build/BeBuild.h: Throw an error if the compatibility headers are not included.

If this triggers, it means something is using the "build" errors while
the build system thinks it is not, which is always an error. Nothing
triggers this at present, but some subtle bugs in the build system
a while back would have been caught by this.

headers/build: Reunify BeBuild.h and related cleanup.

Now that we do not target BeOS and also do not include the main headers
directory when building "build" binaries, we can drop the separate
config_build directory and thus also the separate BeBuild.h, and just
..-include the regular one.

The build BeBuild.h defined empty _IMPEXP_ROOT and _IMPEXP_BE preprocessor
macros that the regular one does not; so I also re-synchronized
headers which used these as needed.

Added some support for GCC 8.

Added some support for GCC 7.

headers/os: Add gcc 5 to BeBuild.h

* While we still use gcc 4, the host tools won't
build on gcc 5 systems without this.
* x86_64 compiles under gcc 5.10 successfully

* config/{HaikuConfig.h,types.h}:
- Added macro __HAIKU_ARCH_BITS specifying the architecture bitness (32/64)
(might be more convenient to use than __HAIKU_ARCH_{32,64}_BIT).
- Added macros __HAIKU_ARCH_PHYSICAL_BITS, __HAIKU_ARCH_PHYSICAL_{32,64}_BIT,
and the types __haiku_phys_[s]addr_t. The intention is to use separate
macros and types for virtual and physical addresses, since for some
architectures (e.g. x86 with PAE) those actually differ.
* sys/types.h, BeBuild.h, SupportDefs.h:
- Added types phys_[s]addr_t and respective printf() format macros.
- Added public macros B_HAIKU_BITS, B_HAIKU_PHYSICAL_BITS,
B_HAIKU_PHYSICAL_{32,64}_BIT.

Might break the build under older Haiku installations. Will test next.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36926 a95241bf-73f2-0310-859d-f6bbb57e9c96

Also allow gcc 3 as the host compiler.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34717 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed headers/build/config to headers/build/config_build, so it doesn't
shadow the host platform's <config/...> headers anymore.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34271 a95241bf-73f2-0310-859d-f6bbb57e9c96

Updated the build versions of <BeBuild.h> and <SupportDefs.h>. Copied
modified versions of the new config headers.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34224 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some GCC 4.1.0 related build fixes (under Linux/PPC).
Doesn't build yet, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17500 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/os: Add gcc 5 to BeBuild.h

* While we still use gcc 4, the host tools won't
build on gcc 5 systems without this.
* x86_64 compiles under gcc 5.10 successfully

* config/{HaikuConfig.h,types.h}:
- Added macro __HAIKU_ARCH_BITS specifying the architecture bitness (32/64)
(might be more convenient to use than __HAIKU_ARCH_{32,64}_BIT).
- Added macros __HAIKU_ARCH_PHYSICAL_BITS, __HAIKU_ARCH_PHYSICAL_{32,64}_BIT,
and the types __haiku_phys_[s]addr_t. The intention is to use separate
macros and types for virtual and physical addresses, since for some
architectures (e.g. x86 with PAE) those actually differ.
* sys/types.h, BeBuild.h, SupportDefs.h:
- Added types phys_[s]addr_t and respective printf() format macros.
- Added public macros B_HAIKU_BITS, B_HAIKU_PHYSICAL_BITS,
B_HAIKU_PHYSICAL_{32,64}_BIT.

Might break the build under older Haiku installations. Will test next.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36926 a95241bf-73f2-0310-859d-f6bbb57e9c96

Also allow gcc 3 as the host compiler.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34717 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed headers/build/config to headers/build/config_build, so it doesn't
shadow the host platform's <config/...> headers anymore.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34271 a95241bf-73f2-0310-859d-f6bbb57e9c96

Updated the build versions of <BeBuild.h> and <SupportDefs.h>. Copied
modified versions of the new config headers.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34224 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some GCC 4.1.0 related build fixes (under Linux/PPC).
Doesn't build yet, though.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@17500 a95241bf-73f2-0310-859d-f6bbb57e9c96

Merged changes from branch build_system_redesign at revision 14573.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@14574 a95241bf-73f2-0310-859d-f6bbb57e9c96