLResultTypeAdd<S,T>' being compiled
Make the CMake logic fail with a more readily-understood error in that case.
Going forward, the intention is to set in 00-Common.cmake only switches not
already set for ALL viewer-related libraries in
https://bitbucket.org/lindenlab/viewer-build-variables/src/tip/variables.
To that end, remove all switches redundant with settings from that file.
Remove redundancies within 00-Common.cmake.
Remove cruft testing for gcc versions older than 4.3.
In a clang 64-bit compile, with that switch set in CMAKE_CXX_LINK_FLAGS, we
cannot catch any user exception. This shows up right away because TUT relies
on internal exceptions to walk through test<n>() test methods, but of course
being unable to catch any exceptions in the viewer would be just as bad.
A quick Google search turned up lots of people mentioning -no_compact_unwind
without finding any documentation about what it's supposed to be good for. But
since no tests work with it, whereas they work without it -- kill it.
Oz Linden