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Re: [build, doc, v3] Support Sun symbol versioning in libstdc++-v3, rev. 2



On 2 Jul 2010, at 14:20, IainS wrote:



On 2 Jul 2010, at 13:58, Rainer Orth wrote:


but no other references to "symbol" that have any bearing..
so perhaps the test is not being run at all for Darwin?

Sure it is, otherwise you wouldn't see Sun-style symbol versioning being
enabled. The next test with


gcc -fPIC -shared -Wl,-M,./conftest.map

is the interesting one.  What happens there?  And please provide the
relevant output fragment of the libssp configure run, too.

configure:4156: /GCC/gcc-4-6-trunk-build/./gcc/xgcc -B/GCC/gcc-4-6- trunk-build/./gcc/ -B/GCC/gcc-4-6-install/i686-apple-darwin9/bin/ -B/ GCC/gcc-4-6-install/i686-apple-darwin9/lib/ -isystem /GCC/gcc-4-6- install/i686-apple-darwin9/include -isystem /GCC/gcc-4-6-install/ i686-apple-darwin9/sys-include -o conftest -g -O2 -fPIC -shared -Wl,-M,./conftest.map conftest.c >&5
ld warning: in ./conftest.map, file is not of required architecture
configure:4156: $? = 0
configure:4166: result: sun


hm. I guess that -M is unrecognized and the linker falls back to it's default which is to expect the remaining items to be objects - which, of course, the ma file is not. However, since the link does not actually fail - I guess it only reports a warning

As an aside, I wonder if the autoconfigury/libtool people have already resolved all these issues?
Iain



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