Remove the configure and cmake checks for sys/wait.h

If we don't have sys/wait.h and we're on a unix system there's no way
that several of the llvm tools work at all. This includes clang.

Just remove the configure and cmake checks entirely - we'll get a
build error instead of building something broken now.

llvm-svn: 243957

2 files changed, 1 insertions, 19 deletions

diff --git a/llvm/lib/Support/Unix/Program.inc b/llvm/lib/Support/Unix/Program.inc
index 8947b62e4dc..a8d1fe3c07d 100644
--- a/llvm/lib/Support/Unix/Program.inc
+++ b/llvm/lib/Support/Unix/Program.inc
@@ -323,7 +323,6 @@ namespace llvm {
 
 ProcessInfo sys::Wait(const ProcessInfo &PI, unsigned SecondsToWait,
                       bool WaitUntilTerminates, std::string *ErrMsg) {
-#ifdef HAVE_SYS_WAIT_H
   struct sigaction Act, Old;
   assert(PI.Pid && "invalid pid to wait on, process not started?");
 
@@ -417,12 +416,6 @@ ProcessInfo sys::Wait(const ProcessInfo &PI, unsigned SecondsToWait,
     // signal during execution as opposed to failing to execute.
     WaitResult.ReturnCode = -2;
   }
-#else
-  if (ErrMsg)
-    *ErrMsg = "Program::Wait is not implemented on this platform yet!";
-  ProcessInfo WaitResult;
-  WaitResult.ReturnCode = -2;
-#endif
   return WaitResult;
 }
 
diff --git a/llvm/lib/Support/Unix/Unix.h b/llvm/lib/Support/Unix/Unix.h
index e16a226a8ea..871e612f6c1 100644
--- a/llvm/lib/Support/Unix/Unix.h
+++ b/llvm/lib/Support/Unix/Unix.h
@@ -29,6 +29,7 @@
 #include <cstring>
 #include <string>
 #include <sys/types.h>
+#include <sys/wait.h>
 
 #ifdef HAVE_UNISTD_H
 #include <unistd.h>
@@ -43,22 +44,10 @@
 #endif
 #include <time.h>
 
-#ifdef HAVE_SYS_WAIT_H
-# include <sys/wait.h>
-#endif
-
 #ifdef HAVE_DLFCN_H
 # include <dlfcn.h>
 #endif
 
-#ifndef WEXITSTATUS
-# define WEXITSTATUS(stat_val) ((unsigned)(stat_val) >> 8)
-#endif
-
-#ifndef WIFEXITED
-# define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
-#endif
-
 /// This function builds an error message into \p ErrMsg using the \p prefix
 /// string and the Unix error number given by \p errnum. If errnum is -1, the
 /// default then the value of errno is used.