build: Use libroot_build on Haiku.

Previously we just used the system libroot, which of course meant
that when libroot's ABI changed, the build broke. Now we use the full
libroot_build that we do on non-Haiku platforms. The logic for "BeOS-compatible
but not Haiku" does not really apply anymore, so it has been gutted where
appropriate (and libhaikucompat has been decoupled from the build.)

The only caveat here is the change to Errors.h -- we really should be using
the system's one where I included the one from the tree, but for whatever
reason, GCC2 refused to handle the #include_next properly.

Fixes the build breakage of Haiku-on-Haiku by my prior commits (sorry).

build/jam/BuildSetup

@@ -417,6 +417,10 @@ HOST_BUILD_COMPATIBILITY_LIB_DIR = [ FDirName $(HOST_OBJECT_BASE_DIR) lib ] ;
 # also removes the attributes.
 HOST_RM_ATTRS_TARGET = ;
 
+HOST_LIBROOT = libroot_build_function_remapper.a libroot_build.so ;
+HOST_STATIC_LIBROOT = libroot_build_function_remapper.a libroot_build.a ;
+HOST_LIBBE = libbe_build.so ;
+
 if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
 	# the C++ standard and support libraries
 	if $(HOST_GCC_VERSION[1]) < 3 {
@@ -427,9 +431,6 @@ if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
 		HOST_LIBSUPC++ = supc++ ;
 	}
 
-	HOST_LIBROOT = root ;
-	HOST_STATIC_LIBROOT = $(HOST_LIBROOT) ;
-	HOST_LIBBE = libbe_build.so ;
 	HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
 		= "export LIBRARY_PATH=$LIBRARY_PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;
 	HOST_PTHREAD_LINKFLAGS = ;
@@ -440,15 +441,9 @@ if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
 		HaikuBuildCompatibility.h ] ;
 	HOST_CCFLAGS += $(compatibilityHeader) ;
 	HOST_C++FLAGS += $(compatibilityHeader) ;
-
-	# compatibility library
-	HOST_HAIKU_COMPATIBILITY_LIBS = libhaikucompat.a ;
 } else {
 	HOST_LINKFLAGS += -lm ;
 	HOST_LIBSTDC++ = stdc++ ;
-	HOST_LIBROOT = libroot_build_function_remapper.a libroot_build.so ;
-	HOST_STATIC_LIBROOT = libroot_build_function_remapper.a libroot_build.a ;
-	HOST_LIBBE = libbe_build.so ;
 	if $(HOST_PLATFORM) = cygwin {
 		HOST_ADD_BUILD_COMPATIBILITY_LIB_DIR
 			= "export PATH=$PATH:$(HOST_BUILD_COMPATIBILITY_LIB_DIR)" ;

build/jam/MainBuildRules

@@ -650,11 +650,9 @@ rule BuildPlatformMain
 		USES_BE_API on $(objects) = $(usesBeAPI) ;
 
 		# add the build libroot
-		if ! $(HOST_PLATFORM_BEOS_COMPATIBLE) {
-			local libroot = [ on $(target) return $(HOST_LIBROOT) ] ;
-			Depends $(target) : $(libroot) ;
-			NEEDLIBS on $(target) += $(libroot) ;
-		}
+		local libroot = [ on $(target) return $(HOST_LIBROOT) ] ;
+		Depends $(target) : $(libroot) ;
+		NEEDLIBS on $(target) += $(libroot) ;
 	}
 
 	Main $(target) : $(sources) ;

headers/build/os/support/Errors.h

@@ -2,8 +2,8 @@
  * Copyright 2007-2014 Haiku, Inc. All rights reserved.
  * Distributed under the terms of the MIT License.
  */
-#ifndef _ERRORS_H
-#define _ERRORS_H
+#ifndef _BUILD_ERRORS_H
+#define _BUILD_ERRORS_H
 
 
 #include <errno.h> /* build-specific overrides errno */
@@ -493,7 +493,8 @@
 
 	#undef errno
 	#define errno (*_haiku_build_errno())
-
+#elif defined(HAIKU_HOST_PLATFORM_HAIKU)
+#	include <../os/support/Errors.h>
 #endif	// ! BUILDING_HAIKU_ERROR_MAPPER
 
 #ifdef __cplusplus
@@ -508,4 +509,4 @@ extern int _haiku_to_host_error(int error);
 #endif
 
 
-#endif	/* _ERRORS_H */
+#endif	/* _BUILD_ERRORS_H */

src/bin/rc/Jamfile

@@ -6,27 +6,10 @@ GENERATE_C++ on [ FGristFiles lexer.l parser.y ] = true ;
 
 SubDirC++Flags -Wno-sign-compare -Wno-unused ;
 
-local r5Compatibility = [ FDirName $(SUBDIR) R5Compatibility.h ] ;
-SubDirCcFlags -include $(r5Compatibility) ;
-SubDirC++Flags -include $(r5Compatibility) ;
-
 StaticLibrary librdef.a :
 	compile.cpp decompile.cpp lexer.l parser.y rdef.cpp ;
 
-# On BeOS incompatible platforms we implicitly link against libroot_build.so,
-# which does already include the strl*() routines.
-local strlSources ;
-if $(HOST_PLATFORM_BEOS_COMPATIBLE) {
-	strlSources = strlcpy.c strlcat.c ;
-}
-
 BinCommand rc :
 	rc.cpp
-
-	# these two are needed for R5 only
-	$(strlSources)
 	: librdef.a [ TargetLibstdc++ ] be
 ;
-
-SEARCH on [ FGristFiles $(strlSources) ]
-	= [ FDirName $(HAIKU_TOP) src system libroot posix string ] ;

src/bin/rc/R5Compatibility.h

@@ -1,26 +0,0 @@
-#ifndef RC_R5_COMPATIBILITY_H
-#define RC_R5_COMPATIBILITY_H
-
-#ifndef __HAIKU__
-
-#include <sys/types.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-// Already defined unter Linux.
-#if (defined(__BEOS__) || defined(__HAIKU__))
-extern size_t	strnlen(const char *string, size_t count);
-#endif
-
-extern size_t	strlcat(char *dest, const char *source, size_t length);
-extern size_t	strlcpy(char *dest, const char *source, size_t length);
-
-#ifdef __cplusplus
-}	// extern "C"
-#endif
-
-#endif // !__HAIKU__
-
-#endif	// RC_R5_COMPATIBILITY_H

src/build/Jamfile

@@ -1,7 +1,6 @@
 SubDir HAIKU_TOP src build ;
 
 SubInclude HAIKU_TOP src build libbe ;
-SubInclude HAIKU_TOP src build libhaikucompat ;
 SubInclude HAIKU_TOP src build libicon ;
 SubInclude HAIKU_TOP src build libpackage ;
 SubInclude HAIKU_TOP src build libroot ;

src/build/libroot/Jamfile

@@ -36,7 +36,7 @@ MakeLocate libroot_build.so : $(HOST_BUILD_COMPATIBILITY_LIB_DIR) ;
 
 # darwin already has strlcpy and strlcat in libSystem
 local strlSources ;
-if $(HOST_PLATFORM) != darwin {
+if $(HOST_PLATFORM) != darwin && $(HOST_PLATFORM) != haiku_host {
 	strlSources = strlcpy.c strlcat.c ;
 }
 

src/build/libroot/function_remapper.cpp

@@ -5,6 +5,7 @@
 
 
 #include <stdarg.h>
+#include <fcntl.h>
 
 #include "remapped_functions.h"
 
@@ -210,7 +211,7 @@ mknodat(int fd, const char* name, mode_t mode, dev_t dev)
 extern "C" int HIDDEN_FUNCTION_ATTRIBUTE
 creat(const char* path, mode_t mode)
 {
-	HIDDEN_FUNCTION(RESOLVE(creat));
+	HIDDEN_FUNCTION(creat);
 
 	return _haiku_build_creat(path, mode);
 }

src/tools/rc/Jamfile

@@ -8,18 +8,10 @@ GENERATE_C++ on [ FGristFiles lexer.l parser.y ] = true ;
 
 SubDirC++Flags -Wno-sign-compare -Wno-unused ;
 
-local r5Compatibility = [ FDirName $(HAIKU_TOP) src bin rc R5Compatibility.h ] ;
-SubDirCcFlags -include $(r5Compatibility) ;
-SubDirC++Flags -include $(r5Compatibility) ;
-
 BuildPlatformStaticLibrary <build>librdef.a :
 	compile.cpp decompile.cpp lexer.l parser.y rdef.cpp ;
 
 BuildPlatformMain <build>rc :
 	rc.cpp
-
 	: <build>librdef.a $(HOST_LIBSTDC++) $(HOST_LIBBE) $(HOST_LIBSUPC++)
 ;
-
-SEARCH on [ FGristFiles $(strlSources) ]
-	= [ FDirName $(HAIKU_TOP) src system libroot posix string ] ;