chore(3p/glog): Unvendor glog r/3784

... and build //third_party/nix with the one from nixpkgs.

Change-Id: Iae7f1772a31286f2c22955cdc1fe61ee82d112aa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3016
Tested-by: BuildkiteCI
Autosubmit: tazjin <tazjin@tvl.su>
Reviewed-by: grfn <grfn@gws.fyi>

6 files changed, 0 insertions, 336 deletions

diff --git a/third_party/glog/cmake/DetermineGflagsNamespace.cmake b/third_party/glog/cmake/DetermineGflagsNamespace.cmake
deleted file mode 100644
index 3dde42b4b332..000000000000
--- a/third_party/glog/cmake/DetermineGflagsNamespace.cmake
+++ /dev/null
@@ -1,69 +0,0 @@
-macro(determine_gflags_namespace VARIABLE)
-  if (NOT DEFINED "${VARIABLE}")
-    if (CMAKE_REQUIRED_INCLUDES)
-      set (CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS "-DINCLUDE_DIRECTORIES=${CMAKE_REQUIRED_INCLUDES}")
-    else ()
-      set (CHECK_INCLUDE_FILE_CXX_INCLUDE_DIRS)
-    endif ()
-
-    set(MACRO_CHECK_INCLUDE_FILE_FLAGS ${CMAKE_REQUIRED_FLAGS})
-
-    set(_NAMESPACES gflags google)
-    set(_check_code
-"
-#include <gflags/gflags.h>
-
-int main(int argc, char**argv)
-{
-  GLOG_GFLAGS_NAMESPACE::ParseCommandLineFlags(&argc, &argv, true);
-}
-")
-    if (NOT CMAKE_REQUIRED_QUIET)
-      message (STATUS "Looking for gflags namespace")
-    endif ()
-    if (${ARGC} EQUAL 3)
-      set (CMAKE_CXX_FLAGS_SAVE ${CMAKE_CXX_FLAGS})
-      set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ARGV2}")
-    endif ()
-
-    set (_check_file
-        ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/DetermineGflagsNamespace.cxx)
-
-    foreach (_namespace ${_NAMESPACES})
-      file (WRITE "${_check_file}" "${_check_code}")
-      try_compile (${VARIABLE}
-        "${CMAKE_BINARY_DIR}" "${_check_file}"
-        COMPILE_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS}" -DGLOG_GFLAGS_NAMESPACE=${_namespace}
-        LINK_LIBRARIES gflags
-        CMAKE_FLAGS -DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
-        OUTPUT_VARIABLE OUTPUT)
-
-      if (${VARIABLE})
-        set (${VARIABLE} ${_namespace} CACHE INTERNAL "gflags namespace" FORCE)
-        break ()
-      else ()
-        file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
-          "Determining the gflags namespace ${_namespace} failed with the following output:\n"
-          "${OUTPUT}\n\n")
-      endif ()
-    endforeach (_namespace)
-
-    if (${ARGC} EQUAL 3)
-      set (CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS_SAVE})
-    endif ()
-
-    if (${VARIABLE})
-      if (NOT CMAKE_REQUIRED_QUIET)
-        message (STATUS "Looking for gflags namespace - ${${VARIABLE}}")
-      endif ()
-      file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
-        "Determining the gflags namespace passed with the following output:\n"
-        "${OUTPUT}\n\n")
-    else ()
-      if (NOT CMAKE_REQUIRED_QUIET)
-        message (STATUS "Looking for gflags namespace - failed")
-      endif ()
-      set (${VARIABLE} ${_namespace} CACHE INTERNAL "gflags namespace")
-    endif ()
-  endif ()
-endmacro ()
diff --git a/third_party/glog/cmake/FindUnwind.cmake b/third_party/glog/cmake/FindUnwind.cmake
deleted file mode 100644
index 8941bb0dacca..000000000000
--- a/third_party/glog/cmake/FindUnwind.cmake
+++ /dev/null
@@ -1,78 +0,0 @@
-# - Try to find libunwind
-# Once done this will define
-#
-#  Unwind_FOUND - system has libunwind
-#  unwind::unwind - cmake target for libunwind
-
-include (FindPackageHandleStandardArgs)
-
-find_path (Unwind_INCLUDE_DIR NAMES unwind.h libunwind.h DOC "unwind include directory")
-find_library (Unwind_LIBRARY NAMES unwind DOC "unwind library")
-
-if (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
-    set (Unwind_ARCH "arm")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
-    set (Unwind_ARCH "aarch64")
-elseif (CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR
-        CMAKE_SYSTEM_PROCESSOR STREQUAL "amd64" OR
-        CMAKE_SYSTEM_PROCESSOR STREQUAL "corei7-64")
-    set (Unwind_ARCH "x86_64")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^i.86$")
-    set (Unwind_ARCH "x86")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc64")
-    set (Unwind_ARCH "ppc64")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^ppc")
-    set (Unwind_ARCH "ppc32")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
-    set (Unwind_ARCH "mips")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^hppa")
-    set (Unwind_ARCH "hppa")
-elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "^ia64")
-    set (Unwind_ARCH "ia64")
-endif (CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
-
-find_library (Unwind_PLATFORM_LIBRARY NAMES "unwind-${Unwind_ARCH}"
-  DOC "unwind library platform")
-
-mark_as_advanced (Unwind_INCLUDE_DIR Unwind_LIBRARY Unwind_PLATFORM_LIBRARY)
-
-# Extract version information
-if (Unwind_LIBRARY)
-  set (_Unwind_VERSION_HEADER ${Unwind_INCLUDE_DIR}/libunwind-common.h)
-
-  if (EXISTS ${_Unwind_VERSION_HEADER})
-    FILE (READ ${_Unwind_VERSION_HEADER} _Unwind_VERSION_CONTENTS)
-
-    string (REGEX REPLACE ".*#define UNW_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1"
-      Unwind_VERSION_MAJOR "${_Unwind_VERSION_CONTENTS}")
-    string (REGEX REPLACE ".*#define UNW_VERSION_MINOR[ \t]+([0-9]+).*" "\\1"
-      Unwind_VERSION_MINOR "${_Unwind_VERSION_CONTENTS}")
-    string (REGEX REPLACE ".*#define UNW_VERSION_EXTRA[ \t]+([0-9]+).*" "\\1"
-      Unwind_VERSION_PATCH "${_Unwind_VERSION_CONTENTS}")
-
-    set (Unwind_VERSION
-      ${Unwind_VERSION_MAJOR}.${Unwind_VERSION_MINOR}.${Unwind_VERSION_PATCH})
-    set (Unwind_VERSION_COMPONENTS 3)
-  endif (EXISTS ${_Unwind_VERSION_HEADER})
-endif (Unwind_LIBRARY)
-
-# handle the QUIETLY and REQUIRED arguments and set Unwind_FOUND to TRUE
-# if all listed variables are TRUE
-find_package_handle_standard_args (Unwind REQUIRED_VARS Unwind_INCLUDE_DIR
-  Unwind_LIBRARY Unwind_PLATFORM_LIBRARY VERSION_VAR Unwind_VERSION)
-
-if (Unwind_FOUND)
-  if (NOT TARGET unwind::unwind)
-    add_library (unwind::unwind INTERFACE IMPORTED)
-
-    set_property (TARGET unwind::unwind PROPERTY
-      INTERFACE_INCLUDE_DIRECTORIES ${Unwind_INCLUDE_DIR}
-    )
-    set_property (TARGET unwind::unwind PROPERTY
-      INTERFACE_LINK_LIBRARIES ${Unwind_LIBRARY} ${Unwind_PLATFORM_LIBRARY}
-    )
-    set_property (TARGET unwind::unwind PROPERTY
-      IMPORTED_CONFIGURATIONS RELEASE
-    )
-  endif (NOT TARGET unwind::unwind)
-endif (Unwind_FOUND)
diff --git a/third_party/glog/cmake/GetCacheVariables.cmake b/third_party/glog/cmake/GetCacheVariables.cmake
deleted file mode 100644
index 20485a8c8f8f..000000000000
--- a/third_party/glog/cmake/GetCacheVariables.cmake
+++ /dev/null
@@ -1,63 +0,0 @@
-cmake_policy (PUSH)
-cmake_policy (VERSION 3.3)
-
-include (CMakeParseArguments)
-
-function (get_cache_variables _CACHEVARS)
-  set (_SINGLE)
-  set (_MULTI EXCLUDE)
-  set (_OPTIONS)
-
-  cmake_parse_arguments (_ARGS "${_OPTIONS}" "${_SINGLE}" "${_MULTI}" ${ARGS} ${ARGN})
-
-  get_cmake_property (_VARIABLES VARIABLES)
-
-  set (CACHEVARS)
-
-  foreach (_VAR ${_VARIABLES})
-    if (DEFINED _ARGS_EXCLUDE)
-      if ("${_VAR}" IN_LIST _ARGS_EXCLUDE)
-        continue ()
-      endif ("${_VAR}" IN_LIST _ARGS_EXCLUDE)
-    endif (DEFINED _ARGS_EXCLUDE)
-
-    get_property (_CACHEVARTYPE CACHE ${_VAR} PROPERTY TYPE)
-
-    if ("${_CACHEVARTYPE}" STREQUAL INTERNAL OR
-        "${_CACHEVARTYPE}" STREQUAL STATIC OR
-        "${_CACHEVARTYPE}" STREQUAL UNINITIALIZED)
-        continue ()
-    endif ("${_CACHEVARTYPE}" STREQUAL INTERNAL OR
-        "${_CACHEVARTYPE}" STREQUAL STATIC OR
-        "${_CACHEVARTYPE}" STREQUAL UNINITIALIZED)
-
-    get_property (_CACHEVARVAL CACHE ${_VAR} PROPERTY VALUE)
-
-    if ("${_CACHEVARVAL}" STREQUAL "")
-      continue ()
-    endif ("${_CACHEVARVAL}" STREQUAL "")
-
-    get_property (_CACHEVARDOC CACHE ${_VAR} PROPERTY HELPSTRING)
-
-    # Escape " in values
-    string (REPLACE "\"" "\\\"" _CACHEVARVAL "${_CACHEVARVAL}")
-    # Escape " in help strings
-    string (REPLACE "\"" "\\\"" _CACHEVARDOC "${_CACHEVARDOC}")
-    # Escape ; in values
-    string (REPLACE ";" "\\\;" _CACHEVARVAL "${_CACHEVARVAL}")
-    # Escape backslash in values
-    string (REGEX REPLACE "\\\\([^\"])" "\\\\\\1" _CACHEVARVAL "${_CACHEVARVAL}")
-
-    if (NOT "${_CACHEVARTYPE}" STREQUAL BOOL)
-      set (_CACHEVARVAL "\"${_CACHEVARVAL}\"")
-    endif (NOT "${_CACHEVARTYPE}" STREQUAL BOOL)
-
-    if (NOT "${_CACHEVARTYPE}" STREQUAL "" AND NOT "${_CACHEVARVAL}" STREQUAL "")
-      set (CACHEVARS "${CACHEVARS}set (${_VAR} ${_CACHEVARVAL} CACHE ${_CACHEVARTYPE} \"${_CACHEVARDOC}\")\n")
-    endif (NOT "${_CACHEVARTYPE}" STREQUAL "" AND NOT "${_CACHEVARVAL}" STREQUAL "")
-  endforeach (_VAR)
-
-  set (${_CACHEVARS} ${CACHEVARS} PARENT_SCOPE)
-endfunction (get_cache_variables)
-
-cmake_policy (POP)
diff --git a/third_party/glog/cmake/INSTALL.md b/third_party/glog/cmake/INSTALL.md
deleted file mode 100644
index 1377d652ed09..000000000000
--- a/third_party/glog/cmake/INSTALL.md
+++ /dev/null
@@ -1,81 +0,0 @@
-# Glog - CMake Support
-
-Glog comes with a CMake build script ([CMakeLists.txt](../CMakeLists.txt)) that can be used on a wide range of platforms.  
-If you don't have CMake installed already, you can download it for free from <http://www.cmake.org/>.
-
-CMake works by generating native makefiles or build projects that can be used in the compiler environment of your choice.  
-You can either build Glog with CMake as a standalone project or it can be incorporated into an existing CMake build for another project.
-
-## Table of Contents
-
-- [Building Glog with CMake](#building-glog-with-cmake)
-- [Consuming Glog in a CMake Project](#consuming-glog-in-a-cmake-project)
-- [Incorporating Glog into a CMake Project](#incorporating-glog-into-a-cmake-project)
-
-## Building Glog with CMake
-
-When building Glog as a standalone project, on Unix-like systems with GNU Make as build tool, the typical workflow is:  
-
-1. Get the source code and change to it.
-e.g. cloning with git:
-```bash
-git clone git@github.com:google/glog.git
-cd glog
-```
-
-2. Run CMake to configure the build tree.
-```bash
-cmake -H. -Bbuild -G "Unix Makefiles"
-```
-note: To get the list of available generators (e.g. Visual Studio), use `-G ""`
-
-3. Afterwards, generated files can be used to compile the project.
-```bash
-cmake --build build
-```
-
-4. Test the build software (optional).
-```bash
-cmake --build build --target test
-```
-
-5. Install the built files (optional).
-```bash
-cmake --build build --target install
-```
-
-## Consuming Glog in a CMake Project
-
-If you have Glog installed in your system, you can use the CMake command
-`find_package()` to include it in your CMake Project.
-
-```cmake
-cmake_minimum_required(VERSION 3.0.2)
-project(myproj VERSION 1.0)
-
-find_package(glog 0.4.0 REQUIRED)
-
-add_executable(myapp main.cpp)
-target_link_libraries(myapp glog::glog)
-```
-
-Compile definitions and options will be added automatically to your target as
-needed.
-
-## Incorporating Glog into a CMake Project
-
-You can also use the CMake command `add_subdirectory()` to include Glog directly from a subdirectory of your project.  
-The **glog::glog** target is in this case an ALIAS library target for the **glog** library target. 
-
-```cmake
-cmake_minimum_required(VERSION 3.0.2)
-project(myproj VERSION 1.0)
-
-add_subdirectory(glog)
-
-add_executable(myapp main.cpp)
-target_link_libraries(myapp glog::glog)
-```
-
-Again, compile definitions and options will be added automatically to your target as
-needed.
diff --git a/third_party/glog/cmake/TestInitPackageConfig.cmake b/third_party/glog/cmake/TestInitPackageConfig.cmake
deleted file mode 100644
index 6cb11ccf2977..000000000000
--- a/third_party/glog/cmake/TestInitPackageConfig.cmake
+++ /dev/null
@@ -1,12 +0,0 @@
-# Create the build directory
-execute_process (
-  COMMAND ${CMAKE_COMMAND} -E make_directory ${TEST_BINARY_DIR}
-  RESULT_VARIABLE _DIRECTORY_CREATED_SUCCEEDED
-)
-
-if (NOT _DIRECTORY_CREATED_SUCCEEDED EQUAL 0)
-  message (FATAL_ERROR "Failed to create build directory")
-endif (NOT _DIRECTORY_CREATED_SUCCEEDED EQUAL 0)
-
-file (WRITE ${INITIAL_CACHE} "${CACHEVARS}")
-
diff --git a/third_party/glog/cmake/TestPackageConfig.cmake b/third_party/glog/cmake/TestPackageConfig.cmake
deleted file mode 100644
index 191c3cac2351..000000000000
--- a/third_party/glog/cmake/TestPackageConfig.cmake
+++ /dev/null
@@ -1,33 +0,0 @@
-# Create the build directory
-execute_process (
-  COMMAND ${CMAKE_COMMAND} -E make_directory ${TEST_BINARY_DIR}
-  RESULT_VARIABLE _DIRECTORY_CREATED_SUCCEEDED
-)
-
-if (NOT _DIRECTORY_CREATED_SUCCEEDED EQUAL 0)
-  message (FATAL_ERROR "Failed to create build directory")
-endif (NOT _DIRECTORY_CREATED_SUCCEEDED EQUAL 0)
-
-# Capture the PATH environment variable content set during project
-# generation stage. This is required because later during the build stage
-# the PATH is modified again (e.g., for MinGW AppVeyor CI builds) by adding
-# back the directory containing git.exe. Incidently, the Git installation
-# directory also contains sh.exe which causes MinGW Makefile generation to
-# fail.
-set (ENV{PATH} ${PATH})
-
-# Run CMake
-execute_process (
-  COMMAND ${CMAKE_COMMAND} -C ${INITIAL_CACHE}
-    -G ${GENERATOR}
-    -DCMAKE_PREFIX_PATH=${PACKAGE_DIR}
-    -DCMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY=ON
-    -DCMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY=ON
-    ${SOURCE_DIR}
-  WORKING_DIRECTORY ${TEST_BINARY_DIR}
-  RESULT_VARIABLE _GENERATE_SUCCEEDED
-)
-
-if (NOT _GENERATE_SUCCEEDED EQUAL 0)
-  message (FATAL_ERROR "Failed to generate project files using CMake")
-endif (NOT _GENERATE_SUCCEEDED EQUAL 0)