PATCH RFA: New configure option --with-native-system-header-dir
Ian Lance Taylor
iant@google.com
Sun Oct 9 09:34:00 GMT 2011
Ian Lance Taylor <iant@google.com> writes:
> So, it seems to me that we should:
>
> * Remove SYSTEM_INCLUDE_DIR, which is undefined and unnecessary.
>
> * Move the definition of NATIVE_SYSTEM_HEADER_DIR into config.gcc
> (named native_system_header_dir). The default is /usr/include.
> This appears to be necessary since the configure script itself needs
> to know this value.
>
> * Have the configure script use NATIVE_SYSTEM_HEADER_DIR when setting
> target_header_dir.
>
> * Arrange for Makefile to define NATIVE_SYSTEM_HEADER_DIR when
> compiling cppdefault.c (i.e., add it to PREPROCESSOR_DEFINES in
> Makefile.in).
>
> * Replace STANDARD_INCLUDE_DIR in cppdefault.c with
> NATIVE_SYSTEM_HEADER_DIR.
>
> * Remove STANDARD_INCLUDE_DIR.
>
> * Add the --with-native-system-header-dir option.
This patch implements this proposal. Only lightly tested so far. How
does this look if testing succeeds?
Ian
2011-10-08 Simon Baldwin <simonb@google.com>
Ian Lance Taylor <iant@google.com>
* configure.ac: Add --with-native-system-header-dir. Set and
substitute NATIVE_SYSTEM_HEADER_DIR. Use native_system_header
when setting target_header_dir.
* config.gcc: Always set native_system_header_dir.
(*-*-gnu*): Set native_system_header_dir. Don't use t-gnu.
(i[34567]86-pc-msdosdjgpp*): Set native_system_header_dir. Don't
use i386/t-djgpp.
(i[34567]86-*-mingw* | x86_64-*-mingw*): Set
native_system_header_dir.
(spu-*-elf*): Set native_system_header_dir.
* Makefile.in (NATIVE_SYSTEM_HEADER_DIR): Set to
@NATIVE_SYSTEM_HEADER_DIR@.
(PREPROCESSOR_DEFINES): Define NATIVE_SYSTEM_HEADER_DIR.
* cppdefault.c (STANDARD_INCLUDE_DIR): Don't define.
(NATIVE_SYSTEM_HEADER_COMPONENT): Rename from
STANDARD_INCLUDE_COMPONENT.
(cpp_include_defaults): Don't use SYSTEM_INCLUDE_DIR. Rename
STANDARD_INCLUDE_DIR to NATIVE_SYSTEM_HEADER_DIR.
* system.h: Poison SYSTEM_INCLUDE_DIR, STANDARD_INCLUDE_DIR, and
STANDARD_INCLUDE_COMPONENT.
* config/i386/t-mingw32 (NATIVE_SYSTEM_HEADER_DIR): Remove.
* config/i386/t-mingw-w32: Likewise.
* config/i386/t-mingw-w64: Likewise.
* config/spu/t-spu-elf: Likewise.
* config/i386/t-djgpp: Remove.
* config/t-gnu: Remove.
* config/i386/mingw32.h (STANDARD_INCLUDE_DIR): Don't define.
(NATIVE_SYSTEM_HEADER_COMPONENT): Rename from
STANDARD_INCLUDE_COMPONENT.
* config/i386/djgpp.h (STANDARD_INCLUDE_DIR): Don't define.
* config/spu/spu-elf.h: Likewise.
* config/vms/xm-vms.h: Likewise.
* config/gnu.h: Likewise.
* config/openbsd.h (INCLUDE_DEFAULTS): Change STANDARD_INCLUDE_DIR
and STANDARD_INCLUDE_COMPONENT to NATIVE_SYSTEM_HEADER_DIR and
NATIVE_SYSTME_HEADER_COMPONENT.
* doc/install.texi (Configuration): Document
--with-native-system-header-dir. Mention it in the documentation
for --with-sysroot and --with-build-sysroot.
* doc/tm.texi.in (Driver): Don't document SYSTEM_INCLUDE_DIR or
STANDARD_INCLUDE_DIR. Rename STANDARD_INCLUDE_COMPONENT to
NATIVE_SYSTEM_HEADER_COMPONENT. Rename uses of
STANDARD_INCLUDE_DIR to NATIVE_SYSTEM_HEADER_DIR.
* doc/fragments.texi (Target Fragment): Don't document
NATIVE_SYSTEM_HEADER_DIR.
* configure, doc/tm.texi: Rebuild.
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