[libcxx] r290727 - Fix build using the buildit script

[Eric Fiselier via cfe-commits]

Author: ericwf
Date: Thu Dec 29 16:42:45 2016
New Revision: 290727

URL: http://llvm.org/viewvc/llvm-project?rev=290727&view=rev
Log:
Fix build using the buildit script

Modified:
    libcxx/trunk/lib/buildit

Modified: libcxx/trunk/lib/buildit
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/lib/buildit?rev=290727&r1=290726&r2=290727&view=diff
==============================================================================
--- libcxx/trunk/lib/buildit (original)
+++ libcxx/trunk/lib/buildit Thu Dec 29 16:42:45 2016
@@ -41,7 +41,7 @@ then
 fi
 
 EXTRA_FLAGS="-nostdinc++ -std=${CXX_LANG} -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion \
-             -Wstrict-aliasing=2 -Wstrict-overflow=4 "
+             -Wstrict-aliasing=2 -Wstrict-overflow=4 -D_LIBCPP_BUILDING_LIBRARY "
 
 case $TRIPLE in
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