Hello Boost, I'd like to build Boost.Context with clang on Windows with BB. There are my files: site-config.jam: using clang-win : : "C:/Program Files/LLVM/bin/clang-cl.exe" : <compatibility>vc14 <cxxflags>-Xclang <cxxflags>-std=c++1z <cxxflags>-DBOOST_USE_WINDOWS_H <cxxflags>-DNOMINMAX <cxxflags>-DWIN32_LEAN_AND_MEAN <cxxflags>-D_HAS_AUTO_PTR_ETC=1 ; Jamroot: local BOOST_ROOT = [ modules.peek : BOOST_ROOT ] ; project main : source-location . : requirements <include>$(BOOST_ROOT) <define>BOOST_ALL_NO_LIB=1 ; use-project /boost : $(BOOST_ROOT) ; exe main : main.cpp /boost//coroutine /boost//date_time ; main.cpp int main() {} I run the command: b2.exe -d+2 toolset=clang-win address-model=64 link=static runtime-link=static release -sBOOST_ROOT=D:\path\to\boost This gives me following error: clang-win.compile.asm D:\path\to\boost\bin.v2\libs\context\build\clang-vc14-win\release\link-static\runtime-link-static\threading-multi\asm\make_x86_64_ms_pe_gas.obj -c -Zp4 -Cp -Cx -DBOOST_ALL_NO_LIB=1 -DBOOST_CONTEXT_SOURCE -DBOOST_DISABLE_ASSERTS -DNDEBUG -DBOOST_ALL_NO_LIB=1 -DBOOST_CONTEXT_SOURCE -DBOOST_DISABLE_ASSERTS -DNDEBUG /W3 -Fo "D:\path\to\boost\bin.v2\libs\context\build\clang-vc14-win\release\link-static\runtime-link-static\threading-multi\asm\make_x86_64_ms_pe_gas.obj" "D:\path\to\boost\libs\context\src\asm\make_x86_64_ms_pe_gas.asm" '-c' is not recognized as an internal or external command, Am I doing something wrong? Thanks.