configure & build: Add basic support for building with MSYS.

Also remove the MINGW support, as it was far too incomplete.

This *should* work under case-sensitive NTFS, but instead,
it seems #14963 occurs. So perhaps there is a GCC bug
related to case-sensitive vs. case-insensitivity after all.

build/jam/BuildSetup

@@ -216,7 +216,7 @@ HOST_UNARFLAGS		?= x ;
 
 # check the host platform compatibility
 SetPlatformCompatibilityFlagVariables HOST_PLATFORM : HOST : host
-	: linux openbsd freebsd darwin mingw ;
+	: linux openbsd freebsd darwin msys ;
 HOST_PLATFORM_(host)_COMPATIBLE = 1 ;
 
 if $(HOST_PLATFORM) = linux || $(HOST_PLATFORM) = freebsd
@@ -400,7 +400,7 @@ if $(HOST_PLATFORM_HAIKU_COMPATIBLE) {
 } else {
 	HOST_LINKFLAGS += -lm -ldl ;
 	HOST_LIBSTDC++ = stdc++ ;
-	if $(HOST_PLATFORM) = mingw {
+	if $(HOST_PLATFORM) = msys {
 		HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
 			= "PATH=$PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
 	} else if $(HOST_PLATFORM) = darwin {
@@ -635,7 +635,7 @@ 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 mingw		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_MINGW ;
+	case msys		: HOST_DEFINES	+= HAIKU_HOST_PLATFORM_MSYS ;
 }
 
 # define host platform 64 bit macro

build/jam/MainBuildRules

@@ -686,9 +686,6 @@ rule BuildPlatformSharedLibrary
 	if $(HOST_PLATFORM) = darwin {
 		LINKFLAGS on $(target) = [ on $(target) return $(LINKFLAGS) ]
 			-dynamic -dynamiclib -Xlinker -flat_namespace ;
-	} else if $(HOST_PLATFORM) = mingw {
-		LINKFLAGS on $(target) = [ on $(target) return $(LINKFLAGS) ]
-			-shared -Xlinker --allow-multiple-definition ;
 	} else {
 		LINKFLAGS on $(target) = [ on $(target) return $(LINKFLAGS) ]
 			-shared -Xlinker -soname=\"$(target:G=)\" ;

configure

@@ -434,7 +434,7 @@ check_native_xattrs()
 			xattr_set="setextattr"; xattr_set_args="user \$NAME \"\$VALUE\""
 			xattr_get="getextattr"; xattr_get_args="user \$NAME"
 			;;
-		linux)
+		linux|msys)
 			xattr_set="setfattr"; xattr_set_args="-n user.\$NAME -v \"\$VALUE\""
 			xattr_get="getfattr"; xattr_get_args="-n user.\$NAME"
 			;;
@@ -585,7 +585,7 @@ case "${platform}" in
 	Haiku)   HOST_PLATFORM=haiku_host ;;
 	Linux)   HOST_PLATFORM=linux ;;
 	OpenBSD) HOST_PLATFORM=openbsd ;;
-	MINGW*)  HOST_PLATFORM=mingw ;;
+	MSYS*)   HOST_PLATFORM=msys ;;
 	*)       echo Unsupported platform: ${platform}
 	         exit 1 ;;
 esac

headers/build/BeOSBuildCompatibility.h

@@ -1,22 +1,7 @@
 #ifndef BEOS_BUILD_COMPATIBILITY_H
 #define BEOS_BUILD_COMPATIBILITY_H
 
-// These things have to be done before anything is included
+// DEFFILEMODE is not available on platforms with MUSL
-#if defined(HAIKU_HOST_PLATFORM_MINGW)
-#define _MODE_T_
-#define _POSIX_
-typedef int mode_t;
-
-#include <stdint.h>
-#include <limits.h>
-typedef uint32_t uid_t;
-typedef uint32_t gid_t;
-
-#include <io.h>
-#define mkdir(path, mode) mkdir(path)
-#endif
-
-// DEFFILEMODE is not available on MinGW and on platforms with MUSL
 #ifndef DEFFILEMODE
 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
 #endif
@@ -33,6 +18,10 @@ typedef uint32_t gid_t;
 typedef unsigned long	haiku_build_addr_t;
 #define addr_t			haiku_build_addr_t
 
+#if defined(HAIKU_HOST_PLATFORM_MSYS)
+#define __addr_t_defined
+#endif
+
 #include <Errors.h>
 
 #include <fcntl.h>
@@ -41,10 +30,7 @@ typedef unsigned long	haiku_build_addr_t;
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
-
-#if !defined(HAIKU_HOST_PLATFORM_MINGW)
 #include <sys/uio.h>
-#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -62,11 +48,6 @@ 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_MINGW)
-extern char*	stpcpy(char* dest, const char* src);
-extern char*	strcasestr(const char* s, const char* find);
-#endif
-
 // BeOS only
 extern ssize_t  read_pos(int fd, off_t pos, void* buffer, size_t count);
 extern ssize_t  write_pos(int fd, off_t pos, const void* buffer, size_t count);

headers/build/host/mingw/endian.h

@@ -1,15 +0,0 @@
-#ifndef _HAIKU_BUILD_COMPATIBILITY_MINGW_ENDIAN
-#define _HAIKU_BUILD_COMPATIBILITY_MINGW_ENDIAN
-
-
-// There's no <endian.h> in MinGW.
-
-#include <sys/param.h>
-
-#define	__LITTLE_ENDIAN	LITTLE_ENDIAN
-#define	__BIG_ENDIAN	BIG_ENDIAN
-
-#define __BYTE_ORDER BYTE_ORDER
-
-
-#endif	// _HAIKU_BUILD_COMPATIBILITY_MINGW_ENDIAN

src/build/libroot/fs_attr_generic.cpp

@@ -21,7 +21,7 @@
 // Include the interface to the host platform attributes support, if it shall be
 // used to tag files with unique IDs to identify their attribute directory.
 #if HAIKU_HOST_USE_XATTR_REF
-#	if defined(HAIKU_HOST_PLATFORM_LINUX)
+#	if defined(HAIKU_HOST_PLATFORM_LINUX) || defined(HAIKU_HOST_PLATFORM_MSYS)
 #		include "fs_attr_xattr.h"
 #	elif defined(HAIKU_HOST_PLATFORM_FREEBSD)
 #		include "fs_attr_extattr.h"

src/build/libsolv/Jamfile

@@ -33,8 +33,8 @@ switch $(HOST_PLATFORM) {
 		DEFINES += HAVE_STRCHRNUL HAVE_FUNOPEN ;
 	case darwin :
 		DEFINES += HAVE_FUNOPEN HAVE_QSORT_R ;
-	case mingw :
+	case msys :
-		DEFINES += ;
+		DEFINES += HAVE_STRCHRNUL HAVE_QSORT_R HAVE_FOPENCOOKIE ;
 	case * :
 		Exit $(SUBDIR)/Jamfile: "Please add a case for your platform"
 			"($(HOST_PLATFORM))!" ;