Ignore unknown pragmas.

In particular, we are looking to ignore the "#pragma mark" construct which GCC
warns about on platforms other than Darwin.  This cleans up diagnostic output
significantly.



git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@122974 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile b/Makefile
index 70c4801..abe694b 100644
--- a/Makefile
+++ b/Makefile
@@ -53,6 +53,10 @@
 # We can revisit this when LLVM/Clang support it.
 CXX.Flags += -fno-strict-aliasing
 
+# Do not warn about pragmas.  In particular, we are looking to ignore the
+# "#pragma mark" construct which GCC warns about on platforms other than Darwin.
+EXTRA_OPTIONS += -Wno-unknown-pragmas
+
 ###
 # LLDB Top Level specific stuff.