[libc++][libc++abi] Serialize the enable_assertions Lit parameter in the generated config

This means that re-running with llvm-lit in that configuration will
work as expected. This also enables assertions in libc++abi in the
Generic-assertions CI job, which was disabled previously.

Differential Revision: https://reviews.llvm.org/D122597

GitOrigin-RevId: 65b1b3b961cf0337a007e5646431abf2b7aff334

cmake/caches/Generic-assertions.cmake

diff --git a/cmake/caches/Generic-assertions.cmake b/cmake/caches/Generic-assertions.cmake
index 18eb866..a1d348e 100644
--- a/cmake/caches/Generic-assertions.cmake
+++ b/cmake/caches/Generic-assertions.cmake
@@ -1,3 +1,2 @@
 set(LIBCXX_ENABLE_ASSERTIONS ON CACHE BOOL "")
-set(LIBCXX_TEST_PARAMS "enable_assertions=True" CACHE STRING "")
-set(LIBCXXABI_TEST_PARAMS "enable_assertions=True" CACHE STRING "")
+set(LIBCXXABI_ENABLE_ASSERTIONS ON CACHE BOOL "")

test/CMakeLists.txt

diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 1c9445b..ebabc70 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -104,6 +104,10 @@
   serialize_lit_param(enable_debug_tests False)
 endif()
 
+if (LIBCXX_ENABLE_ASSERTIONS)
+  serialize_lit_param(enable_assertions True)
+endif()
+
 if (CMAKE_CXX_COMPILER_TARGET)
   serialize_lit_param(target_triple "\"${CMAKE_CXX_COMPILER_TARGET}\"")
 else()