Merge pull request #66881 from Michael137/bugfix/build-script-configure-lldb-tests-to-5.9

[cherry-pick][release/5.9] [Build] Introduce --lldb-configure-tests option

Author: JDevlieghere

utils/build-presets.ini

@@ -1398,6 +1398,10 @@ mixin-preset=
 skip-test-lldb
 skip-test-playgroundsupport
 
+# Don't configure LLDB tests either since that
+# would require us to build libcxx (rdar://109774179)
+lldb-configure-tests=0
+
 [preset: buildbot_osx_package,use_os_runtime]
 mixin-preset=
     buildbot_osx_package

utils/build-script-impl

@@ -174,6 +174,7 @@ KNOWN_SETTINGS=(
     lldb-test-swift-compatibility                 ""                "specify additional Swift compilers to test lldb with"
     lldb-test-swift-only                          "0"               "when running lldb tests, only include Swift-specific tests"
     lldb-use-system-debugserver                   ""                "don't try to codesign debugserver, and use the system's debugserver instead"
+    lldb-configure-tests                          "1"               "if set, will make sure we configure LLDB's test target without running the tests"
 
     ## LLVM Options
     llvm-enable-lto                               ""                "Must be set to one of 'thin' or 'full'"
@@ -2187,7 +2188,7 @@ for host in "${ALL_HOSTS[@]}"; do
                     DOTEST_ARGS="${DOTEST_ARGS};-E;${DOTEST_EXTRA}"
                 fi
 
-                if [[ "${SKIP_TEST_LLDB}" ]]; then
+                if [[ $(true_false "${LLDB_CONFIGURE_TESTS}") == "FALSE" ]]; then
                     should_configure_tests="FALSE"
                 else
                     should_configure_tests=$(false_true ${BUILD_TOOLCHAIN_ONLY})