The information in this article applies to:
- Microsoft NMAKE for MS-DOS, versions 1.01, 1.11, 1.12, 1.13, 1.2,
1.3, and 1.4
- Microsoft NMAKE for OS/2, versions 1.11, 1.12, 1.13, and 1.21
- Microsoft NMAKE Utility for Windows NT, versions 1.4 and 1.5
SUMMARY
The text below demonstrates using NMAKE and the ALL target-dependency
(an NMAKE keyword) to copy or backup files that are out-of-date with
respect to the previous copy or archive.
MORE INFORMATION
The steps below create a .MAK file that copies the AUTOEXEC.BAT and
CONFIG.SYS files to a directory named C:\BACKUP:
- Use a text editor to create COPY.MAK that contains the following
text:
ALL: c:\backup\autoexec.bat c:\backup\config.sys
c:\backup\autoexec.bat: c:\autoexec.bat
copy c:\autoexec.bat c:\backup\autoexec.bat
c:\backup\config.sys: c:\config.sys
copy c:\config.sys c:\backup\config.sys
NOTE: The .MAK file above copies the AUTOEXEC.BAT files from the
source directory (C:\) to the target directory (C:\BACKUP). The
files are copied only if the files in the source directory have an
older time/date stamp than the files in the target directory.
- Create the C:\BACKUP directory if it does not already exist. To do
so, type the following at the MS-DOS command prompt:
mkdir c:\backup
- To backup any changes you made to your AUTOEXEC.BAT or CONFIG.SYS
files, type the following at the MS-DOS command prompt:
nmake /f copy.mak
NMAKE processes only one dependency per makefile. If the makefile did
not include the ALL target-dependency (an NMAKE keyword), only the
first file would be copied and the second copy command would be
ignored completely. The ALL target creates a dependency that depends
on the completion of every task in the makefile. Without this
statement, two dependencies are declared, only one of which would be
processed.
Page 645 of the "Microsoft Basic 7.0: Programmer's Guide" for versions
7.0 and 7.1 presents a similar example. However, this example lacks
the ALL target-dependency and does not work correctly as presented.
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