Remove USE_CUSTOM_LIBCXX

Author: justsmth

CMakeLists.txt

@@ -248,10 +248,6 @@ endif()
 
 set(GENERATE_CODE_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/generated-src")
 
-if(USE_CUSTOM_LIBCXX)
-  set(BORINGSSL_ALLOW_CXX_RUNTIME 1)
-endif()
-
 if(BORINGSSL_ALLOW_CXX_RUNTIME)
   add_definitions(-DBORINGSSL_ALLOW_CXX_RUNTIME)
 endif()
@@ -952,9 +948,6 @@ if(BUILD_TESTING)
   # Add minimal googletest targets. The provided one has many side-effects, and
   # googletest has a very straightforward build.
   add_library(boringssl_gtest third_party/googletest/src/gtest-all.cc)
-  if(USE_CUSTOM_LIBCXX)
-    target_link_libraries(boringssl_gtest libcxx)
-  endif()
   if(BUILD_SHARED_LIBS)
     # This is needed for the Windows build to correctly annotate GTest's API with __declspec(dllexport)
     target_compile_options(boringssl_gtest PRIVATE -DGTEST_CREATE_SHARED_LIBRARY=1)

crypto/CMakeLists.txt

@@ -726,17 +726,6 @@ if(NOT CMAKE_SYSTEM_NAME MATCHES "^(Generic|Android)$")
   target_link_libraries(crypto PUBLIC Threads::Threads)
 endif()
 
-# Every target depends on crypto, so we add libcxx as a dependency here to
-# simplify injecting it everywhere.
-if(USE_CUSTOM_LIBCXX)
-  install(TARGETS libcxx libcxxabi
-          EXPORT crypto-targets
-          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-  )
-  target_link_libraries(crypto PUBLIC libcxx)
-endif()
-
 if(BUILD_TESTING)
   add_subdirectory(test)
 

tests/ci/run_posix_sanitizers.sh

@@ -34,17 +34,17 @@ unset UBSAN_OPTIONS
 if [ $(uname -p) == "aarch64" ]; then
   # ARM MSAN runs get stuck on PoolTest.Threads for over an hour https://github.com/aws/aws-lc/issues/13
   echo "Building AWS-LC in ${build_type} mode with memory sanitizer."
-  run_build -DMSAN=1 -DUSE_CUSTOM_LIBCXX=1 "${cflags[@]}"
+  run_build -DMSAN=1 "${cflags[@]}"
 else
   echo "Testing AWS-LC in ${build_type} mode with memory sanitizer."
-  build_and_test -DMSAN=1 -DUSE_CUSTOM_LIBCXX=1 "${cflags[@]}"
+  build_and_test -DMSAN=1 "${cflags[@]}"
 fi
 
 if [ $(uname -p) == "x86_64" ]; then
   # x86 TSAN runs get stuck on PoolTest.Threads for over an hour https://github.com/aws/aws-lc/issues/13
   echo "Building AWS-LC in ${build_type} mode with thread sanitizer."
-  run_build -DTSAN=1 -DUSE_CUSTOM_LIBCXX=1 "${cflags[@]}"
+  run_build -DTSAN=1 "${cflags[@]}"
 else
   echo "Testing AWS-LC in ${build_type} mode with thread sanitizer."
-  build_and_test -DTSAN=1 -DUSE_CUSTOM_LIBCXX=1 "${cflags[@]}"
-fi
+  build_and_test -DTSAN=1 "${cflags[@]}"
+fi