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Re: Sun C++ shared library creation failing
From: |
Albert Chin |
Subject: |
Re: Sun C++ shared library creation failing |
Date: |
Sun, 1 Jun 2003 18:15:56 -0500 |
User-agent: |
Mutt/1.4i |
On Sun, Jun 01, 2003 at 03:47:42PM -0500, Albert Chin wrote:
> On Solaris 9/SPARC with:
> $ CC -v
> CC: Forte Developer 7 C++ 5.4 Patch 111715-06 2003/03/29
> ...
> PASS: tagdemo-conf.test
> FAIL: tagdemo-make.test
> SKIP: tagdemo-exec.test
> PASS: tagdemo-shared.test
> FAIL: tagdemo-make.test
> SKIP: tagdemo-exec.test
> ...
>
> Here's a copy of the error:
> $ sh tagdemo-make.test
> ...
> CC -G -zdefs -nolib -hlibbaz.so.0 -o .libs/libbaz.so.0.0.0
> .libs/baz.o -Qoption ld -z -Qoption ld allextract ./.libs/libfoo.a
> -Qoption ld -z -Qoption ld defaultextract -lm
> Undefined first referenced
> symbol in file
> std::basic_ostream<char,std::char_traits<char>
> >&std::operator<<(std::basic_ostream<char,std::char_traits<char> >&,const
> char*) ./.libs/libfoo.a(foo.o)
> ...
>
> We create a C++ shared library with -nolib which doesn't link in
> -lCstd, hence the error above. How do we fix? If -nolib isn't used CC
> adds the following libraries by default:
> -lCstd -lCrun -lm -lw -lcx -lc
>
> Is it really wise to use -nolib?
Ok, I've dug some more. If we want -zdefs and -nolib, we must add
-lCstd (Sun CC 6.0, 7). From libtool.m4:
# There doesn't appear to be a way to prevent this compiler from
# explicitly linking system object files so we need to strip them
# from the output so that they don't get included in the library
# dependencies.
output_verbose_link_cmd='templist=`$CC -G $CFLAGS -v conftest.$objext
2>&1 | grep "\-[[LR]]"`; list=""; for z in $templist; do case $z in
conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac;
done; echo $list'
I'm not seeing this though. CC -G with Sun CC 5.0, 6.0, and 7 don't
add any libraries automatically. GCC seems to add -lstdc++ regardless
so postdeps gets the "-lstdc++" and gets the above test right.
--
albert chin (address@hidden)