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Jonathan Wakely c644b7df11 libstdc++: Use LTLIBICONV when linking libstdc++.so [PR93602] 
This fixes missing libiconv symbols when libstdc++ is built on a system
that has libiconv installed. If the libiconv headers are found then
libstdc++ depends on libiconv_open etc instead of libc's iconv_open. But
without this fix libstdc++ is not linked to the libiconv library that
provides the definitions of those symbols.

As discussed in PR 93602 this changed means that libstdc++.so.6 might
have an rpath pointing to the location of the libiconv.so library. If
that is not desired, then GCC must be configured to link to a static
libiconv.a instead, using either --with-libiconv-type=static or an
in-tree build of libiconv.

libstdc++-v3/ChangeLog:

	PR libstdc++/93602
	* doc/xml/manual/prerequisites.xml: Document libiconv
	workarounds.
	* doc/html/manual/setup.html: Regenerate.
	* src/Makefile.am (CXXLINK): Add $(LTLIBICONV).
	* src/Makefile.in: Regenerate.
2022-04-20 13:54:57 +01:00
..
doxygen libstdc++: Define std::expected for C++23 (P0323R12) 2022-03-27 18:50:31 +01:00
html libstdc++: Use LTLIBICONV when linking libstdc++.so [PR93602] 2022-04-20 13:54:57 +01:00
xml libstdc++: Use LTLIBICONV when linking libstdc++.so [PR93602] 2022-04-20 13:54:57 +01:00
xsl
Makefile.am
Makefile.in