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* docs/html/17_intro/porting.texi (_GLIBCPP_AVOID_FSEEK): Remove.

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From-SVN: r52642
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Loren J. Rittle 2002-04-22 22:46:34 +00:00 committed by Loren J. Rittle
parent 9340544b77
commit c5ac5edb61
2 changed files with 5 additions and 8 deletions
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4
libstdc++-v3/ChangeLog
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@ -1,3 +1,7 @@
2002-04-22 Loren J. Rittle <ljrittle@acm.org>
* docs/html/17_intro/porting.texi (_GLIBCPP_AVOID_FSEEK): Remove.
2002-04-20 Jason Merrill <jason@redhat.com>
PR libstdc++/4150

9
libstdc++-v3/docs/html/17_intro/porting.texi
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@ -142,18 +142,11 @@ need to define. You will need to add them to the
target. It will not work to simply define these macros in
@file{os_defines.h}.
At this time, there are two libstdc++-v3-specific macros which may be
At this time, there is one libstdc++-v3-specific macro which may be
defined. @code{_G_USING_THUNKS} may be defined to 0 to express that the
port doesn't use thunks (although it is unclear that this is still
useful since libio support isn't currently working and the g++ v3 ABI
invalidates the assumption that some ports don't use thunks).
@code{_GLIBCPP_AVOID_FSEEK} may be defined if seeking on an interactive
stream (or one hooked to a pipe) is not allowed by the OS. In this
case, getc()/ungetc() will be used at some key locations in the library
implementation instead of fseek(). Currently, the code path to avoid
fseek() is only enabled when the seek size is 1 character away from the
current stream position. This is known to improve *-unknown-freebsd*,
sparc-sun-solaris2.* and *-*-mingw32*.
Finally, you should bracket the entire file in an include-guard, like
this: