id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
4670	Revised boost/config/compiler/gcc.hpp causes linker errors for Cygwin WIN32 apps	cvclarkeiii@…	Robert Ramey	"A revision to boost/config/compiler/gcc.hpp makes the assumption that because Cygwin does not define a WIN32 macro, a WIN32 macro will never be defined when compiling applications for Cygwin.  Win32 applications are supported under Cygwin, and the use of some third party libs (i.e. Agilent I/O Libraries) requires that a WIN32 macro be defined.  This problem causes linker errors similar to the error below: 

scons: done reading SConscript files.
scons: Building targets ...
g++ -o test_serialization.o -c -g -Wall -ansi -mwin32 -mthreads -I/c/dvlp/boost_1_44_0 test_serialization.cpp
g++ -o test_serialization.exe test_serialization.o -L/c/dvlp/boost_1_44_0/stage/lib -lboost_serialization -lboost_date_time -lboost_system
Cannot export _ZN5boost13serialization9singletonINS_7archive6detail12_GLOBAL__N_116guid_initializerI7DerivedEEE12get_instanceEv: symbol not found
Cannot export _ZN5boost13serialization9singletonINS_7archive6detail12_GLOBAL__N_116guid_initializerI7DerivedEEE20get_mutable_instanceEv: symbol not found
collect2: ld returned 1 exit status
scons: *** [test_serialization.exe] Error 1
scons: building terminated because of errors.

A patch is attached that fixes this problem
"	Bugs	closed	To Be Determined	serialization	Boost 1.44.0	Problem	fixed		setosha@…