HP-UX Reference (11i v1 00/12) - 1 User Commands N-Z (vol 2)
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STANDARD Printed by: Nora Chuang [nchuang] STANDARD
/build/1111/BRICK/man1/neqn.1
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u
unifdef(1) unifdef(1)
NAME
unifdef - remove preprocessor lines
SYNOPSIS
unifdef [-clt][[-D sym ][-U sym ][-iD sym ][-iU sym ]] ... [file ]
DESCRIPTION
unifdef simulates some of the actions of cpp in interpreting C language preprocessor command lines
(see cpp(1)). For unifdef, a valid preprocessor command line contains as its first character a # and one
of the following keywords: ifdef, ifndef, if, else,orendif. The # character and its associated
keyword must appear on the same line, but they can be separated by spaces, tabs, and commented text.
When appropriate, the portions of code surrounded by and including the targeted preprocessor directives
are removed, and the resultant text is written to the standard output.
Unlike cpp, unifdef does not insert included files, interpret macros, or strip comment lines. This
means, among other things, that #define and #undef macros occurring within the input text are not
interpreted.
Since unifdef is language-independent, it can be used for processing source files for languages other
than the C language. For example, unifdef
can be used on FORTRAN language source files, provided the
C language preprocessor commands are used.
Options
unifdef recognizes the following command-line options:
-c Complement the normal behavior by printing only the rejected lines.
-iDsym Ignore text delimited by #ifdef sym. In other words, text that would otherwise be
affected by some action is not touched when found within the context of a preprocessor
command using sym.
-iUsym Ignore text delimited by #ifndef sym.
-l Replace rejected lines with blank lines in the text written to the standard output.
-t Treat the input source as plain text. C-language comment and quoting constructs are not
recognized.
-Dsym Define symbol sym.
-Usym Cause symbol sym to be undefined.
RETURN VALUE
The unifdef command returns the following exit values:
0 Output is an exact copy of the input.
1 Output is not an exact copy of the input.
2 The unifdef command fails. The failure might be due to a premature EOF or to an
inappropriate else, elif,orendif.
EXAMPLES
Assume file foo.f contains the following:
PROGRAM TEST1
INTEGER I, J
#ifdef ANSI77
DO I=1,10
#else
DO 100 I=1,10
#endif
J=J+1
#if defined (DEBUG) || defined (TEST)
PRINT *,J
#endif
#ifdef ANSI77
ENDDO
#else
HP-UX Release 11i: December 2000 − 1 − Section 1−−965
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