diff --git a/libc/CMakeLists.txt b/libc/CMakeLists.txt
--- a/libc/CMakeLists.txt
+++ b/libc/CMakeLists.txt
@@ -14,8 +14,6 @@
 # Path libc/scripts directory.
 set(LIBC_BUILD_SCRIPTS_DIR "${LIBC_SOURCE_DIR}/utils/build_scripts")
 
-set(LIBC_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX} CACHE PATH "Define libc destination prefix.")
-
 set(LIBC_TARGET_OS ${CMAKE_SYSTEM_NAME})
 string(TOLOWER ${LIBC_TARGET_OS} LIBC_TARGET_OS)
 
diff --git a/libc/lib/CMakeLists.txt b/libc/lib/CMakeLists.txt
--- a/libc/lib/CMakeLists.txt
+++ b/libc/lib/CMakeLists.txt
@@ -12,7 +12,7 @@
 
 install(
   TARGETS llvmlibc
-  ARCHIVE DESTINATION ${LIBC_INSTALL_PREFIX}/${LIBC_INSTALL_LIBRARY_DIR}
+  ARCHIVE DESTINATION "${LIBC_INSTALL_LIBRARY_DIR}"
   COMPONENT llvmlibc
 )