Some questions about LGPL

[hank . acm]

Hi,
I have some questions about LGPL.
I have a commercial project.
And it contains a "NASM assembler".
NASM x86 assembler is use GNU Lesser General Public License.
So , if  I use NASM assembler as a part of my project and I don't
publish my sourcecode,
Do I comply with the LGPL rule ?

By the way,
The NASM assembler is a executable file.
But I may change it into a DLL file.
Then I use dynamic linking to link the DLL file with my product.

Thanks in advance.

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Sorry for the poor English.