spp - sep preprocessor
spp <infile >outfile -Csymbol -Dname=value -Dname -Uname -Idir -Ydir -strict -H
"Sep Pre Processor" for conditional compilation and macro expansion; unlike its ancestor "cpp" it can be used for any programming language
definition of comment symbol -Csymbol
definition of names: -Dname=value -Dname
undefinition of names: -Uname
-strict be strict on directive lines
-H prints included file names
-f77 strict f77 output (folds lines longer than 72 col and uses "C" as comment symbol)
tools