From cfaec73e0a5ad9d05d62f1f5c393ab1c59ba771b Mon Sep 17 00:00:00 2001
From: Aurelien Jarno <aurelien@aurel32.net>
Date: Tue, 13 May 2025 23:40:40 +0200
Subject: [PATCH] C++ wrapper: get rid of the Boost dependency

The C++ wrapper relies on boost::shared_ptr, likely due to the lack of a
standard smart pointer at the time of the C++ wrapper implementation.
However, std::shared_ptr has been available by default in GCC since
version 6.1, and even with GCC 4.7 when explicitly using the -std=c++11
option.

This commit replaces all usages of boost::shared_ptr with
std::shared_ptr, eliminating the dependency on the Boost library. Since
the smart pointer is only used in private member variables and both
types have the same size, this change does not affect the ABI.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 CMakeLists.txt          |    2 +-
 README.build            |    2 +-
 examples/CMakeLists.txt |    3 +--
 ftdipp/CMakeLists.txt   |    4 +---
 ftdipp/ftdi.hpp         |    8 ++++----
 5 files changed, 8 insertions(+), 11 deletions(-)

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,7 +29,7 @@
 include_directories ( ${LIBUSB_INCLUDE_DIR} )
 
 # Find Boost
-if (FTDIPP OR BUILD_TESTS)
+if (BUILD_TESTS)
   find_package( Boost REQUIRED )
 endif()
 
--- a/README.build
+++ b/README.build
@@ -14,7 +14,7 @@
 
 sudo apt-get install libconfuse-dev (for ftdi-eeprom) (yum install libconfuse-devel)
 sudo apt-get install swig python-dev (for python bindings) (yum install swig python-devel)
-sudo apt-get install libboost-all-dev (for C++ binding and unit test) (yum install boost-devel)
+sudo apt-get install libboost-all-dev (for unit test) (yum install boost-devel)
 
 3) Clone the git repository
 mkdir libftdi
--- a/examples/CMakeLists.txt
+++ b/examples/CMakeLists.txt
@@ -33,8 +33,7 @@
 
 # libftdi++ examples
 if( FTDIPP )
-	include_directories(BEFORE ${CMAKE_SOURCE_DIR}/ftdipp
-			${Boost_INCLUDE_DIRS})
+	include_directories(BEFORE ${CMAKE_SOURCE_DIR}/ftdipp)
 
 	# Target
 	add_executable(find_all_pp find_all_pp.cpp)
--- a/ftdipp/CMakeLists.txt
+++ b/ftdipp/CMakeLists.txt
@@ -9,8 +9,6 @@
 	${CMAKE_CURRENT_SOURCE_DIR}
 	${CMAKE_SOURCE_DIR}/src)
 
-include_directories(${Boost_INCLUDE_DIRS})
-
 # Shared library
 add_library(ftdipp1 SHARED ${cpp_sources})
 
@@ -21,7 +19,7 @@
 set_target_properties(ftdipp1 PROPERTIES CLEAN_DIRECT_OUTPUT 1)
 
 # Dependencies
-target_link_libraries(ftdipp1 ftdi1 ${LIBUSB_LIBRARIES} ${BOOST_LIBRARIES})
+target_link_libraries(ftdipp1 ftdi1 ${LIBUSB_LIBRARIES})
 
 install ( TARGETS ftdipp1
 					RUNTIME DESTINATION bin
--- a/ftdipp/ftdi.hpp
+++ b/ftdipp/ftdi.hpp
@@ -31,7 +31,7 @@
 
 #include <list>
 #include <string>
-#include <boost/shared_ptr.hpp>
+#include <memory>
 #include <ftdi.h>
 
 namespace Ftdi
@@ -145,7 +145,7 @@
 
 private:
     class Private;
-    boost::shared_ptr<Private> d;
+    std::shared_ptr<Private> d;
 };
 
 /*! \brief Device EEPROM.
@@ -168,7 +168,7 @@
 
 private:
     class Private;
-    boost::shared_ptr<Private> d;
+    std::shared_ptr<Private> d;
 };
 
 /*! \brief Device list.
@@ -214,7 +214,7 @@
 
 private:
     class Private;
-    boost::shared_ptr<Private> d;
+    std::shared_ptr<Private> d;
 };
 
 }