Via file syntax rules
Via files must conform to some syntax rules.
A via file is a text file containing a sequence of words. Each word in the text file is converted into an argument string and passed to the tool.
Words are separated by whitespace, or the end of a line, except in delimited strings, for example:
--c90 --strict (two words)
--c90 --strict (one word)
The end of a line is treated as whitespace, for example:
This is equivalent to:
Strings enclosed in quotation marks ("), or apostrophes (') are treated as a single word. Within a quoted word, an apostrophe is treated as an ordinary character. Within an apostrophe delimited word, a quotation mark is treated as an ordinary character.
Use quotation marks to delimit filenames or path names that contain spaces, for example:
-I C:\My Project\includes (three words)
-I "C:\My Project\includes" (two words)
Use apostrophes to delimit words that contain quotes, for example:
-DNAME='"ARM Compiler"' (one word)
Characters enclosed in parentheses are treated as a single word, for example:
--option(x, y, z) (one word)
--option (x, y, z) (two words)
Within quoted or apostrophe delimited strings, you can use a backslash (\) character to escape the quote, apostrophe, and backslash characters.
A word that occurs immediately next to a delimited word is treated as a single word, for example:
This is treated as the single word:
Lines beginning with a semicolon (;) or a hash (#) character as the first nonwhitespace character are comment lines. A semicolon or hash character that appears anywhere else in a line is not treated as the start of a comment, for example:
-o objectname.axf ;this is not a comment
A comment ends at the end of a line, or at the end of the file. There are no multi-line comments, and there are no part-line comments.
Lines that include the preprocessor option -Dsymbol="value" must be delimited with a single quote, either as '-Dsymbol="value"' or as -Dsymbol='"value"'. For example: