Fix OSS Squangle build

Use C++20 in the provided listfile and remove outdated patches.

Author: mszabo-wikia

third-party/squangle/CMakeLists.txt

@@ -29,9 +29,6 @@ ExternalProject_Add(
     "${CMAKE_COMMAND}" -E copy
     "${CMAKE_CURRENT_SOURCE_DIR}/squangle-CMakeLists.txt"
     <SOURCE_DIR>/CMakeLists.txt
-    &&
-    "${CMAKE_CURRENT_SOURCE_DIR}/../apply-quilt-patches.sh"
-    "${CMAKE_CURRENT_SOURCE_DIR}/patches"
   CMAKE_ARGS
     "-DCMAKE_PREFIX_PATH=${CMAKE_PREFIX_PATH}"
     -DCMAKE_MODULE_PATH=${CMAKE_SOURCE_DIR}/CMake
@@ -40,6 +37,8 @@ ExternalProject_Add(
 
     -DCMAKE_C_COMPILER=${CMAKE_C_COMPILER}
     -DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}
+    -DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}
+    -DCMAKE_CXX_FLAGS=${CMAKE_CXX_FLAGS}
     -DCMAKE_OSX_SYSROOT=${CMAKE_OSX_SYSROOT}
 
     -DBoost_NO_SYSTEM_PATHS=ON

third-party/squangle/patches/0001-only-disable-SSL-mode-if-we-have-a-MySQL-client-lib-.patch

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.10)
 project(squangle CXX C)
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
 
@@ -23,4 +23,3 @@ target_link_libraries(squangle Folly::folly)
 
 install(TARGETS squangle LIBRARY ARCHIVE DESTINATION lib)
 install(DIRECTORY "${CMAKE_SOURCE_DIR}/" DESTINATION include FILES_MATCHING PATTERN "*.h")
-