Re: [boost] Boost.ProgramOptions dynamic linking on mingw

From: Alo Sarv (alo.sarv_at_[hidden])
Date: 2005-07-18 19:31:12

On 7/18/05, Janusz Piwowarski <jpiw_at_[hidden]> wrote:
> Vladimir Prus wrote:
> > Two questions:
> > 1. What does the flag do?
> > 2. Somebody else reported successfull built with mingw. Do you know
> > if this problem is specific to some version of mingw?

I cannot find any documentation on the flag; the page where I found
this fix is here:
http://www.ogre3d.org/phpBB2/viewtopic.php?p=62249&
There were several more references to this flag at:
http://sourceforge.net/mailarchive/forum.php?thread_id=7643187&forum_id=5121
http://permalink.gmane.org/gmane.os.cygwin.patches/441 (cygwin-related)

This issue seems to be specific to mingw 3.4+ versions - just few days
ago there was an older mingw in the regression-test tables, and that
one reported working fine (A 3.3-based version IIRC, but I can't be
sure). A look into few days old regression-test tables could provide
the exact mingw version which still worked.

Here's a test / proof with mingw 3.4.2, boost CVS (few days old), on
Win 2003 SP1:

C:\boostcvs-src\libs\program_options\test>g++ -I
c:\boostcvs\include\boost-1_33 -L c:\boostcvs\lib
variable_map_test.cpp
c:\boostcvs\lib\libboost_test_exec_monitor-mgw.lib
-lboost_program_options-mgw-d -o test
Info: resolving vtable for boost::program_options::variables_mapby
linking to __imp___ZTVN5boost15program_options13variables_mapE
(auto-import)
Info: resolving vtable for boost::program_options::untyped_valueby
linking to __imp___ZTVN5boost15program_options13untyped_valueE
(auto-import)
Info: resolving vtable for
boost::program_options::value_semantic_codecvt_helper<char>by linking
to __imp___ZTVN5boost15program_options29value_semantic_codecvt_helperIcEE
(auto-import)
Info: resolving boost::program_options::arg      by linking to
__imp___ZN5boost15program_options3argE (auto-import)
Info: resolving vtable for boost::program_options::validation_errorby
linking to __imp___ZTVN5boost15program_options16validation_errorE
(auto-import)
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options13variables_mapD1Ev[boost::program_options::variables_map::~variables_map()]+0x3a):variable_map_test.cpp:
variable 'vtable for boost::program_options::variables_map' can't be
auto-imported. Please read the documentation for ld's
--enable-auto-import for details.
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options13untyped_valueC1Eb[boost::program_options::untyped_value::untyped_value(bool)]+0x1c):variable_map_test.cpp:
variable 'vtable for boost::program_options::untyped_value' can't be
auto-imported. Please read the documentation for ld's
--enable-auto-import for details.
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options29value_semantic_codecvt_helperIcEC2Ev[boost::program_options::value_semantic_codecvt_helper<char>::value_semantic_codecvt_helper()]+0x16):variable_map_test.cpp:
variable 'vtable for
boost::program_options::value_semantic_codecvt_helper<char>' can't be
auto-imported. Please read the documentation forld's
--enable-auto-import for details.
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options29value_semantic_codecvt_helperIcED2Ev[boost::program_options::value_semantic_codecvt_helper<char>::~value_semantic_codecvt_helper()]+0xb):variable_map_test.cpp:
variable 'vtable for
boost::program_options::value_semantic_codecvt_helper<char>' can't be
auto-imported. Please read the documentation forld's
--enable-auto-import for details.
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options16validation_errorD2Ev[boost::program_options::validation_error::~validation_error()]+0x3a):variable_map_test.cpp:
variable 'vtable for boost::program_options::validation_error' can't
be auto-imported. Please read the documentation for ld's
--enable-auto-import for details.
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options16validation_errorC2ERKS1_[boost::program_options::validation_error::validation_error(boost::program_options::validation_error
const&)]+0x53):variable_map_test.cpp: variable 'vtable for
boost::program_options::validation_error' can't be auto-imported.
Please read the documentation for ld's --enable-auto-import for
details.
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options16validation_errorD1Ev[boost::program_options::validation_error::~validation_error()]+0x3a):variable_map_test.cpp:
variable 'vtable for boost::program_options::validation_error' can't
be auto-imported. Please read the documentation for ld's
--enable-auto-import for details.
C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp/ccYncaaa.o(.text$_ZN5boost15program_options16validation_errorC1ERKSs[boost::program_options::validation_error::validation_error(std::basic_string<char,
std::char_traits<char>, std::allocator<char> >
const&)]+0x53):variable_map_test.cpp: variable 'vtable for
boost::program_options::validation_error' can't be auto-imported.
Please read the documentation for ld's --enable-auto-import for
details.
collect2: ld returned 1 exit status

C:\boostcvs-src\libs\program_options\test>g++ -I
c:\boostcvs\include\boost-1_33 -L c:\boostcvs\lib
variable_map_test.cpp
c:\boostcvs\lib\libboost_test_exec_monitor-mgw.lib
-lboost_program_options-mgw-d -o test
-Wl,--enable-runtime-pseudo-reloc
Info: resolving vtable for boost::program_options::variables_mapby
linking to __imp___ZTVN5boost15program_options13variables_mapE
(auto-import)
Info: resolving vtable for boost::program_options::untyped_valueby
linking to __imp___ZTVN5boost15program_options13untyped_valueE
(auto-import)
Info: resolving vtable for
boost::program_options::value_semantic_codecvt_helper<char>by linking
to __imp___ZTVN5boost15program_options29value_semantic_codecvt_helperIcEE
(auto-import)
Info: resolving boost::program_options::arg      by linking to
__imp___ZN5boost15program_options3argE (auto-import)
Info: resolving vtable for boost::program_options::validation_errorby
linking to __imp___ZTVN5boost15program_options16validation_errorE
(auto-import)

C:\boostcvs-src\libs\program_options\test>test
Running 1 test case...

*** No errors detected

C:\boostcvs-src\libs\program_options\test>g++ -v
Reading specs from c:/mingw/bin/../lib/gcc/mingw32/3.4.2/specs
Configured with: ../gcc/configure --with-gcc --with-gnu-ld
--with-gnu-as --host=mingw32 --target=mingw32 --prefix=/mingw
--enable-threads --disable-nls
--enable-languages=c,c++,f77,ada,objc,java --disable-win32-registry
--disable-shared --enable-sjlj-exceptions --enable-libgcj
--disable-java-awt --without-x --enable-java-gc=boehm
--disable-libgcj-debug --enable-interpreter
--enable-hash-synchronization --enable-libstdcxx-debug
Thread model: win32
gcc version 3.4.2 (mingw-special)

Hope this helps,
Alo