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c89(1)									c89(1)

       c89 - Standard C Compiler

       c89  [-c]  [-D name [=value]]... [-E] [-g] [-I directory]... [-L direc‐
       tory]... [-o outfile] [-O] [-s] [-U name]...  file...

       Interfaces documented on this reference page conform to industry	 stan‐
       dards as follows:

       c89:  XPG4, XPG4-UNIX

       Refer  to  the  standards(5)  reference page for more information about
       industry standards and associated tags.

       The following options are defined by the XPG4-UNIX standard.   However,
       the  compiler  can  also recognize the options defined in cc(1). Unlike
       cc(1), c89 includes the -std1 option by default (for ANSI  C  standards
       checking).   To	check  for full compliance to XPG4-UNIX, you must also
       specify -D_XOPEN_SOURCE_EXTENDED. See standards(5)  for	more  informa‐
       tion.   Suppress	 the  loading  phase  of  the compilation and force an
       object file to be produced.  Produce symbol table information for  full
       symbolic	 debugging and suppress optimizations that limit full symbolic
       debugging.  Symbol types and stack-frame variables names are available.
       Global optimizations are not performed. Instruction scheduling does not
       span source line boundaries. Trap instructions are inserted  to	ensure
       that exceptions are reported on the source lines that caused them to be
       generated.  Remove the symbol table and relocation bits to  save	 space
       (this  impairs  the usefulness of the debuggers).  This information can
       also be removed by strip(1).  Name the final output  file  output.   If
       this option is used, the file a.out is undisturbed.  Define the name as
       if with a #define statement. If no definition is	 given,	 the  name  is
       defined	as 1.  Run only the C macro preprocessor on the files and send
       the result to the standard  output  device.   Specifies	that  #include
       files  whose  names  do not begin with / are always sought first in the
       directory of the file argument, then in	directories  specified	in  -I
       options, and finally in the standard directory, /usr/include.  Adds dir
       to the list of directories that are searched for	 libraries.   Directo‐
       ries  specified	with  -L are searched before the standard directories.
       Enable global optimization, including code motion,  strength  reduction
       and  test  replacement,	split  lifetime analysis, and code scheduling.
       Remove any definition of name previously defined with the -D option.

       Compiles source code in conformance with the XPG4-UNIX standard.

       The c89 command can process one or  more	 of  the  following  types  of
       “file” arguments: Files whose names end with are assumed to be C source
       programs. They are compiled, and each object program  is	 left  in  the
       file  whose name consists of the last component of the source with sub‐
       stituted for file is deleted only when a single source program is  com‐
       piled  and  linked  in  a  single step.	Files whose names end with are
       assumed to be libraries	of  object  files.   These  files  are	passed
       directly	 to  the linker.  Files whose names end with are assumed to be
       object files produced by a previous c89 command.	 These files are  also
       passed directly to the linker.

       The  c89	 command can take other types of file arguments, although they
       are not part of the standard specification.  See cc(1) for  a  descrip‐
       tion of the other file types.

       When  the  compiler is invoked, it defines the following C preprocessor
       macros that identify the language of the input files and	 the  environ‐
       ments in which the code can run:


       You  can	 reference  these  macros in #ifdef statements to isolate code
       that applies to a particular language or environment.

       The diagnostics produced by c89 are intended  to	 be  self-explanatory.
       Occasional messages may be produced by the assembler or loader.

       Compiles helloworld.c and produces the executable file helloworld.c c89
       -o helloworld helloworld.c Compiles helloworld.c and creates the object
       file helloworld.o.  c89 -c helloworld.c Compiles a.c and b.c, producing
       a.o and b.o. The object files main.o, a.o,  and	b.o  are  then	linked
       together,  using the library /a/b/c/libQ.a to resolve any references in
       a.o, and /a/b/c/libp.a to resolve any  references  in  b.o.   The  exe‐
       cutable	program	 is  placed  in the file a.out.	 Only one -L option is
       needed because libQ.a and libp.a reside in the same directory.  c89  -L
       /a/b/c main.o a.c -l Q b.c -l p

       The following environment variables affect compiler operation: Provides
       a default value for locale variables that are not set.  If any of these
       variables  contains an invalid setting, the compiler behaves as if none
       were set.  If set to a non-empty string, this variable overrides values
       in all locale variables, including LANG.	 Determines the locale for the
       interpretation of sequences of bytes of text data  as  characters  (for
       example,	 single-byte  characters  instead  of multi-byte characters in
       arguments and input files).  Determines the locale used for  diagnostic
       messages.  Determines the locale of message catalogs for the processing
       of LC_MESSAGES.	Provides a pathname that overrides the default	direc‐
       tory for temporary files, if any.

       For  more information on these environment variables, see i18n_intro(5)
       and l10n_intro(5).

       Input file Object file Loaded output Compiler error messages in English
       Temporary  Compiler  configuration  file (optional) C front end C macro
       preprocessor DEC C compiler Binary ucode and symbol table joiner	 Ucode
       loader  Binary  ucode  and  symbol  table splitter Procedure integrator
       Optional global ucode optimizer Post-link optimizer Code generator Sym‐
       bolic  to  binary assembly language translator Binary assembly language
       assembler and reorganizer Run-time startup Startup for profiling	 Stan‐
       dard library, see intro(3) Level 1 profiling library Standard directory
       for #include files Interface between prof and cord Procedure rearranger
       Binary-to-symbolic ucode translator Symbolic-to-binary ucode translator
       File produced for analysis by prof File produced for analysis by gprof

       Commands: as(1), cc(1), ld(1)

       Other: i18n_intro(5), l10n_intro(5), standards(5)

       Guides: ANSI X3.159-1989

       B. W. Kernighan and D. M. Ritchie, The C Programming Language

       B. W. Kernighan, Programming in C -- a tutorial

       D. M. Ritchie, C Reference Manual

       Programmer's Guide

       Assembly Language Programmer's Guide

       Compaq C Language Reference Manual


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