creduce make fail with llvm9.0.0 which complaint error: use of undeclared identifier 'Language'

[sendaoYan]

replay command:

llvm=/home/yansendao/software/llvm/clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-14.04
./configure --with-llvm=$llvm --prefix=/home/yansendao/tone/run/csmith/creduce-binary CC=$llvm/bin/clang CXX=$llvm/bin/clang++ LDFLAGS="-L$HOME/software/llvm/lib"
make -j &> make.log

When change llvm binary from llvm9.0.0 to llvm16.0.0, then creduce make success.

log:

home/yansendao/software/llvm/clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-14.04/bin/clang++ -DHAVE_CONFIG_H -I. -I..   -I"/home/yansendao/software/llvm/clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-14.04/include/clang"  -I/home/yansendao/software/llvm/clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-14.04/include -std=c++11 -stdlib=libc++ -fno-exceptions -fno-rtti -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -fno-rtti -fno-exceptions -g -O3 -fno-strict-aliasing -Wall -Wextra -Wno-long-long -Wno-unused-parameter -Wno-missing-field-initializers -MT clang_delta-git_version.o -MD -MP -MF .deps/clang_delta-git_version.Tpo -c -o clang_delta-git_version.o `test -f 'git_version.cpp' || echo './'`git_version.cpp
mv -f .deps/clang_delta-git_version.Tpo .deps/clang_delta-git_version.Po
mv -f .deps/clang_delta-ClangDelta.Tpo .deps/clang_delta-ClangDelta.Po
TransformationManager.cpp:107:27: error: use of undeclared identifier 'Language'; did you mean 'LanguageID'?
  if (IK.getLanguage() == Language::C) {
                          ^~~~~~~~
                          LanguageID
/home/yansendao/software/llvm/clang+llvm-9.0.0-x86_64-linux-gnu-ubuntu-14.04/include/clang/Basic/Builtins.h:32:6: note: 'LanguageID' declared here
enum LanguageID {
     ^
TransformationManager.cpp:107:37: error: no member named 'C' in 'clang::LanguageID'
  if (IK.getLanguage() == Language::C) {
                          ~~~~~~~~~~^
TransformationManager.cpp:108:34: error: no member named 'setLangDefaults' in 'clang::LangOptions'
    ClangInstance->getLangOpts().setLangDefaults(ClangInstance->getLangOpts(), Language::C, T, PPOpts.Includes);
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ^
TransformationManager.cpp:108:80: error: use of undeclared identifier 'Language'; did you mean 'LanguageID'?
    ClangInstance->getLangOpts().setLangDefaults(ClangInstance->getLangOpts(), Language::C, T, PPOpts.Includes);
                                                                               ^~~~~~~~
                                                                               LanguageID

make.log

[eeide]

The head of the master branch works with LLVM 16.0. My apologies that the documentation on the master branch is currently out of date w.r.t. this requirement.

The out-of-date documentation in the topic of #257, so I am going to close this issue.