Hi, With last weekend's cvs version of RC_1_34_0 is was able to use the dynamic-library version of the unit_test_framework. Since I did a cvs update yesterday I get a link error trying to do so: g++ -o build/debug/test/kern/test_macros.o -c -g -Wall -ftemplate-depth-255 -O0 -fno-inline -DBOOST_TEST_DYN_LINK -I. -I/home/hoeppler/src/boost_RC_1_34_0 test/kern/test_macros.cpp g++ -o build/debug/test/kern/test_macros -Wl,-rpath-link,. build/debug/test/kern/test_macros.o build/debug/src/kern/parser/macros.o -L/home/hoeppler/src/boost_RC_1_34_0/stage/lib -lboost_filesystem-gcc41-d -lboost_regex-gcc41-d -lboost_unit_test_framework-gcc41-d /usr/lib/gcc/i586-suse-linux/4.1.0/../../../crt1.o: In function `_start': init.c:(.text+0x18): undefined reference to `main' collect2: ld returned 1 exit status Addidtional information: This is gcc-4.1.0 on linux. The boost libs were built with the boost build system. I am setting up test_suits as follows: test_suite* init_unit_test_suite( int, char* [] ) { test_suite* test(BOOST_TEST_SUITE("Unit test macros")); // <snip> return test; } Any idea what's going wrong? Thanks Chris