support it.

llvm-svn: 55557

Patch by Hasso Tepper!

llvm-svn: 52781

llvm-svn: 52685

We will keep the old projects/llvm-test working for existing installs.

The changes to configure are made manually, since I lack autoconf-2.6. Someone
might want to run AutoGen.sh to see if that changes anything.

llvm-svn: 52675

llvm-svn: 51688

Regenerated configure.

llvm-svn: 51096

llvm-svn: 51056

llvm-svn: 50935

llvm-svn: 50189

llvm-svn: 48148

llvm-svn: 48008

    http://www.gnu.org/software/autoconf/manual/autoconf.html#Generic-Programs

llvm-svn: 47943

llvm-svn: 47065

llvm-svn: 46761

Regenerate configure with 2.60. 

llvm-svn: 46119

llvm-svn: 44973

put it in a new header System/Host.h instead.
Instead of getting the endianness from configure,
calculate it directly.

llvm-svn: 44959

using the minimum possible number of bytes.  For little
endian targets run on little endian machines, apints are
stored in memory from LSB to MSB as before.  For big endian
targets on big endian machines they are stored from MSB to
LSB which wasn't always the case before (if the target and
host endianness doesn't match values are stored according
to the host's endianness).  Doing this requires knowing the
endianness of the host, which is determined when configuring -
thanks go to Anton for this.  Only having access to little
endian machines I was unable to properly test the big endian
part, which is also the most complicated...

llvm-svn: 44796

llvm-svn: 44628

llvm-svn: 44586

llvm-svn: 44478

llvm-svn: 42575

llvm-svn: 42533

llvm-svn: 42529

llvm-svn: 42527

llvm-svn: 42461

llvm-svn: 42241

llvm-svn: 42164

llvm-svn: 42092

Fix broken default help strings for enable-shared, enable-static, and enable-fast-install. Regenerate configure script.

llvm-svn: 42066

llvm-svn: 41941

llvm-svn: 41568

llvm-svn: 41138

llvm-svn: 40601

llvm-svn: 39983

llvm-svn: 39802

llvm-svn: 38444

llvm-svn: 37854

llvm-svn: 37852

--enable-expensive-checks allows the developer to enable runtime
checking that can greatly increase compile time.  Currently it only
turns on _GLIBCXX_DEBUG.  Other expensive debugging checks added later
should be controlled by this configure option.

This patch also updates llvm-config with a --cppflags option to inform
llvm-gcc how to build itself so that it is compatible with an llvm that
was built with _GLIBCXX_DEBUG.

llvm-svn: 37777