Remove glog source code from third party

- glog source code is now downloaded through the download script.
- Added patches for glog.

CMakeLists.txt

@@ -587,6 +587,7 @@ if(USE_TCMALLOC)
   if (COMPILER_HAS_WNO_RETURN_TYPE_C_LINKAGE)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-return-type-c-linkage")
   endif()
+  include_directories(${CMAKE_CURRENT_BINARY_DIR}/third_party)
 endif()
 
 # Add Protocol Buffers.
@@ -649,7 +650,7 @@ if (WIN32)
   include_directories(${THIRD_PARTY_SOURCE_DIR}/glog/src/windows)
 else()
   include_directories(${THIRD_PARTY_SOURCE_DIR}/glog/src)
-  include_directories(${CMAKE_CURRENT_BINARY_DIR}/third_party)
+  include_directories(${CMAKE_CURRENT_BINARY_DIR}/third_party/glog)
 endif()
 
 include_directories("${THIRD_PARTY_SOURCE_DIR}/re2")

third_party/download_and_patch_prerequisites.sh

@@ -49,6 +49,7 @@ third_party_dir_names=("benchmark"
                        "linenoise"
                        "re2"
                        "gperftools"
+                       "glog"
                        )
 
 third_party_lib_urls=("https://github.com/google/benchmark/archive/v1.1.0.tar.gz"
@@ -57,6 +58,7 @@ third_party_lib_urls=("https://github.com/google/benchmark/archive/v1.1.0.tar.gz
                       "https://github.com/antirez/linenoise/archive/1.0.tar.gz"
                       "https://github.com/google/re2/archive/2017-01-01.tar.gz"
                       "https://github.com/gperftools/gperftools/releases/download/gperftools-2.5/gperftools-2.5.tar.gz"
+                      "https://github.com/google/glog/archive/v0.3.5.tar.gz"
                       )
 
 downloaded_archive_names=("v1.1.0.tar.gz"
@@ -65,6 +67,7 @@ downloaded_archive_names=("v1.1.0.tar.gz"
                           "1.0.tar.gz"
                           "2017-01-01.tar.gz"
                           "gperftools-2.5.tar.gz"
+                          "v0.3.5.tar.gz"
                           )
 
 tar_options=("-xzf"
@@ -73,6 +76,7 @@ tar_options=("-xzf"
              "-xzf"
              "-xzf"
              "-xzf"
+             "-xzf"
              )
 
 for ((lib_index=0; lib_index < ${#third_party_dir_names[*]}; lib_index++))
@@ -125,3 +129,7 @@ patch ${THIRD_PARTY_SRC_DIR}/re2/CMakeLists.txt ${PATCH_DIR}/re2/re2CMake.patch
 # Apply benchmark patches.
 patch ${THIRD_PARTY_SRC_DIR}/benchmark/CMakeLists.txt ${PATCH_DIR}/benchmark/benchmarkCMake.patch
 patch ${THIRD_PARTY_SRC_DIR}/benchmark/src/CMakeLists.txt ${PATCH_DIR}/benchmark/benchmarkSrcCMakeLists.patch
+
+# Apply glog patches.
+patch ${THIRD_PARTY_SRC_DIR}/glog/CMakeLists.txt ${PATCH_DIR}/glog/glogCMakeLists.txt.patch
+patch ${THIRD_PARTY_SRC_DIR}/glog/src/utilities.cc ${PATCH_DIR}/glog/utilities.cc.patch

third_party/patches/glog/glogCMakeLists.txt.patch

@@ -0,0 +1,23 @@
+--- CMakeLists.txt	2017-12-15 14:10:23.000000002 -0600
++++ CMakeLists-new.txt	2017-12-15 14:07:52.000000002 -0600
+@@ -26,7 +26,7 @@
+ set (CPACK_PACKAGE_VERSION_PATCH ${GLOG_PATCH_VERSION})
+ set (CPACK_PACKAGE_VERSION ${GLOG_VERSION})
+
+-option (WITH_GFLAGS "Use gflags" ON)
++option (WITH_GFLAGS "Use gflags" OFF)
+ option (WITH_THREADS "Enable multithreading support" ON)
+
+ list (APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
+@@ -377,6 +377,11 @@
+
+ add_compile_options ($<$<BOOL:${HAVE_NO_UNNAMED_TYPE_TEMPLATE_ARGS}>:-Wno-unnamed-type-template-args>)
+
++CHECK_CXX_COMPILER_FLAG("-Wno-sign-compare" COMPILER_HAS_WNO_SIGN_ERROR)
++if (COMPILER_HAS_WNO_SIGN_ERROR)
++  add_compile_options(-Wno-sign-compare)
++endif()
++
+ add_library (glog
+   ${GLOG_SRCS}
+ )

third_party/patches/glog/utilities.cc.patch

@@ -0,0 +1,11 @@
+--- utilities.cc	2017-12-15 14:10:40.000000002 -0600
++++ utilities.cc.new	2017-12-15 14:08:13.000000002 -0600
+@@ -300,7 +300,7 @@
+     g_my_user_name = "invalid-user";
+   }
+ }
+-REGISTER_MODULE_INITIALIZER(utilities, MyUserNameInitializer());
++REGISTER_MODULE_INITIALIZER(utilities, MyUserNameInitializer())
+
+ #ifdef HAVE_STACKTRACE
+ void DumpStackTraceToString(string* stacktrace) {

third_party/reset_third_party_dir.sh

@@ -32,6 +32,7 @@ third_party_dir_names=("benchmark"
                        "linenoise"
                        "re2"
                        "gperftools"
+                       "glog"
                        )
 
 for ((lib_index=0; lib_index < ${#third_party_dir_names[*]}; lib_index++))