[Boost-build] How does one pass user flags to gcc.compile.asm?

Subject: [Boost-build] How does one pass user flags to gcc.compile.asm?
From: etwietmeyer_at_[hidden]
Date: 2014-04-04 00:22:01

Hello,

 

I'm using a version of gcc that requires a -sysroot flag for all
invocations.  This includes invocations for assembling .S files in the
context lib.  Looking at gcc.jam, I see that there is no $(USER_OPTIONS)
parameter passed.  I tried mimicking the msvc.jam mechanism that specifies
<asmflags> as USER_ASMFLAGS, but as my knowledge of bjam is virtually nil
I have not been successful.

 

Can someone provide a pointer or a suggestion as to what to do?

 

Thanks,

 

-Eric