build: Remove support for cross-building from Cygwin and SunOS.

These have been broken for a long time. Some Cygwin changes that
are relevant on MinGW are kept here, but users on Windows who
want to build Haiku should probably use WSL at this point.

However, now that we are using relative paths and don't need
to worry about drive path kludges, it's actually possible to
get some host tools built on MinGW. Changes for that coming.

build/jam/BuildSetup

@@ -242,23 +242,17 @@ HOST_UNARFLAGS		?= x ;
 
 # check the host platform compatibility
 SetPlatformCompatibilityFlagVariables HOST_PLATFORM : HOST : host
-	: linux openbsd freebsd darwin sunos cygwin ;
+	: linux openbsd freebsd darwin ;
 HOST_PLATFORM_(host)_COMPATIBLE = 1 ;
 
 if $(HOST_PLATFORM) = linux || $(HOST_PLATFORM) = freebsd
-	|| $(HOST_PLATFORM) = darwin || $(HOST_PLATFORM) = cygwin
+	|| $(HOST_PLATFORM) = darwin || $(HOST_PLATFORM) = openbsd {
-	|| $(HOST_PLATFORM) = sunos || $(HOST_PLATFORM) = openbsd {
 	# don't use lex: otherwise rc will not work correctly
 	if $(LEX) = lex {
 		LEX = flex ;
 	}
 }
 
-if $(HOST_PLATFORM) = cygwin {
-	HOST_LINKFLAGS += -Xlinker --allow-multiple-definition -Xlinker
-		--enable-auto-import ;
-}
-
 HOST_CPU ?= $(OSPLAT:L) ;
 
 # Jam doesn't know x86_64, so override HOST_CPU, if 64 bit.
@@ -304,10 +298,8 @@ HOST_ASFLAGS = ;
 HOST_CCFLAGS += -Wno-multichar ;
 HOST_C++FLAGS += -Wno-multichar ;
 
-if $(HOST_PLATFORM) != cygwin {
+HOST_PIC_CCFLAGS += -fPIC ;
-	HOST_PIC_CCFLAGS += -fPIC ;
+HOST_PIC_C++FLAGS += -fPIC ;
-	HOST_PIC_C++FLAGS += -fPIC ;
-}
 
 if $(HOST_GCC_VERSION[1]) >= 3 {
 	HOST_GCC_BASE_FLAGS += -fno-strict-aliasing -fno-delete-null-pointer-checks ;
@@ -433,7 +425,7 @@ if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
 } else {
 	HOST_LINKFLAGS += -lm -ldl ;
 	HOST_LIBSTDC++ = stdc++ ;
-	if $(HOST_PLATFORM) = cygwin {
+	if $(HOST_PLATFORM) = mingw {
 		HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
 			= "export PATH=$PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
 	} else if $(HOST_PLATFORM) = darwin {
@@ -444,14 +436,7 @@ if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
 			= "export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
 	}
 
-	if $(HOST_PLATFORM) = cygwin {
+	HOST_PTHREAD_LINKFLAGS = -pthread ;
-		# not needed
-		HOST_PTHREAD_LINKFLAGS = ;
-	} else if $(HOST_PLATFORM) = freebsd {
-		HOST_PTHREAD_LINKFLAGS = -pthread ;
-	} else {
-		HOST_PTHREAD_LINKFLAGS = -pthread ;
-	}
 
 	# the C++ support library
 	if $(HOST_GCC_VERSION[1]) < 3 {
@@ -685,8 +670,6 @@ switch $(HOST_PLATFORM) {
 	case linux		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_LINUX ;
 	case freebsd	: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_FREEBSD ;
 	case darwin		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_DARWIN ;
-	case cygwin		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_CYGWIN ;
-	case sunos		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_SUNOS ;
 }
 
 # define host platform 64 bit macro

build/jam/MainBuildRules

@@ -621,7 +621,7 @@ rule BuildPlatformObjects
 	Objects $(sources) ;
 }
 
-actions CygwinExtensionFix
+actions Win32ExtensionFix
 {
 	if test -f $(1).exe ; then
 		rm -f $(1)
@@ -658,14 +658,14 @@ rule BuildPlatformMain
 
 	Main $(target) : $(sources) ;
 	LinkAgainst $(target) : $(libs) ;
-	if $(HOST_PLATFORM) = cygwin {
+	if $(HOST_PLATFORM) = mingw {
-		# Cygwin gcc adds the ".exe" extension. We cannot force
+		# MinGW GCC adds the ".exe" extension. We cannot force
 		# jam to use SUFEXE as haiku target executables are not
 		# supposed to have this extension, thus finding
 		# dependencies will fail for these.
 		# The hack is to remove the extension after a successful
 		# build of the Target.
-		CygwinExtensionFix $(target) ;
+		Win32ExtensionFix $(target) ;
 	}
 }
 
@@ -685,9 +685,9 @@ rule BuildPlatformSharedLibrary
 	if $(HOST_PLATFORM) = darwin {
 		LINKFLAGS on $(target) = [ on $(target) return $(LINKFLAGS) ]
 			-dynamic -dynamiclib -Xlinker -flat_namespace ;
-	} else if $(HOST_PLATFORM) = cygwin {
+#	} else if $(HOST_PLATFORM) = cygwin {
-		LINKFLAGS on $(target) = [ on $(target) return $(LINKFLAGS) ]
+#		LINKFLAGS on $(target) = [ on $(target) return $(LINKFLAGS) ]
-			-shared -Xlinker --allow-multiple-definition ;
+#			-shared -Xlinker --allow-multiple-definition ;
 	} else {
 		LINKFLAGS on $(target) = [ on $(target) return $(LINKFLAGS) ]
 			-shared -Xlinker -soname=\"$(target:G=)\" ;

configure

@@ -782,8 +782,6 @@ case "${platform}" in
 	Haiku)	HOST_PLATFORM=haiku_host ;;
 	Linux)	HOST_PLATFORM=linux ;;
 	OpenBSD) HOST_PLATFORM=openbsd ;;
-	SunOS)	HOST_PLATFORM=sunos ;;
-	CYGWIN_NT-*) HOST_PLATFORM=cygwin ;;
 	*)		echo Unsupported platform: ${platform}
 			exit 1 ;;
 esac

headers/build/BeOSBuildCompatibility.h

@@ -1,20 +1,12 @@
 #ifndef BEOS_BUILD_COMPATIBILITY_H
 #define BEOS_BUILD_COMPATIBILITY_H
 
-#if defined(HAIKU_HOST_PLATFORM_CYGWIN)
+// DEFFILEMODE is not available on MinGW and on platforms with MUSL
-#	ifndef __addr_t_defined
-#		define __addr_t_defined
-#	endif
-#endif
-
-// DEFFILEMODE is not available on Cygwin, SunOS and when building with musl c
-#if defined(HAIKU_HOST_PLATFORM_CYGWIN) || defined(HAIKU_HOST_PLATFORM_SUNOS) \
-	|| !defined(DEFFILEMODE)
 #ifndef DEFFILEMODE
 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
 #endif
 
-// There's no ALLPERMS when building with musl c
+// There's no ALLPERMS on platforms with MUSL
 #ifndef ALLPERMS
 #	define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)
 #endif
@@ -23,16 +15,6 @@
 #define	S_IUMSK 07777
 #endif
 
-#include <ctype.h>
-#endif
-
-#ifdef HAIKU_HOST_PLATFORM_SUNOS
-#	include <limits.h>
-#	ifndef NAME_MAX
-#		define NAME_MAX	MAXNAMELEN
-#	endif
-#endif
-
 typedef unsigned long	haiku_build_addr_t;
 #define addr_t			haiku_build_addr_t
 
@@ -62,7 +44,7 @@ extern size_t	strlcat(char* dest, const char* source, size_t length);
 extern size_t	strnlen(const char* string, size_t length);
 #endif
 
-#if defined(HAIKU_HOST_PLATFORM_CYGWIN) || defined(HAIKU_HOST_PLATFORM_SUNOS)
+#if defined(HAIKU_HOST_PLATFORM_MINGW)
 extern char*	stpcpy(char* dest, const char* src);
 extern char*	strcasestr(const char* s, const char* find);
 #endif

src/build/libroot/Jamfile

@@ -40,7 +40,7 @@ if $(HOST_PLATFORM) != darwin && $(HOST_PLATFORM) != haiku_host {
 	strlSources = strlcpy.c strlcat.c ;
 }
 
-if $(HOST_PLATFORM) = cygwin || $(HOST_PLATFORM) = sunos {
+if $(HOST_PLATFORM) = mingw {
 	strlSources += stpcpy.c strcasestr.c ;
 }
 

src/tools/makebootable/platform/bios_ia32/Jamfile

@@ -27,8 +27,7 @@ if $(HOST_PLATFORM) = linux || $(HOST_PLATFORM) = freebsd || $(HOST_PLATFORM) =
 
 # Write the stage 1 boot loader into the makebootable resources. On Darwin
 # resources don't seem to work; there we use an attribute instead.
-if $(HOST_PLATFORM) != darwin && $(HOST_PLATFORM) != cygwin
+if $(HOST_PLATFORM) != darwin && $(HOST_PLATFORM) != mingw {
-	&& $(HOST_PLATFORM) != sunos {
 	AddFileDataResource <build>makebootable : RAWT:666:BootCode : stage1.bin ;
 }
 
@@ -39,7 +38,6 @@ BuildPlatformMain <build>makebootable :
 ;
 
 # on Darwin write the boot loader code into an attribute
-if $(HOST_PLATFORM) = darwin || $(HOST_PLATFORM) = cygwin
+if $(HOST_PLATFORM) = darwin || $(HOST_PLATFORM) = mingw {
-	|| $(HOST_PLATFORM) = sunos {
 	AddFileDataAttribute <build>makebootable : BootCode : raw : stage1.bin ;
 }