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OpenSolaris 2009.06 - man page for msgcpp (opensolaris section 1)

msgcpp(1)				  User Commands 				msgcpp(1)

       msgcpp - C language message catalog preprocessor

       msgcpp [-ACEHMPVX] [-D name[=value]] [-I directory] [-U name]
	[-T[length]] [-Y directory] [input [output] ]

       msgcpp  is  a C language message catalog preprocessor. It accepts cpp(1) style options and
       arguments. msgcpp preprocesses an input C source file and emits keyed lines to the output,
       usually for further processing bymsgcc(1). msgcc output is in the gencat(1) syntax. Candi-
       date message text is determined by arguments to the last <error.h>  and	<option.h>  func-
       tions. The msgcpp keyed output lines are:

       cmd command	  command  is  a candidate for --??keys option string generation. This is
			  triggered by b_command(int argc, in the input.

       def name string	  name is a candidate variable with string value string.

       str string	  string should be entered into the catalog.

       var name 	  If def name occurs then its string value should  be  entered	into  the

       The input source file is preprocessed with the pp:allpossible option on. This enables non-
       C semantics. All source should first be compiled error-free with a  real  compiler  before
       running	msgcpp.  The following changes are enabled for the top level files. Included file
       behavior is not affected.

	   1.	  All #if, #ifdef and #ifndef branches are enabled.

	   2.	  The first definition for a macro is  retained,  even	when  subsequent  #define
		  statements would normally redefine the macro. #undef must be used to redefine a

	   3.	  Macro calls with an improper number of arguments are silently ignored.

	   4.	  #include on non-existent headers are silently ignored.

	   5.	  Invalid C source characters are silently ignored.

       msgcat.h is included if it exists. This file may contain macro definitions  for	functions
       that translate string arguments. If foo is a function that translates its string arguments
       then include the  line  #define	foo  _TRANSLATE_  in  msgcat.h,  or  specify  the  option
       -Dfoo=_TRANSLATE_.  If  bar  is	a  function that translates string arguments if the first
       argument is stderr, then use either #define bar _STDIO_ or -Dbar=_STDIO_.

       The macro _BLD_msgcat is defined to be 1. As an alternative to msgcat.h, _TRANSLATE_ defi-
       nitions could be placed inside #ifdef _BLD_msgcat ... #endif.

       The following options are supported:

       -A			Enter the assertion using #assert for system V compatibility.

       -C			Pass comments to the output.
				Comments are omitted by default.

       -D			Define	the  macro  name to have value. This is the only portable
       --define=name[=value]	way to pass options through cc to cpp(1).

				    o	   If =value is omitted, value is assumed to be 1 .

				    o	   If name begins with :, then it  is  interpreted  as	a
					   libpp #pragma pp: statement.

				    o	   If  name begins with %, it is interpreted as a libpp #
					   directive statement.

				    o	   If name begins with a - or a +, it is interpreted as a
					   libpp option.

					   - turns the option on, + turns it off.

				    o	   Most options have a #pragma counterpart that is listed
					   with the option definition.


				    Preprocess for K&R C compatibility.

				pp:debug level level

				    Set the debug trace level.

				    Specify level as a number greater than or equal to 0.  Higher
				    levels  produce more output. Levels higher than 3 can only be
				    enabled in the -g compiled versions.


				    Set the main input file name to name. This only  affects  the
				    error messages and the line sync output.


				    All  directories  are  hosted. Compatibility warning messages
				    from the hosted directory headers are suppressed.


				    All directories contain C headers. This option is  only  used
				    only with -D-+.


				    Enable the non-standard name=value macro argument mode.

				pp:lineid [id]

				    Set the line sync directive id to id. If id is not specified,
				    set to null.


				    Disable multiple include detection.


				    Enable the non-standard passthrough mode. This can be  useful
				    for processing non-C input.


				    Dump  macro  definitions to the output so that the output may
				    be passed through cpp again. This is used for generating pre-
				    compiled headers.


				    Enable  the  transition  preprocessing mode. This is used for
				    compilers that cannot make up their semantics between K&R and
				    ISO C.


				    Enable  strict  preprocessing  semantics  and  warnings. This
				    works  with  any  mode  (compatibility,  transition,  or  the
				    default ISO).

				pp:test test

				    Enable implementation specific test code according to test.


				    Enable pedantic warnings in non-hosted files.


				    Preprocess	for  the cc compiler, which must be an executable
				    path or an executable on $PATH.


				    Enable pool mode.


				    List  canonicalized  #define  statements  for  non-predefined
				    macros in the output.


				    List  canonicalized  #define  statements  for all macros. All
				    other output is disabled.


				    Preprocess for the C++ dialect.

       -E			Ignored; for compatibility with very old compilers.

       -H			Emit #include file paths on the standard  error,  one  per  line,
       --include-reference	indented to show nesting.

       -I			Append directory to the list of directories searched for #include
       --include[=directory]	files.

				If directory is -:

				    1.	   -I directories before -I- are searched only for  "..."
					   include files

				    2.	   -I  directories  after  -I- are searched for "..." and
					   <"..."> include files

				    3.	   the directory . is searched only if it  is  explicitly
					   specified by an -I option

				pp:cdir directory

				    Mark  directory  as a C header directory. This option is used
				    with pp:plusplus.


				    Read the default probe definitions from file, or  ignore  the
				    default definitions if file is omitted.

				pp:hostdir directory

				    Mark  directory  as  a  hosted directory. Headers from hosted
				    directories have compatibility warnings disabled.

				pp:ignore header

				    Add header to the list of ignored headers.


				    file contains a sequence of header [= "map"  ]  lines,  where
				    header  is	either <name> or "name", and "map" is an explicit
				    binding for header. header is ignored if = "map" is omitted.


				    Include file but do not emit text or line syncs.


				    Add directory to the default standard include directory list.


				    Include file and emit text to the  output  file.  The  option
				    value can be omitted.

       -M			Generate  make(1S)  dependencies.  This option is not needed with
       --dependencies		nmake.

				The -M option can be followed by optional  flags  to  change  the
				dependency output styles.

				The following optional flags are supported:

				D    Generate  dependencies  in  a separate .d file. Preprocessed
				     output is still written to output, or the standard output if
				     output is omitted.

				G    Also generate missing dependencies.

				M    Only  generate local header dependencies. Hosted headers are
				     omitted. Hosted headers are determined by	the  -I-H  option
				     and  the --pp:hosted and pp:hostdir pragmas. No special dis-
				     tinction is made between the "" and <> include styles.

       -P			Emit line syncs.
				Line sync is turned on by default. -P means --nosync.

       -T[length]		If not gcc, truncate identifiers to length characters for compat-
				ibility with old AT&T compilers.

       -U			Remove the definition for the macro name.

       -V			Emit the libpp version.

       -X			Enable name=value macro arguments for easel compatibility.

       -Y			Add directory to the list searched for #include <...> files.

       The following operands are supported:

       input	 Specifies C source file to preprocess.

       output	 Specifies output file.

       0     Successful completion.

       >0    An error occurred.

       Example 1 Using msgcpp to Extract Localizable Strings

       The  following  example	uses msgcpp to extract localizable strings from the file hello.c,
       marked using the ERROR_dictionary(), and writes them to the file hello.mso:

	 example% cat hello.c

	 #include <stdio.h>
	 #include <stdlib.h>

	  * dummy macro to avoid including
	  * libast headers
	 #define ERROR_dictionary(x) x

	 int main(int ac, char *av[])
	     puts( ERROR_dictionary("hello world") );
	     puts( ERROR_dictionary("hello all") );
	     return( EXIT_SUCCESS );

	 example% msgcpp -D__STDC__ -D__i386 hello.c hello.mso

	 example% cat hello.mso
	 str "hello world"
	 str "hello all"

       Glenn Fowler, gsf@research.att.com

       See attributes(5) for descriptions of the following attributes:

       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       |Availability		     |SUNWastdev		   |
       |Interface Stability	     |Volatile			   |

       cpp(1), gencat(1), msgcc(1), msgcvt(1), msggen(1), make(1S), attributes(5)

       Kernighan, Brian W. and Ritchie, Dennis M., The C  Programming  Language,  Prentice  Hall,

SunOS 5.11				    9 Oct 2007					msgcpp(1)

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