Remove WinPTY support

NewAndNoteworthy/CDT-12.3.md

@@ -10,6 +10,12 @@ This is the New & Noteworthy page for CDT 12.3 which is part of Eclipse 2025-12
 
 Core Build CMake and Makefile projects now support the Gdb Remote TCP and Serial launch targets.
 
+## Support for WinPTY terminals has been removed
+
+Since CDT 10.6 the default settings in CDT has [been to not use WinPTY](https://github.com/eclipse-cdt/cdt/blob/main/NewAndNoteworthy/CDT-10.6.md#windows-pseudo-console-conpty-the-default).
+With this release of CDT the WinPTY version of the code has been removed.
+The WinPTY code was known to not work in many circumstances.
+The replacement Windows Pseudo Console (ConPTY) API is much more stable.
 
 # API Changes, current and planned
 

core/org.eclipse.cdt.core.native/native_src/Makefile

@@ -38,7 +38,6 @@ ifeq ($(UNAME),Linux)
 LIBS = \
 	$(OS_DIR_WIN32_X86_64)/starter.exe \
 	$(OS_DIR_WIN32_X86_64)/spawner.dll \
-	$(OS_DIR_WIN32_X86_64)/pty.dll \
 	$(OS_DIR_LINUX_X86_64)/libspawner.so \
 	$(OS_DIR_LINUX_X86_64)/libpty.so \
 	$(OS_DIR_LINUX_AARCH64)/libspawner.so \
@@ -68,8 +67,7 @@ LIBS = \
 else
 LIBS = \
 	$(OS_DIR_WIN32_X86_64)/starter.exe \
-	$(OS_DIR_WIN32_X86_64)/spawner.dll \
-	$(OS_DIR_WIN32_X86_64)/pty.dll
+	$(OS_DIR_WIN32_X86_64)/spawner.dll
 endif
 endif
 endif
@@ -87,7 +85,6 @@ MAC_TO_SIGN=$(OS_DIR_MACOS_X86_64)/libspawner.jnilib \
 	$(OS_DIR_MACOS_AARCH64)/libpty.jnilib
 WIN_TO_SIGN=$(OS_DIR_WIN32_X86_64)/starter.exe \
 	$(OS_DIR_WIN32_X86_64)/spawner.dll \
-	$(OS_DIR_WIN32_X86_64)/pty.dll \
 	$(OS_DIR_WIN32_AARCH64)/starter.exe \
 	$(OS_DIR_WIN32_AARCH64)/spawner.dll
 ### This block of code also exists in native/org.eclipse.cdt.native.serial/native_src/Makefile
@@ -130,14 +127,6 @@ $(OS_DIR_WIN32_X86_64)/spawner.dll: win/iostream.c win/raise.c win/spawner.c win
 		$^ \
 		-Wl,--kill-at --shared
 
-$(OS_DIR_WIN32_X86_64)/pty.dll: win/pty.cpp win/pty_dllmain.cpp  win/util.c
-	mkdir -p $(dir $@) && \
-	$(REPRODUCIBLE_BUILD_WRAPPER) \
-	x86_64-w64-mingw32-g++ $(COMMON_CCFLAGS) -o $@ -Iinclude -Iwin/include -I"$(JAVA_HOME)/include" -I"$(JAVA_HOME)/include/win32" \
-		-DUNICODE \
-		$^ \
-		-Wl,--kill-at --shared -L$(OS_DIR_WIN32_X86_64) -lwinpty -static-libstdc++ -static-libgcc
-
 # Windows aarch64
 $(OS_DIR_WIN32_AARCH64)/starter.exe: win/starter.c win/util.c
 	mkdir -p $(dir $@) && \