Commit Graph

421 Commits

Author SHA1 Message Date
Chris Bieneman 9d9da0d64e Revert "Raising minimum required CMake version to 2.8.12.2."
This reverts commit add62ac537d8249fa2161405066e318ca80e199d.

llvm-svn: 228616
2015-02-09 22:07:49 +00:00
Chris Bieneman 1fadecadf9 Raising minimum required CMake version to 2.8.12.2.
llvm-svn: 228615
2015-02-09 22:05:07 +00:00
Hans Wennborg 9148e1721c Fix ProgramFiles path for 64-bit Windows installer
If we are building an 64bit installer on Windows we have to adjust the
Program Files path otherwise it uses the wrong Program Files (x86)
directory. Related CMake bug report
http://public.kitware.com/Bug/view.php?id=14211

Patch by Ismail Dönmez!

llvm-svn: 227999
2015-02-03 18:31:29 +00:00
Hans Wennborg d94a5f09dd Trunk is now 3.7.0svn
llvm-svn: 226004
2015-01-14 17:38:03 +00:00
Chandler Carruth d86ab891c7 [py3] Teach the CMake build to reject Python versions older than 2.7.
Continue to require Python 2 however as recent experiments suggest
LLDB's build requires it.

llvm-svn: 224948
2014-12-29 19:36:05 +00:00
Chandler Carruth a78e24e548 [cmake] Start making LLVM_LIBDIR_SUFFIX effective by adding it to
*numerous* places where it was missing in the CMake build. The primary
change here is that the suffix is now actually used for all of the lib
directories in the LLVM project's CMake. The various subprojects still
need similar treatment.

This is the first of a series of commits to try to make LLVM's cmake
effective in a multilib Linux installation. I don't think many people
are seriously using this variable so I'm hoping the fallout will be
minimal. A somewhat unfortunate consequence of the nature of these
commits is that until I land all of them, they will in part make the
brokenness of our multilib support more apparant. At the end, things
should actually work.

llvm-svn: 224919
2014-12-29 11:16:19 +00:00
Chris Bieneman 5d388e111a Adding a new option to CMake to disable C++ atexit on llvm-shlib.
Summary:
This is desirable for WebKit and other clients of the llvm-shlib because C++ exit time destructors have a tendency to crash when invoked from multi-threaded applications.

Ideally this option will be temporary, because the ideal fix is to just not have exit time destructors.

Reviewers: chapuni, ributzka

Reviewed By: ributzka

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6572

llvm-svn: 223805
2014-12-09 18:49:55 +00:00
Peter Zotov b20073c63c [OCaml] [cmake] Add CMake buildsystem for OCaml.
Closes PR15325.

llvm-svn: 223071
2014-12-01 19:50:23 +00:00
Evgeniy Stepanov f1c381738b Use ninja pools to limit the number of concurrent compile/link jobs.
This change makes use of the new "job pool" capability in cmake 3.0
with ninja generator to allow limiting the number of concurrent jobs
of a certain type.

llvm-svn: 222341
2014-11-19 10:30:02 +00:00
Peter Collingbourne a7fb5cf1e2 CMake: Use the new USES_TERMINAL option for test suite targets when available.
llvm-svn: 222181
2014-11-17 22:16:15 +00:00
Rafael Espindola f9dcf9029b Pass PRIVATE to target_link_libraries if using shared libraries.
A shared library (unlike a .a), has its dependencies recorded in the library and
we can pass PRIVATE to target_link_libraries.

This patch then removes some bogus dependencies when using
BUILD_SHARED_LIBS=ON. For example, we go from

build lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/AggressiveAntiDepBreaker.cpp.o:
CXX_COMPILER /home/espindola/llvm/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp
|| include/llvm/IR/intrinsics_gen lib/libLLVMSupport.so
lib/libLLVMCore.so lib/libLLVMBitReader.so
lib/libLLVMTransformUtils.so lib/libLLVMInstCombine.so
lib/libLLVMScalarOpts.so lib/libLLVMipa.so lib/libLLVMAnalysis.so
lib/libLLVMMCParser.so lib/libLLVMMC.so lib/libLLVMObject.so
lib/libLLVMTarget.so lib/libLLVMProfileData.so

to

build lib/CodeGen/CMakeFiles/LLVMCodeGen.dir/AggressiveAntiDepBreaker.cpp.o:
CXX_COMPILER /home/espindola/llvm/llvm/lib/CodeGen/AggressiveAntiDepBreaker.cpp
|| include/llvm/IR/intrinsics_gen lib/libLLVMSupport.so
lib/libLLVMCore.so lib/libLLVMTransformUtils.so
lib/libLLVMScalarOpts.so lib/libLLVMAnalysis.so lib/libLLVMMC.so
lib/libLLVMTarget.so

In fact, build.ninja goes from 5231028 bytes to 4896759 bytes.

With this, old verisons of bfd ld (2.24 is OK, 2.23 warns) will print a bogus
warning when building with BUILD_SHARED_LIBS.

llvm-svn: 221530
2014-11-07 15:33:56 +00:00
Chris Bieneman adffd01498 Adding llvm-shlib to CMake build system with a few new bells and whistles
Summary:
This patch adds a new CMake build setting LLVM_BUILD_LLVM_DYLIB, which defaults to OFF. When set to ON, this will generate a shared library containing most of LLVM. The contents of the shared library can be overriden by specifying LLVM_DYLIB_COMPONENTS. LLVM_DYLIB_COMPONENTS can be set to a semi-colon delimited list of any LLVM components that you llvm-config can resolve.

On Windows, unless you are using Cygwin, you must specify an explicit symbol export file using LLVM_EXPORTED_SYMBOL_FILE. On Cygwin and all unix-like platforms if you do not specify LLVM_EXPORTED_SYMBOL_FILE, an export file containing only the LLVM C API will be auto-generated from the list of LLVM components specified in LLVM_DYLIB_COMPONENTS.

Reviewers: rnk

Reviewed By: rnk

Subscribers: rnk, llvm-commits

Differential Revision: http://reviews.llvm.org/D5890

llvm-svn: 220490
2014-10-23 17:22:14 +00:00
Richard Smith 2b91a7f80f Add LLVM_ENABLE_MODULES flag to CMake to enable building with C++ modules.
llvm-svn: 218551
2014-09-26 22:40:15 +00:00
Chris Bieneman 5007741d68 Enabling LLVM & Clang to be cross-compiled using CMake from a single configuration command line
The basic idea is similar to the existing cross compilation support. A directory must be configured to build host versions of tablegen tools and llvm-config. This directory can be user provided (and configured), or it can be created during the build. During a build the native build directory will be configured and built to supply the tablegen tools used during the build. A user could also explicitly provide the tablegen executables to run on the CMake command line.

llvm-svn: 217105
2014-09-03 23:21:18 +00:00
Viktor Kutuzov 5e0db8b247 Fix building with in-tree libc++abi on FreeBSD
Differential Revision: http://reviews.llvm.org/D4743

llvm-svn: 214541
2014-08-01 19:23:15 +00:00
Hans Wennborg 831f05802e Update LLVM version: 3.5 => 3.6
We branched 3.5, it's now time to work on 3.6.

This is Sylvestre's patch from [1] plus regenerated configure
file by me, and minus the release notes reset, which Sean
pointed out [2] should happen later.

 1. http://reviews.llvm.org/D4660
 2. http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20140721/111137.html

llvm-svn: 214131
2014-07-28 22:10:52 +00:00
NAKAMURA Takumi 6c5fbbca7c [CMake] Introduce LLVM_SHLIB_OUTPUT_INTDIR.
For now, its user is configure_lit_site_cfg().

llvm-svn: 212314
2014-07-04 04:23:26 +00:00
Rafael Espindola c5f1a6c66f Delete utils/FileUpdate.
It is unused and it looks like it was never used.

llvm-svn: 211508
2014-06-23 17:58:39 +00:00
Matt Arsenault d31b63e6ae Delete trailing whitespace.
Hopefully this forces cmake to re-run.

llvm-svn: 210830
2014-06-12 21:27:03 +00:00
Alp Toker 65faa29670 CMake: don't install the internal config.h header
Background:
  http://lists.cs.uiuc.edu/pipermail/llvmdev/2014-June/073707.html

llvm-svn: 210766
2014-06-12 11:25:18 +00:00
Alp Toker 6ae079ee4a Make LINK_POLLY_INTO_TOOLS work with the CMake build
The option check was being performed after config.h/llvm-config.h substitution,
generating incorrect macro definitions.

Fixes PR19614.

llvm-svn: 210311
2014-06-06 06:39:00 +00:00
Tim Northover 3b0846e8f7 AArch64/ARM64: move ARM64 into AArch64's place
This commit starts with a "git mv ARM64 AArch64" and continues out
from there, renaming the C++ classes, intrinsics, and other
target-local objects for consistency.

"ARM64" test directories are also moved, and tests that began their
life in ARM64 use an arm64 triple, those from AArch64 use an aarch64
triple. Both should be equivalent though.

This finishes the AArch64 merge, and everyone should feel free to
continue committing as normal now.

llvm-svn: 209577
2014-05-24 12:50:23 +00:00
Tim Northover cc08e1fe1b AArch64/ARM64: remove AArch64 from tree prior to renaming ARM64.
I'm doing this in two phases for a better "git blame" record. This
commit removes the previous AArch64 backend and redirects all
functionality to ARM64. It also deduplicates test-lines and removes
orphaned AArch64 tests.

The next step will be "git mv ARM64 AArch64" and rewire most of the
tests.

Hopefully LLVM is still functional, though it would be even better if
no-one ever had to care because the rename happens straight
afterwards.

llvm-svn: 209576
2014-05-24 12:42:26 +00:00
Alexey Samsonov e825c854a8 [CMake] Add build rules for llvm-PerfectShuffle utility
llvm-svn: 208225
2014-05-07 16:54:00 +00:00
Reid Kleckner 9f5eb637cb Added Sphinx documentation generation to CMake build system.
The option LLVM_ENABLE_SPHINX option enables the "docs-llvm-html",
"docs-llvm-man" targets but does not build them by default. The
following CMake options have been added that control what targets are
made available

SPHINX_OUTPUT_HTML
SPHINX_OUTPUT_MAN

If LLVM_BUILD_DOCS is enabled then the enabled docs-llvm-* targets will
be built by default and if ``make install`` is run then docs-llvm-html
and docs-llvm-man will be installed (tested on Linux only).

The add_sphinx_target function is in its own file so it can be included
by other projects that use Sphinx for their documentation.

Patch by Daniel Liew <daniel.liew@imperial.ac.uk>!

llvm-svn: 206655
2014-04-18 21:45:25 +00:00
NAKAMURA Takumi 692d198ede [CMake] Reformat, if(MSVC)...else()...endif()
llvm-svn: 206215
2014-04-14 21:58:19 +00:00
Pete Cooper 4da0a0c87b Add ability to disable building LLVM utils
Patch by Chris Bieneman

llvm-svn: 205478
2014-04-02 22:49:58 +00:00
Tim Northover 00ed9964c6 ARM64: initial backend import
This adds a second implementation of the AArch64 architecture to LLVM,
accessible in parallel via the "arm64" triple. The plan over the
coming weeks & months is to merge the two into a single backend,
during which time thorough code review should naturally occur.

Everything will be easier with the target in-tree though, hence this
commit.

llvm-svn: 205090
2014-03-29 10:18:08 +00:00
Hans Wennborg a3c3b8104d Win installer: provide a pretty icon
llvm-svn: 204960
2014-03-27 20:48:37 +00:00
Sebastian Pop a59005be81 static link polly into tools
llvm-svn: 203886
2014-03-14 04:04:14 +00:00
Sebastian Pop f7d02d479c move WITH_POLLY option before add_subdirectory(tools)
the first run of the polly buildbot failed, and then it started passing.
This is due to the fact that the buildbot re-builds in an existing directory,
and the first run does not have WITH_POLLY set when it enters tools/.
Thus, cmake ignores the tools/polly dir in the first run, and then because
it reuses the CMakeCache.txt of the previous run, it has the WITH_POLLY set
by the previous run, and so it passes the second time.

llvm-svn: 203615
2014-03-11 22:42:07 +00:00
Sebastian Pop e3cd1429e5 fix PR13550: add a cmake WITH_POLLY option
llvm-svn: 203486
2014-03-10 20:47:39 +00:00
Ed Maste 644aef8f84 Work around FreeBSD rtld rpath $ORIGIN limitation
FreeBSD's rtld requires the DF_ORIGIN flag set in order to process
$ORIGIN in rpath.

FreeBSD bug http://bugs.freebsd.org/187114

llvm-svn: 203419
2014-03-09 18:48:45 +00:00
Yaron Keren 225d550b05 Cleaning up a bunch of pre-Visual C++ 2012 build hacks.
llvm-svn: 202806
2014-03-04 09:23:33 +00:00
Tom Stellard e6ba81dae9 Add patch level to llvm version in CMake and Autoconf
The shared library generated by autoconf will now be called
libLLVM-$(VERSION_MAJOR).$(VERSION_MINOR).$(VERSION_PATCH)$(VERSION_SUFFIX).so
and a symlink named
libLLVM-$(VERSION_MAJOR).$(VERSION_MINOR)$(VERSION_SUFFIX).so will
also be created in the install directory.

llvm-svn: 202720
2014-03-03 15:22:00 +00:00
Chandler Carruth 25eacf7e77 [C++11] Switch the CMake option from LLVM_ENABLE_CXX11 (default on) to
LLVM_ENABLE_CXX1Y (default *off*). =D C++98 is dead. Long live C++11.

I don't exactly recommend using C++1y just yet though...

llvm-svn: 202567
2014-03-01 03:16:07 +00:00
Reid Kleckner 7c8743da59 [CMake] Remove dead C backend option
Patch by Jevin Sweval!

llvm-svn: 202556
2014-02-28 22:51:27 +00:00
Chandler Carruth 83163ee127 [C++11] Switch CMake to use C++11 by default! Next up, autoconf/make!
Now, please don't get too excited. I've just toggled the default to suss
out the last remaining bot problems. This does *not* mean we can all go
write lots of C++11 code yet. I at least want to let the dust settle
from the bots first.

llvm-svn: 202542
2014-02-28 21:30:03 +00:00
Rafael Espindola c80968e954 Centralize the handling of install_name and rpath.
This centralizes the Makefile handling of -install_name and -rpath. It also
moves the cmake build to using @rpath. The reason being that libclang needs it,
and it works for everything else.

A followup patch will move clang to using this and then there will be a single
point to edit to support other systems.

llvm-svn: 202499
2014-02-28 13:48:03 +00:00
Alexey Samsonov f431a8386c [CMake] Introduce LLVM_BUILD_EXTERNAL_COMPILER_RT option
llvm-svn: 202363
2014-02-27 08:59:01 +00:00
Rafael Espindola 2869d85135 Use an install name dir of @executable_path/../lib instead of @rpath.
Using @executable_path/../lib matches what we have on Makefiles and works
with older versions of OS X too.

llvm-svn: 202302
2014-02-26 21:51:28 +00:00
NAKAMURA Takumi 9cd9ad6b9d [CMake] Introduce cmake_policy(CMP0022) for target_link_libraries(INTERFACE|PRIVATE).
For now, use both keywords, INTERFACE and PRIVATE via the variable,
  - ${cmake_2_8_12_INTERFACE}
  - ${cmake_2_8_12_PRIVATE}

They could be cleaned up when we introduce 2.8.12.

llvm-svn: 202239
2014-02-26 06:45:11 +00:00
Bernard Ogden 301bafed78 Permit CMAKE_INSTALL_RPATH to be set on command line
Commit 201921 overrides setting of CMAKE_INSTALL_RPATH via the
command line. Last time this happened we applied another patch
to only set CMAKE_INSTALL_RPATH if already defined (r197825).
This patch does the same thing again, but only for the UNIX
case - we leave APPLE alone as presumably the original committer
is happy with the non-overriding behaviour.

llvm-svn: 202085
2014-02-24 22:23:43 +00:00
Rafael Espindola 478873ce46 Revert "Revert "Use relative rpath so that the installation and build dirs are relocatable.""
This reverts commit r201934.

Polly has been fixed to work with this.

llvm-svn: 201936
2014-02-22 13:29:31 +00:00
Rafael Espindola ac488fcb42 Revert "Use relative rpath so that the installation and build dirs are relocatable."
This reverts commit r201921.

This should bring the polly bots back. I will try to build it locally to
understand how cmake was setting the rpath of LLVMPolly.so.

llvm-svn: 201934
2014-02-22 12:36:28 +00:00
Rafael Espindola 03bb9e183a Use relative rpath so that the installation and build dirs are relocatable.
This works by asking cmake to use the "install rpath", but setting that rpath
to be relative.

Thanks a lot to Brad King for the help with CMake!

llvm-svn: 201921
2014-02-22 00:54:14 +00:00
NAKAMURA Takumi c70006e1fc Fix LLVM install rules to not set permissions on include/
The CMake install(DIRECTORY) command documents that it sets permissions
on directories it is asked to install.  Since the <prefix>/include
directory may not be exclusive to the LLVM installation, we should not
ask CMake to manage permissions of that directory for us.  Instead, give
only our own include/llvm and include/llvm-c subdirectories to the
install(DIRECTORY) command.

Fixes PR4500. Patch by Brad King.

llvm-svn: 201075
2014-02-10 10:50:55 +00:00
Jordan Rose 31c5b7b696 [CMake] Move -stdlib=libc++ handling into its own file.
r200744 moved this into cmake/config-ix.cmake, so that it would happen very
early in the build process. However, standalone builds of Clang and other
external projects never include this file (which is correct).

Now, -stdlib=libc++ and the LLVM_COMPILER_IS_GCC_COMPATIBLE option are
both set in a new include file, HandleLLVMStdlib, which is included by
both config-ix.cmake and HandleLLVMOptions.cmake. This preserves existing
behavior for projects relying on HandleLLVMOptions and still does the
right thing for builds of LLVM itself.

llvm-svn: 200811
2014-02-05 00:02:37 +00:00
Alexey Samsonov 34a466f8da [CMake] Add -stdlib=libc++ to host Clang build flags before performing any header search
If LLVM_ENABLE_LIBCXX is specified, we should append -stdlib=libc++ to build
flags as early as possible, in particular, before we check for header presence
(as -stdlib=libc++ modifies header lookup rules). Otherwise we can find a header
at configure time (w/o -stdlib=libc++) but fail to find it at build time
(with -stdlib=libc++). See PR18569 for more details.

llvm-svn: 200744
2014-02-04 07:55:18 +00:00
NAKAMURA Takumi 85d65ff49b [CMake] Move cmake_minimum_required(2.8.8) at the top.
Suggested by Stephen Kelly.

llvm-svn: 200645
2014-02-02 16:59:36 +00:00
NAKAMURA Takumi 5a0234f3b1 [CMake] Move libgtest for external projects.
llvm-svn: 200558
2014-01-31 17:32:46 +00:00
NAKAMURA Takumi ce78b80eea [CMake] Introduce new scheme of LLVM_TOOLS_BINARY_DIR and LLVM_LIBRARY_DIR
In LLVM build tree, they points corresponding INTDIR.

  In Clang standalone tree, they points external dir (llvm-config's --bindir and --libdir).

llvm-svn: 199595
2014-01-19 12:52:10 +00:00
NAKAMURA Takumi 0190e9445a [CMake] Add comments in llvm/CMakeLists.txt.
llvm-svn: 199594
2014-01-19 12:47:26 +00:00
NAKAMURA Takumi 0ec65f1ad0 [CMake] Deprecate LLVM_TOOLS_BINARY_DIR.
llvm-svn: 199593
2014-01-19 12:47:22 +00:00
Chandler Carruth 8388597361 Factor the option and checking of compiler version better. Put the
option with the others in the top level CMakeLists, and put the check in
HandleLLVMOptions. This will also let it be used from the standalone
Clang builds.

llvm-svn: 199149
2014-01-13 22:21:34 +00:00
Chandler Carruth 5aad86a940 Raise the minimum CMake version to 2.8.8 -- we have a report that the
compiler version checking doesn't work on 2.8.7. This feature was
documented in 2.8.10, but existed for an unknown amount of time before
that.

I'm actually happy to revert this and remove the use of the feature if
there is anyone with a specific problem updating CMake. Please just let
me know. I don't want to re-implement this CMake functionality unless
there is a reason, and this is the only real way to find that out.

llvm-svn: 199148
2014-01-13 22:05:20 +00:00
NAKAMURA Takumi f0a1ab8f2a [CMake] Move BUG_REPORT_URL from clang to llvm.
It was too late to set BUG_REPORT_URL after configure_file(config.h).
BUG_REPORT_URL in config.h.cmake would be updated at 2nd run of cmake.
It caused many recompilations.

FYI, configure handles BUG_REPORT_URL in llvm side.

llvm-svn: 199076
2014-01-13 05:25:13 +00:00
Jean-Daniel Dupas edad1b4797 Introduce a cmake LLVM_ENABLE_LIBCXX build parameter to compile using libc++ instead of the system default
Summary:
This parameter is required to build C++11 projects (like lld or lldb) on OS X as the default STL does not provide c++ classes.


CC: llvm-commits, triton

Differential Revision: http://llvm-reviews.chandlerc.com/D2381

llvm-svn: 198625
2014-01-06 18:27:27 +00:00
NAKAMURA Takumi baa9f533fe [CMake][VS][XCode] Restruct the output directory layout more comfortable, ${BINARY_DIR}/${BUILD_MODE}/(bin|lib)
We have been seeing nasty directory layout with CMake multiconfig, such as,
  bin/Release/clang.exe
  lib/clang/3.x/...
  lib/Release/clang/3.x/.. (duplicated)

Move the layout similar to autoconf's;
  Release/bin/clang.exe
  Release/lib/clang/3.x/...

Checked on Visual Studio 10. Could you guys please confirm my change on XCode(and other multiconfig builders)?

Note: Don't set variables CMAKE_*_OUTPUT_DIRECTORY any more, or a certain builder, for eaxample, msbuild.exe, would be confused.
llvm-svn: 198205
2013-12-30 06:48:30 +00:00
Artyom Skrobov 01c1825b6c Resinstate the command line taking priority over CMakeLists in setting CMAKE_INSTALL_RPATH
llvm-svn: 197825
2013-12-20 18:13:12 +00:00
Rafael Espindola 6ad1b3feb4 Use $ORIGIN when setting rpath.
This matches what the configure build does.

Patch by Jan Vesely.

Fixes pr14189.

llvm-svn: 197743
2013-12-19 23:13:58 +00:00
NAKAMURA Takumi e73df85038 [CMake] Introduce LLVM_RUNTIME_OUTPUT_INTDIR and LLVM_LIBRARY_OUTPUT_INTDIR to reduce references to CMAKE_CFG_INTDIR.
Each of them forms like;
  ${CMAKE_BINARY_DIR}/bin/${CMAKE_CFG_INTDIR}
  ${CMAKE_BINARY_DIR}/lib/${CMAKE_CFG_INTDIR}

llvm-svn: 197394
2013-12-16 16:03:08 +00:00
NAKAMURA Takumi 03932fba3a [CMake] Introduce LLVM_INCLUDE_DIR.
llvm-svn: 197392
2013-12-16 15:05:39 +00:00
Arnaud A. de Grandmaison b697b538dc CMake : optionaly enable LLVM to be compiled with -std=c++11 (default: off)
In some case, it may be required to build LLVM in C++11 mode, as some the subprojects (like lldb) requires it.

This mimics the autoconf behaviour.

However, given the discussions on the switch to C++11 of the codebase, this behaviour should evolve to default to C++11 with some checks of the compiler capabilities.

llvm-svn: 195727
2013-11-26 10:33:53 +00:00
Hans Wennborg 09d108b79e CMake: Some changes to package version names:
- Allow overriding PACKAGE_VERSION from the command-line
- Use PACKAGE_VERSION to set CPACK_PACKAGE_VERSION (used by the Win installer)
- Don't include the version number in the CPack install dir or registry key.

Differential revision: http://llvm-reviews.chandlerc.com/D2245

llvm-svn: 195379
2013-11-21 22:47:21 +00:00
NAKAMURA Takumi a5997c4e4a llvm/CMakeLists.txt: Update LLVM_VERSION_MINOR to 5.
llvm-svn: 195247
2013-11-20 13:11:48 +00:00
Hans Wennborg 4656ec1e70 Revert my CMake patches concerning building with /MT (r194589, r194596)
Reid pointed out we already have LLVM_USE_CRT_{buildtype} to set it.

llvm-svn: 194604
2013-11-13 20:29:10 +00:00
Hans Wennborg fc59812bee CMake: make building with /MT an option instead of always forcing it
for release builds.

This is a follow-up to r194589. Aaron pointed out that building
libraries with /MT and using them in an application that uses a
different run-time library can be a bad idea.

Move the option to build with /MT behind a CMake option so it can be
turned on selectively, such as when building the toolchain installer.

llvm-svn: 194596
2013-11-13 19:12:02 +00:00
Rafael Espindola fc0447b8e4 Modify CMakeLists.txt to work around pr17763 and bring some bots back.
llvm-svn: 193813
2013-10-31 22:13:41 +00:00
Bill Wendling 8edd8f9298 Remove 2.4 from the list of supported Python versions.
llvm-svn: 193541
2013-10-28 21:22:23 +00:00
Hans Wennborg bef50abea9 CMake: set stack size for MSVC in just one place
After r192904, Reid pointed out he thought we already set the stack
size for MSVC. Turns out we did, but it didn't seem to work.

This commit sets the stack size in a single place, using
CMAKE_EXE_LINKER_FLAGS because that seems to be the way that works
best.

llvm-svn: 192912
2013-10-17 18:39:47 +00:00
Alexey Samsonov 693e1a54a7 Restore LLVM_BUILD_RUNTIME option that was deleted in r191835, but is still used to control building of compiler-rt and libcxx
llvm-svn: 191948
2013-10-04 10:41:38 +00:00
Chandler Carruth ea56494625 Remove the very substantial, largely unmaintained legacy PGO
infrastructure.

This was essentially work toward PGO based on a design that had several
flaws, partially dating from a time when LLVM had a different
architecture, and with an effort to modernize it abandoned without being
completed. Since then, it has bitrotted for several years further. The
result is nearly unusable, and isn't helping any of the modern PGO
efforts. Instead, it is getting in the way, adding confusion about PGO
in LLVM and distracting everyone with maintenance on essentially dead
code. Removing it paves the way for modern efforts around PGO.

Among other effects, this removes the last of the runtime libraries from
LLVM. Those are being developed in the separate 'compiler-rt' project
now, with somewhat different licensing specifically more approriate for
runtimes.

llvm-svn: 191835
2013-10-02 15:42:23 +00:00
Rafael Espindola 4102eafdc8 Set the minimal stack size with msvc when using cmake >= 2.8.11.
This makes sure we get the same behavior with all supported cmake versions. Once
we support only versions >= 2.8.11 we can experiment with other values or just
setting it for some binaries.

Patch by Greg Bedwell.

llvm-svn: 191372
2013-09-25 14:06:55 +00:00
Daniel Dunbar eb6c708d92 [conf] Add config variable to disable crash related overrides.
- We do some nasty things w.r.t. installing or overriding signal handlers in
   order to improve our crash recovery support or interaction with crash
   reporting software, and those things are not necessarily appropriate when
   LLVM is being linked into a client application that has its own ideas about
   how to do things. This gives those clients a way to disable that handling at
   build time.

 - Currently, the code this guards is all Apple specific, but other platforms
   might have the same concerns so I went for a more generic configure
   name. Someone who is more familiar with library embedding on Windows can
   handle choosing which of the Windows/Signals.inc behaviors might make sense
   to go under this flag.

 - This also fixes the proper autoconf'ing of ENABLE_BACKTRACES. The code
   expects it to be undefined when disabled, but the autoconf check was just
   defining it to 0.

llvm-svn: 189694
2013-08-30 20:39:21 +00:00
Reid Kleckner c974f09731 Substitute LLVM's version into the msbuild property file at config time
Requires shuffling the CPack code up before add_subdirectory(tools), but
that's where the version settings are anyway.

llvm-svn: 189615
2013-08-29 22:09:43 +00:00
Hans Wennborg d2cbe22b4a cmake: Add msbuild integration to the install
This adds the msbuild integration files to the install, provides batch scripts
for (un)installing it in a convenient way, and hooks up the nsis installer to
run those scripts.

Differential Revision: http://llvm-reviews.chandlerc.com/D1537

llvm-svn: 189434
2013-08-28 01:19:26 +00:00
Hans Wennborg d489b7c48f CMake: move lto.h install to tools/lto/CMakeLists.txt
It looked misplaced in the main CMakeLists.txt file.

llvm-svn: 189230
2013-08-26 16:54:12 +00:00
Michael Gottesman 4d35b909ad [autotools->cmake] Enable generation of doxygen documentation via cmake.
I am going to add in a subsequent patch support for generating the llvm
manpage.

llvm-svn: 189164
2013-08-24 07:25:21 +00:00
Hans Wennborg 1654627f27 CMake: Add LLVM_INSTALL_TOOLCHAIN_ONLY option.
Differential Revision: http://llvm-reviews.chandlerc.com/D1428

llvm-svn: 189155
2013-08-24 00:20:36 +00:00
Hans Wennborg 89065d8632 CMake: polish the Windows packaging rules
This tweaks the CMake rules for building an installation package on Windows:
 - Sets license file (otherwise nsis shows an ugly default)
 - Adds LLVM logo
 - Shows "do you want to add this to the system path" dialog.

Differential Revision: http://llvm-reviews.chandlerc.com/D1414

llvm-svn: 188509
2013-08-15 23:44:31 +00:00
Michael Gottesman 21c69487a4 Fixed typo in CMakeLists.txt.
We were marking both LLVMBUILDOUTPUT and LLVMBUILDERRORS as
ERROR_VARIABLES when clearly LLVMBUILDOUTPUT should be marked as
OUTPUT_VARIABLE.

llvm-svn: 188444
2013-08-15 04:16:12 +00:00
Chandler Carruth f11f1e43de Target a minimal terminfo library rather than necessarily a full curses
library for color support detection. This still will use a curses
library if that is all we have available on the system. This change
tries to use a smaller subset of the curses library, specifically the
subset that is on some systems split off into a separate library. For
example, if you install ncurses configured --with-tinfo, a 'libtinfo' is
install that provides just the terminfo querying functionality. That
library is now used instead of curses when it is available.

This happens to fix a build error on systems with that library because
when we tried to link ncurses into the binary, we didn't pull tinfo in
as well. =]

It should also provide an easy path for supporting the NetBSD
libterminfo library, but as I don't have access to a NetBSD system I'm
leaving adding that support to those folks.

llvm-svn: 188160
2013-08-12 09:49:17 +00:00
Chandler Carruth cad7e5e0b4 Add support for linking against a curses library when available and
using it to detect whether or not a terminal supports colors. This
replaces a particularly egregious hack that merely compared the TERM
environment variable to "dumb". That doesn't really translate to
a reasonable experience for users that have actually ensured their
terminal's capabilities are accurately reflected.

This makes testing a terminal for color support somewhat more expensive,
but it is called very rarely anyways. The important fast path when the
output is being piped somewhere is already in place.

The global lock may seem excessive, but the spec for calling into curses
is *terrible*. The whole library is terrible, and I spent quite a bit of
time looking for a better way of doing this before convincing myself
that this was the fundamentally correct way to behave. The damage of the
curses library is very narrowly confined, and we continue to use raw
escape codes for actually manipulating the colors which is a much sane
system than directly using curses here (IMO).

If this causes trouble for folks, please let me know. I've tested it on
Linux and will watch the bots carefully. I've also worked to account for
the variances of curses interfaces that I could finde documentation for,
but that may not have been sufficient.

llvm-svn: 187874
2013-08-07 08:47:36 +00:00
Eric Christopher 3987806087 Add capability for building with -gsplit-dwarf to the cmake build.
In limited testing this seems to work. Caveat emptor.

llvm-svn: 187452
2013-07-30 21:44:10 +00:00
Rafael Espindola 729866670b Remove the mblaze backend from llvm.
Approval in here http://lists.cs.uiuc.edu/pipermail/llvmdev/2013-July/064169.html

llvm-svn: 187145
2013-07-25 18:55:05 +00:00
Duncan Sands 80f122fefb Tweak the cmake interaction between CMAKE_BUILD_TYPE and LLVM_ENABLE_ASSERTIONS.
The issue is that CMAKE_BUILD_TYPE=RelWithDebInfo LLVM_ENABLE_ASSERTIONS=ON was
not building with assertions enabled.  (I was unable to find what in the LLVM
source tree was adding -DNDEBUG to the build line in this case, so decided that
it must be cmake itself that was adding it - this may depend on the cmake
version).  The fix treats any mode that is not Debug as being the same as
Release for this purpose (previously it was being assumed that cmake would only
add -DNDEBUG for Release and not for RelWithDebInfo or MinSizeRel).  If other
versions of cmake don't add -DNDEBUG for RelWithDebInfo then that's OK: with
this change you just get a useless but harmless -UNDEBUG or -DNDEBUG.

llvm-svn: 186499
2013-07-17 09:34:51 +00:00
Andy Gibbs f5dede1beb Support using "host" as a target in LLVM_TARGETS_TO_BUILD when using cmake.
llvm-svn: 184923
2013-06-26 07:57:53 +00:00
Reid Kleckner 63784ba5b9 Look for Python 2 before Python 3 in CMakeLists.txt
All of LLVM's Python scripts only support Python 2 for widely understood
reasons.

Patch by Yonggang Luo.

llvm-svn: 184732
2013-06-24 13:21:16 +00:00
Rafael Espindola cf1e6574c2 Allow duplicates in LLVM_TARGETS_TO_BUILD and LLVM_EXPERIMENTAL_TARGETS_TO_BUILD.
Should fix the cmake bots that were already building R600.

llvm-svn: 182447
2013-05-22 02:45:28 +00:00
Rafael Espindola f6474d2834 Make R600 non-experimental.
The r600 backend has been in tree for some time now. Marking it as
non-experimental to avoid accidental breakage.

llvm-svn: 182442
2013-05-22 00:35:47 +00:00
Tim Northover c17f3f75c5 AArch64: enable MCJIT unittests
llvm-svn: 182217
2013-05-19 19:44:56 +00:00
Rafael Espindola eaf9798d2a Change version to 3.4 in the cmake build too.
llvm-svn: 181353
2013-05-07 20:44:22 +00:00
Ulrich Weigand 92b2085cd3 [SystemZ] Add to --enable-targets=all
This patch finally enables the SystemZ target in the default build
(with --enable-targets=all).

Patch by Richard Sandiford.

llvm-svn: 181209
2013-05-06 16:23:07 +00:00
Ulrich Weigand 1ceebf6ee0 [SystemZ] Add configure bits
This patch wires up the SystemZ target in configure, so that it can now be
built using --enable-targets=systemz.   It is not yet included in the default
build (--enable-targets=all); this will be done by a follow-up patch.

Patch by Richard Sandiford.

llvm-svn: 181208
2013-05-06 16:22:34 +00:00
Alexey Samsonov 2fb337e77a Add basic zlib support to LLVM. This would allow to use compression/uncompression in selected LLVM tools.
llvm-svn: 180083
2013-04-23 08:28:39 +00:00
Tim Northover 865f4bcb5d Enable all targets by default on Visual Studio.
llvm-svn: 179518
2013-04-15 11:53:05 +00:00
Tim Northover c630202c6f Revert "TMP"
This reverts commit e652085eacbec62e4157d08d3f2f875e6e6d5bb4.

llvm-svn: 179172
2013-04-10 12:08:57 +00:00
Tim Northover 9674ad8cb6 TMP
llvm-svn: 179170
2013-04-10 12:08:25 +00:00
Rafael Espindola 3add3e9c4a Move yaml2obj to tools too.
llvm-svn: 178904
2013-04-05 20:00:35 +00:00
Rafael Espindola 87a0290941 Move obj2yaml to tools to sort out make's dependencies.
llvm-svn: 178835
2013-04-05 02:57:22 +00:00
Rafael Espindola 76f92277ca Don't export symbols in every binary on linux.
On freebsd this makes sure that symbols are exported on the binaries that need
them. The net result is that we should get symbols in the binaries that need
them on every platform.

On linux x86-64 this reduces the size of the bin directory from 262MB to 250MB.

Patch by Stephen Checkoway.

llvm-svn: 178725
2013-04-04 01:01:32 +00:00
Alexey Samsonov 75789a2133 Add CMake option LLVM_USE_SANITIZER={Address,Memory,MemoryWithOrigins} to simplify bootstrap of LLVM/Clang under ASan/MSan
llvm-svn: 177992
2013-03-26 07:49:46 +00:00
Tim Northover 1c82f3eebd Revert CMake version bump since we don't actually need 2.8.6 any more.
The problem call was removed in the interim. Apologies.

llvm-svn: 175435
2013-02-18 11:53:37 +00:00
Tim Northover d2678d6ba6 Note minimum required version of CMake
We already use features from 2.8.6, this just gives a slightly more friendly
message when the dependency isn't met.

Patch from Keith Walker.

llvm-svn: 175434
2013-02-18 11:41:04 +00:00
David Chisnall 7945013a71 On FreeBSD, we need to look in /usr/local/include so that libxml2 finds iconv.h
Patch by Jonathan Anderson!

llvm-svn: 175167
2013-02-14 15:40:44 +00:00
Tim Northover 43852f20ef Enable AArch64 as a target built by default.
llvm-svn: 174322
2013-02-04 12:32:21 +00:00
Joel Jones 54594f258d Fix spelling
llvm-svn: 170130
2012-12-13 15:25:07 +00:00
NAKAMURA Takumi f9573f1174 [CMake] TARGET_TRIPLE may be internal alias of LLVM_DEFAULT_TARGET_TRIPLE.
llvm-svn: 169726
2012-12-10 07:14:29 +00:00
Benjamin Kramer 6900a4ad8c Kick off 3.3 cycle for LLVM trunk.
llvm-svn: 168272
2012-11-17 22:01:08 +00:00
Eric Christopher aa3d19e782 Fix CMake build.
llvm-svn: 167986
2012-11-14 22:10:47 +00:00
Andrew Kaylor 5808c7d828 Removing dependency on third party library for Intel JIT event support.
Patch committed on behalf of Kirill Uhanov

llvm-svn: 164831
2012-09-28 17:35:20 +00:00
Benjamin Kramer 5651cbdc13 Make backtraces work again with both the configure and cmake build.
llvm-svn: 164817
2012-09-28 10:10:46 +00:00
Sebastian Pop faeca292a2 enable cross compilation with cmake
This patch allows us to use cmake to specify a cross compiler: target different
than host. In particular, it moves LLVM_DEFAULT_TARGET_TRIPLE and TARGET_TRIPLE
variables from cmake/config-ix.cmake to the toplevel CMakeLists.txt to make them
available at configure time.

Here is the command line that I have used to test my patches to create a Hexagon
cross compiler hosted on x86:

$ cmake -G Ninja -D LLVM_TARGETS_TO_BUILD:STRING=Hexagon -D TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_DEFAULT_TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_TARGET_ARCH:STRING=hexagon-unknown-linux-gnu ..
$ ninja check

llvm-svn: 162219
2012-08-20 19:56:52 +00:00
Victor Oliveira 18023e4b20 bug in experimental targets
llvm-svn: 161995
2012-08-15 22:35:36 +00:00
Victor Oliveira 9d4b8f5a7f Support for experimental targets
Added LLVM_EXPERIMENTAL_TARGETS_TO_BUILD in CMake and --enable-experimental-targets in configure.

llvm-svn: 161561
2012-08-09 01:13:59 +00:00
Sebastian Pop 82622dc3e9 revert my previous patch
llvm-svn: 161505
2012-08-08 18:04:45 +00:00
Sebastian Pop 7e9da1d4e8 enable Hexagon target from cmake
This patch allows us to use cmake to specify a cross compiler for Hexagon.

In particular, the patch adds a missing case for the target Hexagon in
cmake/config-ix.cmake, and it moves LLVM_DEFAULT_TARGET_TRIPLE and TARGET_TRIPLE
variables from cmake/config-ix.cmake to the toplevel CMakeLists.txt to make them
available at configure time. Here is the command line that I have used to test
my patches:

$ cmake -G Ninja -D BUILD_SHARED_LIBS:BOOL=ON -D LLVM_TARGETS_TO_BUILD:STRING=Hexagon -D TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_DEFAULT_TARGET_TRIPLE:STRING=hexagon-unknown-linux-gnu -D LLVM_TARGET_ARCH:STRING=hexagon-unknown-linux-gnu -D LLVM_ENABLE_PIC:BOOL=OFF ..
$ ninja check

llvm-svn: 161504
2012-08-08 17:45:43 +00:00
Michael J. Spencer 1ffd9de4f1 Add yaml2obj. A utility to convert YAML to binaries.
yaml2obj takes a textual description of an object file in YAML format
and outputs the binary equivalent. This greatly simplifies writing
tests that take binary object files as input.

llvm-svn: 161205
2012-08-02 19:16:56 +00:00
Tom Stellard 95bd0be903 Revert "Build script changes for R600/SI Codegen v6"
This reverts commit e3013202259ed1e006c21817c63cf25d75982721.

llvm-svn: 160301
2012-07-16 18:19:46 +00:00
Tom Stellard 812e652b43 Build script changes for R600/SI Codegen v6
llvm-svn: 160272
2012-07-16 14:17:16 +00:00
Chandler Carruth 69ce6652b8 Hoist LLVM's lit testsuite infrastructure into module so that it can be
re-used. Also, build in direct support for accumulating a set of lit
parameters, arguments, and testsuites to run as part of a 'check-all'
rule. This sinks 'check-all' from a Clang-specific construct to
a generic construct of the project.

llvm-svn: 159482
2012-06-30 10:14:14 +00:00
Marshall Clow 5d30133294 New test tool: obj2yaml
llvm-svn: 158730
2012-06-19 18:02:35 +00:00
Justin Holewinski 907f7606f2 Remove the PTX back-end and all of its artifacts (triple, etc.)
This back-end was deprecated in favor of the NVPTX back-end.

NV_CONTRIB

llvm-svn: 157417
2012-05-24 21:38:21 +00:00
Manuel Klimek 13cfa00018 Make it possible to switch off solution folders. VS Express does not support
them, and requires the user to click away one error message per folder on
project load.

llvm-svn: 156472
2012-05-09 15:10:54 +00:00
Preston Gurd e65f4e66ac Make IntelJITEvents and OProfileJIT as optional libraries and add
optional library support to the llvm-build tool:
 - Add new command line parameter to llvm-build: “--enable-optional-libraries”
 - Add handing of new llvm-build library type “OptionalLibrary”
 - Update Cmake and automake build systems to pass correct flags to llvm-build
   based on configuration

Patch by Dan Malea!

llvm-svn: 156319
2012-05-07 19:38:40 +00:00
Justin Holewinski ae556d3ef7 This patch adds a new NVPTX back-end to LLVM which supports code generation for NVIDIA PTX 3.0. This back-end will (eventually) replace the current PTX back-end, while maintaining compatibility with it.
The new target machines are:

nvptx (old ptx32) => 32-bit PTX
nvptx64 (old ptx64) => 64-bit PTX

The sources are based on the internal NVIDIA NVPTX back-end, and
contain more functionality than the current PTX back-end currently
provides.

NV_CONTRIB

llvm-svn: 156196
2012-05-04 20:18:50 +00:00
NAKAMURA Takumi a83601d637 CMake: Prune redundant LLVM_COMPILER_JOBS from llvm/CMakeLists.txt. HandleLLVMOptions.cmake has it.
llvm-svn: 155284
2012-04-21 14:50:56 +00:00
Benjamin Kramer fbb9f485f8 Kick off 3.2 cycle for LLVM trunk.
llvm-svn: 155211
2012-04-20 18:15:07 +00:00
Manuel Klimek 1f8918f69d Goodbye, JSONParser...
llvm-svn: 154930
2012-04-17 17:21:17 +00:00
Michael J. Spencer 22120c47a7 Add YAML parser to Support.
llvm-svn: 153977
2012-04-03 23:09:22 +00:00
Eric Christopher 64a232343a Remove the C backend.
llvm-svn: 153307
2012-03-23 05:50:46 +00:00
Eli Bendersky 5262ad2afa Add profiling support for Intel Parallel Amplifier XE (VTune) for JITted code in LLVM.
Also refactor the existing OProfile profiling code to reuse the same interfaces with the VTune profiling code.
In addition, unit tests for the profiling interfaces were added.

This patch was prepared by Andrew Kaylor and Daniel Malea, and reviewed in the llvm-commits list by Jim Grosbach

llvm-svn: 152620
2012-03-13 08:33:15 +00:00
Dylan Noblesmith c6c7a5819d add LLVM_VERSION_MAJOR and _MINOR defines
This is useful for clients that want to maintain compatibility
across multiple releases of LLVM. Currently users like Klee and
Mesa all have to roll their own 'parse llvm-config --version
output and generate defines' solution.

Also reuse the new macros so that version information is less
redundant/likely to fall out of sync again in the future.

llvm-svn: 150405
2012-02-13 18:48:10 +00:00
Dylan Noblesmith 27fb10c29a cmake: update outdated CPack version info
Left over from r116516.

llvm-svn: 149751
2012-02-04 02:52:48 +00:00
Dylan Noblesmith af9be0b6fa cmake: make BUILD_SHARED_LIBS a visible option
It could only be specified on the commandline, and wouldn't show
up as an option in the GUI or when invoked via `cmake -i` at all.

This also tells CMake that it's a BOOL, rather than "UNINITIALIZED".

llvm-svn: 149506
2012-02-01 14:49:39 +00:00
Dylan Noblesmith 67c4970b59 capitalize project name, reference bugzilla
And fix the double-[]. It was including the [] as part of
the project name somehow, resulting in PACKAGE_TARNAME "-llvm-"
and a strange docdir default:

./configure --help | grep docdir
  --docdir=DIR           documentation root [DATAROOTDIR/doc/-llvm-]

llvm-svn: 146849
2011-12-18 18:50:16 +00:00
Manuel Klimek 2c899a181c Adds a JSON parser and a benchmark (json-bench) to catch performance regressions.
llvm-svn: 146735
2011-12-16 13:09:10 +00:00
Chandler Carruth 09880c42c6 Don't default the *cached* list of targets to build to an explicit list
of the targets we know about. Because this is cached, rebuilds won't
detect when new targets show up. It's also a bit simpler to just say
"all". If users want to restrict the target set, they can still do so,
and then the cache will preserve what they have explicitly set this
field to.

llvm-svn: 146467
2011-12-13 02:19:11 +00:00
Tony Linthicum 1213a7a57f Hexagon backend support
llvm-svn: 146412
2011-12-12 21:14:40 +00:00
NAKAMURA Takumi ba330aedce llvm/CMakeLists.txt: Fix LLVM_LIT_TOOLS_DIR since r143728. Cygwin does not need optional tools dir. MSVC and mingw may need one.
llvm-svn: 146339
2011-12-11 03:07:53 +00:00
Daniel Dunbar ab0ad4ed1e llvm-config: Replace with C++ version (was llvm-config-2).
- Another reapply of r144300, with hopefully one last fix.

llvm-svn: 145623
2011-12-01 20:18:09 +00:00
Duncan Sands b8e6cee9ca Revert commit 145449 (ddunbar) since it is breaking the dragonegg buildbots.
Original commit message:
llvm-config: Replace with C++ version (was llvm-config-2).
 - Reapply of r144300, with lots of fixes/migration easement in between.

llvm-svn: 145582
2011-12-01 10:50:19 +00:00
Daniel Dunbar 8d5cc33ad8 llvm-config: Replace with C++ version (was llvm-config-2).
- Reapply of r144300, with lots of fixes/migration easement in between.

llvm-svn: 145449
2011-11-29 22:56:31 +00:00
Daniel Dunbar 933b43f188 Revert r144300 "llvm-config: Replace with C++ version (was llvm-config-2).",
which didn't appear ready for prime time.

llvm-svn: 144309
2011-11-10 19:59:35 +00:00
Daniel Dunbar 166c804893 llvm-config: Replace with C++ version (was llvm-config-2).
llvm-svn: 144300
2011-11-10 18:49:59 +00:00
Daniel Dunbar 807c6e4e5f build/Make & CMake: Pass the appropriate --native-target and --enable-targets
options to llvm-build, so the all-targets etc. components are defined properly.

llvm-svn: 144255
2011-11-10 01:16:48 +00:00
Chandler Carruth cd22ee3f17 CMake should join the party in a post 3.0 world. ;] This brings CMake's
version in-line with the configure-based version.

llvm-svn: 143834
2011-11-05 21:18:59 +00:00
Daniel Dunbar 6437126f19 build/cmake: Enable initial llvm-build integration.
- Generates the llvm-config-2 LibraryDependencies.inc file.
 - Generates dependency information so that cmake will automatically reconfigure
   when LLVMBuild.txt files are changed.

llvm-svn: 143793
2011-11-05 06:30:03 +00:00
Daniel Dunbar 21079cad11 build/cmake: Change to require Python be available.
llvm-svn: 143742
2011-11-04 23:04:05 +00:00