facilities.

This was only used in one place in LLVM, and was used pervasively (but
with different code!) in Clang. It has no advantages over the standard
CMake facilities and in some cases disadvantages.

llvm-svn: 158889

While making lld build under the tools directory I decided to refactor how this
works.

There is now a macro, add_llvm_external_project, which takes the name of the
expected subdirectory. This sets up two CMake options.

 * LLVM_EXTERNAL_${NAME}_SOURCE_DIR
     This is the path to the source. It defaults to
     ${CMAKE_CURRENT_SOURCE_DIR}/${name}.
 * LLVM_EXTERNAL_${NAME}_BUILD
     Enable and disable building the tool as part of LLVM.

I chose LLVM_EXTERNAL_${NAME} as a prefix so they all show up together in the
GUI.

llvm-svn: 155654

llvm-svn: 145420

 - I verified locally that the current dependency lists are identical.
 - This makes add_llvm_library_dependencies() a no-op. I'll remove it once this
   change passes the bots.

llvm-svn: 145355

sub-library for the targets depended on the core target CodeGen library.
This completely undermined the careful work to separate the those
libraries, especially the MC-layer ones. This surfaced as circular
dependencies when the libraries were built as shared libraries where
CMake doesn't allow cycles.

This should fix PR10537. I'll watch the bots to see if there is fallout
on other platforms.

llvm-svn: 136565

globally scoped constructs. Also, round-trip these dependencies through
the LLVMConfig.cmake.in file thata is used by CMake-based clients of
"installed" (or built) LLVM trees.

llvm-svn: 136543

specified in the same file that the library itself is created. This is
more idiomatic for CMake builds, and also allows us to correctly specify
dependencies that are missed due to bugs in the GenLibDeps perl script,
or change from compiler to compiler. On Linux, this returns CMake to
a place where it can relably rebuild several targets of LLVM.

I have tried not to change the dependencies from the ones in the current
auto-generated file. The only places I've really diverged are in places
where I was seeing link failures, and added a dependency. The goal of
this patch is not to start changing the dependencies, merely to move
them into the correct location, and an explicit form that we can control
and change when necessary.

This also removes a serialization point in the build because we don't
have to scan all the libraries before we begin building various tools.
We no longer have a step of the build that regenerates a file inside the
source tree. A few other associated cleanups fall out of this.

This isn't really finished yet though. After talking to dgregor he urged
switching to a single CMake macro to construct libraries with both
sources and dependencies in the arguments. Migrating from the two macros
to that style will be a follow-up patch.

Also, llvm-config is still generated with GenLibDeps.pl, which means it
still has slightly buggy dependencies. The internal CMake
'llvm-config-like' macro uses the correct explicitly specified
dependencies however. A future patch will switch llvm-config generation
(when using CMake) to be based on these deps as well.

This may well break Windows. I'm getting a machine set up now to dig
into any failures there. If anyone can chime in with problems they see
or ideas of how to solve them for Windows, much appreciated.

llvm-svn: 136433

The first problem to fix is to stop creating synthetic *Table_gen
targets next to all of the LLVM libraries. These had no real effect as
CMake specifies that add_custom_command(OUTPUT ...) directives (what the
'tablegen(...)' stuff expands to) are implicitly added as dependencies
to all the rules in that CMakeLists.txt.

These synthetic rules started to cause problems as we started more and
more heavily using tablegen files from *subdirectories* of the one where
they were generated. Within those directories, the set of tablegen
outputs was still available and so these synthetic rules added them as
dependencies of those subdirectories. However, they were no longer
properly associated with the custom command to generate them. Most of
the time this "just worked" because something would get to the parent
directory first, and run tablegen there. Once run, the files existed and
the build proceeded happily. However, as more and more subdirectories
have started using this, the probability of this failing to happen has
increased. Recently with the MC refactorings, it became quite common for
me when touching a large enough number of targets.

To add insult to injury, several of the backends *tried* to fix this by
adding explicit dependencies back to the parent directory's tablegen
rules, but those dependencies didn't work as expected -- they weren't
forming a linear chain, they were adding another thread in the race.

This patch removes these synthetic rules completely, and adds a much
simpler function to declare explicitly that a collection of tablegen'ed
files are referenced by other libraries. From that, we can add explicit
dependencies from the smaller libraries (such as every architectures
Desc library) on this and correctly form a linear sequence. All of the
backends are updated to use it, sometimes replacing the existing attempt
at adding a dependency, sometimes adding a previously missing dependency
edge.

Please let me know if this causes any problems, but it fixes a rather
persistent and problematic source of build flakiness on our end.

llvm-svn: 136023

header search path.

llvm-svn: 135952

tablegenning to all libraries and executables.

llvm-svn: 135908

under cmake).

Add libprofile_rt.a so that we can tell clang to link against it in --coverage
mode. Also turn it on by default in cmake builds.

Oscar, this touches a change you made for EXCLUDE_FROM_ALL support -- I think
I've done the right thing, but please let me know (or fix and commit) if not!

llvm-svn: 130470

llvm-svn: 130199

scheme is used by the functionality related to find_package.

llvm-svn: 128889

unnecesary conditionals and introduced a new convenience function.

The problem was that the list of libraries for Clang's unit tests was
<clang libraries> <system libraries> <llvm libraries>. As the llvm
libraries references symbols defined on the system libraries, those
were reported as undefined.

llvm-svn: 128484

Tested that MinGW/MSYS builds fine without that.

llvm-svn: 128033

link command.

Fixed a pair of IF expressions too.

llvm-svn: 127546

llvm-svn: 126224

Requires CMake 2.8.3 or newer.

llvm-svn: 126092

of testing for its presence at cmake time.

This way the build automatically regenerates the makefiles when a svn
update brings in a new sublibrary.

llvm-svn: 126068

llvm-svn: 125968

Patch by Wesley Peck!

llvm-svn: 122395

cmake/modules/AddLLVM.cmake: Add empty "phony" target in add_llvm_loadable_module() even if loadable module were not supported.

llvm-svn: 121455

llvm-svn: 117130

PR 8375

llvm-svn: 116479

available targets unless LLVM_INCLUDE_X is ON. LLVM_BUILD_X implies
LLVM_INCLUDE_X"

It breaks the configuration phase when cmake is invoked without
parameters, it is too complex for the purpose and introduces an
incovenience for the user (as both LLVM_BUILD_X and LLVM_INCLUDE_X
must set to OFF for not including X on the build)

llvm-svn: 114795

unless LLVM_INCLUDE_X is ON. LLVM_BUILD_X implies LLVM_INCLUDE_X

llvm-svn: 114747

This reverts commit r113632

Conflicts:

	cmake/modules/AddLLVM.cmake

llvm-svn: 113819

llvm-svn: 113676

llvm-svn: 113632

llvm-svn: 89636

LLVM_BUILD_TOOLS or LLVM_BUILD_EXAMPLES are OFF.

llvm-svn: 89635

llvm-svn: 86684

llvm-svn: 86656

llvm-svn: 79186

failure with VS 9.0, nmake and cmake 2.6.4. The buildbot output does
not show the patch level of cmake, it just says 2.6.

Sadly, parallel builds are broken due to recent changes on LLVM Target
libraries and its auxiliaries (TargetInfo, AsmPrinter, AsmParser). I
have a patch for stablishing the correct dependencies, but cmake is
buggy and generates makefiles that can't handle them.

llvm-svn: 79180

parallel builds.

llvm-svn: 79177

llvm-svn: 79144

way we ensure that tablegenned files exist before they are #include'd
by the LLVM Target sublibraries. Required for parallel builds.

llvm-svn: 78996

llvm-svn: 78990

libraries for an executable.

Now LLVMConfig uses a new system for sorting library dependencies, as
the list of dependent libraries for each entry of FinalLibDeps.txt no
longer is topologically sorted.

llvm-svn: 78787