FIX: PWB 1.0 "Set Dependencies" Fails with Spaces in #include

ID: Q62578

The information in this article applies to:

Microsoft Programmer's Workbench for MS-DOS, version 1.0
Microsoft Programmer's Workbench for OS/2, version 1.0

SYMPTOMS

The Programmer's WorkBench (PWB) version 1.00 (shipped with C version 6.00) includes a "Set Dependencies" option in the "Set Program List" window. This option automatically sets up build dependencies for all include files used in the current project. This option will fail with a message that the include file does not exist if there are embedded spaces between the left angle bracket (<) and the include-file name in an include directive line.

RESOLUTION

The Set Dependencies option will work correctly if the space(s) are removed or if a new build option is added to the TOOLS.INI file.

STATUS

Microsoft has confirmed this to be a problem in the Programmer's WorkBench version 1.0. This problem was corrected in the Programmer's WorkBench version 1.1.

MORE INFORMATION

Although embedded spaces are legal in C programming syntax, the Programmer's WorkBench fails to parse the include line correctly if spaces exist before the filename. The following line of code shows the situation where the "Set Dependencies" error will occur:


   #include < stdio.h >

The space before the "s" in stdio.h prevents PWB from finding the STDIO.H include file. (The trailing space after stdio.h does not affect the behavior of "Set Dependencies".)

The full text of the error message window for the line above is as follows:

stdio.h does not exist

Cannot build its dependency tree. Abort dependency lists generation?

<Yes> <No> <Help>

Selecting <Help> displays a help screen that describes the problem as being either a mistyped filename or a nonexistent file, but the actual file DOES exist. Removing the embedded space will correct the problem.

You can also add two new "build" lines to the TOOLS.INI file to make the PWB recognize include directives that contain spaces. These lines should be included under the section with the [PWB] tag, and should have the following syntax:

build: include .c \

"^[ \t]*#[ \t]*include[ \t]*\"[ \t]*\\([^\"]+[ \t]*\\)\"" \ case

build: include .c \

"^[ \t]*#[ \t]*include[ \t]*<[ \t]*\\([^>]+\\)[ \t]*>" \ case system

(Note: These build switch statements are broken down into multiple lines with the line continuation character (\) because of space limitations; you may enter each of them into the TOOLS.INI file on a single line, rather than multiple lines.)

There is one drawback to this workaround; you will still get the error message shown above because the "old" build switch is applied before the new one. To have the new build switch take effect, you need to select "No" when prompted to abort the dependency list generation. Once you have selected "No" for each file with spaces in the include directive, the dependencies will then be generated correctly.

Additional query words: 1.00 buglist1.00 fixlist1.10

Keywords : kb16bitonly
Version : MS-DOS:1.0; OS/2:1.0
Platform : MS-DOS OS/2
Issue type :