libc: make all builds LLVM_ENABLE_RUNTIMES

No longer will any CI builds use LLVM_ENABLE_PROJECTS, which is deprecated as
of llvm/llvm-project#117265.

libc-x86_64-debian-dbg-runtimes-build can be offlined as a result of this
change.

Buildbots will probably need their CMakeCache.txt reset after this.

Author: nickdesaulniers

Diff for: zorg/buildbot/builders/annotated/libc-linux.py

@@ -12,9 +12,6 @@
 def is_fullbuild_builder(builder_name):
     return ('fullbuild' in builder_name.split('-'))
 
-def is_runtimes_builder(builder_name):
-    return ('runtimes' in builder_name.split('-'))
-
 def is_gcc_builder(builder_name):
     return ('gcc' in builder_name.split('-'))
 
@@ -41,7 +38,6 @@ def main(argv):
     source_dir = os.path.join('..', 'llvm-project')
     builder_name = os.environ.get('BUILDBOT_BUILDERNAME')
     fullbuild = is_fullbuild_builder(builder_name)
-    runtimes_build = is_runtimes_builder(builder_name)
     gcc_build = is_gcc_builder(builder_name)
     lint_build = is_lint_builder(builder_name)
     riscv_build = is_riscv_builder(builder_name)
@@ -72,11 +68,10 @@ def main(argv):
         if lint_build:
             cmake_args.append('-DLLVM_LIBC_CLANG_TIDY=%s' % clang_tidy)
 
-        if runtimes_build:
-          projects = ['llvm', 'clang']
-          cmake_args.append('-DLLVM_ENABLE_RUNTIMES=libc')
-        else:
-          projects = ['llvm', 'libc']
+        # TODO: remove once old hdrgen is deleted.
+        # https://github.com/llvm/llvm-project/pull/117220
+        projects = ['llvm', 'clang']
+        cmake_args.append('-DLLVM_ENABLE_RUNTIMES=libc')
 
         if args.debug:
             cmake_args.append('-DCMAKE_BUILD_TYPE=Debug')
@@ -127,12 +122,8 @@ def main(argv):
        with step('build libc-startup'):
           run_command(['ninja', 'libc-startup'])
 
-    if runtimes_build:
-        with step('check-libc'):
-            run_command(['ninja', 'check-libc'])
-    else:
-        with step('libc-unit-tests'):
-            run_command(['ninja', 'libc-unit-tests'])
+    with step('check-libc'):
+        run_command(['ninja', 'check-libc'])
 
     if fullbuild and not args.asan:
         with step('libc-api-test'):
@@ -148,7 +139,7 @@ def main(argv):
         with step('Benchmark Utils Tests'):
             run_command(['ninja', 'libc-benchmark-util-tests'])
 
-    if not (fullbuild or runtimes_build) and x86_64_build:
+    if not fullbuild and x86_64_build:
         with step('libc-fuzzer'):
             run_command(['ninja', 'libc-fuzzer'])