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ICU-CONFIG(1)				ICU 50.1.2 Manual			    ICU-CONFIG(1)

       icu-config - output ICU build options

       icu-config  [  --bindir ] [ --cc ] [ --cflags ] [ --cppflags ] [ --cppflags-searchpath ] [
       --cxx ] [ --cxxflags ] [ --detect-prefix ] [ --exec-prefix ] [ --exists ]  [  --help,  -?,
       --usage	]  [  --icudata ] [ --icudata-install-dir ] [ --icudata-mode ] [ --icudatadir ] [
       --invoke ] [ --invoke=prog ] [ --ldflags ] [ --ldflags-layout ] [ --ldflags-libsonly  ]	[
       --ldflags-searchpath  ] [ --ldflags-system ] [ --ldflags-icuio ] [ --mandir ] [ --prefix ]
       [ --prefix=prefix ] [ --sbindir ] [ --shared-datadir ] [ --sysconfdir ]	[  --unicode-ver-
       sion ] [ --version ] [ --incfile ]

       icu-config simplifies the task of building and linking against ICU as compared to manually
       configuring user makefiles or equivalent.  Because icu-config is an executable script,  it
       also  solves the problem of locating the ICU libraries and headers, by allowing the system
       PATH to locate it.

       icu-config can be used without a makefile. The command line below is sufficient for build-
       ing   a	 single-file   c++   program   against	 ICU.	(For   example,   icu/source/sam-

	      `icu-config --cxx --cxxflags --cppflags --ldflags` -o props props.cpp

       More commonly, icu-config will be called from within a makefile, and used to set up  vari-
       ables. The following example also builds the props example.

	      CC=$(shell icu-config --cc)

	      CXX=$(shell icu-config --cxx)

	      CPPFLAGS=$(shell icu-config --cppflags)

	      CXXFLAGS=$(shell icu-config --cxxflags)

	      LDFLAGS =$(shell icu-config --ldflags)

	      all: props

	      props.o: props.cpp

       make(1) will automatically use the above variables.

	      Prints  the  binary (executable) directory path. Normally equivalent to 'bin'.  ICU
	      user-executable applications and scripts are found here.

       --cc   Print the C compiler used.  Equivalent to the $(CC) Makefile variable.

	      Print the C compiler flags. Equivalent to the $(CFLAGS)  Makefile  variable.   Does
	      NOT  include preprocessor directives such as include path or defined symbols. Exam-
	      ples include debugging (-g) and optimization flags

	      Print the C preprocessor flags. Equivalent to the  $(CPPFLAGS)  Makefile	variable.
	      Examples are -I include paths  and -D define directives.

	      Print the C preprocessor flags, as above but only -I search paths.

       --cxx  Print the C++ compiler. Equivalent to the $(CXX) Makefile variable.

	      Print the C++ compiler flags. Equivalent to the $(CXXFLAGS) Makefile variable.

	      If  ICU  has  been moved from its installed location, prepending this flag to other
	      icu-config calls will attempt to locate ICU relative to where the icu-config script
	      has  been  located. Can be used as a last-chance effort if the ICU install has been

	      Print the prefix used for executable program directories (such as bin, sbin,  etc).
	      Normally the same as the prefix.

	      Script  will  return  with a successful (0) status if ICU seems to be installed and
	      located correctly, otherwise an error message and nonzero status will be displayed.

       --help, -?,--usage
	      Print a help and usage message.

	      Print the shortname of the ICU data file. This does not include any suffix such  as
	      .dat,  .dll, .so, .lib, .a, etc nor does it include prefixes such as 'lib'.  It may
	      be in the form icudt21b

	      Print the directory where ICU packaged data should be installed.	 Can use as  pkg-
	      data(1)'s --install option.

	      Print the default ICU pkgdata mode, such as dll or common.  Can use as pkgdata(1)'s
	      --mode option.

	      Print the path to packaged archive data.	(should be where $ICU_DATA or  equivalent
	      default path points.)  Will NOT point to the libdir.

	      If  ICU  is  not installed in a location where the operating system will locate its
	      shared libraries, this option will print out commands so as to set the  appropriate
	      environment  variables to load ICU's shared libraries. For example, on many systems
	      a variable named LD_LIBRARY_PATH or equivalent must be set.

	      Same as the --invoke option, except includes options for invoking a  program  named
	      prog.   If  prog is the name of an ICU tool, such as genrb(1), then icu-config will
	      also include the full path to that tool.

	      Print any flags which should be passed to the linker.  These  may  include  -L  for
	      library  search  paths, and -l for including ICU libraries. By default, this option
	      will attempt to link in the "common" (libicuuc) and "i18n" (libicui18n)  libraries,
	      as  well as the data library. If additional libraries are required, any of the fol-
	      lowing two flags may be added in conjunction with this one, for example  "--ldflags
	      --ldflags-icuio"	if  the icuio library is required in addition to the standard ICU
	      libraries.  Equivalent to the $(LDFLAGS) Makefile variable.

	      Prints the link option for the ICU layout library.

	      Prints the link option to add the ICU I/O package

	      Similar to --ldflags but only includes the -l options.

	      Similar to --ldflags but only includes the -L search path options.

	      Similar to --ldflags but only includes system libraries (such as pthreads) --mandir
	      Prints the location of the installed ICU man pages. Normally (man)

	      Prints the prefix (base directory) under which the installed ICU resides.

	      Sets  the  ICU  prefix to prefix for the remainder of this command line.	Does test
	      whether the new prefix is valid.

	      Prints the location of ICU system binaries, normally (sbin)

	      Prints the location of ICU shared data, normally (share)

	      Prints the location of ICU system configuration data, normally (etc)

	      Prints the Version of the Unicode Standard which the current ICU uses.

	      Prints the current version of ICU.

	      Prints the 'Makefile.inc' path, suitable for use with pkgdata(1)'s -O option.

       Steven Loomis


       Copyright (C) 2002-2004 IBM, Inc. and others.

ICU MANPAGE				   17 May 2004				    ICU-CONFIG(1)
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