From 390cc60ac8fcadeed080e028752e39eeab315767 Mon Sep 17 00:00:00 2001
From: Vikram Rajkumar <vikram@bitshares.org>
Date: Wed, 19 Nov 2014 11:40:49 -0500
Subject: [PATCH] Upgrade Mac and Linux LevelDB 1.12 -> 1.18-bitcoin

---
 .gitignore                        |  1 +
 CMakeLists.txt                    | 67 +++++++++++++++++++++----------
 CMakeModules/FindBerkeleyDB.cmake |  0
 CMakeModules/FindGperftools.cmake | 51 +++++++++++++++++++++++
 4 files changed, 98 insertions(+), 21 deletions(-)
 mode change 100755 => 100644 CMakeModules/FindBerkeleyDB.cmake
 create mode 100644 CMakeModules/FindGperftools.cmake

diff --git a/.gitignore b/.gitignore
index ee02e4a1e..f37020f05 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,7 @@ docs/latex
 CMakeCache.txt
 CMakeFiles
 Makefile
+!CMakeModules/*
 
 compile_commands.json
 .ycm_extra_conf.py*
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c81234fba..bad939591 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -96,27 +96,48 @@ if( WIN32 )
 
     SET(TCL_LIBS "${TCL_LIBS}${TCL_LIB_PATH}/${TCL_LIB_NAME}g${TCL_LIB_EXT}")
     SET(TCL_LIBRARY ${TCL_LIBS})
-else( WIN32 )
-    # Apple AND Linux Options Here
-    find_package( ZLIB REQUIRED )
-
-    #set( LEVEL_DB_DIR "${CMAKE_SOURCE_DIR}/libraries/leveldb" )
-    #include( ExternalProject )
-    #ExternalProject_Add( LevelDB
-    #PREFIX "${LEVEL_DB_DIR}"
-    #SOURCE_DIR "${LEVEL_DB_DIR}"
-    #BUILD_IN_SOURCE 1
-    #CONFIGURE_COMMAND ""
-    #BUILD_COMMAND "$(MAKE)"
-    #INSTALL_COMMAND ""
-    #)
-    #include_directories( "${LEVEL_DB_DIR}" "${LEVEL_DB_DIR}/include" )
-    #add_library( leveldb STATIC IMPORTED )
-    #add_dependencies( leveldb LevelDB )
-    #set_property(TARGET leveldb PROPERTY IMPORTED_LOCATION "${LEVEL_DB_DIR}/libleveldb.a" )
-
-    set( LEVEL_DB_DIR vendor/leveldb-1.12.0 )
-    add_subdirectory( "${LEVEL_DB_DIR}"    )
+
+else( WIN32 ) # Apple AND Linux
+
+    set( LEVEL_DB_DIR "${CMAKE_SOURCE_DIR}/libraries/leveldb" )
+
+    file( GLOB LEVEL_DB_SOURCES
+          "${LEVEL_DB_DIR}/db/*.cc"
+          "${LEVEL_DB_DIR}/port/port_posix.cc"
+          "${LEVEL_DB_DIR}/helpers/memenv/memenv.cc"
+          "${LEVEL_DB_DIR}/table/*.cc"
+          "${LEVEL_DB_DIR}/util/*.cc"
+          )
+    foreach( filename ${LEVEL_DB_SOURCES} )
+        if( ${filename} MATCHES ".*_test.cc" OR ${filename} MATCHES ".*_bench.cc" OR ${filename} MATCHES ".*_main.cc" )
+            list( REMOVE_ITEM LEVEL_DB_SOURCES ${filename} )
+        endif()
+    endforeach()
+
+    add_library( leveldb ${LEVEL_DB_SOURCES} )
+    target_include_directories( leveldb PUBLIC "${LEVEL_DB_DIR}" "${LEVEL_DB_DIR}/include" )
+
+    find_package( Gperftools QUIET )
+    if( GPERFTOOLS_FOUND )
+        message( STATUS "Found gperftools; compiling LevelDB with TCMalloc")
+    else()
+        message( STATUS "Could not find gperftools; compiling LevelDB without TCMalloc")
+    endif()
+
+    add_definitions( -DLEVELDB_PLATFORM_POSIX -DLEVELDB_ATOMIC_PRESENT )
+    if( APPLE )
+        add_definitions( -DOS_MACOSX )
+        if( GPERFTOOLS_FOUND )
+            target_link_libraries( leveldb tcmalloc )
+        endif()
+    else() # Linux
+        add_definitions( -DOS_LINUX -DCYGWIN )
+        if( GPERFTOOLS_FOUND )
+            target_link_libraries( leveldb pthread tcmalloc )
+        else()
+            target_link_libraries( leveldb pthread )
+        endif()
+    endif()
 
     find_library(READLINE_LIBRARIES NAMES readline)
     find_path(READLINE_INCLUDE_DIR readline/readline.h)
@@ -140,6 +161,10 @@ else( WIN32 )
         endif ( FULL_STATIC_BUILD )
     endif( APPLE )
 
+    if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU" )
+        set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-builtin-memcmp" )
+    endif()
+
     if( "${CMAKE_GENERATOR}" STREQUAL "Ninja" )
         if( "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" )
             set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics" )
diff --git a/CMakeModules/FindBerkeleyDB.cmake b/CMakeModules/FindBerkeleyDB.cmake
old mode 100755
new mode 100644
diff --git a/CMakeModules/FindGperftools.cmake b/CMakeModules/FindGperftools.cmake
new file mode 100644
index 000000000..cd990662c
--- /dev/null
+++ b/CMakeModules/FindGperftools.cmake
@@ -0,0 +1,51 @@
+# Tries to find Gperftools.
+#
+# Usage of this module as follows:
+#
+#     find_package(Gperftools)
+#
+# Variables used by this module, they can change the default behaviour and need
+# to be set before calling find_package:
+#
+#  Gperftools_ROOT_DIR  Set this variable to the root installation of
+#                       Gperftools if the module has problems finding
+#                       the proper installation path.
+#
+# Variables defined by this module:
+#
+#  GPERFTOOLS_FOUND              System has Gperftools libs/headers
+#  GPERFTOOLS_LIBRARIES          The Gperftools libraries (tcmalloc & profiler)
+#  GPERFTOOLS_INCLUDE_DIR        The location of Gperftools headers
+
+find_library(GPERFTOOLS_TCMALLOC
+  NAMES tcmalloc
+  HINTS ${Gperftools_ROOT_DIR}/lib)
+
+find_library(GPERFTOOLS_PROFILER
+  NAMES profiler
+  HINTS ${Gperftools_ROOT_DIR}/lib)
+
+find_library(GPERFTOOLS_TCMALLOC_AND_PROFILER
+  NAMES tcmalloc_and_profiler
+  HINTS ${Gperftools_ROOT_DIR}/lib)
+
+find_path(GPERFTOOLS_INCLUDE_DIR
+  NAMES gperftools/heap-profiler.h
+  HINTS ${Gperftools_ROOT_DIR}/include)
+
+set(GPERFTOOLS_LIBRARIES ${GPERFTOOLS_TCMALLOC_AND_PROFILER})
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(
+  Gperftools
+  DEFAULT_MSG
+  GPERFTOOLS_LIBRARIES
+  GPERFTOOLS_INCLUDE_DIR)
+
+mark_as_advanced(
+  Gperftools_ROOT_DIR
+  GPERFTOOLS_TCMALLOC
+  GPERFTOOLS_PROFILER
+  GPERFTOOLS_TCMALLOC_AND_PROFILER
+  GPERFTOOLS_LIBRARIES
+  GPERFTOOLS_INCLUDE_DIR)