Re: [Mingw-users] GCC 4.4.0 fails with GMP

[Roumen P. <bug...@ro...>]

Hi All,
Dennis Wassel wrote:
> Hi list,
> 
> I am experiencing (supposedly) the same issues with GMP 4.2.4
> (gmp-4.2.4-src.tar.bz2 packaged with the gcc release), using
> * binutils-2.19.1-mingw32
> * gcc-full-4.4.0-mingw32-bin-2
> * make-3.81-MSYS-1.0.11-2

At least I finish my cross-environment for gcc 4.4.0.


>> I think this is a libtool issue with the way I packaged c++.  Let me
>> look into it and get back to you.  I think you can fix it by editing the
>> libstdc++.la file.
> 
> For the record:
> - edited libstdc++.la (replaced library_names='libstdc++.dll.a' by
> library_names='libstdc++_s.a'. This fixes the "No such file" error.
> And from the release notes:
> - exported linker flags LDFLAGS='-lstdc++_s'
> - added CPPFLAGS='-D_GLIBCXX_DLL'

I could cross-build gmp 4.3.1. with flags :
CPPFLAGS='-D_GLIBCXX_DLL'
CFLAGS="-O2 -fno-strict-aliasing -Wall -posix"
CXXFLAGS="-O2 -fno-strict-aliasing -Wall -posix"
LDFLAGS='-lstdc++'
and options --enable-cxx --disable-static --enable-shared


> However, the latter two cause gmp configure to fail the 'broken
> iostream' test, while without them, it fails later when creating the
> (I think) libgmpxx libary. This is the relevant snippet of config.log:
> [I am slightly confused to not see "-lstdc++_s" anywhere]

I don't think that mingw has to create library with _s siffix.


> Test compile: std iostream
> configure:8508: g++ -D_GLIBCXX_DLL -m32 -O2 -fomit-frame-pointer
> -mtune=k8 -march=k8 -mno-cygwin conftest.cc >&5
[SNIP]

> c:\Temp\mingw\ccciHxa3.o:conftest.cc:(.text+0x54): undefined reference
> to `_imp___ZSt4cout'
> collect2: ld returned 1 exit status
> configure:8511: $? = 1
> failed program was:
> /* This test rejects g++ 2.7.2 which doesn't have <iostream>, only a
>     pre-standard iostream.h. */
> #include <iostream>
> 
> /* This test rejects OSF 5.1 Compaq C++ in its default pre-standard iostream
>    mode, since that mode puts cout in the global namespace, not "std".  */
> void someoutput (void) { std::cout << 123; }
> 
> int main (void) { return 0; }
> configure:8537: result: no, std iostream
[SNIP]


> Am I missing something?
> Otherwise I hope this helps extending the report.
No

> Cheers,
> Dennis
> 


There is list of files returned by:
$ find . -name '*stdc++*'
./lib/gcc/i486-mingw32/4.4.0/include/c++/i486-mingw32/bits/stdc++.h
./lib/gcc/i486-mingw32/4.4.0/libstdc++.dll.a
./lib/gcc/i486-mingw32/4.4.0/libstdc++.la
./lib/gcc/i486-mingw32/4.4.0/libstdc++.a
./lib/gcc/i486-mingw32/4.4.0/debug/libstdc++.dll.a
./lib/gcc/i486-mingw32/4.4.0/debug/libstdc++.la
./lib/gcc/i486-mingw32/4.4.0/debug/libstdc++.a
./lib/gcc/i486-mingw32/4.4.0/bin/libstdc++-6.dll
./lib/gcc/i486-mingw32/bin/libstdc++-6.dll


The partial content of .../4.4.0/libstdc++.la is:
-------------------
# The name that we can dlopen(3).
dlname='../bin/libstdc++-6.dll'

# Names of this library.
library_names='libstdc++.dll.a'

# The name of the static archive.
old_library='libstdc++.a'
--------------------

All is correct according to libtool: if a libdir is XXXX/<LASTDIR>
import and static libraries go in XXXX/<LASTDIR> and dll is installed
in XXXX/bin.

Roumen