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`A��oZcpp - C language preprocessorcpp is the preprocessor for all C language dialects. It is	a standalone version of the libpp(3) preprocessor library. The	C dialect implemented by cpp is determined by probing cc(1)	using probe(1). The path of the emulated compiler can be changed	by the -D-X command line option.If output is omitted then the standard output is written; if input	is also omitted then the standard input is read. NOTE: this is an	ancient, non-standard, non-intuitiive file operand syntax that is	required by cc(1); use shell file name expansion at your peril.cpp specific options are set by the -D- and -I- options.commentsPass comments to the output. By default comments are omitted.defineDefine the macro name to have value; 1 is assumed if	=value is omitted. If name begins with : then it is	interpreted as a libpp(3) #pragma pp: statement; if name	begins with % then it is interpreted as a libpp(3) #	directive statement; if name begins with - or + then it is	interpreted as a libpp(3) option; - turns the option on,	+ turns it off. Most options have a #pragma counterpart that	is listed with the option definition. Right, this is ugly, but its the	only portable way to pass options through cc(1) to	cpp:name[=value]Preprocess for K&R compatibility.Set the debug trace level.		Higher levels produce more output. Levels higher than 3		enabled only in -g compiled versions.Set the main input file name to name. This only		affects error message and line sync output.All directories are hosted; compatibility		warning messages from hosted directory headers are suppressed.All directories contain C headers; used only with		-D-+.Enable the non-standard name=value macro		argument mode.Set the line sync directive		id to id or null if omitted.Disable multiple include detection.Enable the non-standard passthrough mode; may		be useful for processing non-C input.Dump macro definitions to the output so that the		output may be passed through cpp again. Used for		generating precompiled headers.Enable the transition preprocessing mode. Used		for compilers that can't make up their semantics between		K&R and ISO.Enable strict preprocessing semantics and warnings.		Works with any mode (compatibiliy, transition,		or the default ISO).Enable implementation specific		test code according to test.Enable pedantic warnings in non-hosted files.Enable pool mode. See libpp(3).Preprocess for the C++ dialect.includeList canonicalized #define statements for non-predefined		macros in the output. Mark directory		as a C header directory. Used with pp:plusplus.Read the default probe(1) definitions from		file, or ignore the default definitions if file		is omitted.Mark directory		as a hosted directory. Headers from hosted directories have		compatibility warnings disabled.Add header to the		list of ignored headers.Include file but do not emit text or line syncs.Include file and emit text to the output file.dependenciesGenerate make(1) dependencies. Not needed with	nmake(1). -M may be followed by optional flags to change	dependency output styles:Append directory to the list of directories searched for	#include files. If directory is - then: (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 a -I option.Generate missing dependencies too.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.syncEmit line syncs.undefineRemove the definition for the macro name.assertEnter the assertion via #assert for system V	compatibility.assertionpreprocessIgnored for compatibility with ancient compilers.include-referenceList canonicalized #define statements for all macros. All		other output is disabled.If not gcc(1) then truncate identifiers to length	characters for compatibility with old AT&T (I guess only Lucent needs	them now) compilers.Emit the libpp(3) version.argmodeEnable name=value macro arguments for easel(1)	compatibility.standardAdd directory to the list searched for	#include <...> files.directory[ input [ output ] ]cc(1), gcc(1), libpp(3)Preprocess for the compiler cc which must be		an executable path or an executable on $PATH.Add directory to the default standard include		directory list.Generate dependencies in a separate .d file. Preprocessed		output is still written to output, or the standard output		if output is omitted.Only generate local header dependencies; hosted headers are		omitted. Note that hosted headers are determined by		-I-H and the pp:hosted and pp:hostdir pragmas;		no special distiction is made between "" and <> include		styles.Emit #include file paths on the standard error,	one per line, indented to show nesting.length