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Document the --disable-import configuration flag

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git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/tools/make/trunk@12823 72102866-910b-0410-8b05-ffd578937521
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Nicola Pero 2002-02-27 14:00:52 +00:00
parent 60c030c385
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Documentation/install.texi
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@ -71,6 +71,7 @@ compile, and also when you install).
* Backend Bundles::
* Alternate Libraries::
* Alternate Thread Library::
* Warnings for deprecated #import::
* Cross-Compiling::
* Flat Structure::
@end menu
@ -102,7 +103,7 @@ with-library-combo option.
to compile with Apple's (NexT's) runtime on Darwin, for example. See the DESIGN
document for more examples of the variety of library combos.
@node Alternate Thread Library, Cross-Compiling, Alternate Libraries, Configuration
@node Alternate Thread Library, Warnings for deprecated #import, Alternate Libraries, Configuration
@subsection Alternate Thread Library
You can specify compilation of an alternate thread library from the one that
@ -123,7 +124,27 @@ to set compiler flags, use the CFLAGS variable when calling configure:
CFLAGS="-I/usr/local/include" ./configure --with-thread-lib="-L/usr/local/lib -lgthread -lglib"
@end example
@node Cross-Compiling, Flat Structure, Alternate Thread Library, Configuration
@node Warnings for deprecated #import, Cross-Compiling, Alternate Thread Library, Configuration
@subsection Warnings for deprecated #import
The #import directive, often found in legacy Objective-C code from the
NeXTstep and OpenStep era, is deprecated. You should use #include
instead whenever possible, and even if you use #import, you should
protect all your headers against multiple inclusions. The GCC compiler
automatically emits a warning whenever you use #import. For political
and historical reasons (basically for fear of annoying legacy users),
these warnings are disabled by gnustep-make. But if you are not a
legacy user and/or you want to make sure your Objective-C code is not
using any deprecated feature, you should configure gnustep-make with
--disable-import:
@example
./configure --disable-import
@end example
If you are a legacy user, and wonder why #import is deprecated, please
search the web and the GCC and GNUstep mailing list archives - there are
very precise and sound technical reasons.
@node Cross-Compiling, Flat Structure, Warnings for deprecated #import, Configuration
@subsection Configuring the GNUstep makefile package for a cross-compile target
By default when you run configure, it assumes that you want to create