Slow but messages to console are working:
*** Assemble using HJWasm /c /coff /Fl /Sn /Fo "MasmBasic" ***
HJWasm v2.14, May 9 2016, Masm-compatible assembler.
Portions Copyright (c) 1992-2002 Sybase, Inc. All Rights Reserved.
Source code is available under the Sybase Open Watcom Public License.
*** using MasmBasic version 06.05.2016 ***
Tmp_File.asm: 761 lines, 4 passes, 796 ms, 0 warnings, 0 errors
*** Link using link with sub Console "MasmBasic.obj" /OUT:TestMasmBasic.exe - no resources ***
Microsoft (R) Incremental Linker Version 5.12.8078
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.
*** Assembling and linking took 8237 milliseconds ***
AsmC does it in 2 seconds. There seems to be a considerable overhead:
\Masm32\MasmBasic\libtmpAA.asm: 15065 lines, 2 passes, 312 ms, 0 warnings, 0 errors
\Masm32\MasmBasic\libtmpAD.asm: 94 lines, 2 passes, 219 ms, 0 warnings, 0 errors
\Masm32\MasmBasic\libtmpAE.asm: 36 lines, 2 passes, 234 ms, 0 warnings, 0 errors