Index: External/Nurbs/CMakeLists.txt
===================================================================
--- External/Nurbs/CMakeLists.txt
+++ External/Nurbs/CMakeLists.txt
@@ -4,7 +4,6 @@
   llvm_externals_find(TEST_SUITE_NURBS_ROOT "nurbs" "Nurbs")
 
   if(TEST_SUITE_NURBS_ROOT)
-    list(APPEND LDFLAGS -lstdc++)
     if(CMAKE_SIZEOF_VOID_P EQUAL 8)
       list(APPEND CPPFLAGS -DDWORD_IS_ULL)
     endif()
Index: MultiSource/Applications/ALAC/decode/CMakeLists.txt
===================================================================
--- MultiSource/Applications/ALAC/decode/CMakeLists.txt
+++ MultiSource/Applications/ALAC/decode/CMakeLists.txt
@@ -5,7 +5,6 @@
   list(APPEND CFLAGS -DTARGET_RT_BIG_ENDIAN=1)
   list(APPEND CXXFLAGS -DTARGET_RT_BIG_ENDIAN=1)
 endif()
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS - - < tune.caf)
 llvm_multisource(alacconvert-decode
   EndianPortable.c
Index: MultiSource/Applications/ALAC/encode/CMakeLists.txt
===================================================================
--- MultiSource/Applications/ALAC/encode/CMakeLists.txt
+++ MultiSource/Applications/ALAC/encode/CMakeLists.txt
@@ -5,7 +5,6 @@
   list(APPEND CFLAGS -DTARGET_RT_BIG_ENDIAN=1)
   list(APPEND CXXFLAGS -DTARGET_RT_BIG_ENDIAN=1)
 endif()
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS - - < tune.wav)
 llvm_multisource(alacconvert-encode
   EndianPortable.c
Index: MultiSource/Applications/Burg/CMakeLists.txt
===================================================================
--- MultiSource/Applications/Burg/CMakeLists.txt
+++ MultiSource/Applications/Burg/CMakeLists.txt
@@ -1,6 +1,5 @@
 list(APPEND CPPFLAGS -DDEBUG)
 list(APPEND CFLAGS -std=gnu89)
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS < sample.gr)
 
 include_directories(${CMAKE_CURRENT_BINARY_DIR})
Index: MultiSource/Applications/hbd/CMakeLists.txt
===================================================================
--- MultiSource/Applications/hbd/CMakeLists.txt
+++ MultiSource/Applications/hbd/CMakeLists.txt
@@ -1,5 +1,4 @@
 list(APPEND CPPFLAGS -DHAVE_CONFIG_H)
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS Sort.class)
 llvm_multisource(hbd)
 llvm_test_data(hbd Sort.class)
Index: MultiSource/Applications/hexxagon/CMakeLists.txt
===================================================================
--- MultiSource/Applications/hexxagon/CMakeLists.txt
+++ MultiSource/Applications/hexxagon/CMakeLists.txt
@@ -1,4 +1,3 @@
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS < input)
 llvm_multisource(hexxagon)
 target_include_directories(hexxagon PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
Index: MultiSource/Applications/kimwitu++/CMakeLists.txt
===================================================================
--- MultiSource/Applications/kimwitu++/CMakeLists.txt
+++ MultiSource/Applications/kimwitu++/CMakeLists.txt
@@ -1,5 +1,4 @@
 list(APPEND CPPFLAGS -I${CMAKE_CURRENT_SOURCE_DIR} -DYYDEBUG=1)
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS -f test  -o -v -s kcc inputs/f3.k inputs/f2.k inputs/f1.k)
 set(HASH_PROGRAM_OUTPUT 1)
 llvm_multisource(kc)
Index: MultiSource/Applications/lambda-0.1.3/CMakeLists.txt
===================================================================
--- MultiSource/Applications/lambda-0.1.3/CMakeLists.txt
+++ MultiSource/Applications/lambda-0.1.3/CMakeLists.txt
@@ -1,4 +1,3 @@
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS < input)
 llvm_multisource(lambda)
 target_include_directories(lambda PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
Index: MultiSource/Applications/minisat/CMakeLists.txt
===================================================================
--- MultiSource/Applications/minisat/CMakeLists.txt
+++ MultiSource/Applications/minisat/CMakeLists.txt
@@ -1,4 +1,4 @@
-list(APPEND LDFLAGS -lstdc++ -lm)
+list(APPEND LDFLAGS -lm)
 if(SMALL_PROBLEM_SIZE)
   set(INPUT small.cnf)
 else()
Index: MultiSource/Benchmarks/7zip/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/7zip/CMakeLists.txt
+++ MultiSource/Benchmarks/7zip/CMakeLists.txt
@@ -1,7 +1,7 @@
 set(RUN_OPTIONS b)
 list(APPEND CFLAGS -DBREAK_HANDLER -DUNICODE -D_UNICODE -I${CMAKE_CURRENT_SOURCE_DIR}/C -I${CMAKE_CURRENT_SOURCE_DIR}/CPP/myWindows -I${CMAKE_CURRENT_SOURCE_DIR}/CPP/include_windows -I${CMAKE_CURRENT_SOURCE_DIR}/CPP -I. -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DNDEBUG -D_REENTRANT -DENV_UNIX -D_7ZIP_LARGE_PAGES -pthread)
 list(APPEND CXXFLAGS -Wno-error=c++11-narrowing -DBREAK_HANDLER -DUNICODE -D_UNICODE -I${CMAKE_CURRENT_SOURCE_DIR}/C -I${CMAKE_CURRENT_SOURCE_DIR}/CPP/myWindows -I${CMAKE_CURRENT_SOURCE_DIR}/CPP/include_windows -I${CMAKE_CURRENT_SOURCE_DIR}/CPP -I. -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -DNDEBUG -D_REENTRANT -DENV_UNIX -D_7ZIP_LARGE_PAGES -pthread)
-list(APPEND LDFLAGS -lstdc++ -pthread)
+list(APPEND LDFLAGS -pthread)
 set(NO_REFERENCE_OUTPUT 1)
 llvm_multisource(7zip-benchmark
   CPP/myWindows/myGetTickCount.cpp
Index: MultiSource/Benchmarks/Bullet/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Bullet/CMakeLists.txt
+++ MultiSource/Benchmarks/Bullet/CMakeLists.txt
@@ -1,3 +1,3 @@
 list(APPEND CPPFLAGS -I${CMAKE_CURRENT_SOURCE_DIR}/include -std=gnu++98 -DNO_TIME)
-list(APPEND LDFLAGS -lstdc++ -lm)
+list(APPEND LDFLAGS -lm)
 llvm_multisource(bullet)
Index: MultiSource/Benchmarks/PAQ8p/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/PAQ8p/CMakeLists.txt
+++ MultiSource/Benchmarks/PAQ8p/CMakeLists.txt
@@ -1,5 +1,5 @@
 list(APPEND CPPFLAGS -DNOASM -DLLVM)
-list(APPEND LDFLAGS -lstdc++ -lm)
+list(APPEND LDFLAGS -lm)
 if(SMALL_PROBLEM_SIZE)
   set(INPUTS small.in)
   set(RUN_OPTIONS -1 ${INPUTS})
Index: MultiSource/Benchmarks/Prolangs-C++/NP/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/NP/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/NP/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(np)
Index: MultiSource/Benchmarks/Prolangs-C++/city/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/city/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/city/CMakeLists.txt
@@ -1,3 +1,2 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(city)
 target_include_directories(city PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
Index: MultiSource/Benchmarks/Prolangs-C++/deriv1/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/deriv1/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/deriv1/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(deriv1)
Index: MultiSource/Benchmarks/Prolangs-C++/deriv2/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/deriv2/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/deriv2/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(deriv2)
Index: MultiSource/Benchmarks/Prolangs-C++/employ/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/employ/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/employ/CMakeLists.txt
@@ -1,4 +1,3 @@
-list(APPEND LDFLAGS -lstdc++)
 set(RUN_OPTIONS 400 < input.txt)
 set(HASH_PROGRAM_OUTPUT 1)
 llvm_multisource(employ)
Index: MultiSource/Benchmarks/Prolangs-C++/family/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/family/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/family/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(family)
Index: MultiSource/Benchmarks/Prolangs-C++/fsm/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/fsm/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/fsm/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(fsm)
Index: MultiSource/Benchmarks/Prolangs-C++/garage/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/garage/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/garage/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(garage)
Index: MultiSource/Benchmarks/Prolangs-C++/life/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/life/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/life/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(life)
Index: MultiSource/Benchmarks/Prolangs-C++/objects/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/objects/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/objects/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(objects)
Index: MultiSource/Benchmarks/Prolangs-C++/ocean/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/ocean/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/ocean/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(ocean)
Index: MultiSource/Benchmarks/Prolangs-C++/office/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/office/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/office/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(office)
Index: MultiSource/Benchmarks/Prolangs-C++/primes/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/primes/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/primes/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(primes)
Index: MultiSource/Benchmarks/Prolangs-C++/shapes/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/shapes/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/shapes/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(shapes)
Index: MultiSource/Benchmarks/Prolangs-C++/simul/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/simul/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/simul/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(simul)
Index: MultiSource/Benchmarks/Prolangs-C++/trees/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/trees/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/trees/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(trees)
Index: MultiSource/Benchmarks/Prolangs-C++/vcirc/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/Prolangs-C++/vcirc/CMakeLists.txt
+++ MultiSource/Benchmarks/Prolangs-C++/vcirc/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_multisource(vcirc)
Index: MultiSource/Benchmarks/tramp3d-v4/CMakeLists.txt
===================================================================
--- MultiSource/Benchmarks/tramp3d-v4/CMakeLists.txt
+++ MultiSource/Benchmarks/tramp3d-v4/CMakeLists.txt
@@ -1,5 +1,4 @@
 list(APPEND CXXFLAGS -fno-exceptions)
-list(APPEND LDFLAGS -lstdc++)
 if(SMALL_PROBLEM_SIZE)
   set(RUN_OPTIONS --cartvis 1.0 0.0 --rhomin 1e-8 -n 4 --domain 32 32 32)
 else()
Index: SingleSource/Benchmarks/Adobe-C++/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/Adobe-C++/CMakeLists.txt
+++ SingleSource/Benchmarks/Adobe-C++/CMakeLists.txt
@@ -1,3 +1,3 @@
-list(APPEND LDFLAGS -lm -lstdc++)
+list(APPEND LDFLAGS -lm)
 set(FP_ABSTOLERANCE 0.01)
 llvm_singlesource()
Index: SingleSource/Benchmarks/CoyoteBench/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/CoyoteBench/CMakeLists.txt
+++ SingleSource/Benchmarks/CoyoteBench/CMakeLists.txt
@@ -1,2 +1,2 @@
-list(APPEND LDFLAGS -lm -lstdc++)
+list(APPEND LDFLAGS -lm)
 llvm_singlesource()
Index: SingleSource/Benchmarks/Misc-C++-EH/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/Misc-C++-EH/CMakeLists.txt
+++ SingleSource/Benchmarks/Misc-C++-EH/CMakeLists.txt
@@ -1,3 +1,3 @@
 list(APPEND CXXFLAGS -pthread)
-list(APPEND LDFLAGS -lm -lstdc++ -pthread)
+list(APPEND LDFLAGS -lm -pthread)
 llvm_singlesource()
Index: SingleSource/Benchmarks/Misc-C++/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/Misc-C++/CMakeLists.txt
+++ SingleSource/Benchmarks/Misc-C++/CMakeLists.txt
@@ -1,5 +1,5 @@
 add_subdirectory(Large)
 
-list(APPEND LDFLAGS -lm -lstdc++)
+list(APPEND LDFLAGS -lm)
 set(FP_ABSTOLERANCE 0.01)
 llvm_singlesource()
Index: SingleSource/Benchmarks/Misc-C++/Large/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/Misc-C++/Large/CMakeLists.txt
+++ SingleSource/Benchmarks/Misc-C++/Large/CMakeLists.txt
@@ -1,4 +1,4 @@
-list(APPEND LDFLAGS -lm -lstdc++)
+list(APPEND LDFLAGS -lm)
 set(FP_ABSTOLERANCE 0.01)
 set(HASH_PROGRAM_OUTPUT 1)
 llvm_singlesource()
Index: SingleSource/Benchmarks/Shootout-C++/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/Shootout-C++/CMakeLists.txt
+++ SingleSource/Benchmarks/Shootout-C++/CMakeLists.txt
@@ -32,7 +32,7 @@
     wordfreq.cpp
   )
 endif()
-list(APPEND LDFLAGS -lstdc++ -lm)
+list(APPEND LDFLAGS -lm)
 if(TARGET_OS STREQUAL "Darwin")
   # Necessary for ackermann on iOS
   list(APPEND LDFLAGS -Xlinker -stack_size -Xlinker 0x800000)
Index: SingleSource/Benchmarks/Shootout-C++/EH/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/Shootout-C++/EH/CMakeLists.txt
+++ SingleSource/Benchmarks/Shootout-C++/EH/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource(PREFIX "Shootout-C++-")
Index: SingleSource/Benchmarks/SmallPT/CMakeLists.txt
===================================================================
--- SingleSource/Benchmarks/SmallPT/CMakeLists.txt
+++ SingleSource/Benchmarks/SmallPT/CMakeLists.txt
@@ -1,4 +1,4 @@
 list(APPEND CXXFLAGS -std=gnu++98)
-list(APPEND LDFLAGS -lm -lstdc++)
+list(APPEND LDFLAGS -lm)
 set(FP_TOLERANCE 0.001)
 llvm_singlesource()
Index: SingleSource/Regression/C++/CMakeLists.txt
===================================================================
--- SingleSource/Regression/C++/CMakeLists.txt
+++ SingleSource/Regression/C++/CMakeLists.txt
@@ -1,4 +1,3 @@
 add_subdirectory(EH)
 
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource(PREFIX "Regression-C++-")
Index: SingleSource/Regression/C++/EH/CMakeLists.txt
===================================================================
--- SingleSource/Regression/C++/EH/CMakeLists.txt
+++ SingleSource/Regression/C++/EH/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource(PREFIX "Regression-C++-")
Index: SingleSource/UnitTests/C++11/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/C++11/CMakeLists.txt
+++ SingleSource/UnitTests/C++11/CMakeLists.txt
@@ -1,5 +1,5 @@
 list(APPEND CXXFLAGS -std=c++11 -pthread)
-list(APPEND LDFLAGS -lstdc++ -pthread)
+list(APPEND LDFLAGS -pthread)
 
 file(GLOB Source RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} *.c *.cpp)
 if(${CMAKE_EXE_LINKER_FLAGS} MATCHES "-static")
Index: SingleSource/UnitTests/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/CMakeLists.txt
+++ SingleSource/UnitTests/CMakeLists.txt
@@ -36,7 +36,6 @@
   list(REMOVE_ITEM Source AtomicOps.c)
   list(REMOVE_ITEM Source initp1.cpp)
 endif()
-list(APPEND LDFLAGS -lstdc++)
 if(NOT ARCH STREQUAL "x86")
   list(REMOVE_ITEM Source
     ms_struct-bitfield.c
Index: SingleSource/UnitTests/EH/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/EH/CMakeLists.txt
+++ SingleSource/UnitTests/EH/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource()
Index: SingleSource/UnitTests/Integer/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/Integer/CMakeLists.txt
+++ SingleSource/UnitTests/Integer/CMakeLists.txt
@@ -1,3 +1,2 @@
 set(RUN_OPTIONS 31415926)
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource()
Index: SingleSource/UnitTests/ObjC++/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/ObjC++/CMakeLists.txt
+++ SingleSource/UnitTests/ObjC++/CMakeLists.txt
@@ -1,3 +1,3 @@
-list(APPEND LDFLAGS -lstdc++ -lobjc -framework Foundation)
+list(APPEND LDFLAGS -lobjc -framework Foundation)
 file(GLOB Source *.mm)
 llvm_singlesource()
Index: SingleSource/UnitTests/SetjmpLongjmp/C++/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/SetjmpLongjmp/C++/CMakeLists.txt
+++ SingleSource/UnitTests/SetjmpLongjmp/C++/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource()
Index: SingleSource/UnitTests/SignlessTypes/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/SignlessTypes/CMakeLists.txt
+++ SingleSource/UnitTests/SignlessTypes/CMakeLists.txt
@@ -1,5 +1,4 @@
 add_subdirectory(Large)
 
 set(RUN_OPTIONS 31415926)
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource()
Index: SingleSource/UnitTests/SignlessTypes/Large/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/SignlessTypes/Large/CMakeLists.txt
+++ SingleSource/UnitTests/SignlessTypes/Large/CMakeLists.txt
@@ -1,4 +1,3 @@
 set(RUN_OPTIONS 31415926)
-list(APPEND LDFLAGS -lstdc++)
 set(HASH_PROGRAM_OUTPUT 1)
 llvm_singlesource()
Index: SingleSource/UnitTests/Vectorizer/CMakeLists.txt
===================================================================
--- SingleSource/UnitTests/Vectorizer/CMakeLists.txt
+++ SingleSource/UnitTests/Vectorizer/CMakeLists.txt
@@ -1,2 +1 @@
-list(APPEND LDFLAGS -lstdc++)
 llvm_singlesource()