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* porting.texi: Expand libtool information.

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From-SVN: r37688
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David Edelsohn 2000-11-23 05:51:07 +00:00 committed by David Edelsohn
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4
libstdc++-v3/ChangeLog
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@ -1,3 +1,7 @@
2000-11-23 David Edelsohn <edelsohn@gnu.org>
* porting.texi: Expand libtool information.
2000-11-23 Gabriel Dos Reis <gdr@codesourcery.com>
* include/bits/ios_base.h (ios_base::failure::~failure,

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libstdc++-v3/porting.texi
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@ -420,13 +420,22 @@ __atomic_add (_Atomic_word* __mem, int __val)
@node Libtool
@chapter Libtool
The C++ library is linked with libtool. Explaining the full workings of
libtool is beyond the scope of this document, but there is one
particular bit that should be explained here. The C++ run-time library
contains initialization code that needs to be run as the library is
loaded. Often, that requires linking in special object files when the
C++ library is built as a shared library, or taking other
system-specific actions.
The C++ library is compiled, archived and linked with libtool.
Explaining the full workings of libtool is beyond the scope of this
document, but there are a few, particular bits that are necessary for
porting.
Some parts of the libstdc++-v3 library are compiled with the libtool
@code{--tags CXX} option (the C++ definitions for libtool). Therefore,
@file{ltcf-cxx.sh} in the top-level directory needs to have the correct
logic to compile and archive objects equivalent to the C version of libtool,
@file{ltcf-c.sh}. Some libtool targets have definitions for C but not
for C++, or C++ definitions which have not been kept up to date.
The C++ run-time library contains initialization code that needs to be
run as the library is loaded. Often, that requires linking in special
object files when the C++ library is built as a shared library, or
taking other system-specific actions.
The libstdc++-v3 library is linked with the C version of libtool, even though it
is a C++ library. Therefore, the C version of libtool needs to ensure