[analyzer] Allow cmake options to be passed to satest container

This patch selects all cmake options and passes them to global cmake
command while building LLVM inside satest docker container.

Prior to this, the cmake command was hard-coded and this would consume
a huge amount of memory while building. There was no support to pass
extra cmake options for the build, except for changing the command
manually. This patch allows testers to pass all "-D*" cmake options to
the build.

Reviewed By: vsavchenko

Differential Revision: https://reviews.llvm.org/D105447

Patch by: @manas (Manas Gupta)

clang/utils/analyzer/entrypoint.py

@@ -9,10 +9,11 @@ from typing import List, Tuple
 
 def main():
     settings, rest = parse_arguments()
+    cmake_opts = ['-D' + cmd for cmd in settings.D]
     if settings.wait:
         wait()
     if settings.build_llvm or settings.build_llvm_only:
-        build_llvm()
+        build_llvm(cmake_opts)
     if settings.build_llvm_only:
         return
     sys.exit(test(rest))
@@ -30,14 +31,15 @@ def parse_arguments() -> Tuple[argparse.Namespace, List[str]]:
     parser.add_argument('--wait', action='store_true')
     parser.add_argument('--build-llvm', action='store_true')
     parser.add_argument('--build-llvm-only', action='store_true')
+    parser.add_argument('-D', action='append', default=[])
     return parser.parse_known_args()
 
 
-def build_llvm():
+def build_llvm(cmake_options):
     os.chdir('/build')
     try:
         if is_cmake_needed():
-            cmake()
+            cmake(cmake_options)
         ninja()
     except CalledProcessError:
         print("Build failed!")
@@ -55,8 +57,9 @@ CMAKE_COMMAND = "cmake -G Ninja -DCMAKE_BUILD_TYPE=Release " \
     "-DCLANG_ENABLE_STATIC_ANALYZER=ON"
 
 
-def cmake():
-    check_call(CMAKE_COMMAND + ' /llvm-project/llvm', shell=True)
+def cmake(cmake_options):
+    check_call(CMAKE_COMMAND + ' '.join(cmake_options) + ' /llvm-project/llvm',
+            shell=True)
 
 
 def ninja():