* Ensure #includes are wrapped with appropriate HAVE_ guards

llvm-svn: 19156

* Consolidate implementation for Unix systems into Unix/TimeValue.cpp
* Avoid use of symbolic link to #include platform-specific implementation.

llvm-svn: 19155

* Consolidate implementation for Unix systems into Unix/Program.cpp
* Avoid use of symbolic link to #include platform-specific implementation.

llvm-svn: 19154

* Consolidate implementation for Unix systems into Unix/Signals.cpp
* Avoid use of symbolic link to #include platform-specific implementation.

llvm-svn: 19153

* Consolidate implementation for Unix systems into Unix/Memory.cpp
* Avoid use of symbolic link to #include platform-specific implementation.

llvm-svn: 19152

* Consolidate implementation for Unix systems into Unix/MappedFile.cpp
* Avoid use of symbolic link to #include platform-specific implementation.

llvm-svn: 19151

* Consolidate implementation for Unix systems into Unix/Process.cpp
* Avoid use of symbolic link to #include platform-specific implementation.

llvm-svn: 19150

SysConf abstraction was pointless because it had a single function in it that
pertained only to the current process. So merge it into the Process abstraction
and remove the files completely.

llvm-svn: 19149

* Add checks for sterror and strerror_r functions
* Add check to determine if /dev/zero is needed for allocating RWX memory.

llvm-svn: 19148

Provide a check to determine if /dev/zero is needed for AllocateRWX function.

llvm-svn: 19147

the path names correctly.

llvm-svn: 19146

other #define's.

llvm-svn: 19145

llvm-svn: 19144

still viable and will make use of the resurrected --with-llvmgccdir
configure option.

llvm-svn: 19143

* Make sure all headers used by lib/System have checks
* Use "standard" autoconf checks for certain problematic headers
For PR432:
* Resurrect --with-llvmgccdir so a specific llvm-gcc/llvm-g++ installation
  can be specified.

llvm-svn: 19142

Old versions of the C runtime somehow get loaded into the process.  Make
sure they aren't searched for symbols.

llvm-svn: 19141

llvm-svn: 19140

llvm-svn: 19139

llvm-svn: 19138

ltdl's LGPL license would infect all of LLVM.

llvm-svn: 19137

llvm-svn: 19136

value for the --with-llvmgccdir configure option which is no longer
supported.

llvm-svn: 19135

Merge implementations of isValid and GetTemporaryDirectory into this file. There
is not any point having the operating system specific files for such little
variation between the Unix family of systems.

llvm-svn: 19134

This implementation is no longer needed, its been merged to Unix/Path.cpp since
there is such little variation between the platforms.

llvm-svn: 19133

Use the LLVM_ON_UNIX and LLVM_ON_WIN32 #defines to include the implementation
instead of relying upon the "platform" link

llvm-svn: 19132

Create new variables LLVM_ON_UNIX and LLVM_ON_WIN32 so we can start getting
rid of reliance upon a symbolic link to switch implementations in lib/System

llvm-svn: 19131

llvm-svn: 19130

is now implemented via ltdl.cpp which has its own way of dealing with
the different platforms.

llvm-svn: 19129

CFE tools can find the correct LLVM tools to invoke.

llvm-svn: 19128

correct variable to get a "set the path first" invocation of those tools.

llvm-svn: 19127

* When reconfiguring, make sure the config.cache file is blown away so that
  its (old) values don't short-circuit doing the tests. When a reconfigure
  is done, it should be done from scratch, without the cache.
* For dist-check, don't pass --with-llvmgccdir any more because configure
  doesn't have this option any more.

llvm-svn: 19126

llvm-svn: 19125

llvm-svn: 19124

expands to a full path name. Substitute $outputname.exp" instead and it
makes a viable temporary file name. This gets around the problem with lli
on Cygwin linking but not having any "C" library functions linked into it.

llvm-svn: 19123

llvm-svn: 19122

llvm-svn: 19121

llvm-svn: 19120

a function call at the core of the loop inline and removing unused
stack variables from an often called function. This doesn't improve things
much, the real saving will be by reducing the number of calls to this
function (100K+ when linking kimwitu++).

llvm-svn: 19119

Patch contributed by Markus F.X.J. Oberhumer.

llvm-svn: 19118

building Cygwin.

llvm-svn: 19117