BUG: Assembling .ASM File With CL.EXE Fails w/ MASM 6.0 (74745)
The information in this article applies to:
- Microsoft Macro Assembler (MASM) 6.0
- Microsoft Macro Assembler (MASM) 6.0a
This article was previously published under Q74745 SYMPTOMS
Using the CL driver that comes with Microsoft C versions 6.0, 6.0a, and
6.0ax to invoke MASM versions 6.0 and 6.0a to assemble a .ASM file
specified on the CL compile line will result in an error similar to one of
the following:
error A2901: cannot run ML.EXE
Unknown option: /. Use /help for list of options
Assembling: NUL.asm
NUL.asm(0): error A2088: END directive required at end of file
CAUSE
The C online help for CL states that files that are listed on the command
line with a .ASM extension will automatically cause MASM to be invoked.
When this happens, CL.EXE invokes MASM.EXE. With MASM 5.1 or 5.1a, this
will run the assembler.
However, with MASM 6.0 and 6.0a, MASM.EXE is a compatibility driver for
ML.EXE, which executes version 6.0 of the assembler. The command-line
switches and filename are not being passed correctly from the CL.EXE to
ML.EXE. This results in a variety of error messages as shown above.
STATUS
Microsoft has confirmed this to be a problem in MASM versions 6.0 and 6.0a.
We are researching this problem and will post new information here as it
becomes available.
| Modification Type: | Major | Last Reviewed: | 10/20/2003 |
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| Keywords: | KB74745 |
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