Using Fortran Preprocessor Options

B

Specifies that C++-style comments should not be recognized.

C

Specifies that C-style comments should not be recognized. This is the same as specifying c_com=no.

c_com={yes|no}

Determines whether C-style comments are recognized. If you specify c_com=no or C, C-style comments are not recognized. By default, C-style comments are recognized; that is, c_com=yes.

Dname

Defines the preprocessor variable name as 1 (one). This is the same as if a Dname=1 option appeared on the fpp command line, or as if a

#define name 1

line appeared in the source file processed by fpp.

Dname=val

Defines name as if by a #define directive. This is the same as if a

#define name var

line appeared in the source file processed by fpp. The D option has lower precedence than the U option. That is, if the same name is used in both a U option and a D option, the name will be undefined regardless of the order of the options.

e

Tells the compiler to accept extended source lines. For fixed format, lines can contain up to 132 characters. For free format, lines can contain up to 32768 characters.

e80

Tells the compiler to accept extended source lines. For fixed format, lines can contain up to 80 characters.

fixed

Tells the compiler to assume fixed format in the source file.

free

Tells the compiler to assume free format in the source file.

f_com={yes|no}

Determines whether Fortran-style end-of-line comments are recognized or ignored by fpp. If you specify f_com=no, Fortran style end-of-line comments are processed as part of the preprocessor directive. By default, Fortran style end-of-line comments are identified by fpp on preprocessor lines and are then ignored by fpp; that is, f_com=yes. For example:

#define max 100 ! max number
do i = 1, max + 1

If you specify f_com=yes, fpp will output

do i = 1, 100 + 1

If you specify f_com=no, fpp will output

do i = 1, 100 ! max number + 1

help

Displays information about fpp options.

I<dir>

Inserts directory <dir> into the search path for #include files with names not beginning with "/". The <dir> is inserted ahead of the standard list of "include" directories so that #include files with names enclosed in double-quotes (") are searched for first in the directory of the file with the #include line, then in directories named with I options, and lastly, in directories from the standard list. For #include files with names enclosed in angle-brackets (<>), the directory of the file with the #include line is not searched.

m

Expands macros everywhere. This is the same as macro=yes.

macro={yes|no_com|no}

Determines the behavior of macro expansion. If you specify macro=no_com, macro expansion is turned off in comments. If you specify macro=no, no macro expansion occurs anywhere. By default, macros are expanded everywhere; that is, macro=yes.

noB

Specifies that C++-style comments should be recognized.

noC

Specifies that C-style comments should be recognized. This is the same as c_com=yes.

noJ

Specifies that F90-style comments should be recognized in a #define line. This is the same as f_com=no.

no-fort-cont

Specifies that IDL style format should be recognized. This option is only for the IDE. Note that macro arguments in IDL may have a C-like continuation character \ which is different from the Fortran continuation character &. Fpp should recognize the C-like continuation character and process some other non-Fortran tokens so that the IDL processor can recognize them.

P

Tells the compiler that line numbering directives should not be added to the output file. This line-numbering directive appears as

#line-number file-name

Uname

Removes any initial definition of name, where name is an fpp variable that is predefined on a particular preprocessor. Here is a partial list of symbols that may be predefined, depending upon the architecture of the system:

Operating System: __APPLE__, __unix, and __linux

Hardware: __i386, __ia64, __x86_64

undef

Removes initial definitions for all predefined symbols.

V

Displays the fpp version number.

w[0]

Prevents warnings from being output. By default, warnings are output to standard error stream (stderr).

Xu

Converts uppercase letters to lowercase, except within character-string constants. The default is to leave the case as is.

Xw

Tells the compiler that in fixed-format source files, the blank or space symbol " " is insignificant. By default, the space symbol is the delimiter of tokens for this format.

Y<dir>

Adds directory <dir> to the end of the system include paths.