Merge pull request #1363 from AntelopeIO/no_eager_tcmalloc

no longer eagerly use tcmalloc if it's found

CMakeLists.txt

@@ -174,9 +174,10 @@ endif()
 
 message( STATUS "Using '${EOSIO_ROOT_KEY}' as public key for 'eosio' account" )
 
-find_package( Gperftools QUIET )
-if( GPERFTOOLS_FOUND )
-    message( STATUS "Found gperftools; compiling Leap with TCMalloc")
+option(ENABLE_TCMALLOC "use tcmalloc (requires gperftools)" OFF)
+if( ENABLE_TCMALLOC )
+    find_package( Gperftools REQUIRED )
+    message( STATUS "Compiling Leap with TCMalloc")
     #if doing this by the book, simply link_libraries( ${GPERFTOOLS_TCMALLOC} ) here. That will
     #give the performance benefits of tcmalloc but since it won't be linked last
     #the heap profiler & checker may not be accurate. This here is rather undocumented behavior

CMakeModules/EosioTester.cmake.in

@@ -14,12 +14,6 @@ if (LLVM_DIR STREQUAL "" OR NOT LLVM_DIR)
    set(LLVM_DIR @LLVM_DIR@)
 endif()
 
-find_package( Gperftools QUIET )
-if( GPERFTOOLS_FOUND )
-    message( STATUS "Found gperftools; compiling tests with TCMalloc")
-    list( APPEND PLATFORM_SPECIFIC_LIBS tcmalloc )
-endif()
-
 if(NOT "@LLVM_FOUND@" STREQUAL "")
    find_package(LLVM @LLVM_VERSION@ EXACT REQUIRED CONFIG)
    llvm_map_components_to_libnames(LLVM_LIBS support core passes mcjit native DebugInfoDWARF orcjit)

CMakeModules/EosioTesterBuild.cmake.in

@@ -12,12 +12,6 @@ if (LLVM_DIR STREQUAL "" OR NOT LLVM_DIR)
    set(LLVM_DIR @LLVM_DIR@)
 endif()
 
-find_package( Gperftools QUIET )
-if( GPERFTOOLS_FOUND )
-    message( STATUS "Found gperftools; compiling tests with TCMalloc")
-    list( APPEND PLATFORM_SPECIFIC_LIBS tcmalloc )
-endif()
-
 if(NOT "@LLVM_FOUND@" STREQUAL "")
    find_package(LLVM @LLVM_VERSION@ EXACT REQUIRED CONFIG)
    llvm_map_components_to_libnames(LLVM_LIBS support core passes mcjit native DebugInfoDWARF orcjit)