Remove use_pthread option from getBuildFlags in the test environment

Removing the option to require the usage of pthread based on an argument
of the getBuildFlags method in lldbtest.py because it can be specified
by a variable in the makefile for the given test case. Using the
variable in the makefile works in all supported platforms.

Differential revision: http://reviews.llvm.org/D7861

llvm-svn: 230493

lldb/test/functionalities/thread/create_after_attach/Makefile

@@ -1,4 +1,5 @@
 LEVEL = ../../../make
 
+ENABLE_THREADS := YES
 C_SOURCES := main.c
 include $(LEVEL)/Makefile.rules

lldb/test/functionalities/thread/exit_during_step/Makefile

@@ -1,4 +1,5 @@
 LEVEL = ../../../make
 
+ENABLE_THREADS := YES
 CXX_SOURCES := main.cpp
 include $(LEVEL)/Makefile.rules

lldb/test/functionalities/thread/jump/Makefile

@@ -1,4 +1,5 @@
 LEVEL = ../../../make
 
+ENABLE_THREADS := YES
 CXX_SOURCES := main.cpp other.cpp
 include $(LEVEL)/Makefile.rules

lldb/test/functionalities/thread/thread_exit/Makefile

@@ -1,4 +1,5 @@
 LEVEL = ../../../make
 
+ENABLE_THREADS := YES
 CXX_SOURCES := main.cpp
 include $(LEVEL)/Makefile.rules

lldb/test/lldbtest.py

@@ -1525,11 +1525,12 @@ class Base(unittest2.TestCase):
         
         return os.environ["CC"]
 
-    def getBuildFlags(self, use_cpp11=True, use_libcxx=False, use_libstdcxx=False, use_pthreads=True):
+    def getBuildFlags(self, use_cpp11=True, use_libcxx=False, use_libstdcxx=False):
         """ Returns a dictionary (which can be provided to build* functions above) which
             contains OS-specific build flags.
         """
         cflags = ""
+        ldflags = ""
 
         # On Mac OS X, unless specifically requested to use libstdc++, use libc++
         if not use_libstdcxx and sys.platform.startswith('darwin'):
@@ -1554,9 +1555,6 @@ class Base(unittest2.TestCase):
         elif "clang" in self.getCompiler():
             cflags += " -stdlib=libstdc++"
 
-        if use_pthreads:
-            ldflags = "-lpthread"
-
         return {'CFLAGS_EXTRAS' : cflags,
                 'LD_EXTRAS' : ldflags,
                }