[libc++] Remove code to prevent overwriting the system libc++ on Darwin
The system partition is read-only since Catalina.
GitOrigin-RevId: 2dc9b26c00893696f8f56283b7ebca95f6c57ec7
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ecc8924..2870595 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -262,23 +262,6 @@
set(LIBCXX_COVERAGE_LIBRARY "" CACHE STRING
"The Profile-rt library used to build with code coverage")
-# Don't allow a user to accidentally overwrite the system libc++ installation on Darwin.
-# If the user specifies -DCMAKE_INSTALL_PREFIX=/usr the install rules for libc++
-# will not be generated and a warning will be issued.
-option(LIBCXX_OVERRIDE_DARWIN_INSTALL "Enable overwriting darwins libc++ installation." OFF)
-mark_as_advanced(LIBCXX_OVERRIDE_DARWIN_INSTALL) # Don't show this option by default.
-
-if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin" AND NOT LIBCXX_OVERRIDE_DARWIN_INSTALL)
- if ("${CMAKE_INSTALL_PREFIX}" STREQUAL "/usr")
- message(WARNING "Disabling libc++ install rules because installation would "
- "overwrite the systems installation. Configure with "
- "-DLIBCXX_OVERRIDE_DARWIN_INSTALL=ON to suppress this behaviour.")
- mark_as_advanced(CLEAR LIBCXX_OVERRIDE_DARWIN_INSTALL) # Show the override option.
- set(LIBCXX_INSTALL_HEADERS OFF)
- set(LIBCXX_INSTALL_LIBRARY OFF)
- endif()
-endif()
-
set(LIBCXX_CONFIGURE_IDE_DEFAULT OFF)
if (XCODE OR MSVC_IDE)
set(LIBCXX_CONFIGURE_IDE_DEFAULT ON)
