================
@@ -293,6 +255,19 @@ if (NOT(CLANG_DEFAULT_CXX_STDLIB STREQUAL "" OR
"Default C++ stdlib to use (\"libstdc++\" or \"libc++\", empty for
platform default" FORCE)
endif()
+set(CLANG_DEFAULT_C_STDLIB "" CACHE STRING
+ "Default C stdlib to use (\"newlib\", \"newlib-nano\", \"picolibc\",
\"llvm-libc\", or \"system\", empty for platform default)")
+if (NOT(CLANG_DEFAULT_C_STDLIB STREQUAL "" OR
+ CLANG_DEFAULT_C_STDLIB STREQUAL "newlib" OR
+ CLANG_DEFAULT_C_STDLIB STREQUAL "newlib-nano" OR
+ CLANG_DEFAULT_C_STDLIB STREQUAL "picolibc" OR
+ CLANG_DEFAULT_C_STDLIB STREQUAL "llvm-libc" OR
+ CLANG_DEFAULT_C_STDLIB STREQUAL "system"))
+ message(WARNING "Resetting default C stdlib to use platform default")
+ set(CLANG_DEFAULT_C_STDLIB "" CACHE STRING
+ "Default C stdlib to use (\"newlib\", \"newlib-nano\", \"picolibc\",
\"llvm-libc\", or \"system\", empty for platform default)" FORCE)
+endif()
----------------
lenary wrote:
https://github.com/llvm/llvm-project/pull/188857 is an attempt at (2), which
shows that we don't need it for the existing libraries - this should be able to
be extended for `--cstdlib` too.
https://github.com/llvm/llvm-project/pull/185870
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