Bump minimum CMake version.

CMake 3.2.1 was released in March 2015, which was over five years ago.

Change-Id: I8b76e1de3dba8732a143f86a3956c83fbb4306a7
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/41444
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: David Benjamin <davidben@google.com>
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 75bf998..0867601 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.0)
+cmake_minimum_required(VERSION 3.3)
 
 # Defer enabling C and CXX languages.
 project(BoringSSL NONE)
@@ -602,11 +602,6 @@
   add_subdirectory(fuzz)
 endif()
 
-if(NOT ${CMAKE_VERSION} VERSION_LESS "3.2")
-  # USES_TERMINAL is only available in CMake 3.2 or later.
-  set(MAYBE_USES_TERMINAL USES_TERMINAL)
-endif()
-
 if(UNIX AND NOT APPLE AND NOT ANDROID)
   set(HANDSHAKER_ARGS "-handshaker-path" $<TARGET_FILE:handshaker>)
 endif()
@@ -620,4 +615,4 @@
               ${HANDSHAKER_ARGS} ${RUNNER_ARGS}
     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
     DEPENDS all_tests bssl_shim handshaker
-    ${MAYBE_USES_TERMINAL})
+    USES_TERMINAL)